JP2004355012A - Destination display device for bus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the flexibility, diversity, and maintainability of a destination display device for bus without spoiling visibility although LEDs are used for a display unit. <P>SOLUTION: A front display unit 6 which uses the LEDs arranged in matrix is installed above the front windshield of a bus, a rear display unit 8 using the LEDs is installed above the rear windshield, and a flank display unit 7 using the LEDs is installed above an entrance door etc. Each display unit is equipped with a partition plate, a filter, etc., on a display surface to improve deterioration in visibility of display contents due to external light. The display unit is controlled by a host controller 1. The host controller 1 makes specified display on the front, rear, or flank display unit 6, 7, or 8 according to a command from an on-vehicle machine 3 or contents inputted from an operation unit 2 and set. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a destination display device for a bus mounted on at least one of a front surface, a rear surface, and a side surface of a vehicle body, wherein a display unit for displaying a destination according to an operation is provided, and particularly, the display unit is configured using LEDs. The present invention relates to a destination display device for a bus.

  2. Description of the Related Art Conventionally, for example, a destination display of a bus is performed by using a mechanical destination display device installed at a predetermined position in front, side, and rear of the bus. The destination display device includes a pair of drums that can be rotated forward and backward, a cloth film wound between the drums and on which a plurality of destination names are printed, a motor and a driving mechanism that rotates the pair of drums forward or reverse, and a cloth. A fluorescent lamp for illuminating the character-exposed surface of the film from the back, and a controller which is installed near the driver's seat and supplies a predetermined power to the motor until a desired destination name is displayed by an operation of a driver or the like. Have been.

  To change the destination display, when information corresponding to the destination of the bus is input to the in-vehicle device connected to the controller, the cloth film is directed upward or downward based on the operation of the controller input from the in-vehicle device. It is wound up, and in the process, the destination name is sequentially exposed on the display window. When the desired destination name appears in the display window, the movement of the cloth stops.

  However, according to the conventional bus destination display device, since printing is performed on a cloth film in consideration of all destinations, a long waiting time is required to display a desired destination when the number of destinations is large. There is. Also, if a new destination name is to be added on the way, replacement or readjustment of the cloth film is indispensable, and a lot of time must be devoted to the work for this. Further, the conventional destination display device can only display a message having a single content such as "go to xxx", and there is a limit to the service to the user by the guidance display. In addition, there is a problem that the cloth film becomes dirty due to long-term use and the aesthetic appearance is deteriorated, and there is a disadvantage that the fluorescent lamp for illumination has a long life and is relatively frequently replaced. Furthermore, since the rotating mechanism is provided, a failure easily occurs.

  In order to solve this inconvenience, the present inventor has previously made a prototype of a destination display device using LEDs (light emitting diodes) arranged in a matrix in a display unit. However, when this was mounted on a bus and a practical test was attempted, in a bright place under direct sunlight, even when using the currently available highest-brightness LED, it was sometimes difficult to visually confirm the display state. This is an issue in practical application. However, it has also been found that a bus destination display device using LEDs can be realized as long as the problem of display visibility is solved.

  Accordingly, it is an object of the present invention to provide a bus destination display device that uses versatile, versatile, and easy-to-maintain buses without impairing visibility while using LEDs as indicators.

In order to achieve the above object, the present invention provides a front display unit provided on the front of a bus,
An operation unit having a side display unit provided on the side of the bus, a storage unit for storing information on a destination, an input unit for inputting destination specification information, and a display unit for displaying the destination specification information; A plurality of stops including the destination on the side display unit, based on the destination designation information from the unit and the information on the destination read from the storage unit, the front display unit displaying the destination from a distance. A controller that displays the name in a legible manner from a nearby location, does not change the destination displayed on the front display unit until it reaches an end point, and switches the display content of the side display unit according to the progress. A destination display device for a bus is provided.

  Further, in order to achieve the above object, the present invention provides a display unit that displays a predetermined pattern by arranging a plurality of LEDs in a matrix and selectively driving them, in an environment where external light exists. The structure is provided with visibility improving means for making the lighting state of the LED visible even below.

  According to this configuration, by arranging the plurality of LEDs in a matrix, characters, numerals, symbols, and the like can be freely displayed. Further, the LED is suitable for miniaturization, weight reduction, and thinning, and can be mounted without protruding from the vehicle body surface. The visibility improving means prevents the visibility of display by the LED from being reduced by irradiating the light emitting portion of the LED with sunlight or strong illumination light. Therefore, it is possible to improve versatility, versatility, and maintainability without impairing visibility while using the LED.

  The visibility improving means may use a partition plate provided on the light emitting surface of the display unit so as to partition the upper and lower rows of the LED rows in the horizontal direction of the display unit.

  According to this configuration, by providing the partition plate in the horizontal direction and at regular intervals in the vertical direction, external light during the daytime is almost always radiated obliquely from above. And the visibility of the LED display can be improved.

  The visibility improving means may have a polarizing property, and may use a light transmitting filter provided on a light emitting surface of the display unit.

  According to this configuration, the light-transmitting filter having a polarizing property has a minute polarizing member inside, can effectively block external light, and has a display content even when viewed from a place close to the display unit. Does not cause any defects. Further, since the light-transmitting filter has a small thickness, a desired display portion can be obtained even when a member having a large thickness cannot be provided on the display surface.

  In addition, the above-described object is to provide a front display unit which is installed at the top of a front window and displays a predetermined pattern by selectively driving a plurality of LEDs arranged in a matrix, and A rear display unit that is installed and displays a predetermined pattern by selectively driving a plurality of LEDs arranged in a matrix, and is mounted on the upper side of a door for boarding, getting off or getting on and off, the matrix A side display unit that displays a predetermined pattern by selectively driving a plurality of LEDs arranged in a shape, and visually recognizes a lighting state of the LEDs on each display unit even in an environment where external light exists. The present invention is also achieved by a destination display device having a configuration having a visibility improving means that enables the destination display device.

  According to this configuration, in the place where the conventional mechanical display device is provided, a display unit that enhances visibility at the time of light emission using the LED can be installed, and display and contents can be changed purely electrically, It is possible to configure a destination display device that requires little maintenance and has high visibility that is not different from that of the conventional destination display device.

  The side display unit includes a plurality of display blocks, and in addition to the final stop name, the next stop name and a plurality of further stop names are continuously displayed, or the main stop names up to the end point are displayed in the running order. A configuration that can be used can be adopted.

  According to this configuration, it is possible to simultaneously provide destination guidance to passengers who are about to get on by displaying the names of a plurality of stops, even when getting off the road, or even when the route is different and the end point is a common route. Passengers can know the buses to be boarded properly.

  The visibility improving means may use a partition plate provided on a light emitting surface of the front display unit or the rear display unit so as to partition between upper and lower rows of the LEDs in the horizontal direction.

  According to this configuration, by providing the partition plate in the horizontal direction and at regular intervals in the vertical direction, external light during the daytime is almost always radiated from obliquely above, so that the external light can be effectively removed. And the visibility of the LED display can be improved.

  The visibility improving means may be a light-transmitting filter having a polarizing property, and may be arranged in the side surface display unit.

  According to this configuration, the light-transmitting filter having a polarizing property has a minute polarizing member inside, can effectively block external light, and has a display content even when viewed from a place close to the display unit. Does not cause any defects. Further, since the light-transmitting filter is thin, a display portion which can be installed without protruding from the side surface can be obtained.

  At least one of the front display unit, the rear display unit, and the side display unit may have a configuration including a plurality of red and green LEDs arranged so as to surround a display area in a linear or band shape. .

  According to this configuration, when the running vehicle is the last bus, if the red LED is lit in a frame shape, the user can recognize that it is the last bus.

  Further, the above object is to provide a plurality of LEDs arranged in a matrix, which can be selectively driven to display a predetermined pattern, and to be provided on at least one of a front surface, a rear surface, and a side surface of a vehicle body. Unit, a visibility improving means for visually recognizing the lighting state of the LED even in an environment where external light is present, and an interface for reading data from a storage medium, and a bus based on the data read from the storage medium. The present invention is also achieved by a configuration including a controller for displaying information related to the operation on each display unit.

  According to this configuration, in addition to using a LED that can be used semi-permanently without requiring a separate light source such as a backlight, a display unit that prevents external light from affecting the light-emitting unit by using visibility improvement means, Since a controller that purely controls the display only by installing a storage medium such as a card is provided, a mechanical mechanism as in the related art is unnecessary, a thin and lightweight display unit is provided, and a display content is reduced. It is possible to obtain a destination display device of a bus which can be easily changed, is excellent in versatility, versatility and maintainability, and does not impair the aesthetic appearance during long-term use.

  As the storage medium, a memory card in which information on a destination is stored can be used.

  According to this configuration, the configuration of the device is more compact than a floppy disk or the like, and no inconvenience occurs even when used in a vehicle having a limited installation space. In addition, the memory card itself is convenient to carry, and since data can be rewritten, the destination can be easily changed.

  The controller is connected to an in-vehicle device for performing destination guidance and in-vehicle display by voice, and can reflect data from the in-vehicle device on the display of each of the display units.

  According to this configuration, the display content of the front display unit needs to be changed according to the traveling state, but since the bus cannot be operated on a regular basis unlike a train or the like, it is necessary to provide information for switching the display content. is there. However, by providing this information from the vehicle-mounted device, the display on the front display unit can be easily updated.

  The controller is configured to reduce the amount of light emitted from the LED of each of the display units based on information on engine stop or information on nighttime.

  According to this configuration, the current flowing through the display is controlled so as to decrease with the stop of the engine, and the discharge of the vehicle-mounted battery, which stops charging when the engine stops, is suppressed. As a result, it is possible to prevent the battery from running down.

  The controller can select and light a red frame and a green frame around the display area of the front, rear, or side display unit based on information indicating that the operating vehicle is at the end or at midnight.

  Conventionally, when operating the last bus, the illumination light is switched to red so that the user can recognize that it is the last bus, so that the entire background of the display unit is red. It is possible to perform the same situation with an LED display, but if only the entire surface is lit in red for this purpose, the cost of the apparatus will increase. However, if a red frame is displayed as in the present invention, it is possible to display that it is the last bus, and it is possible to reduce the cost of the device.

  As is clear from the above, according to the bus destination display device of the present invention, the display contents can be changed purely electrically, so that a bus destination display device with improved versatility, versatility and maintainability is provided. be able to.

  Further, according to the bus destination display device of the present invention, the display unit is configured to be able to display a predetermined pattern using a plurality of LEDs arranged in a matrix, and the visibility of the LEDs is increased by providing visibility improving means. Can be visually recognized even in an environment where external light is present, thereby providing a bus destination display device with improved versatility, versatility, and maintainability without impairing visibility while using LEDs. .

  According to the destination display device for a bus of the present invention, the front display unit is installed above the front window, the rear display unit is installed above the rear window, and the boarding, getting off, or getting on and off the door is performed. A side display unit is set up, these are composed of a plurality of LEDs arranged in a matrix, and these LEDs are selectively driven to display a predetermined pattern, and even in an environment where external light is present. By employing a configuration in which visibility improving means for visually confirming the lighting state of the LED of each of the display units is provided, an LED can be used in a place where a conventional mechanical display device is provided, and the LED can be visually recognized at the time of light emission. The display unit can be installed with enhanced characteristics, the display and contents can be changed purely electrically, requires almost no maintenance, and has the same visibility as conventional destination display devices. It is possible to provide a destination display device of the bus Tsu.

  Furthermore, according to the bus destination display device of the present invention, the display unit provided on at least one of the front, rear, and side surfaces of the vehicle body is provided with a plurality of LEDs arranged in a matrix, and these are selectively driven. A visibility can be displayed even in an environment where external light is present, and a lighting condition of the bus is determined based on data read from the storage medium. By providing a configuration including a controller for displaying information related to operation on each of the display units, a bus destination display device that is excellent in versatility, versatility, and maintainability and does not impair the aesthetic appearance during long-term use is provided. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a control system of a bus destination display device according to the present invention. FIG. 2 is a block diagram showing a detailed configuration of the host controller of FIG. 1, and FIG. 3 is a block diagram showing a detailed configuration of one of the display units of FIG.

  The host controller 1 collectively manages the control of the destination display, and is configured using a CPU as shown in FIG. The host controller 1 is connected to an operation unit 2 having a display 2a for displaying and inputting various instructions and a key 2b. Various signals such as a bus condition signal 20 (an engine stop signal, an end bus signal, a night signal, a door signal, etc.) are applied to the host controller 1.

  Further, the on-vehicle device 3 is connected to the host controller 1 according to the RS232C standard. The on-vehicle device 3 is a device for performing various kinds of guidance associated with vehicle traveling and operation by voice and display. A tape deck 4 and an in-vehicle display unit 5 are connected to the on-vehicle device 3.

  The host controller 1 includes a front display unit 6 (front display unit) mounted on the front of the bus and displaying a destination, a side display unit 7 (side display unit) mounted on the side of the bus and displaying a destination and the like, and Each of the rear display units 8 (rear display units) mounted on the rear surface of the bus and displaying a destination is connected using signal lines 9 according to the RS485 standard. As the LEDs of the front, rear or side display units 6, 7, and 8, LEDs with a yellow emission color having excellent visibility are used. A power of +24 V is supplied to each unit.

  In the above configuration, an outline of the operation will be described. Before starting operation, the power of the destination display device is turned on, a predetermined tape is mounted on the tape deck 4, and a destination code or the like is input from the operation unit 2. . The front display unit 6 and the rear display unit 8 display the final destination of the destination, and the side display unit 7 displays the first stop, the next stop, the third stop, and the fourth stop (or the first stop to the last stop). 4 points) are displayed in parallel (a display example will be described later). The display on the front display unit 6 and the display on the rear display unit 8 do not need to be changed until reaching the end point. However, when the display of the transit point is provided, the display of the transit point is turned off when passing through the transit point, The contents of the display unit 7 are switched according to the progress.

  Further, the host controller 1 executes various controls according to the detection of the bus condition signal 20. For example, when the engine stop signal is detected, it means that the battery is not charged. Therefore, a measure for reducing current consumption in the destination display device is taken to prevent the battery from running out. When the last bus signal is detected, a red frame is displayed on the front display unit 6 so that the user can recognize that the last bus is present. Further, when a nighttime signal is detected, the LED is dimmed to prevent halation. Note that a destination display (manual display) using only the operation unit 2 is also possible, and can be performed by the same operation method as in the related art.

  Next, a detailed configuration of the host controller 1 will be described. FIG. 2 shows a detailed configuration of the host controller 1. The CPU 11 includes a ROM 12 storing a program for executing a process for displaying a destination, a RAM 13 for temporarily storing data accompanying the process, and display units 6 to 8. I / F (interface) circuit 14 for performing communication with each of the above, a communication I / F circuit 15 for performing communication with the in-vehicle device 3, and an input / output I / F for performing input / output with the operation unit 2. / F circuit 16, a memory card I / F circuit 17 for reading information of a memory card 18 in which information such as a destination is written, and a DC / DC converter 19 for generating + 5V from 24V of a vehicle-mounted battery. It is configured.

  Various information for each destination is written in the memory card 18. When the information is loaded into the memory card I / F circuit 17, the CPU 11 reads the information and transfers it to the RAM 13. Thereafter, the CPU 11 reads the information from the RAM 13 and executes the destination display control in cooperation with the in-vehicle device 3 via the communication I / F circuit 15 according to the program stored in the ROM 12.

  The operation of the circuit of FIG. 2 will be described. First, when there is an input from the operation unit 2 and the bus condition signal 20, the information is taken into the CPU 11 through the input / output I / F circuit 16. In accordance with this input information, the CPU 11 transmits an instruction to cause the display units 6, 7, 8 to perform display to the display units 6, 7, 8 via the communication interface circuit 14. The display units 6, 7, and 8 execute a predetermined display according to a predetermined agreement. Further, based on the contents set by the operation unit 2, the host controller 1 causes each of the display units 6, 7, 8 to perform a predetermined display and controls the in-vehicle device 3 to cause the in-vehicle display unit 5 to perform the same display. As a result, the display contents outside the vehicle can be confirmed inside the vehicle.

  Next, a detailed configuration of the front display unit 6 will be described with reference to FIG. Although only the front display unit 6 is shown here, the operation principle and the overall configuration of the side display unit 7 and the rear display unit 8 are the same except for the number of LEDs used (or the number of units). Therefore, only the configuration of the front display unit 6 will be described.

  A communication I / F circuit 21 for performing communication with the host controller 1, a CPU 22 connected to the communication I / F circuit 21, a ROM 23 storing a display processing program and connected to the CPU 2 via a bus, A RAM 24 for temporarily storing display data read by the CPU 22, a display control circuit 25 connected to the CPU 22, an LED display unit 26 driven for display by the display control circuit 25, and a DC-converter for converting 24V DC of the vehicle battery to 5V DC. Each of the DC converters 27 is provided.

  FIG. 4 is a sequence diagram for explaining the operation between the host controller 1, the in-vehicle device 3, and the display unit.

  First, when the power is turned on, the display of the display units 6, 7, and 8 is turned off by the initial processing of the host controller 1. Next, the host controller 1 makes an inquiry to the in-vehicle device 3, and in response, data transmission is performed from the in-vehicle device 3 to the host controller 1. The host controller 1 displays the display units 6, 7,. The display data is transmitted to the display unit 8 to perform a predetermined display.

  Next, when the host controller 1 inputs the bus condition signal 20, the display data corresponding thereto is transmitted to the display units 6, 7, 8 to perform a predetermined display. On the other hand, when the host controller 1 receives data from the on-vehicle device 3 or receives data input manually, it is necessary to change the display of the data on the display units 6, 7, and 8? It is checked whether or not the display needs to be changed, and the display data is transmitted to the display units 6, 7, 8 to cause a predetermined display.

  Next, the appearance and a display example of the display unit will be described.

  FIG. 5 is a front view showing a schematic configuration of the front display unit 6. The front display unit 6 is disposed above the front window of the bus. The front display unit 6 has a display section 6a in which a large number of yellow LEDs (for example, 168 × 46 dots) are disposed in a matrix form. It is composed of a main body 6b containing a drive circuit (driver). The display unit 6a has a structure in which the entire number of LEDs is not mounted on one substrate, but is divided into a plurality of substrates and these are connected. FIG. 8 shows a display example by the front display unit 6. A large display size is assigned to the end point, and a route number ("106" in this example), an intermediate stop, an alphabetical display of the end point, and the like are simultaneously displayed in yellow adjacent thereto.

  In a conventional mechanical destination display device, a red lamp is turned on instead of a normal white lamp when the last flight is operated at night. In order to perform the same display in the present invention, the background color of the character may be set to red by using a red light emitting LED, but the configuration and control / drive are complicated, and the cost is increased. A red frame can be displayed around the display section 6a. In other words, LEDs for emitting red light are arranged in a frame shape (linear or band-shaped) around the display unit 6a in advance, and are turned on when the last flight is operated. Since it is burdensome to force the crew members to turn on the lighting, the lighting is automatically performed based on the bus condition signal 20 (end bus signal and night signal).

  FIG. 6 is a front view showing a schematic configuration of the rear display unit 8. The rear display unit 8 is arranged above the rear window of the bus. The rear display unit 8 has a display section 8a in which a large number of yellow LEDs are arranged in a matrix, and a main body section 8b which fixes the display section 8a and incorporates a drive circuit. It is composed of The rear display unit 8 is made smaller in size than the front display unit 6 because the frequency of viewing by the user is lower than that of the front display unit 6. FIG. 9 shows a display example of the rear display unit 8, in which the destination name is displayed in kanji, and a route number (in this example, “85”) is displayed at the beginning.

  FIG. 7 is a front view showing a schematic configuration of the side display unit 7. In the side display unit 7, a display portion 7a horizontally arranged on the upper side, and display portions 7b, 7c, 7d, and 7b, 7c, 7d, and 7 are arranged vertically below the lower side so that a plurality of displays having different contents can be performed. 7e are arranged. These display units 7a to 7e are configured by arranging yellow LEDs in a matrix. The display units 7a to 7e are mounted on the surface of the main unit 7f, and a drive circuit is built in the main unit 7f. FIG. 10 shows a display example of the side display unit 7. The display unit 7a displays a number and a destination name, and the display units 7b to 7e sequentially display transit points. This display content is updated every time display data is received from the host controller 1, as described with reference to FIG. The black triangles arranged between the display units 7b to 7e are provided by silk printing on the surface of the main unit 7f.

  Next, details of the configuration of each display unit will be described.

  11A and 11B show details of the front display unit 6, wherein FIG. 11A is a plan view of one display block constituting the front display unit 6, and FIG. 11B is a side view of FIG.

  On the LED board 28, LEDs 29 of high luminance and yellow emission color are mounted at regular intervals in the vertical and horizontal directions at regular intervals (for example, 6.5 mm pitch in the Y direction and 7.5 mm pitch in the X direction). I have. The emission color of yellow light having a wavelength of 590 nm is known as a color that is most easily perceived by eyes, and conventionally, a high-brightness color was not obtained. However, recently, a high-brightness product that can be used practically has been developed, and the present inventors have confirmed that the brightness is sufficiently satisfactory even for use in applications such as the present invention.

  The leads of the LED 29 are soldered to the driver substrate 30 and are connected to the IC 31 and the like through a wiring pattern on the driver substrate 30. A plurality of supporters 32 for mounting and fixing are mounted on the back surface of the driver board 30.

  As described above, high-brightness LEDs are used, but it is desirable to consider further improvement in luminous efficiency. Therefore, in the present invention, a reflect case 33 having a highly efficient reflection surface formed on the surface of the LED substrate 28 is mounted. The reflection case 33 has a function of pressing each of the LEDs 29 against the LED substrate 28 and a function of a reflector.

  Further, in the reflect case 33, partition plates 34 as visibility improving means are provided upright at regular intervals in the horizontal direction (X direction). The partition plate 34 is a resin molded product having a height of, for example, about 10 mm, and is set to be equal to or higher than the height of the LED 29. When the front display unit 6 is mounted on the vehicle body, the partition plate 34 faces in the horizontal direction. Therefore, if the sun is at or above a certain sunshine angle, such as during the day, the partition plate 34 is interposed in the middle, the sunlight does not directly shine on the LED 29, and the light emission state can be visually recognized well. The visibility improving means has a sufficient light-shielding property which is required only by the partition plate 34. In addition to this, if an eaves or the like is provided on the upper portion, the visibility is further improved.

  Note that the difference between the rear display unit 8 and the front display unit 6 is that the outer shape is different, and the entire configuration other than this is unchanged. A partition plate is also provided as visibility improving means. Therefore, illustration and description of the rear display unit 8 are omitted here.

  Next, the configuration of the side display unit 7 will be described in detail.

  FIGS. 12A and 12B show the details of the side display unit 7, wherein FIG. 12A is a plan view of one display block constituting the side display unit 7, and FIG. 12B is a side view of FIG.

  On the LED board 35, high-brightness yellow LEDs 36 are mounted at regular intervals in the vertical and horizontal directions (at a pitch of 3 mm in both the vertical and horizontal directions). The LED 36 used here is smaller in size than the LED 29 used for the front display unit 6 and the like, and therefore has a smaller mounting pitch. This is because the front display unit 6 must be able to read the display content from a considerable distance, whereas the side display unit 7 is seen very close to the bus, and it becomes difficult to see if the LED has a large diameter and the pitch is coarse. is there. Each of the LEDs 36 is partitioned by a partition wall of the reflect case 37 like a honeycomb. Since the inner surface of the reflect case 37 is coated with aluminum, the light of the LED 36 is efficiently reflected, and the amount of light emitted from the side display unit 7 is increased.

  Also in this side display unit 7, visibility improving means is provided. However, since the pitch is narrow due to the small size of the LED 36, a partition plate used in the front display unit 6 cannot be used.

  Therefore, in the present invention, an optical display filter 38 (light transmitting filter), which is a kind of polarizing filter, is provided so as to cover the surface of the reflect case 37. The optical display filter 38 has a small louver incorporated in a plastic plate having a thickness of about 1 mm, for example. A commercially available product is “Light Control Film (P-1 / A-1 / PN, etc.)” manufactured by Sumitomo 3M Limited, which is easily available.

  A driver substrate 39 on which a wiring pattern is formed is disposed on the back surface of the LED substrate 35, and a driver IC 40 and electronic components 41 are mounted on the driver substrate 39.

  FIG. 13 is a block diagram showing a display control / drive circuit 60 built in the side display unit 7.

  The LED 36 is yellow and includes a control circuit 61 and data and common drivers 62 and 64. The data driver 62 drives the LED 36 mounted on the display block 42 having the configuration shown in FIG. 12, and the common driver 64 drives the common terminal of the LED 36. The control circuit 61 controls the drivers 62 and 64 based on a command from the host controller 1 and executes display control of desired contents.

  As described above, according to the present invention, an LED is used as a display element, and a visibility improving means is provided for the LED so that strong external light such as sunlight is hardly directly irradiated. For that reason, the need for maintenance has almost disappeared. Further, when the destination content is changed, it is only necessary to electrically add data without removing equipment mounted on the vehicle.

  As a display for characters and the like, a liquid crystal (LCD) display with a backlight may be used. The liquid crystal display has an advantage that it can be seen from an angle of about 360 °, but is difficult to see due to insufficient contrast, and its size is limited. In addition, since the backlight has a lifetime, replacement at a certain cycle becomes necessary.

  Further, in the present invention, the destination is changed by the memory card 18, but may be changed by another storage medium such as a floppy disk, a magnetic tape, or an optical disk. Alternatively, a computer installed in a business office or the like and the host controller 1 may be connected by a cable to perform data transfer.

  Furthermore, in the above description, the destination display device of the bus has been described, but the present invention is not limited to a business bus, and a train, a train, a vehicle such as a traveling vehicle in a factory, and a traveling crane. The present invention can be applied to all traveling objects such as elevators and the like that need guidance.

  Further, the visibility improving means is not limited to the partition, and may have another configuration, for example, a configuration in which each LED is provided with a cylindrical hood, or a configuration in which a gutter-shaped hood is provided like a traffic signal. it can.

3 is a block diagram illustrating a configuration of a control system of the bus destination display device according to the present invention. FIG. 2 is a block diagram illustrating a detailed configuration of the host controller of FIG. 1. FIG. 2 is a block diagram illustrating a detailed configuration of one of the display units in FIG. 1. FIG. 4 is a sequence diagram illustrating a cooperative operation among the three members of the host controller, the vehicle-mounted device, and the display unit according to the present invention. It is a front view showing the schematic structure of the front display unit concerning the present invention. It is a front view showing the schematic structure of the rear display unit concerning the present invention. It is a front view showing the schematic structure of the side display unit concerning the present invention. FIG. 4 is a screen diagram showing a display example by a front display unit. FIG. 7 is a screen diagram showing a display example by a rear display unit. FIG. 7 is a screen view showing a display example by a side display unit. The front and rear display units are shown in detail, where (a) is a plan view of one display block constituting the front display unit, and (b) is a side view of (a). The details of the side display unit are shown, (a) is a plan view of one display block constituting the side display unit, and (b) is a side view of (a). FIG. 4 is a block diagram showing a display control / drive circuit built in the front, rear and side display units.

Explanation of reference numerals

REFERENCE SIGNS LIST 1 Host controller 2 Operation unit 3 On-board unit 6 Front display unit 6a, 7a to 7e, 8a Display unit 7 Side display unit 8 Rear display unit 17 Memory card I / F circuit 18 Memory card 20 Bus condition signal 34 Partition plate 38 Optical display Filter

Claims (3)

A front display unit provided on the front of the bus,
A side display unit provided on the side of the bus,
A storage unit for storing information about the destination;
An input unit for inputting destination designation information, and an operation unit having a display unit for displaying the destination designation information,
Based on the destination designation information from the operation unit and the information on the destination read from the storage unit, the front display unit displays the destination so that it can be read from a distance, and the side display unit includes the destination including the destination. A controller that displays the name of the stop readable from nearby, does not change the destination displayed on the front display unit until it reaches the end point, and switches the display content of the side display unit according to the progress. A destination display device for a bus, comprising:   The destination display device for a bus according to claim 1, wherein the front display unit and the side display units include a plurality of LEDs arranged in a matrix. The side display unit has a horizontal display unit, each of which is configured by arranging a plurality of LEDs in a matrix, and a plurality of vertical display units arranged in a horizontal direction with a predetermined interval,
The controller displays the destination on the horizontal display unit, and switches the next stop name and a plurality of further stop names on the plurality of vertical display units or a plurality of main stop names according to the progress. 3. The destination display device for a bus according to claim 2, wherein the destination is displayed.