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WO2022074775A1 - In-vehicle display device and communication connection method - Google Patents

In-vehicle display device and communication connection method Download PDF

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Publication number
WO2022074775A1
WO2022074775A1 PCT/JP2020/038044 JP2020038044W WO2022074775A1 WO 2022074775 A1 WO2022074775 A1 WO 2022074775A1 JP 2020038044 W JP2020038044 W JP 2020038044W WO 2022074775 A1 WO2022074775 A1 WO 2022074775A1
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WO
WIPO (PCT)
Prior art keywords
substrate
display unit
vehicle
display device
unit
Prior art date
Application number
PCT/JP2020/038044
Other languages
French (fr)
Japanese (ja)
Inventor
晋明 鍜治本
Original Assignee
株式会社デンソーテン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソーテン filed Critical 株式会社デンソーテン
Priority to PCT/JP2020/038044 priority Critical patent/WO2022074775A1/en
Priority to JP2022555040A priority patent/JP7475475B2/en
Publication of WO2022074775A1 publication Critical patent/WO2022074775A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof

Definitions

  • the present invention relates to an in-vehicle display device and a communication connection method.
  • a flexible printed board can be used for the communication connection between the base unit and the display unit.
  • a flexible printed substrate is used, there is a concern that durability may be insufficient.
  • a thin coaxial cable or a discrete wire may be routed to make a communication connection between the base unit and the display unit.
  • the length of the thin coaxial cable or the like tends to be long. If the length of the thin coaxial cable or the like becomes long, there is a concern that the quality of signal waveforms such as video signals may deteriorate and the EMC (Electro-Magnetic Compatibility) performance may be insufficient.
  • EMC Electro-Magnetic Compatibility
  • the present invention improves the communication quality between the base unit and the display unit while suppressing a decrease in durability in an in-vehicle display device in which the display unit can be opened and closed with respect to the base unit.
  • the purpose is to provide the technology that can be done.
  • An exemplary vehicle-mounted display device of the present invention is a display device mounted on a vehicle, which includes a base portion installed at a predetermined position of the vehicle, a display portion supported by the base portion so as to be openable and closable, and the above-mentioned display device.
  • a display portion installed at a predetermined position of the vehicle
  • a display portion supported by the base portion so as to be openable and closable
  • the above-mentioned display device When the first substrate provided on the base portion, the second substrate provided on the display unit, and the display unit are opened, the first substrate and the second substrate are brought close to each other to enable non-contact communication. It is equipped with a moving mechanism.
  • the exemplary communication connection method of the present invention is a communication connection method between substrates in an in-vehicle display device in which a display unit can be opened and closed with respect to a base unit, and is caused by a rotational operation of opening the display unit. Therefore, the first substrate of the base unit and the second substrate of the display unit are automatically brought close to each other so as to be capable of non-contact communication.
  • an in-vehicle display device in which a display unit can be opened and closed with respect to a base unit, communication quality between the base unit and the display unit is improved while suppressing a decrease in durability. be able to.
  • FIG. 1 Schematic perspective view of the in-vehicle display device
  • FIG. 1 Block diagram for explaining the electrical configuration of the in-vehicle display device
  • FIG. 1 Block diagram for explaining the electrical configuration of the in-vehicle display device
  • FIG. 1 Schematic cross-sectional view at position AA in FIG.
  • Flow chart showing the flow of communication connection operation between boards in an in-vehicle display device Schematic diagram showing the middle stage of the opening operation of the display unit
  • the expression of the direction with respect to the vehicle equipped with the in-vehicle display device will be used. That is, the direction in which the vehicle travels straight from the driver's seat toward the steering wheel is defined as the "forward direction”. Further, the direction in which the vehicle travels straight from the steering wheel to the driver's seat is defined as the "rear direction”. Further, the direction from the right side to the left side of the driver facing forward, which is the direction perpendicular to the straight line and the vertical line of the vehicle, is defined as the "left direction”.
  • parallel in two directions includes not only a state in which the two directions do not intersect at all no matter how long they extend, but also a state in which they are substantially parallel.
  • orthogonal between the two directions includes not only a state in which the two directions intersect each other at 90 degrees, but also a state in which the two directions substantially intersect at 90 degrees. That is, “parallel” and “orthogonal” each include a state in which the positional relationship between the two has an angular deviation to the extent that the gist of the present invention is not deviated.
  • FIG. 1 is a schematic perspective view of an in-vehicle display device 100 according to an embodiment of the present invention.
  • the in-vehicle display device 100 is a display device mounted on a vehicle. Specifically, the vehicle-mounted display device 100 is arranged on the ceiling of the vehicle interior.
  • FIG. 1 is a view of the vehicle-mounted display device 100 arranged on the ceiling of the vehicle interior as viewed from diagonally lower right rear.
  • the in-vehicle display device 100 is a device for enjoying a television, a DVD image, or the like in the rear seat of the passenger compartment of a vehicle, and is a device for a so-called rear seat entertainment (RSE: Rear Seat Entertainment) system.
  • the in-vehicle display device 100 is connected to, for example, a head unit (not shown) configured as a navigation device, a display audio, or the like by a wire harness.
  • the vehicle-mounted display device 100 is supplied with electric power, video signals, and the like from the head unit.
  • the head unit is located, for example, on the instrument panel in front of the vehicle.
  • the in-vehicle display device 100 does not necessarily have to be a device for an RSE system, and may be a device used alone.
  • the vehicle-mounted display device 100 includes a base unit 1 and a display unit 2.
  • the base portion 1 is installed at a predetermined position of the vehicle.
  • the predetermined location of the vehicle is the ceiling of the vehicle interior.
  • the base portion 1 may be arranged at a place other than the ceiling of the vehicle interior.
  • the place where the vehicle-mounted display device is arranged is also other than the ceiling of the vehicle interior.
  • the display unit 2 includes, for example, a display panel 21 (see, for example, FIG. 3) such as an organic EL panel or a liquid crystal panel, and displays an image.
  • the display unit 2 is supported by the base unit 1 so as to be openable and closable.
  • the display unit 2 is supported by the base unit 1 so as to be openable and closable via a hinge unit 3 (see, for example, FIG. 5 and the like).
  • FIG. 1 shows a state in which the display unit 2 is closed.
  • FIG. 2 is a diagram showing a state in which the display unit 2 of the vehicle-mounted display device 100 shown in FIG. 1 is open.
  • the base portion 1 is a rectangular housing in a plan view from below. As shown in FIG. 2, the base portion 1 has a base recess 1a recessed upward on the lower surface. The base recess 1a has a rectangular shape in a plan view from below.
  • the display unit 2 is housed in the base recess 1a in a closed state. The display unit 2 has a rectangular parallelepiped shape and is flush with the lower surface of the base unit 1 in a closed state.
  • a hinge shaft 31 (for example, see FIG. 4) extending in the left-right direction and constituting the hinge portion 3 is arranged.
  • the display unit 2 is provided so as to be rotatable around the hinge shaft 31.
  • the display unit 2 is brought into the open state shown in FIG. 2 by rotating downward from the closed state shown in FIG. 1 with the hinge shaft 31 as the center.
  • the display unit 2 exposes the screen 2a for displaying an image to the outside in the open state.
  • the screen 2a is arranged on a surface facing the occupant of the vehicle facing forward in a state where the display unit 2 is open. When the display unit 2 is completely open, the screen 2a is parallel to the vertical direction. When the display unit 2 is closed, the screen 2a faces upward and is hidden in the base unit 1.
  • FIG. 3 is a block diagram for explaining the electrical configuration of the vehicle-mounted display device 100.
  • the base unit 1 includes a power supply unit 11, a control unit 12, an image processing unit 13, and an opening / closing motor 14.
  • the open / close motor 14 is a motor that serves as a drive source for rotating the display unit 2 with respect to the base unit 1.
  • the in-vehicle display device 100 includes an opening / closing motor 14 and a power transmission mechanism (not shown) that transmits the power of the opening / closing motor 14 to the display unit 2, so that the display unit 2 can rotate with respect to the base unit 1. ing.
  • the power transmission mechanism includes gears and the like.
  • the power supply unit 11 is a power supply circuit that supplies electric power to various electric components included in the vehicle-mounted display device 100.
  • the power supply unit 11 includes, for example, a circuit for changing the power supply voltage supplied from the head unit.
  • the control unit 12 is a microcontroller that controls the entire in-vehicle display device 100.
  • the control unit 12 includes, for example, a CPU (Central Processing Unit) and a memory.
  • the control unit 12 controls the display of the image on the display unit 2.
  • the video processing unit 13 is configured by an integrated circuit, performs various processing on the video signal input from the head unit, and outputs the processed video signal to the display unit 2.
  • the display unit 2 includes a display panel 21 as described above.
  • the display panel 21 displays a video (image) according to a video signal transmitted from the video processing unit 13 under the control of the control unit 12.
  • the power supply unit 11, the control unit 12, and the video processing unit 13 are arranged on a substrate provided in the base unit 1.
  • electric power, control signals, and video signals are transmitted from the substrate to the display unit 2 (display panel 21).
  • electric power is supplied from the substrate to the display unit 2 by using a cable such as a discrete wire.
  • the control signal and the video signal are transmitted from the substrate to the display unit 2 by using non-contact communication without using a cable.
  • a communication connection structure that enables non-contact communication will be described.
  • the display unit 2 has a speaker that outputs sound
  • the sound signal and the signal for controlling the speaker may also be transmitted from the substrate of the base unit 1 to the display unit 2.
  • FIG. 4 is a diagram schematically showing the configuration of the vehicle-mounted display device 100.
  • FIG. 4 is a side view of the vehicle-mounted display device 100 as viewed from the right, and is a schematic view drawn on the assumption that the right side surface of the base portion 1 is transparent. Further, FIG. 4 shows a case where the display unit 2 is in a closed state. In FIG. 4, the display panel 21 included in the display unit 2 is also shown by a broken line because it cannot be seen from the right side.
  • FIG. 5 is a schematic cross-sectional view taken along the line AA of FIG. In addition, in FIG. 5, some parts above the cut surface are shown by broken lines in order to facilitate understanding of the positional relationship.
  • the vehicle-mounted display device 100 includes a first substrate 10, a second substrate 20, and a moving mechanism 4.
  • the first substrate 10 is provided on the base portion 1.
  • the first substrate 10 is a circuit board. Specifically, the first substrate 10 is arranged inside the base portion 1.
  • the first substrate 10 is fixed to the base portion 1. That is, the first substrate 10 does not move inside the base portion 1.
  • the fixing method of the first substrate 10 to the base portion 1 may be, for example, screwing or bonding.
  • the first substrate 10 spreads in a direction (horizontal direction) orthogonal to the vertical direction.
  • the power supply unit 11, the control unit 12, and the image processing unit 13 described above are arranged on a surface orthogonal to the vertical direction of the first substrate 10, although not shown in FIG.
  • the first substrate 10 has a first transmission line 51.
  • the first transmission line 51 is preferably formed on the lower surface of the first substrate 10. The details of the first transmission line 51 will be described later.
  • the second substrate 20 is provided on the display unit 2.
  • the second substrate 20 is a circuit board. As shown in FIG. 4, in a state where the display unit 2 is closed, the second substrate 20 expands in a direction orthogonal to the front-rear direction.
  • the display panel 21 included in the display unit 2 expands in a direction orthogonal to the vertical direction when the display unit 2 is closed. That is, in the state where the display unit 2 is closed, the direction in which the second substrate 20 expands and the direction in which the display panel 21 expands are orthogonal to each other.
  • the second substrate 20 may be directly fixed to the display panel 21, but may be fixed to the display panel 21 via another member.
  • the second substrate 20 is electrically connected to the display panel 21. In the state where the display unit 2 is closed, the second substrate 20 is arranged in front of the display unit 2 and extends upward.
  • the display panel 21 and the first substrate 10 have a positional relationship facing each other in the vertical direction.
  • the second substrate 20 has a second transmission line 52.
  • the second transmission line 52 is paired with the first transmission line 51 to form a transmission line coupler 5.
  • the second transmission line 52 is arranged on the front surface of the second substrate 20 in a state where the display unit 2 is closed.
  • a transmission line coupler (TLC) is a non-contact connector that enables wireless data communication by capacitive coupling and inductive coupling between transmission lines arranged in close proximity to each other.
  • the transmission line coupler is a known technique, and in the present embodiment, the first transmission line 51 and the second transmission line 52 may have a known configuration.
  • the transmission line coupler 5 exerts its function when the first substrate 10 and the second substrate 20 are in a specific state, and is between the first substrate 10 and the second substrate 20. Enables data communication.
  • the specific state will be described later.
  • the transmission line coupler since the transmission line coupler is used for the non-contact communication, for example, the reliability of the non-contact communication can be improved.
  • the first transmission line 51 and the second transmission line 52 are separated from each other in an orthogonal relationship with each other, and the transmission line coupler 5 is not formed. That is, when the display unit 2 is closed, non-contact communication cannot be performed between the first substrate 10 and the second substrate 20.
  • the state in which the display unit 2 is closed does not correspond to the above-mentioned specific state.
  • the hinge portion 3 is composed of a hinge shaft 31 and a bearing 32.
  • the hinge shaft 31 has a columnar or cylindrical shape extending in the left-right direction.
  • the hinge shaft 31 is fixed to the display unit 2. That is, the hinge shaft 31 is integrated with the display unit 2. Specifically, the hinge shaft 31 is fixed to the front end of the display unit 2.
  • the bearing 32 is provided on the base portion 1 as shown in FIG. Specifically, the base portion 1 has a frame-shaped support portion 1b inside.
  • the bearing 32 is composed of a pair of recesses that are recessed downward from the upper surface of the support portion 1b.
  • the pair of recesses are arranged symmetrically.
  • the recess on the left side opens at the right end
  • the recess on the right side opens at the left end.
  • the bearing 32 is provided in the base portion 1 in the present embodiment, the bearing may be provided in the display portion 2.
  • the bearing may have a cylindrical shape extending in the left-right direction and may be provided at the front end portion of the display unit 2.
  • the hinge shaft is passed through a cylindrical bearing.
  • the hinge shaft is arranged so as not to rotate with respect to the base portion 1, and the display portion 2 having a bearing rotates about the hinge shaft.
  • the hinge shaft is supported by the base portion 1 so as to be movable in the vertical direction with respect to the base portion 1. Details of this point will be described later.
  • the moving mechanism 4 enables non-contact communication by bringing the first board 10 and the second board 20 close to each other when the display unit 2 is opened. According to this, in the vehicle-mounted display device 100 in which the display unit 2 can be opened and closed with respect to the base unit 1, the base unit 1 and the display unit 2 can be connected to each other without using an electric cable such as a thin coaxial cable or a discrete wire. It is possible to communicate data between them. Therefore, it is possible to avoid the occurrence of a situation in which the signal line is disconnected due to the opening and closing of the display unit 2, and it is possible to improve the durability of the in-vehicle display device 100.
  • non-contact communication since non-contact communication can be used, it is possible to improve communication quality and EMC performance by avoiding deterioration of signal waveform quality and lack of EMC performance, which are concerns in the case of a configuration in which a cable for data communication is routed. .. Further, since it is not necessary to route the cable for data communication from the base portion 1 to the display portion 2, it is not necessary to pass a large number of communication cables through the inside of the hinge portion as in the conventional case, and the hinge is used. It is possible to avoid increasing the size of the part.
  • the moving mechanism 4 is provided so that the second substrate 20 can be moved.
  • the moving mechanism 4 brings the second substrate 20 closer to the first substrate 10. Since the moving mechanism only needs to be able to bring the first substrate 10 and the second substrate 20 close to each other, the moving mechanism may be configured to bring the first substrate 10 close to the second substrate 20.
  • the moving mechanism 4 by configuring the moving mechanism 4 to move the second substrate 20 as in the present embodiment, it is possible to suppress an increase in the number of movable portions, and it is possible to avoid complicating the structure of the in-vehicle display device 100.
  • the moving mechanism 4 slides the display unit 2 to bring the second substrate 20 closer to the first substrate 10. With such a configuration, it is not necessary to make the second substrate 20 separable from the display unit 2, and it is possible to avoid complication of the structure. More specifically, the moving mechanism 4 includes a first magnet 41, a second magnet 42, and a rod-shaped member 43.
  • the first magnet 41 is provided on the base portion 1. Specifically, the first magnet 41 is arranged on the base portion 1 away from the first substrate 10. That is, the first magnet 41 is arranged on a member other than the first substrate 10 that constitutes the base portion 1.
  • the first magnet 41 may be arranged on the first substrate 10. However, by arranging the first magnet 41 away from the first substrate 10 as in the present embodiment, the electronic components arranged on the first substrate 10 can be made less likely to be affected by the magnetic force.
  • the number of the first magnets 41 is two.
  • the two first magnets 41 are arranged so as to sandwich the first substrate 10 in the left-right direction.
  • the two first magnets 41 are arranged symmetrically with the first substrate 10 interposed therebetween.
  • the number and arrangement of the first magnets 41 may be changed as appropriate.
  • the first magnet 41 may be singular or may be three or more.
  • the second magnet 42 is provided on the display unit 2.
  • the second magnet 42 is paired with the first magnet 41 to generate a force that brings the first substrate 10 and the second substrate 20 closer to each other. Since the second magnet 42 is used in pairs with the first magnet 41, in the present embodiment, the number of the second magnets 42 is the same as that of the first magnet 41. Further, the second magnet 42 is arranged at a position where the first substrate 10 and the second substrate 20 can be brought close to each other in pairs with the first magnet 41.
  • the second magnet 42 is arranged on the second substrate 20.
  • a configuration in which the two substrates 10 and 20 are brought close to each other by the attractive force of the first magnet 41 and the second magnet 42 is formed with a simple structure in conjunction with the rotational operation of the display unit 2. be able to.
  • the second magnet 42 may be arranged in a portion of the display unit 2 other than the second substrate 20.
  • the first magnet 41 and the second magnet 42 is an electromagnet. With this configuration, the operation of closing the display unit 2 can be easily performed. Further, as a preferred embodiment, the first magnet 41 may be an electromagnet and the second magnet 42 may be a permanent magnet. As a result, it is possible to prevent the weight of the display unit 2, which is a movable body, from increasing.
  • the rod-shaped member 43 is fixed to the base portion 1.
  • the rod-shaped member 43 slides the display unit 2.
  • the display unit 2 is moved by using a magnet and a rod-shaped member as in the present embodiment, it is possible to suppress the complexity of the moving mechanism capable of bringing the first substrate 10 and the second substrate 20 close to each other. Can be done.
  • the rod-shaped member 43 extends in the vertical direction. That is, the display unit 2 is provided so as to be slidable in the vertical direction along the rod-shaped member 43.
  • the rod-shaped member 43 is, for example, cylindrical or cylindrical.
  • the rod-shaped member 43 is arranged above each of the pair of recesses constituting the bearing 32. That is, the moving mechanism 4 includes a pair of rod-shaped members 43 arranged symmetrically.
  • the number and arrangement of the rod-shaped members may be changed as appropriate.
  • FIG. 6 is a schematic cross-sectional view showing the relationship between the rod-shaped member 43 and the hinge shaft 31.
  • FIG. 6 is a diagram assuming a state in which the display unit 2 is closed.
  • the rod-shaped member 43 is specifically arranged on the hinge shaft 31 arranged on the bearing 32.
  • the lower end of the rod-shaped member 43 and the upper end of the hinge shaft 31 arranged on the bearing 32 may be in contact with each other or may be arranged with a slight gap.
  • the lower end of the rod-shaped member 43 is preferably a concave surface or a convex surface along the side surface of the hinge shaft 31.
  • the hinge shaft 31 is provided with a through hole 31a.
  • Two through holes 31a are provided according to the number of rod-shaped members 43.
  • the through hole 31a penetrates in the front-rear direction.
  • the hinge shaft 31 rotates.
  • the through hole 31a penetrates in the vertical direction. That is, when the display unit 2 is completely opened, the rod-shaped member 43 extending vertically can insert the through hole 31a.
  • the through hole 31a overlaps with the rod-shaped member 43 and has a larger area than the rod-shaped member 43 when viewed in a plan view from the vertical direction.
  • a pair of left and right rod-shaped members 43 penetrate the hinge shaft in the vertical direction, and the hinge shaft rotates to the base portion 1. It may be a configuration that is unsupported. Even in this case, the hinge shaft can be configured to be slidable in the vertical direction along the rod-shaped member 43. That is, the first substrate 10 and the second substrate 20 can be brought close to each other. In the case of this configuration, the display unit 2 slides upward due to the attractive force of the magnets 41 and 42 while performing the opening operation (rotational operation).
  • FIG. 7 is a flowchart showing a flow of communication connection operation between boards in the vehicle-mounted display device 100.
  • the display unit 2 Before the start of the flow of FIG. 7, the display unit 2 is in a closed state, and non-contact communication cannot be performed between the first substrate 10 and the second substrate 20.
  • the vehicle-mounted display device 100 starts rotation for opening the display unit 2 (step S1). This rotation is performed by using the open / close motor 14 as a drive source. From the state shown in FIG. 4, the display unit 2 starts rotating downward with the hinge shaft 31 as the center.
  • FIG. 8 is a schematic diagram showing an intermediate stage of the opening operation of the display unit 2. As shown in FIG. 8, when the display unit 2 starts to rotate to open, the magnetic poles of the first magnet 41 and the second magnet 42 approach each other and attract each other. However, before the display unit 2 is completely opened, the hinge shaft 31 cannot move upward because the rod-shaped member 43 comes into contact with the hinge shaft 31.
  • FIG. 9 is a schematic diagram showing a state in which the display unit 2 is completely open.
  • the rod-shaped member 43 can be inserted into the through hole 31a.
  • the N pole of the first magnet 41 and the S pole of the second magnet 42 face each other in the vertical direction and are in a state of attracting each other.
  • the display unit 2 starts sliding upward along the rod-shaped member 43. That is, the approach between the first substrate 10 and the second substrate 20 is started (step S2).
  • the directions of the magnetic poles of the first magnet 41 and the second magnet 42 may be opposite to those of the configuration of the present embodiment.
  • the display unit 2 As the display unit 2 rises, the first substrate 10 and the second substrate 20 that are arranged in parallel with each other come close to each other. When the distance between the first substrate 10 and the second substrate 20 in the vertical direction reaches a predetermined distance, the display unit 2 stops rising. FIG. 10 shows this state.
  • the predetermined distance is a distance at which the first transmission line 51 and the second transmission line 52 form the transmission line coupler 5 and enable non-contact communication between the substrates.
  • the base portion 1 is provided with a stopper that stops the rise of the display portion 2 at the stage where the distance is reached.
  • the display unit 2 may be configured to stop rising due to contact between the first magnet 41 and the second magnet 42.
  • the control unit 12 monitors whether or not non-contact communication is possible (step S3). Whether or not non-contact communication is possible may be determined by using a known handshake communication technique. For example, when non-contact communication becomes possible, the second substrate 20 detects a High signal output from the first substrate 10, and switches the signal output to the first substrate 10 from High to Low by the detection. By detecting the switching of the signal, the control unit 12 determines that non-contact communication is possible.
  • the control unit 12 When it is determined that non-contact communication is possible (Yes in step S3), the control unit 12 permits the display unit 2 to display the image. As a result, the image display on the display unit 2 is started (step S4). That is, in the present embodiment, the vehicle-mounted display device 100 includes a control unit 12 arranged in the base unit 1. The control unit 12 starts displaying an image on the display unit 2 when it is determined that non-contact communication is possible. With such a configuration, it is possible to avoid a situation in which the image display is started in a state where the video signal is not properly transmitted from the base unit 1 to the display unit 2, and the user can be shown an appropriate image. Can be done.
  • the first magnet 41 configured as an electromagnet is turned off.
  • the display unit 2 is lowered, the hinge shaft 31 is fitted into the bearing 32, and the hinge shaft 31 is in a rotatable state. In this state, the display unit 2 rotates upward around the hinge shaft 31, so that the display unit 2 is closed.
  • the display of the image on the display unit 2 is not started indefinitely until it is determined that the non-contact communication is possible.
  • an error may be notified.
  • the error notification may be configured to sound an error sound, or may be an error message display using the screen of the head unit.
  • the opening / closing operation of the display unit 2 may be redone.
  • the exemplary vehicle-mounted display device 100 of the present invention is a display device mounted on a vehicle, and is supported by a base portion 1 installed at a predetermined position of the vehicle and a base portion 1 so as to be openable and closable.
  • the display unit 2 the first substrate 10 provided on the base unit 1, the second substrate 20 provided on the display unit 2, and the first substrate 10 and the second substrate 20 when the display unit 2 is opened. It is configured to include a mobile mechanism 4 that enables non-contact communication by bringing the vehicle closer to each other.
  • the first substrate 10 has a first transmission line 51
  • the second substrate 20 is paired with the first transmission line 51 to form a transmission line coupler 5. It is preferable that the configuration has a transmission line 52.
  • the first substrate 10 is fixed to the base portion 1 and the moving mechanism 4 has a configuration in which the second substrate 20 is brought close to the first substrate 10.
  • the moving mechanism 4 has a configuration in which the display unit 2 is slid so that the second substrate 20 approaches the first substrate 10.
  • the moving mechanism 4 is provided on the first magnet 41 provided on the base portion 1 and the display unit 2, and is paired with the first magnet 41 on the first substrate 10 and the second substrate. It is preferable to have a configuration including a second magnet 42 that generates a force that brings the 20 closer to the base portion 1, and a rod-shaped member 43 that is fixed to the base portion 1 and slides the display portion 2.
  • the first magnet 41 may be arranged on the base portion 1 away from the first substrate 10, and the second magnet 42 may be arranged on the second substrate 20.
  • the vehicle-mounted display device 100 having the above configuration further includes a control unit 12 arranged in the base unit 1, and the control unit 12 starts displaying an image on the display unit 2 when it is determined that non-contact communication is possible. It may be a configuration to make it.
  • the exemplary communication connection method of the present invention is a communication connection method between substrates in an in-vehicle display device 100 in which a display unit 2 is provided so as to be openable and closable with respect to a base unit 1, and is a rotational operation for opening the display unit 2. Therefore, the first substrate 10 of the base unit 1 and the second substrate 20 of the display unit 2 are automatically brought close to each other to achieve a non-contact communication distance.
  • the attractive force of the magnets 41 and 42 is used to bring the first substrate 10 and the second substrate 20 close to each other.
  • a force other than the attractive force of the magnet may be used to bring the first substrate 10 and the second substrate 20 close to each other.
  • the first substrate 10 and the second substrate 20 may be brought close to each other by using the power of the motor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A display device to be mounted in a vehicle, the device comprising: a base part which is to be placed at a given position in the vehicle; a display part which is supported on the base part in such a manner as to be openable and closable; a first substrate which is provided to the base part; a second substrate which is provided to the display part; and a movement mechanism which, when the display part is opened, enables non-contact communication by bringing the first substrate and the second substrate close to each other.

Description

車載表示装置、および、通信接続方法In-vehicle display device and communication connection method
　本発明は、車載表示装置、および、通信接続方法に関する。 The present invention relates to an in-vehicle display device and a communication connection method.
　従来、テレビモニタ等の表示装置を車両の天井に格納可能に搭載する技術が知られる（例えば特許文献１参照）。従来の装置は、車両の天井に設けられたベース部の凹部にテレビ本体を格納する。テレビ本体の一端に設けられた回動軸を介してテレビ本体を回動することにより、テレビ本体をベース部の凹部に格納する。回動軸の反対側端部を凹部の内側に係止することにより、テレビ本体の格納状態を固定する。 Conventionally, a technique of mounting a display device such as a TV monitor so as to be storable on the ceiling of a vehicle is known (see, for example, Patent Document 1). In the conventional device, the TV main body is stored in the recess of the base portion provided on the ceiling of the vehicle. By rotating the TV body via a rotation shaft provided at one end of the TV body, the TV body is stored in the recess of the base portion. By locking the opposite end of the rotating shaft inside the recess, the retracted state of the television body is fixed.
特開２００６－２６４６６４号公報Japanese Unexamined Patent Publication No. 2006-264664
　表示部（例えばテレビ本体）がベース部に対して回動して開閉する構成の場合、ベース部と表示部との間の通信接続のためにフレキシブルプリント基板を利用することができる。ただし、フレキシブルプリント基板を使用する場合には、耐久性の不足が生じることが懸念される。このため、従来においては、フレキシブルプリント基板の替わりに、細線同軸ケーブルやディスクリート線を引き回して、ベース部と表示部との間の通信接続を行うことがあった。 When the display unit (for example, the main body of the television) is configured to rotate with respect to the base unit to open and close, a flexible printed board can be used for the communication connection between the base unit and the display unit. However, when a flexible printed substrate is used, there is a concern that durability may be insufficient. For this reason, in the past, instead of the flexible printed board, a thin coaxial cable or a discrete wire may be routed to make a communication connection between the base unit and the display unit.
　しかし、ベース部と表示部との通信接続に細線同軸ケーブル等が利用される構成とする場合、細線同軸ケーブル等の長さが長くなりやすい。細線同軸ケーブル等の長さが長くなると、映像信号等の信号波形の品質の低下や、ＥＭＣ（Electro-Magnetic　Compatibility；電磁両立性）性能の不足が生じることが懸念される。 However, if a thin coaxial cable or the like is used for the communication connection between the base unit and the display unit, the length of the thin coaxial cable or the like tends to be long. If the length of the thin coaxial cable or the like becomes long, there is a concern that the quality of signal waveforms such as video signals may deteriorate and the EMC (Electro-Magnetic Compatibility) performance may be insufficient.
　本発明は、上記の課題に鑑み、ベース部に対して表示部が開閉可能に設けられる車載表示装置において、耐久性の低下を抑制しつつ、ベース部と表示部との間の通信品質を向上できる技術を提供することを目的とする。 In view of the above problems, the present invention improves the communication quality between the base unit and the display unit while suppressing a decrease in durability in an in-vehicle display device in which the display unit can be opened and closed with respect to the base unit. The purpose is to provide the technology that can be done.
　本発明の例示的な車載表示装置は、車両に搭載される表示装置であって、前記車両の所定箇所に設置されるベース部と、前記ベース部に開閉可能に支持される表示部と、前記ベース部に設けられる第１基板と、前記表示部に設けられる第２基板と、前記表示部が開かれた場合に、前記第１基板と前記第２基板とを接近させて非接触通信を可能とする移動機構と、を備える。 An exemplary vehicle-mounted display device of the present invention is a display device mounted on a vehicle, which includes a base portion installed at a predetermined position of the vehicle, a display portion supported by the base portion so as to be openable and closable, and the above-mentioned display device. When the first substrate provided on the base portion, the second substrate provided on the display unit, and the display unit are opened, the first substrate and the second substrate are brought close to each other to enable non-contact communication. It is equipped with a moving mechanism.
　また、本発明の例示的な通信接続方法は、ベース部に対して表示部が開閉可能に設けられる車載表示装置における基板間の通信接続方法であって、前記表示部を開く回転動作に起因して、前記ベース部が有する第１基板と、前記表示部が有する第２基板とを自動的に接近させて非接触通信可能な距離とする。 Further, the exemplary communication connection method of the present invention is a communication connection method between substrates in an in-vehicle display device in which a display unit can be opened and closed with respect to a base unit, and is caused by a rotational operation of opening the display unit. Therefore, the first substrate of the base unit and the second substrate of the display unit are automatically brought close to each other so as to be capable of non-contact communication.
　例示的な本発明によれば、ベース部に対して表示部が開閉可能に設けられる車載表示装置において、耐久性の低下を抑制しつつ、ベース部と表示部との間の通信品質を向上することができる。 According to an exemplary invention, in an in-vehicle display device in which a display unit can be opened and closed with respect to a base unit, communication quality between the base unit and the display unit is improved while suppressing a decrease in durability. be able to.
車載表示装置の概略斜視図Schematic perspective view of the in-vehicle display device 図１に示す車載表示装置の表示部が開いた状態を示す図The figure which shows the state which the display part of the vehicle-mounted display device shown in FIG. 1 is open. 車載表示装置の電気的な構成を説明するためのブロック図Block diagram for explaining the electrical configuration of the in-vehicle display device 車載表示装置の構成を模式的に示す図The figure which shows the structure of the in-vehicle display device schematically. 図４のＡ－Ａ位置における概略断面図Schematic cross-sectional view at position AA in FIG. 棒状部材とヒンジ軸との関係を示す概略断面図Schematic cross-sectional view showing the relationship between the rod-shaped member and the hinge shaft. 車載表示装置における基板間の通信接続動作の流れを示すフローチャートFlow chart showing the flow of communication connection operation between boards in an in-vehicle display device 表示部の開く動作の途中段階を示す模式図Schematic diagram showing the middle stage of the opening operation of the display unit 表示部が完全に開いた状態を示す模式図Schematic diagram showing the fully open state of the display unit 基板間の非接触通信が可能となった状態を示す模式図Schematic diagram showing a state in which non-contact communication between boards is possible
　以下、本発明の例示的な実施形態について、図面を参照しながら詳細に説明する。以下、車載表示装置の説明においては、車載表示装置を搭載する車両を基準とした方向の表現を用いる。すなわち、車両の直進進行方向であって、運転席からハンドルに向かう方向を「前方向」とする。また、車両の直進進行方向であって、ハンドルから運転席に向かう方向を「後方向」とする。また、車両の直進進行方向及び鉛直線に垂直な方向であって、前方向を向いている運転者の右側から左側に向かう方向を「左方向」とする。また、車両の直進進行方向及び鉛直線に垂直な方向であって、前方向を向いている運転者の左側から右側に向かう方向を「右方向」とする。なお、これらの方向は、単に説明のために用いられる名称であって、実際の位置関係及び方向を限定する趣旨ではない。 Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. Hereinafter, in the description of the in-vehicle display device, the expression of the direction with respect to the vehicle equipped with the in-vehicle display device will be used. That is, the direction in which the vehicle travels straight from the driver's seat toward the steering wheel is defined as the "forward direction". Further, the direction in which the vehicle travels straight from the steering wheel to the driver's seat is defined as the "rear direction". Further, the direction from the right side to the left side of the driver facing forward, which is the direction perpendicular to the straight line and the vertical line of the vehicle, is defined as the "left direction". Further, the direction from the left side to the right side of the driver facing forward, which is the direction perpendicular to the straight line and the vertical direction of the vehicle, is defined as "right direction". It should be noted that these directions are merely names used for explanation, and are not intended to limit the actual positional relationship and direction.
　また、本明細書において、２つの方向が「平行」とは、両者がどこまで延長しても全く交わらない状態のみならず、実質的に平行である状態を含む。また、２つの方向が「直交」とは、両者が互いに９０度で交わる状態のみならず、実質的に９０度で交わる状態を含む。つまり、「平行」および「直交」はそれぞれ、両者の位置関係に本発明の主旨を逸脱しない程度の角度ずれがある状態を含む。 Further, in the present specification, "parallel" in two directions includes not only a state in which the two directions do not intersect at all no matter how long they extend, but also a state in which they are substantially parallel. Further, the term "orthogonal" between the two directions includes not only a state in which the two directions intersect each other at 90 degrees, but also a state in which the two directions substantially intersect at 90 degrees. That is, "parallel" and "orthogonal" each include a state in which the positional relationship between the two has an angular deviation to the extent that the gist of the present invention is not deviated.
＜１．車載表示装置の概要＞
　図１は、本発明の実施形態に係る車載表示装置１００の概略斜視図である。車載表示装置１００は、車両に搭載される表示装置である。詳細には、車載表示装置１００は、車室の天井に配置される。図１は、車室の天井に配置された車載表示装置１００を右後方斜め下から見た図である。 <1. Overview of in-vehicle display device>
FIG. 1 is a schematic perspective view of an in-vehicle display device 100 according to an embodiment of the present invention. The in-vehicle display device 100 is a display device mounted on a vehicle. Specifically, the vehicle-mounted display device 100 is arranged on the ceiling of the vehicle interior. FIG. 1 is a view of the vehicle-mounted display device 100 arranged on the ceiling of the vehicle interior as viewed from diagonally lower right rear.
　車載表示装置１００は、詳細には、車両の車室の後席でテレビやＤＶＤ映像等楽しむための装置であり、いわゆる、リアシートエンターテイメント（ＲＳＥ：Rear　Seat　Entertainment）システム用の装置である。車載表示装置１００は、例えば、ナビゲーション装置またはディスプレイオーディオ等として構成されるヘッドユニット（不図示）とワイヤーハーネスにより接続される。車載表示装置１００は、ヘッドユニットから電力や映像信号等を供給される。ヘッドユニットは、例えば、車両の前方のインストルメントパネルに配置される。なお、車載表示装置１００は、必ずしもＲＳＥシステム用の装置である必要はなく、単独で使用される装置であってもよい。 In detail, the in-vehicle display device 100 is a device for enjoying a television, a DVD image, or the like in the rear seat of the passenger compartment of a vehicle, and is a device for a so-called rear seat entertainment (RSE: Rear Seat Entertainment) system. The in-vehicle display device 100 is connected to, for example, a head unit (not shown) configured as a navigation device, a display audio, or the like by a wire harness. The vehicle-mounted display device 100 is supplied with electric power, video signals, and the like from the head unit. The head unit is located, for example, on the instrument panel in front of the vehicle. The in-vehicle display device 100 does not necessarily have to be a device for an RSE system, and may be a device used alone.
　図１に示すように、車載表示装置１００は、ベース部１と表示部２とを備える。ベース部１は、車両の所定箇所に設置される。本実施形態では、車両の所定箇所は車室の天井である。ただし、ベース部１は、車室の天井以外の場所に配置されてもよい。ベース部１が車室の天井以外の場所に配置された場合には、車載表示装置の配置場所も、車室の天井以外になる。 As shown in FIG. 1, the vehicle-mounted display device 100 includes a base unit 1 and a display unit 2. The base portion 1 is installed at a predetermined position of the vehicle. In the present embodiment, the predetermined location of the vehicle is the ceiling of the vehicle interior. However, the base portion 1 may be arranged at a place other than the ceiling of the vehicle interior. When the base portion 1 is arranged at a place other than the ceiling of the vehicle interior, the place where the vehicle-mounted display device is arranged is also other than the ceiling of the vehicle interior.
　表示部２は、例えば、有機ＥＬパネル又は液晶パネル等の表示パネル２１（例えば図３参照）を含んで構成され、画像を表示する。表示部２は、ベース部１に開閉可能に支持される。詳細には、表示部２は、ベース部１にヒンジ部３（例えば図５等参照）を介して開閉可能に支持される。図１は、表示部２が閉じた状態を示す。図２は、図１に示す車載表示装置１００の表示部２が開いた状態を示す図である。 The display unit 2 includes, for example, a display panel 21 (see, for example, FIG. 3) such as an organic EL panel or a liquid crystal panel, and displays an image. The display unit 2 is supported by the base unit 1 so as to be openable and closable. Specifically, the display unit 2 is supported by the base unit 1 so as to be openable and closable via a hinge unit 3 (see, for example, FIG. 5 and the like). FIG. 1 shows a state in which the display unit 2 is closed. FIG. 2 is a diagram showing a state in which the display unit 2 of the vehicle-mounted display device 100 shown in FIG. 1 is open.
　図１および図２に示すように、ベース部１は、下方からの平面視において矩形状の筐体である。図２に示すように、ベース部１は、上方に向けて凹むベース凹部１ａを下面に有する。ベース凹部１ａは、下方からの平面視において矩形状である。表示部２は、閉じた状態において、ベース凹部１ａ内に収容される。表示部２は、直方体状であり、閉じた状態においてベース部１の下面と面一になる。 As shown in FIGS. 1 and 2, the base portion 1 is a rectangular housing in a plan view from below. As shown in FIG. 2, the base portion 1 has a base recess 1a recessed upward on the lower surface. The base recess 1a has a rectangular shape in a plan view from below. The display unit 2 is housed in the base recess 1a in a closed state. The display unit 2 has a rectangular parallelepiped shape and is flush with the lower surface of the base unit 1 in a closed state.
　ベース部１の前方側には、左右方向に延び、ヒンジ部３を構成するヒンジ軸３１（例えば図４参照）が配置される。表示部２は、ヒンジ軸３１を中心として回転可能に設けられる。表示部２は、図１に示す閉じた状態から、ヒンジ軸３１を中心として下方に向けて回転することにより、図２に示す開いた状態となる。表示部２は、開いた状態において、画像を表示する画面２ａを外部に露出する。画面２ａは、表示部２が開いた状態において、前方を向く車両の乗員と向かい合う面に配置される。表示部２が完全に開いた状態において、画面２ａは上下方向と平行となる。表示部２が閉じた状態において、画面２ａは、上方に向き、ベース部１内に隠れる。 On the front side of the base portion 1, a hinge shaft 31 (for example, see FIG. 4) extending in the left-right direction and constituting the hinge portion 3 is arranged. The display unit 2 is provided so as to be rotatable around the hinge shaft 31. The display unit 2 is brought into the open state shown in FIG. 2 by rotating downward from the closed state shown in FIG. 1 with the hinge shaft 31 as the center. The display unit 2 exposes the screen 2a for displaying an image to the outside in the open state. The screen 2a is arranged on a surface facing the occupant of the vehicle facing forward in a state where the display unit 2 is open. When the display unit 2 is completely open, the screen 2a is parallel to the vertical direction. When the display unit 2 is closed, the screen 2a faces upward and is hidden in the base unit 1.
　図３は、車載表示装置１００の電気的な構成を説明するためのブロック図である。図３に示すように、ベース部１は、電源部１１と、制御部１２と、映像処理部１３と、開閉モータ１４と、を備える。なお、開閉モータ１４は、表示部２をベース部１に対して回転するための駆動源となるモータである。車載表示装置１００は、開閉モータ１４と、開閉モータ１４の動力を表示部２に伝達する動力伝達機構（不図示）とを備えることにより、表示部２をベース部１に対して回転可能となっている。なお、動力伝達機構には、歯車等が含まれる。 FIG. 3 is a block diagram for explaining the electrical configuration of the vehicle-mounted display device 100. As shown in FIG. 3, the base unit 1 includes a power supply unit 11, a control unit 12, an image processing unit 13, and an opening / closing motor 14. The open / close motor 14 is a motor that serves as a drive source for rotating the display unit 2 with respect to the base unit 1. The in-vehicle display device 100 includes an opening / closing motor 14 and a power transmission mechanism (not shown) that transmits the power of the opening / closing motor 14 to the display unit 2, so that the display unit 2 can rotate with respect to the base unit 1. ing. The power transmission mechanism includes gears and the like.
　電源部１１は、車載表示装置１００が備える各種の電気部品に電力を供給する電源回路である。電源部１１は、例えば、ヘッドユニットから供給される電源電圧の変更を行う回路を含む。制御部１２は、車載表示装置１００の全体を制御するマイクロコントローラである。制御部１２は、例えば、ＣＰＵ（Central　Processing　Unit）およびメモリを含んで構成される。制御部１２は、表示部２における画像の表示を制御する。映像処理部１３は、集積回路により構成され、ヘッドユニットから入力される映像信号に対して各種の処理を行い、処理を行った映像信号を表示部２に出力する。 The power supply unit 11 is a power supply circuit that supplies electric power to various electric components included in the vehicle-mounted display device 100. The power supply unit 11 includes, for example, a circuit for changing the power supply voltage supplied from the head unit. The control unit 12 is a microcontroller that controls the entire in-vehicle display device 100. The control unit 12 includes, for example, a CPU (Central Processing Unit) and a memory. The control unit 12 controls the display of the image on the display unit 2. The video processing unit 13 is configured by an integrated circuit, performs various processing on the video signal input from the head unit, and outputs the processed video signal to the display unit 2.
　表示部２は、上述のように表示パネル２１を備える。表示パネル２１は、制御部１２の制御のもと、映像処理部１３から送信される映像信号にしたがって映像（画像）の表示を行う。 The display unit 2 includes a display panel 21 as described above. The display panel 21 displays a video (image) according to a video signal transmitted from the video processing unit 13 under the control of the control unit 12.
　電源部１１、制御部１２、および、映像処理部１３は、ベース部１に設けられる基板上に配置される。当該基板から、表示部２（表示パネル２１）に、例えば、電力、制御信号、および、映像信号が送られる。本実施形態では、電力については、ディスクリート線等のケーブルを用いて基板から表示部２に供給される。制御信号および映像信号については、ケーブルを用いない非接触通信を利用して、基板から表示部２に送信される。以下、非接触通信を可能とする通信接続構造について説明する。なお、表示部２が音声を出力するスピーカを有する場合には、音声信号およびスピーカを制御する信号も、ベース部１の基板から表示部２に送信されてよい。 The power supply unit 11, the control unit 12, and the video processing unit 13 are arranged on a substrate provided in the base unit 1. For example, electric power, control signals, and video signals are transmitted from the substrate to the display unit 2 (display panel 21). In the present embodiment, electric power is supplied from the substrate to the display unit 2 by using a cable such as a discrete wire. The control signal and the video signal are transmitted from the substrate to the display unit 2 by using non-contact communication without using a cable. Hereinafter, a communication connection structure that enables non-contact communication will be described. When the display unit 2 has a speaker that outputs sound, the sound signal and the signal for controlling the speaker may also be transmitted from the substrate of the base unit 1 to the display unit 2.
＜２．通信接続構造＞
　図４は、車載表示装置１００の構成を模式的に示す図である。図４は、車載表示装置１００を右方から見た側面図で、ベース部１の右側面が透明であると仮定して描いた模式図である。また、図４は、表示部２が閉じた状態である場合を示す。なお、図４においては、表示部２に含まれる表示パネル２１も、右側方からは本来見えないので、破線で示している。図５は、図４のＡ－Ａ位置における概略断面図である。なお、図５には、切断面より上方にある一部の部品について、位置関係の理解を容易とするために破線で示している。 <2. Communication connection structure>
FIG. 4 is a diagram schematically showing the configuration of the vehicle-mounted display device 100. FIG. 4 is a side view of the vehicle-mounted display device 100 as viewed from the right, and is a schematic view drawn on the assumption that the right side surface of the base portion 1 is transparent. Further, FIG. 4 shows a case where the display unit 2 is in a closed state. In FIG. 4, the display panel 21 included in the display unit 2 is also shown by a broken line because it cannot be seen from the right side. FIG. 5 is a schematic cross-sectional view taken along the line AA of FIG. In addition, in FIG. 5, some parts above the cut surface are shown by broken lines in order to facilitate understanding of the positional relationship.
　図４に示すように、車載表示装置１００は、第１基板１０と、第２基板２０と、移動機構４と、を備える。 As shown in FIG. 4, the vehicle-mounted display device 100 includes a first substrate 10, a second substrate 20, and a moving mechanism 4.
　第１基板１０は、ベース部１に設けられる。第１基板１０は、回路基板である。詳細には、第１基板１０は、ベース部１の内部に配置される。第１基板１０は、ベース部１に固定される。すなわち、第１基板１０は、ベース部１の内部で動くことはない。第１基板１０のベース部１に対する固定手法は、例えば螺子止めや接着等であってよい。 The first substrate 10 is provided on the base portion 1. The first substrate 10 is a circuit board. Specifically, the first substrate 10 is arranged inside the base portion 1. The first substrate 10 is fixed to the base portion 1. That is, the first substrate 10 does not move inside the base portion 1. The fixing method of the first substrate 10 to the base portion 1 may be, for example, screwing or bonding.
　詳細には、第１基板１０は、上下方向と直交する方向（水平方向）に広がる。第１基板１０の上下方向と直交する面に、図４においては図示を省略するが、上述した電源部１１、制御部１２、および、映像処理部１３が配置される。また、第１基板１０は、第１伝送線路５１を有する。本実施形態では、第１伝送線路５１は、好ましい形態として、第１基板１０の下面に形成される。第１伝送線路５１の詳細については後述する。 Specifically, the first substrate 10 spreads in a direction (horizontal direction) orthogonal to the vertical direction. Although not shown in FIG. 4, the power supply unit 11, the control unit 12, and the image processing unit 13 described above are arranged on a surface orthogonal to the vertical direction of the first substrate 10, although not shown in FIG. Further, the first substrate 10 has a first transmission line 51. In the present embodiment, the first transmission line 51 is preferably formed on the lower surface of the first substrate 10. The details of the first transmission line 51 will be described later.
　第２基板２０は、表示部２に設けられる。第２基板２０は、回路基板である。図４に示すように、表示部２が閉じた状態において、第２基板２０は、前後方向と直交する方向に広がる。なお、表示部２が有する表示パネル２１は、表示部２が閉じた状態において、上下方向と直交する方向に広がる。すなわち、表示部２が閉じた状態において、第２基板２０が広がる方向と、表示パネル２１が広がる方向とは直交する。第２基板２０は、表示パネル２１に直接固定されてもよいが、他の部材を介して表示パネル２１に固定されてもよい。第２基板２０は、表示パネル２１と電気的に接続される。表示部２が閉じた状態において、第２基板２０は、表示部２の前方に配置され、上方に延びる。なお、表示パネル２１と第１基板１０とは上下方向に対向する位置関係となっている。 The second substrate 20 is provided on the display unit 2. The second substrate 20 is a circuit board. As shown in FIG. 4, in a state where the display unit 2 is closed, the second substrate 20 expands in a direction orthogonal to the front-rear direction. The display panel 21 included in the display unit 2 expands in a direction orthogonal to the vertical direction when the display unit 2 is closed. That is, in the state where the display unit 2 is closed, the direction in which the second substrate 20 expands and the direction in which the display panel 21 expands are orthogonal to each other. The second substrate 20 may be directly fixed to the display panel 21, but may be fixed to the display panel 21 via another member. The second substrate 20 is electrically connected to the display panel 21. In the state where the display unit 2 is closed, the second substrate 20 is arranged in front of the display unit 2 and extends upward. The display panel 21 and the first substrate 10 have a positional relationship facing each other in the vertical direction.
　第２基板２０は、第２伝送線路５２を有する。第２伝送線路５２は、第１伝送線路５１と対になって伝送線路結合器５を形成する。本実施形態では、第２伝送線路５２は、表示部２が閉じた状態において、第２基板２０の前面に配置される。伝送線路結合器（ＴＬＣ；Transmission　Line　Coupler）は、互いに近接配置された伝送線路間の容量結合および誘導結合により、無線でデータの通信を行うことを可能とする非接触コネクタである。伝送線路結合器は、公知の技術であり、本実施形態において、第１伝送線路５１および第２伝送線路５２は公知の構成であってよい。 The second substrate 20 has a second transmission line 52. The second transmission line 52 is paired with the first transmission line 51 to form a transmission line coupler 5. In the present embodiment, the second transmission line 52 is arranged on the front surface of the second substrate 20 in a state where the display unit 2 is closed. A transmission line coupler (TLC) is a non-contact connector that enables wireless data communication by capacitive coupling and inductive coupling between transmission lines arranged in close proximity to each other. The transmission line coupler is a known technique, and in the present embodiment, the first transmission line 51 and the second transmission line 52 may have a known configuration.
　本実施形態では、伝送線路結合器５は、第１基板１０と第２基板２０とが特定の状態になった場合に、その機能を発揮して第１基板１０と第２基板２０との間のデータ通信を可能とする。特定の状態については後述する。本実施形態では、非接触通信に伝送線路結合器を利用する構成であるために、例えば、非接触通信の信頼性を向上することができる。なお、表示部２が閉じた状態において、第１伝送線路５１と第２伝送線路５２とは、互いに直交する関係で離れており、伝送線路結合器５を形成していない。すなわち、表示部２が閉じた状態においては、第１基板１０と第２基板２０との間で非接触通信を行うことができない。表示部２が閉じた状態は、上述の特定の状態に該当しない。 In the present embodiment, the transmission line coupler 5 exerts its function when the first substrate 10 and the second substrate 20 are in a specific state, and is between the first substrate 10 and the second substrate 20. Enables data communication. The specific state will be described later. In the present embodiment, since the transmission line coupler is used for the non-contact communication, for example, the reliability of the non-contact communication can be improved. In the state where the display unit 2 is closed, the first transmission line 51 and the second transmission line 52 are separated from each other in an orthogonal relationship with each other, and the transmission line coupler 5 is not formed. That is, when the display unit 2 is closed, non-contact communication cannot be performed between the first substrate 10 and the second substrate 20. The state in which the display unit 2 is closed does not correspond to the above-mentioned specific state.
　上述のように、表示部２は、ヒンジ部３を利用して開いた状態となる。ここで、ヒンジ部３の構成について詳細に説明しておく。図５に示すように、ヒンジ部３は、ヒンジ軸３１と、軸受け３２とで構成される。ヒンジ軸３１は、左右方向に延びる円柱状或いは円筒状である。本実施形態では、ヒンジ軸３１は、表示部２に固定される。すなわち、ヒンジ軸３１は、表示部２と一体である。詳細には、ヒンジ軸３１は、表示部２の前方の端部に固定される。 As described above, the display unit 2 is in an open state using the hinge unit 3. Here, the configuration of the hinge portion 3 will be described in detail. As shown in FIG. 5, the hinge portion 3 is composed of a hinge shaft 31 and a bearing 32. The hinge shaft 31 has a columnar or cylindrical shape extending in the left-right direction. In this embodiment, the hinge shaft 31 is fixed to the display unit 2. That is, the hinge shaft 31 is integrated with the display unit 2. Specifically, the hinge shaft 31 is fixed to the front end of the display unit 2.
　軸受け３２は、図５に示すように、ベース部１に設けられる。詳細には、ベース部１は、内部に枠状の支持部１ｂを有する。軸受け３２は、支持部１ｂの上面から下方に向けて凹む一対の凹部により構成される。一対の凹部は、左右対称に配置される。一対の凹部のうち、左側の凹部は右端が開口し、右側の凹部は左端が開口する。ヒンジ軸３１の左右の端部を、一対の凹部にそれぞれに上方から嵌めることにより、ヒンジ軸３１が軸受け３２により回転可能に支持されることになる。 The bearing 32 is provided on the base portion 1 as shown in FIG. Specifically, the base portion 1 has a frame-shaped support portion 1b inside. The bearing 32 is composed of a pair of recesses that are recessed downward from the upper surface of the support portion 1b. The pair of recesses are arranged symmetrically. Of the pair of recesses, the recess on the left side opens at the right end, and the recess on the right side opens at the left end. By fitting the left and right ends of the hinge shaft 31 into a pair of recesses from above, the hinge shaft 31 is rotatably supported by the bearing 32.
　なお、本実施形態では、軸受け３２がベース部１に設けられる構成としたが、軸受けが表示部２に設けられる構成としてもよい。この場合、例えば、、軸受けは、左右方向に延びる円筒状で、表示部２の前端部に設けられる構成としてよい。ヒンジ軸は、円筒状の軸受けに通される。ヒンジ軸は、ベース部１に対して回転不能に配置され、軸受けを有する表示部２がヒンジ軸を中心として回転することになる。ただし、当該変形例の構成の場合と、本実施形態の構成の場合とのいずれの場合においても、ヒンジ軸は、ベース部１に対して上下方向に移動可能にベース部１に支持される。この点の詳細は後述する。 Although the bearing 32 is provided in the base portion 1 in the present embodiment, the bearing may be provided in the display portion 2. In this case, for example, the bearing may have a cylindrical shape extending in the left-right direction and may be provided at the front end portion of the display unit 2. The hinge shaft is passed through a cylindrical bearing. The hinge shaft is arranged so as not to rotate with respect to the base portion 1, and the display portion 2 having a bearing rotates about the hinge shaft. However, in both the case of the configuration of the modification and the case of the configuration of the present embodiment, the hinge shaft is supported by the base portion 1 so as to be movable in the vertical direction with respect to the base portion 1. Details of this point will be described later.
　移動機構４は、表示部２が開かれた場合に、第１基板１０と第２基板２０とを接近させて非接触通信を可能とする。これによれば、ベース部１に対して表示部２が開閉可能に設けられる車載表示装置１００において、細線同軸ケーブルやディスクリート線等の電気ケーブルを用いることなく、ベース部１と表示部２との間でデータの通信を行うことを可能にできる。このために、表示部２の開閉に伴って信号線が断線するという事態の発生を避けることができ、車載表示装置１００の耐久性を向上することができる。また、非接触通信を利用できるために、データ通信用のケーブルを引き回す構成の場合に懸念された信号波形品質の低下やＥＭＣ性能の不足を避けて、通信品質やＥＭＣ性能を向上することができる。また、データ通信用のケーブルをベース部１から表示部２へと引き回さなくてもよいために、従来のように、多数の通信用のケーブルをヒンジ部の内部に通す必要がなく、ヒンジ部のサイズが大きくなることを避けることができる。 The moving mechanism 4 enables non-contact communication by bringing the first board 10 and the second board 20 close to each other when the display unit 2 is opened. According to this, in the vehicle-mounted display device 100 in which the display unit 2 can be opened and closed with respect to the base unit 1, the base unit 1 and the display unit 2 can be connected to each other without using an electric cable such as a thin coaxial cable or a discrete wire. It is possible to communicate data between them. Therefore, it is possible to avoid the occurrence of a situation in which the signal line is disconnected due to the opening and closing of the display unit 2, and it is possible to improve the durability of the in-vehicle display device 100. In addition, since non-contact communication can be used, it is possible to improve communication quality and EMC performance by avoiding deterioration of signal waveform quality and lack of EMC performance, which are concerns in the case of a configuration in which a cable for data communication is routed. .. Further, since it is not necessary to route the cable for data communication from the base portion 1 to the display portion 2, it is not necessary to pass a large number of communication cables through the inside of the hinge portion as in the conventional case, and the hinge is used. It is possible to avoid increasing the size of the part.
　本実施形態では、移動機構４は、第２基板２０を移動可能に設けられる。移動機構４は、第２基板２０を第１基板１０に接近させる。移動機構は、第１基板１０と第２基板２０とを接近させることができればよいので、第１基板１０を第２基板２０に接近させる構成であってもよい。ただし、本実施形態のように、移動機構４が第２基板２０を移動する構成とすることにより、可動部の増加を抑制でき、車載表示装置１００の構造が複雑になることを避けられる。 In the present embodiment, the moving mechanism 4 is provided so that the second substrate 20 can be moved. The moving mechanism 4 brings the second substrate 20 closer to the first substrate 10. Since the moving mechanism only needs to be able to bring the first substrate 10 and the second substrate 20 close to each other, the moving mechanism may be configured to bring the first substrate 10 close to the second substrate 20. However, by configuring the moving mechanism 4 to move the second substrate 20 as in the present embodiment, it is possible to suppress an increase in the number of movable portions, and it is possible to avoid complicating the structure of the in-vehicle display device 100.
　詳細には、移動機構４は、表示部２をスライドさせて、第２基板２０を第１基板１０に接近させる。このように構成することにより、第２基板２０を表示部２に対して分離可能とする必要がなく、構造の複雑化を避けることができる。より詳細には、移動機構４は、第１磁石４１と、第２磁石４２と、棒状部材４３と、を備える。 Specifically, the moving mechanism 4 slides the display unit 2 to bring the second substrate 20 closer to the first substrate 10. With such a configuration, it is not necessary to make the second substrate 20 separable from the display unit 2, and it is possible to avoid complication of the structure. More specifically, the moving mechanism 4 includes a first magnet 41, a second magnet 42, and a rod-shaped member 43.
　第１磁石４１は、ベース部１に設けられる。詳細には、第１磁石４１は、第１基板１０から離れてベース部１に配置される。すなわち、第１磁石４１は、ベース部１を構成する、第１基板１０以外の部材に配置される。第１磁石４１は、第１基板１０に配置されてもよい。ただし、本実施形態のように第１基板１０から離れて第１磁石４１を配置することにより、第１基板１０に配置される電子部品が磁力による影響を受け難くすることができる。 The first magnet 41 is provided on the base portion 1. Specifically, the first magnet 41 is arranged on the base portion 1 away from the first substrate 10. That is, the first magnet 41 is arranged on a member other than the first substrate 10 that constitutes the base portion 1. The first magnet 41 may be arranged on the first substrate 10. However, by arranging the first magnet 41 away from the first substrate 10 as in the present embodiment, the electronic components arranged on the first substrate 10 can be made less likely to be affected by the magnetic force.
　本実施形態においては、第１磁石４１の数は２つである。２つの第１磁石４１は、第１基板１０を左右方向に挟んで配置される。２つの第１磁石４１は、第１基板１０を挟んで左右対称に配置される。ただし、第１磁石４１の数や配置は適宜変更されてよい。第１磁石４１は、単数や、３つ以上の複数であってもよい。 In this embodiment, the number of the first magnets 41 is two. The two first magnets 41 are arranged so as to sandwich the first substrate 10 in the left-right direction. The two first magnets 41 are arranged symmetrically with the first substrate 10 interposed therebetween. However, the number and arrangement of the first magnets 41 may be changed as appropriate. The first magnet 41 may be singular or may be three or more.
　第２磁石４２は、表示部２に設けられる。第２磁石４２は、第１磁石４１と対になって第１基板１０と第２基板２０とを接近させる力を発生させる。第２磁石４２は、第１磁石４１と対になって使用されるために、本実施形態では、第２磁石４２の数は、第１磁石４１と同じ２つである。また、第２磁石４２は、第１磁石４１と対になって第１基板１０と第２基板２０とを接近させることができる位置に配置される。 The second magnet 42 is provided on the display unit 2. The second magnet 42 is paired with the first magnet 41 to generate a force that brings the first substrate 10 and the second substrate 20 closer to each other. Since the second magnet 42 is used in pairs with the first magnet 41, in the present embodiment, the number of the second magnets 42 is the same as that of the first magnet 41. Further, the second magnet 42 is arranged at a position where the first substrate 10 and the second substrate 20 can be brought close to each other in pairs with the first magnet 41.
　詳細には、第２磁石４２は、第２基板２０に配置される。このように構成することにより、表示部２の回転動作に連動して、第１磁石４１と第２磁石４２との吸引力により２つの基板１０、２０を接近させる構成を簡単な構造で形成することができる。ただし、第２磁石４２は、表示部２の、第２基板２０以外の部分に配置してもよい。 Specifically, the second magnet 42 is arranged on the second substrate 20. With this configuration, a configuration in which the two substrates 10 and 20 are brought close to each other by the attractive force of the first magnet 41 and the second magnet 42 is formed with a simple structure in conjunction with the rotational operation of the display unit 2. be able to. However, the second magnet 42 may be arranged in a portion of the display unit 2 other than the second substrate 20.
　第１磁石４１と第２磁石４２とのうち、少なくとも一方は、電磁石であることが好ましい。このように構成することにより、表示部２を閉じる動作を簡単に行うことができる。また、好ましい形態として、第１磁石４１が電磁石であり、第２磁石４２は永久磁石である構成としてもよい。これにより、可動体である表示部２の重量が増すことを抑制することができる。 It is preferable that at least one of the first magnet 41 and the second magnet 42 is an electromagnet. With this configuration, the operation of closing the display unit 2 can be easily performed. Further, as a preferred embodiment, the first magnet 41 may be an electromagnet and the second magnet 42 may be a permanent magnet. As a result, it is possible to prevent the weight of the display unit 2, which is a movable body, from increasing.
　棒状部材４３は、ベース部１に固定される。棒状部材４３は、表示部２をスライドさせる。本実施形態のように、磁石と棒状部材とを用いて表示部２を移動させる構成とすると、第１基板１０と第２基板２０とを接近させることができる移動機構の複雑化を抑制することができる。 The rod-shaped member 43 is fixed to the base portion 1. The rod-shaped member 43 slides the display unit 2. When the display unit 2 is moved by using a magnet and a rod-shaped member as in the present embodiment, it is possible to suppress the complexity of the moving mechanism capable of bringing the first substrate 10 and the second substrate 20 close to each other. Can be done.
　詳細には、棒状部材４３は、上下方向に延びる。すなわち、表示部２は、棒状部材４３に沿って上下方向にスライド可能に設けられる。棒状部材４３は、例えば円柱状又は円筒状である。本実施形態では、棒状部材４３は、軸受け３２を構成する一対の凹部のそれぞれの上方に配置される。すなわち、移動機構４は、左右対称に配置される一対の棒状部材４３を備える。ただし、棒状部材の数や配置は、適宜変更されてよい。 Specifically, the rod-shaped member 43 extends in the vertical direction. That is, the display unit 2 is provided so as to be slidable in the vertical direction along the rod-shaped member 43. The rod-shaped member 43 is, for example, cylindrical or cylindrical. In the present embodiment, the rod-shaped member 43 is arranged above each of the pair of recesses constituting the bearing 32. That is, the moving mechanism 4 includes a pair of rod-shaped members 43 arranged symmetrically. However, the number and arrangement of the rod-shaped members may be changed as appropriate.
　図６は、棒状部材４３とヒンジ軸３１との関係を示す概略断面図である。図６は、表示部２が閉じた状態を想定した図である。図６に示すように、棒状部材４３は、詳細には、軸受け３２に配置されるヒンジ軸３１の上に配置される。棒状部材４３の下端と、軸受け３２に配置されるヒンジ軸３１の上端とは、接触しても、僅かな隙間をあけて配置されてもよい。棒状部材４３とヒンジ軸３１とが接触する場合には、棒状部材４３の下端は、ヒンジ軸３１の側面に沿った凹面、或いは、凸面であることが好ましい。 FIG. 6 is a schematic cross-sectional view showing the relationship between the rod-shaped member 43 and the hinge shaft 31. FIG. 6 is a diagram assuming a state in which the display unit 2 is closed. As shown in FIG. 6, the rod-shaped member 43 is specifically arranged on the hinge shaft 31 arranged on the bearing 32. The lower end of the rod-shaped member 43 and the upper end of the hinge shaft 31 arranged on the bearing 32 may be in contact with each other or may be arranged with a slight gap. When the rod-shaped member 43 and the hinge shaft 31 come into contact with each other, the lower end of the rod-shaped member 43 is preferably a concave surface or a convex surface along the side surface of the hinge shaft 31.
　ヒンジ軸３１には、貫通孔３１ａが設けられる。貫通孔３１ａは、棒状部材４３の数に合わせて２つ設けられる。表示部２が閉じた状態において、貫通孔３１ａは、前後方向に貫通する。表示部２が閉じた状態から開いた状態へと変わる際には、ヒンジ軸３１が回転する。表示部２が完全に開いた状態となると、貫通孔３１ａは上下方向に貫通する。すなわち、表示部２が完全に開いた状態となると、上下に延びる棒状部材４３が貫通孔３１ａを挿通可能となる。表示部２が完全に開いた状態において、貫通孔３１ａは、上下方向から平面視して、棒状部材４３と重なるとともに、棒状部材４３よりも面積が大きい。この貫通孔３１ａと棒状部材４３との関係により、表示部２が完全に開いた状態となると、磁石４１、４２の吸引力により、表示部２は棒状部材４３に沿って上方にスライドする。 The hinge shaft 31 is provided with a through hole 31a. Two through holes 31a are provided according to the number of rod-shaped members 43. When the display unit 2 is closed, the through hole 31a penetrates in the front-rear direction. When the display unit 2 changes from the closed state to the open state, the hinge shaft 31 rotates. When the display unit 2 is completely opened, the through hole 31a penetrates in the vertical direction. That is, when the display unit 2 is completely opened, the rod-shaped member 43 extending vertically can insert the through hole 31a. In the state where the display unit 2 is completely opened, the through hole 31a overlaps with the rod-shaped member 43 and has a larger area than the rod-shaped member 43 when viewed in a plan view from the vertical direction. When the display unit 2 is completely opened due to the relationship between the through hole 31a and the rod-shaped member 43, the display unit 2 slides upward along the rod-shaped member 43 due to the attractive force of the magnets 41 and 42.
　なお、軸受けが表示部２に設けられる構成（上述した変形例のヒンジ部）の場合には、例えば、左右一対の棒状部材４３がヒンジ軸を上下方向に貫き、ヒンジ軸がベース部１に回転不能に支持される構成としてよい。この場合でも、ヒンジ軸が棒状部材４３に沿って上下方向にスライド可能な構成とできる。すなわち、第１基板１０と第２基板２０とを接近させることができる。なお、この構成の場合には、表示部２は、開き動作（回転動作）をしながら、磁石４１、４２の吸引力によって上方にスライドすることになる。 In the case of the configuration in which the bearing is provided in the display unit 2 (the hinge portion of the above-mentioned modification), for example, a pair of left and right rod-shaped members 43 penetrate the hinge shaft in the vertical direction, and the hinge shaft rotates to the base portion 1. It may be a configuration that is unsupported. Even in this case, the hinge shaft can be configured to be slidable in the vertical direction along the rod-shaped member 43. That is, the first substrate 10 and the second substrate 20 can be brought close to each other. In the case of this configuration, the display unit 2 slides upward due to the attractive force of the magnets 41 and 42 while performing the opening operation (rotational operation).
＜３．通信接続動作＞
　以下、車載表示装置１００における基板間の通信接続動作について説明する。図７は、車載表示装置１００における基板間の通信接続動作の流れを示すフローチャートである。なお、図７のフローの開始前は、表示部２は閉じた状態であり、第１基板１０と第２基板２０との間で非接触通信を行うことはできない。 <3. Communication connection operation>
Hereinafter, the communication connection operation between the substrates in the vehicle-mounted display device 100 will be described. FIG. 7 is a flowchart showing a flow of communication connection operation between boards in the vehicle-mounted display device 100. Before the start of the flow of FIG. 7, the display unit 2 is in a closed state, and non-contact communication cannot be performed between the first substrate 10 and the second substrate 20.
　例えば、車載表示装置１００の使用指令がヘッドユニットに入力されると、車載表示装置１００は、表示部２を開くための回転を開始する（ステップＳ１）。この回転は、開閉モータ１４を駆動源として行われる。図４に示す状態から、表示部２は、ヒンジ軸３１を中心として下方に向けて回転を開始する。 For example, when a command to use the vehicle-mounted display device 100 is input to the head unit, the vehicle-mounted display device 100 starts rotation for opening the display unit 2 (step S1). This rotation is performed by using the open / close motor 14 as a drive source. From the state shown in FIG. 4, the display unit 2 starts rotating downward with the hinge shaft 31 as the center.
　図８は、表示部２の開く動作の途中段階を示す模式図である。図８に示すように、表示部２が開くために回転を開始すると、第１磁石４１と第２磁石４２との互いに異なる磁極が接近し、両者が引き合うようになる。ただし、表示部２が完全に開く前の段階では、棒状部材４３がヒンジ軸３１に接触するために、ヒンジ軸３１は上方に移動できない。 FIG. 8 is a schematic diagram showing an intermediate stage of the opening operation of the display unit 2. As shown in FIG. 8, when the display unit 2 starts to rotate to open, the magnetic poles of the first magnet 41 and the second magnet 42 approach each other and attract each other. However, before the display unit 2 is completely opened, the hinge shaft 31 cannot move upward because the rod-shaped member 43 comes into contact with the hinge shaft 31.
　図９は、表示部２が完全に開いた状態を示す模式図である。図９に示すように、表示部２が完全に開くと、貫通孔３１ａに棒状部材４３が挿通可能となる。更に、第１磁石４１のＮ極と、第２磁石４２のＳ極とが上下方向に対向し、互いに引き合う状態となっている。このために、表示部２が棒状部材４３に沿って上方に向けてスライドを開始する。すなわち、第１基板１０と第２基板２０との接近が開始される（ステップＳ２）。なお、第１磁石４１および第２磁石４２の磁極の向きは、本実施形態の構成と反対であっても勿論よい。 FIG. 9 is a schematic diagram showing a state in which the display unit 2 is completely open. As shown in FIG. 9, when the display unit 2 is completely opened, the rod-shaped member 43 can be inserted into the through hole 31a. Further, the N pole of the first magnet 41 and the S pole of the second magnet 42 face each other in the vertical direction and are in a state of attracting each other. For this purpose, the display unit 2 starts sliding upward along the rod-shaped member 43. That is, the approach between the first substrate 10 and the second substrate 20 is started (step S2). Of course, the directions of the magnetic poles of the first magnet 41 and the second magnet 42 may be opposite to those of the configuration of the present embodiment.
　表示部２の上昇により、互いに平行に配置される状態となった第１基板１０と第２基板２０とが接近する。第１基板１０と第２基板２０との上下方向間の距離が所定の距離となると、表示部２の上昇が止まる。図１０は、この状態を示す。所定の距離は、第１伝送線路５１と第２伝送線路５２とが伝送線路結合器５を構成し、基板間の非接触通信が可能となる距離である。当該距離となった段階で、表示部２の上昇が止まるストッパーをベース部１に設けることが好ましい。ただし、第１磁石４１と第２磁石４２との接触により、表示部２の上昇が止まる構成としてもよい。 As the display unit 2 rises, the first substrate 10 and the second substrate 20 that are arranged in parallel with each other come close to each other. When the distance between the first substrate 10 and the second substrate 20 in the vertical direction reaches a predetermined distance, the display unit 2 stops rising. FIG. 10 shows this state. The predetermined distance is a distance at which the first transmission line 51 and the second transmission line 52 form the transmission line coupler 5 and enable non-contact communication between the substrates. It is preferable that the base portion 1 is provided with a stopper that stops the rise of the display portion 2 at the stage where the distance is reached. However, the display unit 2 may be configured to stop rising due to contact between the first magnet 41 and the second magnet 42.
　本実施形態では、好ましい形態として、制御部１２が、非接触通信が可能となったか否かを監視する（ステップＳ３）。非接触通信が可能となったか否かは、公知のハンドシェイク通信の技術を利用して判定すればよい。例えば、非接触通信が可能となると、第２基板２０は、第１基板１０から出力されるＨｉｇｈ信号を検出し、当該検出により第１基板１０に出力する信号をＨｉｇｈからＬｏｗへと切り替える。当該信号の切り替わりを検出することにより、制御部１２は、非接触通信が可能となったと判定する。 In the present embodiment, as a preferred embodiment, the control unit 12 monitors whether or not non-contact communication is possible (step S3). Whether or not non-contact communication is possible may be determined by using a known handshake communication technique. For example, when non-contact communication becomes possible, the second substrate 20 detects a High signal output from the first substrate 10, and switches the signal output to the first substrate 10 from High to Low by the detection. By detecting the switching of the signal, the control unit 12 determines that non-contact communication is possible.
　非接触通信が可能となったと判定した場合（ステップＳ３でＹｅｓ）、制御部１２は、表示部２による画像の表示を許可する。これにより、表示部２における画像表示が開始される（ステップＳ４）。すなわち、本実施形態では、車載表示装置１００は、ベース部１に配置される制御部１２を備える。制御部１２は、非接触通信が可能となったと判定した場合に、表示部２における画像の表示を開始させる。このような構成とすることにより、ベース部１から表示部２に適切に映像信号が送信されていない状態で画像の表示を開始するといった事態を避けることができ、ユーザに適切な画像を見せることができる。 When it is determined that non-contact communication is possible (Yes in step S3), the control unit 12 permits the display unit 2 to display the image. As a result, the image display on the display unit 2 is started (step S4). That is, in the present embodiment, the vehicle-mounted display device 100 includes a control unit 12 arranged in the base unit 1. The control unit 12 starts displaying an image on the display unit 2 when it is determined that non-contact communication is possible. With such a configuration, it is possible to avoid a situation in which the image display is started in a state where the video signal is not properly transmitted from the base unit 1 to the display unit 2, and the user can be shown an appropriate image. Can be done.
　なお、表示部２が閉じられる際には、例えば、電磁石として構成される第１磁石４１がオフされる。これにより、表示部２が下降して、ヒンジ軸３１が軸受け３２に嵌り、回転可能な状態になる。この状態で、表示部２がヒンジ軸３１を中心として上方に回転することで、表示部２は閉じた状態となる。 When the display unit 2 is closed, for example, the first magnet 41 configured as an electromagnet is turned off. As a result, the display unit 2 is lowered, the hinge shaft 31 is fitted into the bearing 32, and the hinge shaft 31 is in a rotatable state. In this state, the display unit 2 rotates upward around the hinge shaft 31, so that the display unit 2 is closed.
　また、図７に示す例では、非接触通信が可能となったと判定されるまで、いつまでも表示部２における画像の表示が開始されない。この構成に替えて、例えば表示部２が開き出してから一定期間を経過しても画像の表示が開始されない場合に、エラーを報知する構成としてよい。エラーの報知は、エラー音を鳴らす構成であったり、ヘッドユニットの画面を利用したエラーメッセージの表示であったりしてよい。また、エラーを報知する替わりに、表示部２の開閉動作をやり直す構成としてもよい。 Further, in the example shown in FIG. 7, the display of the image on the display unit 2 is not started indefinitely until it is determined that the non-contact communication is possible. Instead of this configuration, for example, when the display of the image is not started even after a certain period of time has passed since the display unit 2 was opened, an error may be notified. The error notification may be configured to sound an error sound, or may be an error message display using the screen of the head unit. Further, instead of notifying the error, the opening / closing operation of the display unit 2 may be redone.
＜４．まとめ＞
　以上のように、本発明の例示的な車載表示装置１００は、車両に搭載される表示装置であって、車両の所定箇所に設置されるベース部１と、ベース部１に開閉可能に支持される表示部２と、ベース部１に設けられる第１基板１０と、表示部２に設けられる第２基板２０と、表示部２が開かれた場合に、第１基板１０と第２基板２０とを接近させて非接触通信を可能とする移動機構４と、を備える構成になっている。 <4. Summary>
As described above, the exemplary vehicle-mounted display device 100 of the present invention is a display device mounted on a vehicle, and is supported by a base portion 1 installed at a predetermined position of the vehicle and a base portion 1 so as to be openable and closable. The display unit 2, the first substrate 10 provided on the base unit 1, the second substrate 20 provided on the display unit 2, and the first substrate 10 and the second substrate 20 when the display unit 2 is opened. It is configured to include a mobile mechanism 4 that enables non-contact communication by bringing the vehicle closer to each other.
　上記構成の車載表示装置１００において、第１基板１０は、第１伝送線路５１を有し、第２基板２０は、第１伝送線路５１と対になって伝送線路結合器５を形成する第２伝送線路５２を有する構成であることが好ましい。 In the vehicle-mounted display device 100 having the above configuration, the first substrate 10 has a first transmission line 51, and the second substrate 20 is paired with the first transmission line 51 to form a transmission line coupler 5. It is preferable that the configuration has a transmission line 52.
　上記構成の車載表示装置１００において、第１基板１０は、ベース部１に固定され、移動機構４は、第２基板２０を第１基板１０に接近させる構成であることが好ましい。 In the vehicle-mounted display device 100 having the above configuration, it is preferable that the first substrate 10 is fixed to the base portion 1 and the moving mechanism 4 has a configuration in which the second substrate 20 is brought close to the first substrate 10.
　上記構成の車載表示装置１００において、移動機構４は、表示部２をスライドさせて、第２基板２０を第１基板１０に接近させる構成であることが好ましい。 In the vehicle-mounted display device 100 having the above configuration, it is preferable that the moving mechanism 4 has a configuration in which the display unit 2 is slid so that the second substrate 20 approaches the first substrate 10.
　上記構成の車載表示装置１００において、移動機構４は、ベース部１に設けられる第１磁石４１と、表示部２に設けられ、第１磁石４１と対になって第１基板１０と第２基板２０とを接近させる力を発生させる第２磁石４２と、ベース部１に固定され、表示部２をスライドさせる棒状部材４３と、を備える構成であることが好ましい。 In the vehicle-mounted display device 100 having the above configuration, the moving mechanism 4 is provided on the first magnet 41 provided on the base portion 1 and the display unit 2, and is paired with the first magnet 41 on the first substrate 10 and the second substrate. It is preferable to have a configuration including a second magnet 42 that generates a force that brings the 20 closer to the base portion 1, and a rod-shaped member 43 that is fixed to the base portion 1 and slides the display portion 2.
　上記構成の車載表示装置１００において、第１磁石４１は、第１基板１０から離れてベース部１に配置され、第２磁石４２は、第２基板２０に配置される構成であってよい。 In the vehicle-mounted display device 100 having the above configuration, the first magnet 41 may be arranged on the base portion 1 away from the first substrate 10, and the second magnet 42 may be arranged on the second substrate 20.
　上記構成の車載表示装置１００は、ベース部１に配置される制御部１２を更に備え、制御部１２は、非接触通信が可能となったと判定した場合に、表示部２における画像の表示を開始させる構成であってよい。 The vehicle-mounted display device 100 having the above configuration further includes a control unit 12 arranged in the base unit 1, and the control unit 12 starts displaying an image on the display unit 2 when it is determined that non-contact communication is possible. It may be a configuration to make it.
　また、本発明の例示的な通信接続方法は、ベース部１に対して表示部２が開閉可能に設けられる車載表示装置１００における基板間の通信接続方法であって、表示部２を開く回転動作に起因して、ベース部１が有する第１基板１０と、表示部２が有する第２基板２０とを自動的に接近させて非接触通信可能な距離とする構成となっている。 Further, the exemplary communication connection method of the present invention is a communication connection method between substrates in an in-vehicle display device 100 in which a display unit 2 is provided so as to be openable and closable with respect to a base unit 1, and is a rotational operation for opening the display unit 2. Therefore, the first substrate 10 of the base unit 1 and the second substrate 20 of the display unit 2 are automatically brought close to each other to achieve a non-contact communication distance.
　なお、以上の説明においては、第１基板１０と第２基板２０とを接近には、磁石４１、４２の吸引力が使用される構成とした。第１基板１０と第２基板２０との接近に、磁石の吸引力以外が利用されてもよい。例えば、モータの力を利用して第１基板１０と第２基板２０とを接近させる構成としてもよい。 In the above description, the attractive force of the magnets 41 and 42 is used to bring the first substrate 10 and the second substrate 20 close to each other. A force other than the attractive force of the magnet may be used to bring the first substrate 10 and the second substrate 20 close to each other. For example, the first substrate 10 and the second substrate 20 may be brought close to each other by using the power of the motor.
＜５．留意事項＞
　本明細書中に開示されている種々の技術的特徴は、上記実施形態および変形例のほか、その技術的創作の主旨を逸脱しない範囲で種々の変更を加えることが可能である。すなわち、上記実施形態および変形例は、全ての点で例示であって、制限的なものではないと考えられるべきであり、本発明の技術的範囲は、上記実施形態および変形例の説明ではなく、特許請求の範囲によって示されるものであり、特許請求の範囲と均等の意味及び範囲内に属する全ての変更が含まれると理解されるべきである。また、本明細書中に示される複数の実施形態及び変形例は可能な範囲で適宜組み合わせて実施されてよい。 <5. Points to note>
In addition to the above-described embodiments and modifications, the various technical features disclosed herein can be modified in various ways without departing from the spirit of the technical creation. That is, it should be considered that the embodiments and modifications are exemplary in all respects and are not restrictive, and the technical scope of the invention is not a description of the embodiments and modifications. , It is indicated by the scope of claims and should be understood to include all modifications belonging to the meaning and scope equivalent to the scope of claims. In addition, a plurality of embodiments and modifications shown in the present specification may be appropriately combined and implemented to the extent possible.
　　１・・・ベース部
　　２・・・表示部
　　４・・・移動機構
　　５・・・伝送線路結合器
　　１０・・・第１基板
　　１２・・・制御部
　　２０・・・第２基板
　　４１・・・第１磁石
　　４２・・・第２磁石
　　４３・・・棒状部材
　　５１・・・第１伝送線路
　　５２・・・第２伝送線路
　　１００・・・車載表示装置 1 ... Base part 2 ... Display part 4 ... Movement mechanism 5 ... Transmission line coupler 10 ... First board 12 ... Control unit 20 ... Second board 41 ... 1st magnet 42 ... 2nd magnet 43 ... Rod-shaped member 51 ... 1st transmission line 52 ... 2nd transmission line 100 ... In-vehicle display device

Claims (8)

  1. 　車両に搭載される表示装置であって、
    　前記車両の所定箇所に設置されるベース部と、
    　前記ベース部に開閉可能に支持される表示部と、
    　前記ベース部に設けられる第１基板と、
    　前記表示部に設けられる第２基板と、
    　前記表示部が開かれた場合に、前記第１基板と前記第２基板とを接近させて非接触通信を可能とする移動機構と、
    　を備える、車載表示装置。     A display device mounted on a vehicle
    The base part installed at the predetermined position of the vehicle and
    A display unit that can be opened and closed on the base unit,
    The first substrate provided on the base portion and
    A second substrate provided on the display unit and
    A moving mechanism that enables non-contact communication by bringing the first board and the second board close to each other when the display unit is opened.
    In-vehicle display device.
  2. 　前記第１基板は、第１伝送線路を有し、
    　前記第２基板は、前記第１伝送線路と対になって伝送線路結合器を形成する第２伝送線路を有する、請求項１に記載の車載表示装置。     The first substrate has a first transmission line and has a first transmission line.
    The vehicle-mounted display device according to claim 1, wherein the second substrate has a second transmission line that is paired with the first transmission line to form a transmission line coupler.
  3. 　前記第１基板は、前記ベース部に固定され、
    　前記移動機構は、前記第２基板を前記第１基板に接近させる、請求項１又は２に記載の車載表示装置。     The first substrate is fixed to the base portion and is fixed to the base portion.
    The vehicle-mounted display device according to claim 1 or 2, wherein the moving mechanism brings the second substrate closer to the first substrate.
  4. 　前記移動機構は、前記表示部をスライドさせて、前記第２基板を前記第１基板に接近させる、請求項３に記載の車載表示装置。 The vehicle-mounted display device according to claim 3, wherein the moving mechanism slides the display unit to bring the second substrate closer to the first substrate.
  5. 　前記移動機構は、
    　　前記ベース部に設けられる第１磁石と、
    　　前記表示部に設けられ、前記第１磁石と対になって前記第１基板と前記第２基板とを接近させる力を発生させる第２磁石と、
    　　前記ベース部に固定され、前記表示部をスライドさせる棒状部材と、
    　を備える、請求項４に記載の車載表示装置。     The moving mechanism is
    The first magnet provided on the base and
    A second magnet provided on the display unit, which is paired with the first magnet and generates a force to bring the first substrate and the second substrate close to each other.
    A rod-shaped member fixed to the base portion and sliding the display portion,
    The vehicle-mounted display device according to claim 4.
  6. 　前記第１磁石は、前記第１基板から離れて前記ベース部に配置され、
    　前記第２磁石は、前記第２基板に配置される、請求項５に記載の車載表示装置。     The first magnet is arranged on the base portion away from the first substrate.
    The vehicle-mounted display device according to claim 5, wherein the second magnet is arranged on the second substrate.
  7. 　前記ベース部に配置される制御部を更に備え、
    　前記制御部は、前記非接触通信が可能となったと判定した場合に、前記表示部における画像の表示を開始させる、請求項１から６のいずれか１項に記載の車載表示装置。     Further provided with a control unit arranged on the base unit,
    The vehicle-mounted display device according to any one of claims 1 to 6, wherein the control unit starts displaying an image on the display unit when it is determined that the non-contact communication is possible.
  8. 　ベース部に対して表示部が開閉可能に設けられる車載表示装置における基板間の通信接続方法であって、
    　前記表示部を開く回転動作に起因して、前記ベース部が有する第１基板と、前記表示部が有する第２基板とを自動的に接近させて非接触通信可能な距離とする、通信接続方法。     It is a communication connection method between boards in an in-vehicle display device in which a display unit can be opened and closed with respect to a base unit.
    A communication connection method in which the first substrate of the base unit and the second substrate of the display unit are automatically brought close to each other to achieve a non-contact communication distance due to the rotational operation of opening the display unit. ..
PCT/JP2020/038044 2020-10-07 2020-10-07 In-vehicle display device and communication connection method WO2022074775A1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0627362U (en) * 1992-09-22 1994-04-12 株式会社ザナヴィ・インフォマティクス In-vehicle display device
JPH06230852A (en) * 1993-01-28 1994-08-19 Sharp Corp Information processor
JPH0926834A (en) * 1995-07-12 1997-01-28 Hitachi Maxell Ltd Electronic equipment
WO2005016697A1 (en) * 2003-08-19 2005-02-24 Matsushita Electric Industrial Co., Ltd. On-vehicle display device
JP2008164800A (en) * 2006-12-27 2008-07-17 Sony Corp Image display device
JP2009026049A (en) * 2007-07-19 2009-02-05 Toshiba Tec Corp Handy terminal
JP2012194266A (en) * 2011-03-15 2012-10-11 Mitsubishi Electric Corp Display device
JP2019527391A (en) * 2016-07-01 2019-09-26 インテル コーポレイション Convertible dual screen laptop

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0627362U (en) * 1992-09-22 1994-04-12 株式会社ザナヴィ・インフォマティクス In-vehicle display device
JPH06230852A (en) * 1993-01-28 1994-08-19 Sharp Corp Information processor
JPH0926834A (en) * 1995-07-12 1997-01-28 Hitachi Maxell Ltd Electronic equipment
WO2005016697A1 (en) * 2003-08-19 2005-02-24 Matsushita Electric Industrial Co., Ltd. On-vehicle display device
JP2008164800A (en) * 2006-12-27 2008-07-17 Sony Corp Image display device
JP2009026049A (en) * 2007-07-19 2009-02-05 Toshiba Tec Corp Handy terminal
JP2012194266A (en) * 2011-03-15 2012-10-11 Mitsubishi Electric Corp Display device
JP2019527391A (en) * 2016-07-01 2019-09-26 インテル コーポレイション Convertible dual screen laptop

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