JP2015024740A - In-vehicle display and in-vehicle information display device for movable body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-vehicle display and in-vehicle information display device which can provide an occupant with a safer and more comfortable boarding space by adding a new function.SOLUTION: This invention provides an in-vehicle display 5 that displays information in a vehicle moving by external power supply, wherein the in-vehicle display 5 is able to switch to illumination light display that can illuminate the surroundings on the basis of a predetermined condition or with a manual change-over switch. This invention also provides an in-vehicle information display device that makes the in-vehicle display perform illumination light display according to a physical relationship with an emergency lamp, a vehicle occupancy, or the like.

Description

  The present invention relates to an in-vehicle display and an in-vehicle information display device for a moving body.

  In recent years, an in-vehicle display has been installed for displaying information in a vehicle and is used as an effective means for transmitting information to passengers in the vehicle (see Patent Document 1). Some in-vehicle display devices display LEDs by arranging LEDs in a plane and controlling the lighting of the LEDs to display character information, and display images by controlling the transmittance of liquid crystal disposed on the surface of the backlight.

  Conventionally, a cold cathode fluorescent lamp (CCFL) that discharges light into a tube in which mercury or a rare gas is sealed and strikes a phosphor against the phosphor to emit light has been employed. In recent years, the adoption of white LEDs with good luminous efficiency has been accelerated. This is because the white LED is mercury-free, has high luminous efficiency and excellent power saving performance, and has a lower brightness over time than CCFL.

  In addition, a vehicle that is supplied with power from the outside is provided with a preliminary illumination device in the vehicle in preparation for a power failure from the outside. This preliminary illumination device is required to have at least 2 incandescent lamps with a brightness of 10 W per 10 m of the vehicle, but it is not sufficient as an illumination environment. In addition, since the auxiliary lighting device is supplied with power from a battery provided in the moving body, there is a possibility that the lighting in the vehicle cannot be maintained if the power failure lasts for a long time. Therefore, the preliminary illumination device is required to save power as much as possible.

  Therefore, application of an LED element (light emitting diode that emits light when a voltage is applied) as a power-saving luminescence source has been studied. There are concerns about problems such as insufficient illuminance of LEDs for illumination of railway vehicles, but due to recent technological advances in LED elements, the problem of insufficient illuminance that has been a concern has been resolved, and this technology can also be used as the main illumination of railway vehicles. It has become a level.

  As described above, in recent years, an illumination device using an LED as a light source and an in-vehicle display are installed in the vehicle. Therefore, both of them are used to individually illuminate the lighting LEDs according to the vehicle position and transmit the current position information of the vehicle position between the stations (see Patent Document 2). The function will be performed by the passengers and is not sufficient.

JP-A-5-319267 JP 2012-20687 A

  Various devices having specific functions are used in the vehicle. If this function can be shared by a single device, the installation cost of the device will be reduced, leading to a reduction in vehicle cost and vehicle weight. Further, it is desired to provide passengers with a safer and more comfortable riding space than before by providing new functions without adding devices, that is, to improve the in-vehicle environment.

  As described above, there is still much room for improvement in the utilization of light emitters used in vehicles. Accordingly, the inventors have studied the utilization of light emitters such as LEDs used in the vehicle, and have completed the invention of a new in-vehicle display and in-vehicle information display device.

  The present invention provides an in-vehicle display and an in-vehicle information display device that can provide a safer and more comfortable boarding space for passengers than in the past by adding new functions to the in-vehicle display and the information display device. With the goal.

  The invention described in claim 1 is an in-vehicle display that displays information in a vehicle that is powered by an external power supply and moves around the vehicle, based on a predetermined condition or by a manual changeover switch. An in-vehicle display characterized in that it can be switched to illumination light display that can be irradiated.

  During normal times, an in-vehicle display that displays useful information for passengers is displayed with illumination light that can be used for illumination with increased brightness as necessary. When necessary, for example, an in-vehicle display is automatically displayed as an illumination light in accordance with a predetermined voltage condition of the external power source at the time of a power failure or the like. Moreover, it can also switch to illumination light display manually by a crew member's judgment.

  According to a second aspect of the present invention, in the in-vehicle display according to the first aspect, a voltage monitoring device that monitors a voltage of a power supply source is provided, and the voltage monitoring device detects a voltage drop of the power supply source. It detects, outputs a detection signal, and is comprised so that switching to illumination light display is possible based on the detection signal.

  The in-vehicle display is provided with a voltage monitoring device, which detects the voltage drop of the power source of the power supply source by monitoring the voltage of the power source of the power supply source and outputs a detection signal. Based on the detection signal, normal display is switched to illumination light display.

  According to a third aspect of the present invention, in the in-vehicle display according to the second aspect, the first power source fed from the external power source and converted into a low-voltage alternating current and the power source fed from the external power source into a low-voltage direct current It is configured to be able to supply power from both of the storage batteries charged by the converted second power supply, and is normally supplied from the first power supply, and the power supply source can be switched from the first power supply to the storage battery based on the detection signal. It is comprised by these.

  The in-vehicle display is connected to a first power source that converts an external power source to supply alternating current, and a storage battery that is charged by a second power source that is fed from the external power source and converted into a low-voltage direct current. Power is supplied from one power source. The voltage monitoring device monitors the power source of the power supply source and generates a detection signal. The vehicle interior indicator is configured to be able to switch the power supply source to the storage battery based on the detection signal.

  According to a fourth aspect of the present invention, there is provided an information control device that controls in-vehicle information in a vehicle that is powered by the external power source and moves, the in-vehicle display according to claim 2 or 3, the information control device, A terminal device that cooperates between the in-vehicle displays, and at least one of the information control device and the terminal device is provided with a voltage monitoring device that monitors the voltage of the external power source, and the voltage In the vehicle information display device, the monitoring device detects a voltage drop of the power source of the power supply source and outputs a detection signal, and the vehicle interior display performs illumination light display based on the detection signal.

  The in-vehicle information display device in the vehicle is equipped with an information control device for controlling information-related equipment such as an in-vehicle display and voice guidance, and a terminal device that enters between the information control device and the in-vehicle display and associates them. Yes. A voltage monitoring device that monitors the voltage of the power source of the power supply source is provided in at least one of the information control device and the terminal device. And this voltage monitoring apparatus detects the voltage drop of the power supply of the said electric power feeding source, outputs a test signal, and the said in-vehicle indicator performs illumination light display based on the test signal.

  According to a fifth aspect of the present invention, in the in-vehicle information display device according to the fourth aspect, the plurality of in-vehicle indicators are provided in the vehicle, and the plurality of in-vehicle indicators are illuminating light based on the detection signal. The display is performed, and the brightness is determined according to the distance from the emergency light installed in the vehicle.

  Passenger cars carrying passengers are obliged to install emergency lights in order to ensure interior lighting during power outages. When an in-vehicle display is used as an illumination light to illuminate the surroundings, the necessity is low near an emergency light. It is possible to make the illuminance in the vehicle uniform by increasing the brightness of the in-vehicle display at a location away from the emergency light as compared to the in-vehicle display near the emergency light.

  According to a sixth aspect of the present invention, in the in-vehicle information display device according to the fifth aspect, the information control device includes a turn-off priority table, and the light is turned off by receiving the detection signal based on the turn-off priority table. Is determined, and the in-vehicle indicator is turned off.

  Which in-vehicle display is to be used as the lighting device needs to be determined by maintaining the illuminance in the vehicle and the capacity of the internal power supply. The power supply voltage is monitored by the voltage monitoring device. When the voltage from the external power supply decreases due to a power failure, the power supply switching device switches the power supply from the external power supply to the internal power supply. The power stored in the internal power supply is used, and its capacity decreases with time and the voltage decreases. When the in-vehicle display is used as an illuminating device with an illumination light display, the brightness of the in-vehicle display is determined while monitoring the voltage of the power source. Further, the display device is turned off according to a threshold value and a turn-off priority order table that are determined in advance according to the voltage of the power source.

  According to a seventh aspect of the present invention, in the in-vehicle information display device according to the sixth aspect, the turn-off priority in the turn-off priority table has a long distance between the display device and the preliminary illumination device of the vehicle. This is an in-vehicle information display device that is determined to be lower as it goes.

  Since the turn-off priority is determined so as to become lower as the distance to the preliminary illumination device of the vehicle becomes longer, the display device close to the preliminary illumination device is turned off first, and the illuminance in the cabin can be equalized. .

  The invention described in claim 8 is the in-vehicle information display device according to claim 6 or 7, wherein when the plurality of vehicles are connected, the turn-off priority of the turn-off priority table is set for each vehicle. It is an in-vehicle information display device determined based on the boarding rate.

  Since the occupancy rate of each vehicle can be calculated from the air pressure of the air spring provided in each vehicle, the priority of turning off can be determined for each vehicle based on this. A vehicle with a high boarding rate has a large number of passengers, so the order of turning off the lights is lowered as compared with a vacant vehicle with a low boarding rate, and the interior environment is adjusted according to the number of passengers.

  The invention described in claim 9 is the in-vehicle information display device according to any one of claims 4 to 7, wherein the vehicle includes a plurality of doors, and the in-vehicle display is installed on a frame of the door. Has been.

  Since the in-vehicle indicator is installed on the door, the passenger can clearly know the position of the door, and it is easy to guarantee the illuminance necessary for getting on and off.

  The in-vehicle display according to the invention described in claim 1 is an in-vehicle display that displays information in a vehicle that is powered by an external power source and moves, and is based on a predetermined condition or manually. Since it can be switched to illumination light display that can illuminate the surroundings by the changeover switch, the required illuminance in the vehicle can be ensured without an extra emergency light.

  According to the invention described in claim 2, the in-vehicle display according to claim 1 includes a voltage monitoring device that monitors the voltage of the power source of the power supply source, and the voltage monitoring device uses the voltage of the power source of the power supply source. Since it is configured to detect a drop and output a detection signal, and to switch to illumination light display based on the detection signal, it is possible to cope with a drop in the power source of the power supply by the in-vehicle display alone.

  According to the third aspect of the present invention, the in-vehicle display according to the second aspect is configured such that the first power source that is fed from the external power source and converted into low-voltage alternating current and the low-voltage alternating current that is fed from the external power source. Since it is configured to be able to supply power from both of the storage batteries charged by the second power source converted into direct current, and based on the detection signal, it is configured to be able to switch the power supply source to the storage battery, so the voltage of the external power supply decreases Even if it is supplied with power from the storage battery, it can be illuminated.

  The in-vehicle information display device according to the invention described in claim 4 is an information control device for controlling in-vehicle information in a vehicle that is powered by the external power source and moves, and the information control device according to any one of claims 1 to 3. An in-vehicle display, and a terminal device that cooperates between the information control device and the in-vehicle display, and at least one of the information control device and the terminal device is connected to the voltage of the power source of the power supply source. Since a voltage monitoring device for monitoring is provided, the voltage monitoring device detects a voltage drop of the power source of the power supply source and outputs a detection signal, and based on the detection signal, the in-vehicle display performs illumination light display. Thus, it is possible to cope with a decrease in external voltage in the entire vehicle.

  According to the invention described in claim 5, the turn-off priority is determined so as to become lower as the distance between the in-vehicle display and the auxiliary lighting device of the vehicle becomes longer, so that the illuminance in the vehicle can be made uniform. It helps to improve the in-vehicle environment.

  According to the invention described in claim 6, the information control device includes a turn-off priority order table, receives the detection signal based on the turn-off priority order table, determines a turn-off priority order, and the in-vehicle indicator Since the turn-off is automatically turned off, the turn-off priority is automatically determined, and the turn-off priority can be easily changed by changing the contents of the table.

  According to the invention described in claim 7, since the turn-off priority of the turn-off priority table is determined so as to become lower as the distance between the in-vehicle display and the auxiliary lighting device of the vehicle becomes longer, automatic In addition, the illuminance in the car is made uniform, which helps to improve the car environment.

  According to the invention described in claim 8, when the plurality of vehicles are connected, the turn-off priority of the turn-off priority table is determined based on the boarding rate of each vehicle. The interior environment can be improved by providing the corresponding interior lighting.

  According to the invention described in claim 9, since the vehicle includes a plurality of doors, and the in-vehicle indicator is mounted on the frame of the door, the passenger can clearly know the position of the door. And improve the in-vehicle environment. In particular, when evacuating from a vehicle, it is possible to easily specify the door to be evacuated.

It is 1st Example of the in-vehicle information display apparatus containing an in-vehicle indicator. It is 2nd Example of the vehicle interior information display apparatus containing a vehicle interior indicator. It is a processing flowchart which shows the control process of a display control apparatus. It is a schematic diagram of the vehicle carrying the in-vehicle information display device.

  FIG. 1 shows the contents of a first embodiment of the in-vehicle information display device of the present invention. An information control device 11 that controls the contents displayed on the plurality of in-vehicle indicators 5 provided in the plurality of vehicles, a terminal device 12 that is provided in each vehicle and cooperates between the information control device 11 and the in-vehicle display, and a terminal A plurality of in-vehicle indicators 5 controlled by the device are shown.

  As shown in FIG. 4, a vehicle such as a railway that moves by receiving power from the outside receives DC 1500V, 750V, 600V, etc. from the overhead line 41 by the pantograph 42 and the current collector 43. The circuit of the train is roughly divided into a main circuit for the main motor, an air conditioner, and an auxiliary circuit for the lighting circuit. The main motor is supplied with power by a drive circuit that has passed through the main converter, but other air conditioners, lighting devices, and the like are supplied with 100V to 400V, which is a low-voltage first power source converted by the auxiliary power supply 44. The low-voltage alternating current is sent to the power supply device 46 through the rectifier and the storage battery 45 serving as the second power source. The power supply device 46 is provided with a circuit arranged for a plurality of in-vehicle displays, a circuit connected to the illuminance sensor 47, and a circuit connected to the composition control device 48.

  In Japan, it is obliged that the lighting device can be operated by electric power supplied from a storage battery or the like mounted on a railway vehicle in an emergency such as a power failure. For this reason, taking into account the configuration of the power supply device and the capacity of the storage battery or the rectifier, etc., an illumination system having only a power supply device that operates with DC power, or a power supply device that operates with DC and two types of power supplies that operate with AC A lighting system equipped with the device has been introduced in railway vehicles.

  4 includes the function of the information control apparatus 11 of FIG. 1, but may be installed separately, although the formation control apparatus 48 that performs overall control when two or more vehicles are connected to form a train. The voltage of the power supply to the information control device 11 is constantly monitored by a voltage monitoring device (not shown). If the voltage falls below a predetermined value, it is determined that power supply from the outside is stopped, and the power source is switched to the internal power source by a power source switching device having a changeover switch function (not shown).

  When the power source is switched from an external power source to an internal power source by an automatic switch based on a predetermined condition at the time of a power failure or manually by human judgment, the power supply to the normal lighting device is cut off, The lighting is turned off. Usually, the spare light is 10 W incandescent bulbs per 10 m of the vehicle, so if the power outage is at night, the interior of the vehicle becomes very dark. Therefore, the information control device 11 instructs the terminal device 12 installed in each vehicle to increase the brightness of the in-vehicle display 5. In the case of an LED in-vehicle display in response to the command, all the LEDs are turned on. In the case of a liquid crystal in-car display, the liquid crystal is set to the transmission mode so that the backlight is directly emitted to the outside. In both cases, by increasing the luminance, illumination light is displayed, and the surroundings are illuminated to increase the surrounding illuminance.

  The voltage drop of the power supply may be detected by the terminal device 12 provided in each vehicle or the voltage monitoring device provided in the in-vehicle display 5 itself. The voltage monitoring device monitors the voltage supplied from the power source, and the information control device performs control such as turning off some in-vehicle indicators according to the voltage drop.

  Switching to the illumination light display of the in-vehicle display, which is performed automatically or manually in response to the detection signal of the voltage drop of the external power supply, does not have to be performed for all the in-vehicle displays at the same time. Since the emergency light is turned on at the time of a power failure, the in-vehicle display near the emergency light may be displayed with illumination light with reduced brightness or may be turned off. Since the positional relationship between each in-vehicle indicator and the emergency light is known in advance, the turn-off priority can be determined in hardware.

  Further, the illumination light display control of the in-vehicle display can be processed in a software manner based on the relationship between the value of the power supply voltage and the threshold value. FIG. 3 is a flow for determining the turn-off order of the in-vehicle display. The turn-off order is determined according to a predetermined voltage threshold and a turn-off priority table by an arithmetic processing unit (not shown). When power is not supplied from the outside and a power failure occurs, power is supplied from an internal power source such as a battery. The battery voltage is included in the information control device or is monitored by a voltage monitoring device connected to the information control device (S1).

  The monitored battery voltage with a predetermined threshold voltage 1 is compared, and if the battery voltage is not less than or equal to the threshold voltage, monitoring is continued, and if the battery voltage is less than or equal to the threshold voltage, the next threshold 2 is set. (S2).

  In the next step, if the battery voltage is not equal to or lower than the threshold voltage, go to the predetermined turn-off priority table (S9), and if the battery voltage is equal to or lower than the threshold voltage, the comparison with the next threshold value 3 is made. (S3).

  By referring to the turn-off priority table, the in-vehicle display (LCD in-vehicle display here) to be turned off is determined (S10).

  When a plurality of vehicles are connected, it is determined whether or not to perform control based on the boarding rate indicating the degree of congestion because the degree of congestion of passengers varies depending on the vehicle (S11). Here, the boarding rate is calculated by monitoring the total weight of passengers from the air pressure of an air spring that supports the vehicle.

  In the case of determining the priority order for turning off the lights taking into account the boarding rate (Yes in S11), the priority order for turning off the lights is determined so as to turn off the vacant vehicle, and the in-vehicle indicator to be turned off is grasped.

  If Yes in step 3 (S3), the third threshold value is compared with the battery voltage. When the battery voltage is No or less than the threshold voltage 3, go to the predetermined turn-off priority table (S7), and when the battery voltage is less than or equal to the threshold voltage, all in-vehicle indicators are turned off. Be grasped.

  In the case of No in step 4 (S4), the in-vehicle indicator (herein, the LCD in-vehicle indicator) that is turned off is grasped by referring to the turn-off priority order table according to the threshold (S7) (S8).

  When it is determined whether or not all the in-vehicle indicators are turned off, a command to turn off is issued to each in-vehicle indicator that is desired to be turned off (S6), and the in-vehicle indicators that have received the command are turned off.

  Next, FIG. 2 will be described. When a person detects that the external power supply has failed, and manually operates the control device 21, a signal from the control device 21 is transmitted to the terminal device installed in each vehicle, and the terminal device increases the brightness of the in-vehicle display. Control to raise. Since the power failure of the external power supply can be recognized by either the terminal device or the in-vehicle display device itself, control for increasing the brightness of the in-vehicle display device can be performed without a signal from the control device.

  As shown in FIG. 4, a vehicle usually has a plurality of doors, and the top of the door frame is often selected as the installation location of the in-vehicle display. Since the position of the door is clearly shown to the passenger in the dark car at the time of a power failure, it is useful for guiding the passenger. For example, when a passenger is taken down from a vehicle stopped due to a power failure, the passenger may want to be guided to the side opposite to the side through which the opposite vehicle passes. In that case, the brightness of the in-vehicle display of the door that lowers the passenger is increased, and the in-vehicle display on the opposite side is turned off, so that the door on the side of exiting the passenger can be clearly shown.

  The embodiments of the present invention have been described above with reference to the drawings. However, the specific configuration is not limited to the embodiments, and modifications within the scope not departing from the gist of the present invention may be added. Included in the range.

5 LCD in-vehicle display (in-vehicle display)
11, 21 Information control device 12, 22 Terminal device 41 Overhead wire 42 Pantograph 43 Current collector 44 Auxiliary power device 45 Rectifier, storage battery 46 Power supply device 47 Illuminance sensor 48 Display control device 49 In-car display 50 Door

Claims (9)

An in-vehicle indicator that displays information in a vehicle that is powered by an external power source and moves.
An in-vehicle display device configured to be switchable to illumination light display that can irradiate the surroundings based on a predetermined condition set in advance or by a manual changeover switch.   A voltage monitoring device that monitors the voltage of the power source of the power supply source is provided, and the voltage monitoring device detects a voltage drop of the power source of the power supply source and outputs a detection signal, and based on the detection signal, displays the illumination light The in-vehicle display device according to claim 1, wherein the display device is switchable.   It is configured to be able to supply power from both the first power source fed from the external power source and converted to low-voltage alternating current and the storage battery charged by the second power source fed from the external power source and converted to low-voltage direct current. The in-vehicle indicator according to claim 2, wherein power is supplied from the first power source and the power source can be switched from the first power source to the storage battery based on the detection signal. An information control device that controls in-vehicle information, a vehicle display device according to claim 2, and the information control device and the vehicle display device are linked in a vehicle that is powered by the external power source and moves. A terminal device, and
At least one of the information control device and the terminal device is provided with a voltage monitoring device that monitors the voltage of the power source of the power supply source,
The in-vehicle information display device, wherein the voltage monitoring device detects a voltage drop of the power source of the power supply source and outputs a detection signal, and the in-vehicle display performs illumination light display based on the detection signal.   The vehicle is provided with a plurality of in-vehicle indicators, and based on the detection signal, the plurality of in-vehicle indicators perform illumination light display, and the brightness is at a distance from an emergency light installed in the vehicle. The in-vehicle information display device according to claim 4, wherein the in-vehicle information display device is determined according to the requirements.   The in-vehicle information display device according to claim 5, wherein the information control device includes a turn-off priority order table, receives the detection signal based on the turn-off priority order table, determines a turn-off priority order, and turns off the in-vehicle display. .   The in-vehicle information display device according to claim 6, wherein the turn-off priority set in the turn-off priority order table is made lower as the distance between the in-vehicle display and the reserve light of the vehicle becomes longer.   The in-vehicle information display device according to claim 6 or 7, wherein when the plurality of vehicles are connected, the turn-off priority of the turn-off priority table is determined based on a boarding rate of each vehicle.   The in-vehicle information display device according to any one of claims 4 to 7, wherein the vehicle includes a plurality of doors, and the in-vehicle indicator is mounted on a frame of the door.

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