In-vehicle device

1 . An in-vehicle device comprising:

a parking state detector configured to detect a parking state of a vehicle;

a vehicle cabin situation detector configured to detect a situation in a vehicle cabin of the vehicle;

a child information detector configured to detect presence of a child and position information on the child in the vehicle cabin based on a signal from a seat sensor provided on a child seat in the vehicle cabin;

a temperature information acquisition unit configured to acquire temperature information in the vehicle cabin;

a notification unit configured to, when the child is left in the vehicle cabin, notify outside of the vehicle that leaving of the child has occurred;

a controller configured to, when the vehicle is in the parking state, control a notification mode of the notification unit according to information including the temperature information in the vehicle cabin; and

a vehicle surrounding information acquisition unit configured to acquire surrounding information on the vehicle, wherein

the controller is configured to set a temperature for controlling the notification mode of the notification unit when the acquired surrounding information indicates that there is no person around the vehicle to be lower than a temperature for controlling the notification mode of the notification unit when the acquired surrounding information indicates that there is a person around the vehicle.

2 . The in-vehicle device according to claim 1 , wherein the vehicle surrounding information acquisition unit is configured to acquire surrounding information on the vehicle, wherein

the controller is configured to control the notification mode of the notification unit according to whether there is a person around the vehicle.

3 . The in-vehicle device according to claim 1 , wherein the vehicle surrounding information acquisition unit is configured to acquire surrounding information on the vehicle, wherein

the controller is configured to, when there is a person around the vehicle, cause the notification unit to transmit, to a mobile terminal around the vehicle, information notifying that the leaving has occurred.

4 . The in-vehicle device according to claim 3 , wherein, the controller is configured to, when determining that a situation requiring urgent attention to the child has occurred based on the information including the temperature information in the vehicle cabin, cause the notification unit to execute a notification notifying that the leaving has occurred through a social networking service.

5 . An in-vehicle device comprising:

one or more processors; and

one or more memories communicably coupled to the one or more processors, wherein

the one or more processors are configured to:

detect a parking state of the vehicle;

detect a situation in a vehicle cabin of a vehicle;

detect presence of a child and position information on the child in the vehicle cabin based on a signal from a seat sensor provided on a child seat in the vehicle cabin;

acquire temperature information in the vehicle cabin;

cause a notification unit to notify, when the child is left in the vehicle cabin, outside of the vehicle that leaving of the child has occurred, the notification unit being configured to notify outside of a vehicle including an emergency notification center of a warning;

control, when the vehicle is in the parking state, a notification mode of the notification unit according to information including the temperature information in the vehicle cabin;

acquire surrounding information on the vehicle; and

set a temperature for controlling the notification mode of the notification unit when the acquired surrounding information indicates that there is no person around the vehicle to be lower than a temperature for controlling the notification mode of the notification unit when the acquired surrounding information indicates that there is a person around the vehicle.