JP2010202101A - On-vehicle display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle display rapidly transmitting outside emergency information in a vehicle. <P>SOLUTION: The on-vehicle display includes a sensor for a front seat, a sensor for a rear seat, a control device, and a rear seat display. The control device is equipped with an image changing circuit for outputting the external image signal, and a first microcomputer for outputting the manned state of the rear seat, based on the sensor for the front seat and/or the sensor for the rear seat. The rear seat display is equipped with: a memory for storing any abnormal temperature value; a temperature sensor for measuring the present temperature value, an image processing circuit for outputting the external image signal from the image changing circuit; a panel for displaying the external image signal; a motor for automatically opening/closing the panel; and a second microcomputer for setting the panel in an open state by the motor and displaying emergency information on the panel if the present temperature value exceeds the abnormal temperature value, and if the manned state of the rear seat is output from the first microcomputer, when an engine of a vehicle is stopped. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to display display control in an in-vehicle display device.

In recent years, automobiles have been widely used. Theft of electrical accessories (navigation systems, display devices, etc.) inside the vehicle and in summer, infants are left in the car and the temperature inside the vehicle becomes abnormally high, causing dehydration. There are many cases in which abnormalities occur in the vehicle. When an abnormality occurs in the vehicle as described above, the abnormality was detected by installing various sensors such as attaching a camera to the vehicle or providing a temperature sensor inside the vehicle to respond immediately. In some cases, a wireless function is used to convey that there is an abnormality to the owner of a vehicle far away (see, for example, Patent Document 1).
JP 11-328545 A

  However, in Patent Document 1 shown above, it is only possible to tell that there was an abnormality, and detailed information cannot be conveyed to the owner, and when the owner is far away from the vehicle, it is applied to the vehicle. There is a problem that it takes a long time and may have an adverse effect due to delay in response in an emergency. For example, when only an infant is left in the car during the summer, when the inside of the car reaches a very high temperature, the conventional method of notifying the distant owner of the abnormal state of the vehicle is what is happening. There was a problem that it was impossible to know and the time for the owner to run to the vehicle was delayed, and the situation worsened.

  In order to solve the above-described problems, the vehicle-mounted display device of the present invention includes a control device and a rear-seat display device that is attached to a ceiling that can be viewed by a passenger in the rear seat. In general, the rear seat display device is provided with a temperature sensor for controlling the lighting of the backlight to be lowered in order to suppress the temperature rise in the set at a high temperature. It uses the height of the suspended seat monitor (easy to see from outside the vehicle). The temperature in the rear seat display device when the second or third row seat belt is detected or the seat sensor is detected and the driver's seat belt is not fastened or the seat sensor is not detected. When the sensor exceeds a predetermined temperature (for example, 50 degrees or more), an image indicating an abnormal state is displayed on the rear seat display device (for example, a white SOS blinks on a red screen), and it is more familiar than visually outside the vehicle. Inform emergency third parties of emergency situations.

  As described above, according to the present invention, the temperature in the vehicle is monitored by the temperature sensor inside the ceiling-mounted rear seat display device, and the seat conditions of the rear seat portion and the driver seat / passenger seat are monitored. When it is detected that there is no person in the driver's / passenger's seat, a dangerous state is displayed by the ceiling-suspended rear seat display device, so that detailed information in the vehicle can be sent to people closer to the vehicle You can be notified. That is, since it is possible to promptly notify the danger when an infant is left in the vehicle, it is possible to reduce the accident of heat stroke of a child in the vehicle in summer.

(Embodiment 1)
FIG. 1 is a diagram showing a case where the vehicle is at a normal environmental temperature with the engine stopped in Embodiment 1 of the present invention. Reference numeral 1 denotes a vehicle, 2 denotes a rear seat display device mounted in the vehicle, and 3 denotes a seating sensor or a seat belt attachment / detachment sensor attached to a rear seat of the vehicle. Reference numeral 4 denotes a seating sensor for a driver seat / passenger seat or a seat belt attaching / detaching sensor. 5 has a function of controlling the entire video / audio system by HEAD-UNIT. Reference numeral 6 denotes a harness that connects the HEAD-UNIT 5 and the rear seat display device 2, and can transmit video and audio and communicate between the microcomputers.
FIG. 2 is a diagram showing a state when the temperature in the vehicle becomes extremely high while the vehicle is stopped in the first embodiment of the present invention. 8 is an image representing a dangerous state displayed on the rear seat display device, and 9 is a person outside the vehicle.

FIG. 3 is a diagram showing the configuration of the in-vehicle display device according to Embodiment 1 of the present invention. The in-vehicle display device includes a HEAD-UNIT 5 (control device), a rear seat display device 2, a driver seat / passenger seat sensor 4, and a rear seat sensor 3.
The HEAD-UNIT 5 is attached to the front seat of the vehicle, and the video switching circuit 10 switches the NAVI signal from the navigation system 11, the DVD signal from the DVD system 12, and the terrestrial digital signal from the terrestrial digital unit 13 to switch the rear seat display. The video signal is transmitted to the device 2. The HEAD-UNIT 5 has a built-in microcomputer I14, and controls the video switching circuit 10 as well as a driver / passenger seat sensor or seat belt attachment sensor 4 and a rear seat seat sensor or seat belt attachment sensor. 3 can be detected to identify that a person is sitting in each seat.
The rear seat display device 2 receives the video signal received from the HEAD-UNIT 5 through the harness 6, converts it into a signal for driving the liquid crystal panel 19 by the video processing circuit 18, and causes the liquid crystal panel 19 to display an image. The motor 20 automatically opens and closes the liquid crystal panel. A nonvolatile memory (EEPROM) 15 stores various data such as setting information and abnormal temperature value information. The microcomputer II 16 controls the graphic (OSD) generation circuit 17 to allow the user to provide a graphic such as a GUI. The microcomputer II 16 also controls the motor 20. Further, the microcomputer II16 can communicate the status of each UNIT by communicating with the microcomputer I14 of the HEAD-UNIT5. The temperature sensor 7 detects the current temperature in the rear seat display device 2 and reduces the temperature in the rear seat display device 2 by reducing the brightness of the backlight in the liquid crystal panel 19 when the temperature is high. Has a role to increase life.

  During normal vehicle travel, a video signal can be transmitted from the HEAD-UNIT 5 to the rear seat display device 2 via the harness 6, and a video signal such as a DVD can be viewed on the rear seat. When the engine of the vehicle 1 is stopped, the ACC signal of the vehicle is detected by the microcomputer I14 in the HEAD-UNIT 5, and is transmitted to the microcomputer II16 in the rear seat display device 2 by communication, and the rear seat display that receives the information The microcomputer II 16 in the apparatus 2 controls the motor 20 to automatically store the liquid crystal panel 19 (ceiling side) and stop the image (state shown in FIG. 1).

  When the engine of the vehicle 1 is stopped, the microcomputer II 16, the EEPROM 15, and the temperature sensor 7 in the rear seat display device 2 are supplied with power in the low power mode and monitor the inside of the rear seat display device 2. When the internal temperature of the vehicle 1 rises, the temperature in the rear seat display device 2 also rises, so that a temperature rise in the vehicle 1 is detected by the temperature sensor 7 in the rear seat display device 2. The EEPROM 15 stores abnormal temperature value information Tlimit, and this abnormal temperature value Limit is a value of the temperature sensor 7 when the temperature in the vehicle 1 is extremely increased (for example, 50 degrees). The microcomputer II16 compares the abnormal temperature value Tlimit with the real-time temperature value Ta detected by the temperature sensor 7 at a predetermined timing. The temperature in the vehicle 1 rises and the temperature sensor value Ta detected by the microcomputer II16 is stored in the EEPROM 15. When the stored abnormal temperature value Tlimit is exceeded, it is determined that the temperature inside the vehicle 1 is abnormal, and the abnormal temperature state is transmitted to the microcomputer I14 via the harness 6. Receiving the abnormal temperature state, the microcomputer I14 detects information of the seating sensor (or seat belt attachment / detachment sensor) 4 of the driver seat / passenger seat. Furthermore, the information of the seat sensor (or the seat belt attachment / detachment sensor) 3 of the rear seat is detected. When the driver / passenger seat sensor 4 is not detected and the rear seat sensor 3 is detected, it is determined that there is a person only in the rear seat, and the microcomputer I14 is connected to the microcomputer II16 via the harness 6 and the rear seat manned. Communicate state. The microcomputer II 16 transmits a control signal to the motor 20 based on the rear seat manned state and automatically ejects (opens) the liquid crystal panel 19. Thereafter, the microcomputer II 16 issues a command to the graphic (OSD) generation circuit 17 to output a graphic (emergency information) indicating danger such as “SOS”, and the graphic (OSD) generation circuit 17 outputs the emergency information to the video processing circuit 18. The video processing circuit 18 converts the signal into a signal for driving the liquid crystal panel 19 and displays an image indicating an abnormality such as “SOS” on the liquid crystal panel 19 (state shown in FIG. 2).

  When both the driver / passenger seat sensor 4 and the rear seat sensor 3 are detected, or when neither the driver seat / passenger seat sensor 4 nor the rear seat sensor 3 are detected, the microcomputer I14 transmits the situation to the microcomputer II16. The microcomputer II 16 that has received the information stores (closes) the liquid crystal panel 19 and maintains the state where the video is stopped.

  As described above, according to the present invention, the temperature in the vehicle 1 is measured by the temperature sensor 7 in the rear seat display device 2, the temperature in the vehicle 1 is extremely high (for example, 50 degrees), and the seating sensor (or the seat belt attachment / detachment sensor). ), The liquid crystal panel 19 in the rear seat display device 2 is automatically discharged (opened) and a graphic indicating a dangerous state is displayed on the liquid crystal panel 19. . In particular, by providing a ceiling-suspended rear seat display device 2, a graphic indicating a dangerous state can be displayed at a higher position, so that a person in the vicinity of a vehicle outside the vehicle can quickly and accurately state the state in the vehicle. Can communicate.

  An in-vehicle display device according to the present invention can visually convey a dangerous state in a vehicle (closed room) to the outside visually in a closed room space such as a vehicle, and is a device for ensuring safety in the vehicle. Useful as.

The figure which shows the case where the vehicle is in normal environmental temperature in the engine stop state in Embodiment 1 of this invention The figure which shows a mode when the temperature in a vehicle becomes extremely high in Embodiment 1 of this invention when a vehicle is an engine stop state. The figure which shows the structure of the vehicle-mounted display apparatus in Embodiment 1 of this invention.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Rear seat display device 3 Rear seat seating sensor / seat belt attaching / detaching sensor 4 Driver seat / passenger seating seat sensor / seat belt attaching / detaching sensor 5 HEAD-UNIT
6 Vehicle harness 7 Temperature sensor (in the rear seat display device)
8 Emergency display example 10 Video switching circuit 11 Navigation system 12 DVD unit 13 Terrestrial digital unit 14 Microcomputer I
15 EEPROM
16 Microcomputer II
17 Graphic (OSD) generation circuit 18 Video processing circuit 19 Liquid crystal panel 20 Motor

Claims (2)

A vehicle-mounted display device comprising a front seat sensor, a rear seat sensor, a control device, and a rear seat display device,
The control device includes:
A video switching circuit for switching and outputting a plurality of external video signals;
A first microcomputer that detects the front seat sensor and / or the rear seat sensor and determines whether or not the rear seat is in a manned state;
The rear seat display device is
A non-volatile memory for storing abnormal temperature values;
A temperature sensor that measures the current temperature value;
A video processing circuit for outputting an external video signal output from the video switching circuit of the control device;
A panel for displaying the external video signal output from the video processing circuit;
When the vehicle is in the engine stopped state, the current temperature value measured by the temperature sensor exceeds the abnormal temperature value, and the emergency information is output when the rear seat manned state is output from the first microcomputer of the control device. And a second microcomputer for generating and outputting to the video processing circuit. The first microcomputer determines that the rear seat manned state is detected when only the rear seat sensor is detected;
The rear seat display device further includes a motor for automatically opening and closing the panel,
In the second microcomputer, when the vehicle is in an engine stop state, the current temperature value measured by the temperature sensor exceeds the abnormal temperature value, and the rear seat manned state is output from the first microcomputer of the control device. 2. The in-vehicle display device according to claim 1, wherein the panel is opened by the motor and emergency information is generated and output to the video processing circuit.

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