JP2020081124A - Vehicle number game system - Google Patents

Abstract

To provide a vehicle number game system which can reduce dullness felt by a passenger other than a driver (for example, a child) in movement of a long time, as one embodiment.SOLUTION: A vehicle number game system comprises: external part of vehicle imaging means 3 for acquiring information of a number plate of other vehicle; inside part of vehicle imaging means 7 for acquiring information of at least existence and behavior of a driver and a passenger other than a driver in an own vehicle; a display 9 provided on a front side of the passenger; and a control unit 11 for creating a number question on the basis of the number information of the number plate of other vehicle acquired by the external part of vehicle imaging means, and displaying the same on the display 9 for setting the passage a question and allowing the passenger to input an answer.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a number game system for vehicles. In particular, the present invention relates to a number game system for providing a passenger with a numerical problem such as a calculation problem and making it answer in order to distract the boring passengers other than the driver.

Patent Document 1 is given as a prior art document that issues a problem to an occupant based on characters or number (number) information on the license plate of another vehicle. This patent document 1 discloses a technique for solving a drowsiness of a driver and preventing a deterioration of cognitive ability due to aging by asking a problem of stimulating a driver's brain by an appropriate method. Specifically, it is provided with an image pickup means for picking up an image of the preceding vehicle and a character recognizing means for recognizing a character on the license plate of the preceding vehicle in the image picked up by the image pickup means. It is shown that when a certain condition such as a certain condition is satisfied, a question based on the characters on the license plate of the preceding vehicle recognized by the character recognition means is presented to the driver by voice.

JP, 2008-132878, A

As described above, in Patent Document 1, in order to stimulate the driver's brain in order to eliminate drowsiness of the driver and prevent deterioration of cognitive ability due to aging, a question is provided to the driver by voice. Has been shown.

However, Patent Document 1 is a question by voice, and does not show that the contents of the question are displayed on a display or the like. It may be difficult to understand the content of the questions given by voice. In particular, it may be difficult to understand a numerical calculation problem.

In addition, Patent Document 1 is an invention that is presented to the driver as a subject, and does not show that the subject is provided to distract the fellow passenger (eg, child) other than the driver from boredom when traveling for a long time.

Therefore, in view of the above problems, at least one embodiment of the present invention is a number game for a vehicle that can distract the passengers (eg, children) other than the driver from boredom when traveling for a long time. The purpose is to provide a system.

The present invention has been invented to achieve the above-mentioned object, and at least one embodiment of the present invention is a vehicle exterior image capturing means for acquiring information of a license plate of another vehicle, and a driver and a driver inside the vehicle. Based on the number information of the license plate of the other vehicle acquired by the image capturing means inside the vehicle, the display installed in front of the passenger, and the outside image capturing means. And a control device for creating a numerical question, displaying it on the display, and allowing the fellow passenger to enter questions and answers.

With such a configuration, a numerical question is created and displayed on the display installed in front of the passenger based on the license plate number information of the other vehicle, and the driver's driving is hindered. The boredom of the passenger can be misled without causing it.

Furthermore, since the control device that allows the passengers to enter the question and input the answer is provided, safe driving can be ensured without causing any trouble to the driving of the driver.

In some embodiments, the display is arranged in front of the passenger sitting in a rear seat.

According to such a configuration, even when a child or the like is seated in the rear seat and moves for a long time, it is possible to dispel boredom by giving a question through the front display and answering the question.

In some embodiments, the display is arranged in front of the passenger sitting in the passenger seat.

According to such a configuration, even when a child or the like is seated in the passenger seat and moves for a long time, it is possible to solve the boredom by giving a question through the front display and answering the question.

In some embodiments, the control device includes a driver operation determination unit that determines whether the driver has activated the number game system or input an answer to a problem, and the driver operation determination unit that controls the driver operation by the driver. When it is determined that an operation has been performed, the system includes a system forced stop unit that stops the number game system.

According to such a configuration, when the driver operation determination unit of the control device determines that the driver has started the numeric game system or input an answer to the problem, the system forced stop unit stops the system, The driver can concentrate on driving and the driving safety is secured.

In some embodiments, the control device has a question difficulty level setting unit that sets the difficulty level of the question, and the question difficulty level setting unit sets the difficulty level of the question to be created and the time limit until answering. It is characterized by setting both in combination.

With such a configuration, the question difficulty level setting unit of the control device sets the question difficulty level by a combination of both the difficulty level of the question to be created and the time limit until the answer is made, that is, it is simply created. Not only the difficulty level of the problem but also the time limit until answering is combined, so that it is possible to enhance the game feeling, and to provide a number game that is not boring for passengers of various age groups.

In some embodiments, the difficulty level of the problem to be created is automatically set based on an estimated age estimated from at least information on the physical constitution of the fellow passenger acquired by the in-vehicle image pickup means. To do.

According to such a configuration, the age is estimated from the information of at least the physique of the fellow passenger acquired by the in-vehicle image pickup means, for example, the movement of the body or the head, and the learning degree is estimated based on the estimated age, and the arithmetic operation is performed. Set the difficulty level of the problem to be created by estimating how much can be used. Therefore, it is possible to automatically provide the passengers with a numerical problem that is not boring.

In some embodiments, the time limit is a time until the count value of the number of other vehicles passing by the vehicle acquired by the vehicle outside imaging unit reaches a set number. Characterize.

With such a configuration, the time limit is not a time based on a clock (timer) but a time based on the count value of the number of other vehicles passing by the side of the own vehicle. Alternatively, since the time limit depends on the traffic congestion on the road, the game as a vehicle can be made more interesting, and the passengers can be provided with a number game that is not bored.

According to at least one embodiment of the present invention, a numerical question is created and displayed on the display installed in front of a passenger other than the driver based on the number information of the license plate of the other vehicle, and the answer is given. The boredom of the passenger can be distracted without causing a hindrance to the driving of the driver. Further, since the control device that allows the passengers to enter the question and input the answer is provided, it is possible to ensure safe driving without causing any trouble to the driving of the driver.

It is a schematic block diagram which shows the principal part of the number game system for vehicles which concerns on one Embodiment of this invention. It is a block diagram showing composition of a control device of a number game system for vehicles concerning one embodiment of the present invention. It is a flow chart which shows the control flow of the control device of the number game system for vehicles concerning one embodiment of the present invention. It is a schematic plan view which shows the information acquisition state of the license plate of the other vehicle when the vehicle is driving one lane on one side. It is a schematic plan view which shows the information acquisition state of the license plate of the other vehicle when it is traveling on the center line side in the case of three lanes on one side. It is a schematic plan view which shows the information acquisition state of the license plate of the other vehicle when it is traveling on the road shoulder side in the case of three lanes on one side. It is a schematic plan view which shows the information acquisition state of the license plate of the other vehicle when it is driving in the central lane in the case of three lanes on one side.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the relative arrangement and the like of the constituent parts described as the embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. In the description of the embodiment, the front-rear, left-right and up-down directions are defined as the directions viewed from the occupant seated facing the front of the vehicle.

A number game system for a vehicle according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic configuration diagram showing a main part of a number game system for a vehicle.

As shown in FIG. 1, a number game system 1 for a vehicle (hereinafter, referred to as a number game system) 1 has an outside camera 3 as an outside image pickup means for acquiring information of a license plate of another vehicle, and an inside of a vehicle 5. In-vehicle camera 7 as an in-vehicle imaging means for acquiring at least the presence and behavior information of the driver and the fellow passenger other than the driver, the display 9 installed in front of the fellow passenger, and the other information acquired by the out-of-vehicle camera 3. A control device 11 is provided which creates a numerical question based on the number information on the license plate of the vehicle, displays it on the display 9, and enables the passengers to enter questions and answers.

The vehicle exterior camera 3 includes a front camera 3A that images the front of the vehicle, a rear camera 3B that images the rear of the vehicle, a right camera 3C that images the right side and the right rear of the vehicle, and a left camera that images the left side and the left rear of the vehicle. 3D and.

The front camera 3A is disposed, for example, in the upper center of the front windshield, has an optical axis that is directed obliquely downward to the front of the vehicle, and is further forward mainly to the right in plan view so that an oncoming vehicle can be imaged. The optical axis is set, or the imaging range is set to be wide so as to include an oncoming vehicle. The front camera 3A and the rear camera 3B may be configured such that a plurality of cameras having different optical axis directions are arranged in the horizontal direction instead of a single camera so that the range of the imaging region is wide in the left-right direction.

The rear camera 3B is provided, for example, in the central upper part of the rear windshield, has an optical axis that is directed obliquely downward to the rear of the vehicle, and further, is behind the vehicle in the traveling lane of the host vehicle 5 and rear of the right lane. It has an imaging range capable of imaging a vehicle and a vehicle behind the left lane.

The right camera 3C and the left camera 3D are attached to, for example, the right saddle mirror and the left side mirror, or are arranged on the right and left side walls of the vehicle body, and are located on the right side and the right rear side or the left side and the left rear side of the vehicle. It is possible to capture an image of another vehicle passing by passing the host vehicle 5 or an image of another vehicle passing by the host vehicle 5 passing by.

The in-vehicle camera 7 is composed of a front seat camera 7A that images the occupants in the driver's seat 13 and the passenger seat 15, and a rear seat camera 7B that images the right seat occupant and the left seat occupant in the rear seat 17.

The front seat camera 7A is arranged, for example, in the front center part of the indoor roof, and is capable of capturing images of the driver and passengers seated in the driver's seat 13 and the passenger seat 15. The existence and behavior of a person can be imaged. The rear-seat camera 7B is arranged, for example, in the central portion of the indoor roof and is capable of capturing images of the rear-seat passengers seated in the right seat and the left seat of the rear seat 17, and the presence of the rear-seat passengers. And the behavior can be imaged.

The vehicle exterior camera 3 and the vehicle interior camera 7 as the image capturing means are configured by cameras using image capturing elements such as a CCD (Charged Coupled Device) and a CMOS (Complementary Metal Oxide Semiconductor).

A display 9 is installed in front of passengers other than the driver, a passenger seat display 9A is installed in front of the passenger in the passenger seat, and a rear seat display 9B is installed in front of the passenger in the rear seat.

The control device 11 is provided with a signal input unit, a signal output unit, a storage unit, a calculation unit, and the like, which are not shown. The signal input unit receives the image pickup signals of the front camera 3A, the rear camera 3B, the right camera 3C, and the left camera 3D of the vehicle exterior camera 3, and similarly, the front-seat camera 7A and the rear-seat camera of the in-vehicle camera 7. The image pickup signal from 7B is input.

In addition, a vehicle speed and position signal of the own vehicle 5 is input from the navigation system 19 installed in the own vehicle 5, and the road traffic information communication system (VICS (registered trademark): Vehicle Information and Communication System) installed in the own vehicle 5 is input. ) 21 inputs information such as traffic volume.

The control device 11 selects another vehicle for which number information is to be acquired from the vehicle speed and position of the host vehicle 5 acquired by the navigation system 19 and the road traffic information communication system 21, traveling lane information, traffic information, and the like. For example, when the road on which the vehicle is traveling is one lane on one side, an oncoming vehicle is selected, and when the vehicle has two or more lanes on each side, an oncoming vehicle, or a vehicle passing over the side of the vehicle 5 or the vehicle 5 overtaking. Select the next vehicle to pass through.

Then, a numerical question is created based on the number information of the license plate of the other vehicle acquired by the camera 3 outside the vehicle, and is displayed on the display 9 to give a question to the fellow passenger. Furthermore, it is controlled to allow the passenger to enter an answer to the question via the display 9.

Further, the control device 11 analyzes the behavior (movement) of the driver based on the imaging information of the front seat camera 7A, and when the driver starts the numeral game system 1 or inputs an answer, the numeral is displayed. The game system 1 is automatically stopped.

According to such an embodiment, since the numerical question is created and displayed on the display 9 installed in front of the fellow passenger other than the driver based on the number information of the license plate of the other vehicle, the answer is given. The boredom of the passenger can be distracted without disturbing the driving of the driver.

Further, since the control device 11 allows the passenger to enter the question and input the answer, safe driving can be ensured without causing any trouble to the driving of the driver.

Next, one embodiment is shown in FIG. The control device 11 is configured as shown in FIG. The control device 11 includes a license plate information acquisition vehicle selection unit 23, a license plate information acquisition unit 25, a passenger age estimation unit 27, a driver operation determination unit 29, a system forced stop unit 31, and a problem creation unit 33. And a response difficulty time setting unit 35, an answer difficulty setting unit 37, an answer creating unit 39, an answer correction unit 41, and a time limit counting unit 43. Next, each component will be described.

The license plate information acquisition vehicle selection unit 23 selects another vehicle from which the license information is acquired from the vehicle speed and position of the own vehicle 5 acquired by the navigation system 19 and the road traffic information communication system 21, traveling lane information, traffic information, and the like. ..

For example, when the vehicle traveling road has one lane on one side, the oncoming vehicle is selected, and when the vehicle has two or more lanes on each side, the oncoming vehicle, the vehicle passing over the side of the own vehicle 5, or the own vehicle 5 Select a vehicle to pass by.

The license plate information acquisition unit 25 acquires the license information of another vehicle by the camera 3 outside the vehicle. For example, when the vehicle traveling road is one lane on one side, the front camera 3A acquires the number information of the oncoming vehicle 45 as shown in FIG.

Further, when the vehicle is traveling on two or more lanes on one side, for example, on the center line side in the case of three lanes on one side, as shown in FIG. 5, the front vehicle 3A and the left side camera 3D allow the vehicle 5 to pass and pass. The number information of the vehicle 47 in the left lane is acquired. When raising the difficulty of the question to be described later, the front camera 3A acquires the number information of the oncoming vehicle 49. Since it is considered that the oncoming vehicle 49 passes more frequently than the own vehicle 5 passes the forward vehicle 47 traveling in the left lane, the difficulty is increased by reaching the predetermined count number that sets the time limit until answering earlier. By doing.

Further, when the vehicle is traveling on two or more lanes on one side, for example, on the road shoulder side in the case of three lanes on one side, as shown in FIG. 6, the rear camera 3B and the right side camera 3C pass over the own vehicle 5. The number information of the succeeding vehicle 51 on the right lane is acquired.

Further, in the case of two or more lanes on one side, for example, three lanes on one side, when the vehicle is traveling in the central lane, as shown in FIG. 7, the front vehicle 3A and the left side camera 3D allow the vehicle 5 to overtake and pass. The number information of the forward vehicle 53 in the left lane is obtained. When increasing the difficulty of the question to be described later, the rear camera 3B and the right camera 3C acquire the number information of the succeeding vehicle 55 in the right lane passing over the own vehicle 5. Since it is considered that the succeeding vehicle 55 passing the right lane passes more frequently than the own vehicle 5 passing the forward vehicle 53 traveling in the left lane, the predetermined count number for setting the time limit until reply is earlier. It depends on the difficulty level being reached.

The passenger age estimating unit 27 determines the physique (body size) and behavior of the passenger in the passenger seat 15 and the rear seat 17 based on the imaging information of the front seat camera 7A and the rear seat camera 7B, for example, the body and Age is estimated from the movement of the head based on whether the person is calm.

The driver operation determination unit 29 performs image analysis based on the imaging information of the front seat camera 7A to recognize and determine the driver's operation. For example, the determination is made by analyzing the movement of the skeleton of the driver from the captured image and recognizing that the driver sitting in the driver's seat 13 has operated the passenger seat display 9A in front of the passenger seat 15.

The system forced stop unit 31 stops the number game system 1 when the driver operation determination unit 29 determines that the driver operates the number game system 1 or inputs an answer to a problem through the display 9. Let As a result, the driver cannot enjoy the number game system while driving, so that the driver can concentrate on driving and the driving safety is secured.

The question difficulty level setting unit 37 is configured to include a question creating unit 33 that creates a numerical question and an answer time limit setting unit 35 that sets a time limit for answering the question. The question difficulty level setting unit 37 sets the difficulty level of the question by combining both the difficulty level of the question to be created and the time limit until the answer, so that a numerical game that does not bore the passengers of a wide range of age groups can be achieved. Can be provided.

The problem creating unit 33 estimates the degree of learning based on the estimated age estimated by the fellow passenger age estimating unit 27 and sets the difficulty level of the problem to be created by estimating how much arithmetic can be used. This will automatically provide passengers with a non-boring number problem.

For example, as an example of the numerical problem, it is called a digit number adjustment problem as shown in Table 1, a hole punching problem as shown in Table 2, a so-called ten puzzle (10 puzzle) or make 10 (make 10) shown in Table 3. There are problems.

The digit adjustment problem in Table 1 and the hole punching problem in Table 2 are examples when the acquired license plate information of another vehicle is "42.16" for the first plate and ".3.96" for the second plate. Show as. The number-of-digits adjustment problem is an arithmetic calculation problem in which the number of digits is adjusted, and the difficulty level increases. Therefore, the number of digits used for calculation increases. The hole punching problem is a problem that leads to a correct problem formula from a state in which the answer of the calculation is known. Even in the case of this hole punching problem, the difficulty level increases, so the number of digits used for calculation may be increased.

The problem of 10 puzzles in Table 3 is shown as an example when the acquired license plate information of another vehicle is “13.58”. This 10 puzzle is a game in which a four-digit number is regarded as four single-digit numbers, and 10 is calculated by using four arithmetic operations. Note that all numbers may be used and the numbers may be rearranged freely.

The reply time limit setting unit 35 sets a time limit for reply. A time limit is set as a time until the count value of the number of passing other vehicles passing by the vehicle 5 acquired by the camera 3 outside the vehicle reaches the set predetermined number. Other vehicles passing through include an oncoming vehicle, a vehicle overtaking the own vehicle 5, and a vehicle overtaking the own vehicle 5.

Further, as the outside-vehicle camera 3 that is imaged to count the number of passing vehicles, the same outside-vehicle camera 3 used to acquire the number information by the license plate information acquisition unit 25 is used. That is, the number information of other vehicles is acquired by the vehicle exterior camera 3 which acquires the number information, and the number information is sequentially stored in the storage unit of the control device 11 for each license plate, and the numerical problem is created and the display 9 is displayed. It is designed to be calculated as a count value of the number of passing vehicles based on the number of number information (number of license plates) acquired after being provided to.

The predetermined number of vehicles is set by estimating the number of vehicles passing by other vehicles from the vehicle speed and position of the own vehicle 5 acquired by the navigation system 19 and the road traffic information communication system 21, traveling lane information, traffic volume information, etc. It is automatically set on the vehicle side based on. For example, when driving on a road with one lane on each side, the number of oncoming vehicles that pass within a predetermined time is estimated from the traffic volume information, and the estimated number of passing vehicles and the standard time until answering the question are used as the basis. The standard number is automatically set as standard. As a result, the time limit is automatically set on the vehicle side.

When changing the difficulty level, either change the number of vehicles that set the time limit, or if you are driving on a road with two or more lanes on each side without changing the number of vehicles, obtain number information. This is done by changing the lane of travel of another vehicle. For example, the set number is reduced as the difficulty level increases. In addition, as the difficulty level increases, the lane of the other vehicle that acquires the number information is adjusted to a lane in which the number of passing vehicles is large.

Further, when changing the difficulty level of the problem, the vehicle side automatically performs the change based on the estimated age by the passenger age estimating unit, but the passenger may manually set the difficulty level. In addition, regarding the time limit, a predetermined number is automatically set on the vehicle side automatically based on the estimated number of passing vehicles from the traffic information etc. and the standard time until answering the question. The person may manually change the set value of the predetermined number.

In this way, the time limit can be limited not only based on the time (timer) but also based on the count value of the number of other vehicles passing by the vehicle 5. Since the time limit depends on the driving condition of the host vehicle 5 or the traffic jam condition, the time limit specific to the vehicle is added to the numerical problem, which enhances the fun of the game for the vehicle. Can provide a number game that will not be boring against.

The answer creating unit 39 creates an answer to the question given on the vehicle side. The answer correction unit 41 performs automatic correction on the vehicle side with respect to the answer input by the rider from the display 9. The correct answer and the incorrect answer are displayed on the display 9 which is input according to the correct answer and the incorrect answer. Furthermore, the correct or incorrect answer may be fed back to the passenger by sound, light, incense, or the like. For example, the correct answer is provided with a pleasant sound, light, or scent, and the incorrect answer is provided with an unpleasant sound, light, or scent.

The time limit counting unit 43 counts the number of other vehicles passing by the vehicle 5 in order to determine whether the time limit set on the vehicle side has been reached. As described above, this count value is calculated as the count value of the number of passing vehicles based on the number of number information (number of license plates) acquired after the question is given.

Next, one embodiment is shown in FIG. FIG. 3 shows a control flowchart of the control device 11.

First, in step S1, the number game system 1 is started. The number game system 1 is started by a start switch (not shown) installed on the passenger seat display 9A and the rear seat display 9B. Therefore, the number game system 1 is activated by the operation of the seated passenger.

In step S2, it is determined whether the driver has operated the number game system 1. When it is determined that the operation is performed by the driver, the result is Yes and the process proceeds to step S14 to stop the system.

If No is determined in step S2, the process proceeds to the application difficulty level setting step of step S3. In the application difficulty level setting step of step S3, passenger age estimation is performed in step S4, and the passenger age is created based on the estimated age. The difficulty level of the numerical problem is set, and at the same time, in step S5, the number of vehicles that other vehicles pass by the own vehicle 5 is estimated based on the traveling environment such as traffic information, and the time limit until the answer is given by the own vehicle 5 Set as the number of other vehicles passing by. In step S3, the application difficulty level is set by combining these two settings.

In step S6, the number information of another vehicle passing by the side of the vehicle 5 is acquired. The license plate information acquisition unit 25 processes the image information from the vehicle exterior camera 3 to acquire the license information.

In step S7, a question is generated based on the difficulty level of the question set in step S4 and displayed on the display 9 on which the system has been started.

In step S8, counting of the time limit (passing vehicle number) is started. Then, in step S9, it is determined whether the input is from the driver. If it is determined that the input is from the driver, the result is Yes and the process proceeds to step S16 to issue an alarm and stop the system.

If it is determined in step S9 that the input is not the driver, the determination is No and the process proceeds to step S10. In step S10, it is determined whether or not an answer is input within the time limit, and if the answer is not input within the time limit, the determination is No and the process proceeds to step S15. In step S15, the count value of the time limit (passing vehicle number) is reset, the process returns to step S7, the problem is presented again, and counting is started.

If it is determined in step S10 that the answer is input within the time limit, the answer is Yes and the process proceeds to step S11. In step S11, the answers are matched, and in step S12, the results of the correct answer and the incorrect answer are fed back.

After that, in step S13, based on the feedback result of step S12, a determination is made based on an instruction from the fellow passenger as to whether or not to continue the problem (based on a signal from the operator for a continuation-desired switch or the like) and the operation is continued. In this case, the count value of the time limit (the number of passing vehicles) is reset in step S15, the process returns to step S7, the problem is presented again, and the counting is started.

According to the above-described embodiment, since the numerical question is created and displayed on the display 9 installed in front of the passenger based on the number information of the license plate of the other vehicle, the driver's driving is hindered. The boredom of the passenger can be misled without causing it. Further, since the control device 11 is provided which allows the passengers to set the question and input the answer, safe driving can be ensured without causing any trouble to the driving of the driver.

Further, in the above embodiment, the problem providing is explained using the display 9, but in addition to the problem providing and answering by the display 9, the problem providing by the voice from the speaker and the answer by the microphone may be additionally provided. Of course.

According to at least one embodiment of the present invention, it is possible to provide a number game system for a vehicle that can distract the passengers other than the driver (for example, a child) from being bored when traveling for a long time. Because it can, it is suitable for use in vehicles.

1 Number game system 5 Own vehicle
3 Out-of-vehicle camera (outside vehicle imaging means)
3A front camera 3B rear camera 3C right camera 3D left camera 7 vehicle camera (vehicle imaging means)
7A Front Seat Camera 7B Rear Seat Camera 9 Display 9A Front Seat Display 9B Rear Seat Display 11 Control Device 13 Driver Seat 15 Front Seat 17 Rear Seat 19 Navigation System 21 Road Traffic Information Communication System 23 License Plate Information Acquisition Vehicle Selection Section 25 License Plate Information acquisition unit 27 Passenger age estimation unit 29 Driver operation determination unit 31 System forced stop unit 33 Question making application 35 Answer time limit setting unit 37 Question difficulty setting unit 39 Answer making unit 41 Answer correction unit 43 Time limit counting unit 45 , 49 Oncoming vehicles 47, 53 Forward vehicles 51, 55 Following vehicles

Claims (7)

An image pickup means outside the vehicle for obtaining information on license plates of other vehicles;
An in-vehicle image pickup means for acquiring information on at least the presence and behavior of a driver in the vehicle of the own vehicle and a passenger other than the driver,
A display installed in front of the passenger,
A control device that creates a numerical question based on the number information of the license plate of the other vehicle acquired by the outside-vehicle imaging means and displays the numerical question on the display to enable the passenger to input questions and answers. A number game system for a vehicle, comprising: The number game system for a vehicle according to claim 1, wherein the display is arranged in front of the passenger sitting in a rear seat. The number game system for a vehicle according to claim 1, wherein the display is arranged in front of the passenger sitting in a passenger seat. The control device determines that the driver has operated the number game system or has entered an answer to the problem, and the driver operation determination unit determines that the driver has performed an operation. The number game system for vehicles according to any one of claims 1 to 3, further comprising a system forced stop unit for stopping the number game system. The control device has a question difficulty level setting unit that sets the difficulty level of the question, and the question difficulty level setting unit sets both the difficulty level of the question to be created and the time limit until answering. A number game system for a vehicle according to any one of claims 1 to 4, wherein: The difficulty level of the problem to be created is automatically set based on an estimated age estimated from at least information on the physique of the fellow passenger acquired by the in-vehicle image pickup means. A number game system for vehicles. 6. The time limit is a time until the count value of the number of passing other vehicles passing by the vehicle acquired by the vehicle outside image pickup means reaches a set predetermined number. 6. A number game system for vehicles according to item 6.

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