JP5990485B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device.

  2. Description of the Related Art Conventionally, a display device for a vehicle that is attached to a vehicle instrument panel or the like and displays information such as vehicle information and navigation information is known. In recent years, a head that superimposes information with a scenery in front is visually recognized. Up-display devices have been proposed. This head-up display device includes an irradiation device that irradiates display light, and a combiner (reflecting plate) that reflects display light. The combiner is accommodated in the instrument panel, and can be moved between the accommodation position and a deployment position where the user can visually recognize the combiner. As a method of moving the combiner, it is considered that a rotation shaft is provided at the lower end of the combiner, the combiner is tilted around the rotation shaft, and the combiner is moved up and down along the vertical direction.

  For example, Patent Document 1 discloses a head-up display device including a case that accommodates a display, a combiner, a folding mirror, and the like when the device is not used. An opening is formed on the upper surface of the case so that the combiner can be taken in and out. The opening is closed by a shutter when not in use and opened when in use.

JP 2006-69473 A

  In the moving method of rotating the combiner, a development space corresponding to the size of the combiner is required for the opening, so that it is difficult to design a shutter that covers the opening in a compact manner. On the other hand, in the moving method in which the combiner is moved up and down, a development space is not required, but a large space is required in the up and down direction of the combiner.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display device for a vehicle that can close an opening on an upper surface of a housing case for taking in and out a reflecting plate with a shutter having a compact configuration. It is to be.

In order to solve such a problem, the present invention provides a storage case having an opening on the upper surface, an irradiation device that is stored in the storage case and irradiates display light, and an interior of the storage case so as to cover the upper side of the irradiation device. The reflector is configured to be movable between a housing position accommodated in the housing and a deployment position projecting from the housing case through the opening, and is disposed in the opening of the housing case for reflecting the display light emitted from the irradiation device. A shutter moving mechanism that moves the shutter between a shutter to be opened, a closed position that closes the opening, and an open position that opens the opening, and moves the shutter by transmitting power to the shutter moving mechanism A vehicle display device having a drive motor. In this case, the shutter includes a pair of upper and lower shutter members, and the upper shutter member and the lower shutter member are slidably engaged with each other. The shutter moving mechanism includes a shutter arm that is rotated by power from a driving motor, a link mechanism that is connected to the shutter arm, a link arm that is coupled to the upper shutter member, and a side of the reflector. And a guide plate formed with a first guide groove for guiding the movement of the upper shutter member and a second guide groove for guiding the movement of the lower shutter member. The shutter moving mechanism moves the link arm according to the rotation of the shutter arm, so that the pair of shutter members move between the closed position and the open position while shifting the overlapping width of each other.

  Here, in the present invention, the pair of shutter members are arranged in parallel along the opening and closing direction by reducing the overlapping width in the closed position, and opened and closed by increasing the overlapping width in the open position. It is preferable to retreat from the opening in such a manner that it is arranged in a narrow line along the direction and is inclined in the vertical direction.

  The present invention further includes a control unit that controls the movement operation of the shutter and the reflection plate, and the control unit moves the reflection plate from the storage position to the deployment position after the shutter is stored in the open position. It is preferable.

  According to the present invention, the shutter is constituted by a pair of shutter members superimposed on each other. For this reason, the shutter is narrow when selecting a wide state to cover a large opening by changing the overlapping width of the individual shutter members, or when opening the opening and storing the shutter. You can select different states. Thereby, the opening part of the upper surface of the storage case which takes in and out a reflecting plate can be reliably closed with the shutter of a compact structure.

The perspective view which shows the interior of the vehicle provided with the head-up display apparatus which concerns on this embodiment The perspective view which shows typically the external appearance of the head-up display apparatus shown in FIG. Front view schematically showing a shutter drive unit for operating the shutter The perspective view which shows a shutter drive unit typically Explanatory drawing which shows the principal part of a shutter drive unit typically Explanatory drawing which shows the principal part of a shutter drive unit typically Block diagram showing the configuration of the control system of the head-up display device Flowchart showing the shutter opening operation associated with the combiner unfolding operation Explanatory drawing showing shutter opening operation Explanatory drawing showing shutter opening operation Explanatory drawing showing shutter opening operation Explanatory drawing showing combiner unfolding operation Explanatory drawing showing combiner unfolding operation Flow chart showing shutter closing operation when power is turned on

  FIG. 1 is a perspective view showing the interior of a vehicle equipped with a head-up display device 1 according to the present embodiment, and FIG. 2 is a perspective view schematically showing the appearance of the head-up display device 1 shown in FIG. is there. FIG. 3 is a front view schematically showing a shutter drive unit 80 for operating the shutter 7, and FIG. 4 is a perspective view schematically showing the shutter drive unit 80. The head-up display device 1 (hereinafter referred to as “HUD device 1”) is a vehicle display device that is arranged on an instrument panel 200 of a vehicle and displays vehicle information and navigation information. An opening 200a is provided in the front portion of the driver's seat of the instrument panel 200, and the HUD device 1 is disposed so that the upper portion thereof is exposed from the opening 200a.

  The HUD device 1 is mainly composed of an irradiation device 2, a combiner 3 that is a reflecting plate, a housing case 6, and a shutter 7. The HUD device 1 is configured to be able to move the combiner 3 between the accommodation position and the deployed position, and the combiner 3 can be taken in and out of the upper portion of the instrument panel 200 through this operation.

  The irradiation device 2 is a device that irradiates the display light L1 (see FIG. 1), and is mainly composed of, for example, a liquid crystal display device. In the present embodiment, the irradiation device 2 is disposed so as to face the rear of the vehicle, and the irradiated display light L1 is reflected to the front of the vehicle by a folding mirror (not shown), and the display is the reflected light. The combiner 3 is irradiated with light L1.

  The combiner 3 is a half mirror, for example, and is composed of a plate glass and a light semi-transmissive film such as tin or silver deposited on one surface of the plate glass. The combiner 3 has translucency, and is formed so that the driver can see the front of the vehicle through the combiner 3.

  The combiner 3 is rotatably supported by guide plates 41 provided on the left and right sides of the combiner 3, and can be moved between the storage position and the unfolded position by the combiner drive unit 30. Here, the accommodation position is a position where the combiner 3 is accommodated in the accommodation case 6 so as to cover the irradiation device 2 (see FIG. 3), and the development position is the opening 62 a of the upper case 62. It is a position which protrudes from storage case 6 through.

  The combiner drive unit 30 includes a drive motor 32 and a combiner moving mechanism. The drive motor 32 is a drive source that transmits power to the combiner moving mechanism to move the combiner 3. As the drive motor 32, a stepping motor or the like can be used. The combiner moving mechanism moves the combiner 3 between the accommodation position and the deployed position, and includes a plurality of gears, a link mechanism, and the like.

  The housing case 6 is a case for housing the irradiation device 2, the combiner 3, the shutter 7, and the like. The storage case 6 includes a lower case 61 and an upper case 62, and is configured to be split vertically. The lower case 61 is formed in a box shape having an upper opening. The upper case 62 is formed in a box shape having an opening at the bottom, and is provided so as to close the opening of the lower case 61. On the upper surface of the upper case 62, an opening 62a for taking in and out the combiner 3 is formed.

  The shutter 7 is a member that opens the opening 62a on the upper surface of the upper case 62 or closes the opening 62a. The shutter 7 is composed of a pair of shutter members 71 and 72 that are stacked one above the other in parallel, and the upper shutter member 71 and the lower shutter member 72 are slidably engaged with each other. The sliding direction of the shutter members 71 and 72 corresponds to the front-rear direction of the vehicle, which is the opening / closing direction of the shutter 7.

  In the present embodiment, the HUD device 1 further includes a shutter drive unit 80 that opens and closes the shutter 7, that is, moves the shutter 7 between a closed position and an open position. The shutter drive unit 80 includes a drive motor 81 and a shutter moving mechanism 82. Here, FIGS. 5 and 6 are explanatory views schematically showing the main part of the shutter drive unit 80.

  The drive motor 81 is a drive source that transmits power to the shutter moving mechanism 82 to move the shutter 7. As the drive motor 32, a stepping motor or the like can be used.

  The shutter moving mechanism 82 moves the shutter 7 between a closed position and an open position. Here, the closed position is a position where the opening 62a of the storage case 6 is closed, and the shutter 7 is positioned to the closed position on the assumption that the combiner 3 exists in the storage position. In this closed position, the pair of shutter members 71 and 72 are arranged in a wide line along the opening / closing direction by reducing the overlapping width of the shutter members 71 and 72, and covers the upper portion of the combiner 3 so as to overlap the combiner 3. On the other hand, the open position is a position at which the opening 62a of the housing case 6 is opened, and the shutter 7 is positioned at the open position prior to the combiner 3 moving to the deployed position. In this open position, the pair of shutter members 71 and 72 are arranged in a narrow line along the opening / closing direction by widening the overlapping width of each other, and are retracted from the opening 62a in an inclined manner in the vertical direction. (Position of broken line in FIG. 6).

  The shutter moving mechanism 82 includes a drive gear 83, a first multi-stage gear 84, a second multi-stage gear 85, a driven gear 86, an arm mounting portion 87, a shutter arm 88, a link arm 90, and an auxiliary plate. 92.

  The drive gear 35 is a worm gear fixed to the output shaft of the drive motor 32. The drive gear 35 meshes with the first multistage gear 36. The first multi-stage gear 36 is configured by superimposing a worm wheel and a worm gear on the same axis. The worm wheel meshes with the drive gear 35, and the worm gear meshes with the second multi-stage gear 85. The second multi-stage gear 85 is configured by superimposing a large-diameter gear and a small-diameter gear on the same axis, and the large-diameter gear that is one of the gears meshes with the first multi-stage gear 36 and the other gear. A small diameter gear meshes with the driven gear 86. The driven gear 86 is rotatably supported by the guide plate 42, and an arm mounting portion 87 is fixedly arranged on the same axis. The arm attachment portion 87 can rotate in synchronization with the driven gear 86.

  The shutter arm 88 has a base end fixed to an arm mounting portion 87 and is configured to be rotatable about the arm mounting portion 87. A groove 88 a for connecting the link arm 90 is formed on the distal end side of the shutter arm 88.

  The link arm 90 is connected to the upper shutter member 71 via connecting portions 90a and 90b provided at both ends thereof. The link arm 90 is connected to the shutter arm 88 at the center position to form a link mechanism, and moves the upper shutter member 71 through the rotation of the shutter arm 88.

  The auxiliary plate 92 is provided on the side of the guide plate 41 and constitutes a part of the guide plate 41. The auxiliary plate 92 is formed with first guide grooves 92a and 92b and a second guide groove 92c. The first guide grooves 92a and 92b guide the movement of the upper shutter member 71 when the connecting portions 90a and 90b provided at both ends of the link arm 90 are inserted. On the other hand, the second guide groove 92 c guides the movement of the lower shutter member 72 by inserting the sliding portion 91 provided in the lower shutter member 72.

  In the shutter moving mechanism 82, the moving operation of the shutter 7 is achieved by a link mechanism including the shutter arm 88 and the link arm 90. Here, the connecting portions 90a and 90b and the sliding portion 91 of the link arm 90 are positioned at the end of the first guide grooves 92a and 92b and the second guide groove 92c on the vehicle rear side (left direction in FIG. 6). As a result, the shutter 7 is positioned at the closed position. On the other hand, the connecting portions 90a and 90b and the sliding portion 91 of the link arm 90 are positioned at the end portion on the vehicle front side (right direction in FIG. 6) in the first guide grooves 92a and 92b and the second guide groove 92c. Then, the shutter 7 is positioned at the open position.

  From the viewpoint of assisting smooth movement of the shutter 7 including the pair of shutter members 71 and 72, the link arm 90 and the auxiliary plate 92 are also provided on the guide plate 41 opposite to the guide plate 41 on which the drive motor 81 is provided. Is provided.

  FIG. 7 is a block diagram showing a control system of the HUD device 1 according to the present embodiment. The control unit 100 has a function of controlling the HUD device 1 and can use, for example, an MPU (Micro-Processing Unit). The control unit 100 includes a central processing unit (CPU) that is a control unit that performs various processes and controls according to a predetermined program, a ROM that is a read-only memory storing a program for the CPU, It is composed of a RAM that is a readable / writable memory that stores data and has an area necessary for processing operations of the CPU.

  Information on ambient brightness detected by the light sensor 103 and predetermined information are input to the control unit 100 through an input / output interface (I / O) connected to the CAN.

  The control unit 100 controls a liquid crystal display device (LCD) 22 that forms part of the irradiation device 2 via the LCD driver 21. The control unit 100 is connected to a combiner drive motor driver 101 and outputs an operation signal to the motor driver 101 to rotationally drive the drive motor 32. Further, the control unit 100 is connected to a shutter drive motor driver 102 and rotates the drive motor 81 by outputting an operation signal to the motor driver 102.

  Hereinafter, the movement operation of the shutter 7 in the HUD device 1 according to the present embodiment will be described. Here, FIG. 8 is a flowchart showing the flow of the shutter opening operation. The opening operation of the shutter 7 is an operation for moving the shutter 7 in the closed position to the open position, and is performed prior to the unfolding operation for moving the combiner 3 from the storage position to the unfolding position. As shown in FIG. 9, the pair of shutter members 71 and 72 are in a state of being arranged in a wide line along the opening / closing direction.

  When performing the unfolding operation of the combiner 3, since it is necessary to output an operation signal to the shutter drive motor driver 102, an affirmative determination is made in step 10 (S10), and the process proceeds to step 11 (S11). On the other hand, when the deploying operation of the combiner 3 is not performed, it is not necessary to output an operation signal to the shutter drive motor driver 102. Therefore, a negative determination is made in step 10, and the processing of step 10 is performed again.

  In step 11, the control unit 100 outputs an operation signal to the shutter drive motor driver 102. Thus, a predetermined current is supplied from the shutter drive motor driver 102 to the drive motor 81, and the drive motor 81 is rotationally driven.

  When the drive motor 81 is rotationally driven, the drive gear 83 is also rotated in synchronization, whereby the first multi-stage gear 84, the second multi-stage gear 85, the driven gear 86, and the arm mounting portion 87 are rotated. Due to the rotation of the arm attachment portion 87, the shutter arm 88 rotates around the arm attachment portion 87. At this time, the shutter arm 34 rotates from the rear to the front, and the link arm 90 also moves from the rear to the front in conjunction with the rotation. At this time, the link arm 90 is guided and moved by the first guide grooves 92a and 92b due to the presence of the connecting portions 90a and 90b.

  When the link arm 90 moves, the upper shutter member 71 also moves from the rear to the front in conjunction with the link arm 90. In this case, when the upper shutter member 71 slides with respect to the lower shutter member 72, the overlapping width of the pair of shutter members 71, 72 increases, and reaches a position where this becomes the maximum (FIG. 10). reference). When the overlap width is maximized, the pair of shutter members 71 and 72 sinks into the housing case 6 while being tilted in a synchronized state (see FIG. 11). As a result, the pair of shutter members 71 and 72 are retracted from the opening 62a so as to be inclined in the vertical direction, and are positioned at the open position.

  Referring to FIG. 8 again, in step 12, the control unit 100 determines whether the shutter operation is finished, that is, whether the shutter 7 has moved to the open position. If an affirmative determination is made in step 12, that is, if the shutter operation is completed, the process proceeds to step 13 (S13). On the other hand, if a negative determination is made in step 12, that is, if the shutter operation has not ended, the process returns to step 11.

  In step 13, the control unit 100 outputs a stop signal to the shutter drive motor driver 102. As a result, the current supplied from the shutter drive motor driver 102 to the drive motor 81 is cut off, and the drive motor 81 stops.

  In step 14 (S14), the control unit 100 outputs an operation signal to the combiner driving motor driver 101. As a result, a predetermined current is supplied from the combiner drive motor driver 101 to the drive motor 32, and the drive motor 32 is rotationally driven.

  When the drive motor 32 is rotationally driven, the power of the drive motor 32 is transmitted to the combiner moving mechanism, and the combiner 3 moves upward (see FIG. 12). Then, when the combiner 3 reaches the upper limit position defined by the combiner moving mechanism, the combiner 3 reaches the deployed position (see FIG. 13).

  In step 15 (S15), the control unit 100 determines whether the combiner operation has ended, that is, whether the combiner 3 has moved to the deployed position. If an affirmative determination is made in step 15, that is, if the combiner operation has ended, the process proceeds to step 16 (S16). On the other hand, if a negative determination is made in step 15, that is, if the combiner operation has not ended, the process returns to step 14.

  In step 16, the control unit 100 outputs a stop signal to the combiner driving motor driver 101. As a result, the current supplied from the combiner drive motor driver 101 to the drive motor 32 is cut off, and the drive motor 32 stops. Through such a series of operations, the shutter 7 opening operation including the deploying operation of the combiner 3 is completed.

  In addition, the closing operation of the shutter 7 is performed according to a procedure reverse to the above-described procedure by causing the drive motor 81 to perform a reverse operation. Here, the closing operation of the shutter 7 is an operation of moving the shutter 7 in the open position to the closing position, and is executed after the storing operation of moving the combiner 3 from the deployed position to the storing position.

  Furthermore, the user may turn off the ignition switch while the combiner 3 remains in the deployed position. In this case, the control unit 100 performs the closing operation of the shutter 7 after moving the combiner 3 to the accommodation position at the next activation. Here, FIG. 14 is a flowchart showing the closing operation of the shutter 7 when the power is turned on.

  First, when the ignition switch (IGN) is turned on, an affirmative determination is made in step 20, and the process proceeds to step 21 (S21). On the other hand, if the ignition switch (IGN) is not turned on, the process returns to step 20 without proceeding to step 21.

  In step 21, the control unit 100 outputs an operation signal to the combiner driving motor driver 101. As a result, a predetermined current is supplied from the combiner drive motor driver 101 to the drive motor 32, and the drive motor 32 is rotationally driven.

  In step 22 (S22), the control unit 100 determines whether the combiner operation has ended, that is, whether the combiner 3 has moved to the accommodation position. If an affirmative determination is made in step 22, that is, if the combiner operation is completed, the process proceeds to step 23 (S23). On the other hand, if a negative determination is made in step 22, that is, if the combiner operation has not ended, the process returns to step 21.

  In step 23, the control unit 100 outputs a stop signal to the combiner driving motor driver 101. As a result, the current supplied from the combiner drive motor driver 101 to the drive motor 32 is cut off, and the drive motor 32 stops.

  In step 24 (S24), the control unit 100 outputs an operation signal to the shutter driving motor driver 102. Thus, a predetermined current is supplied from the shutter drive motor driver 102 to the drive motor 81, and the drive motor 81 is rotationally driven.

  In step 25 (S25), the control unit 100 determines whether the shutter operation is finished, that is, whether the shutter 7 has moved to the closed position. If an affirmative determination is made in step 25, that is, if the shutter operation is completed, the process proceeds to step 26 (S26). On the other hand, if a negative determination is made in step 25, that is, if the shutter operation has not ended, the process returns to step 24.

  In step 26, the control unit 100 outputs a stop signal to the shutter driving motor driver 102. As a result, the current supplied from the shutter drive motor driver 102 to the drive motor 81 is cut off, and the drive motor 81 stops. Through such a series of operations, the closing operation of the shutter 7 including the accommodating operation of the combiner 3 is completed.

Thus, in the present embodiment, the HUD device 1 is configured to be movable between the housing case 6 having the opening 62a on the upper surface and the housing position and the deployment position, and the display light L1 emitted from the irradiation device 2 Power, the shutter 7 disposed in the opening 62a of the housing case 6, the shutter moving mechanism 82 that moves the shutter 7 between the closed position and the open position, and the shutter moving mechanism 82. And a drive motor 81 for transmitting and moving the shutter 7. In this case, the shutter 7 includes a pair of shutter members 71 and 72 that are superposed on each other, and the upper shutter member 71 and the lower shutter member 72 are slidably engaged. The shutter moving mechanism 82 includes a shutter arm 88 that is rotated by power from the drive motor 81, a link arm 90 that is connected to the shutter arm 88 to form a link mechanism and is coupled to the upper shutter member 71, and the combiner 3. The first guide grooves 92a and 92b are provided so as to guide the movement of the upper shutter member 71 and the second guide groove 92c is formed to guide the movement of the lower shutter member 72. And an auxiliary plate 92. The shutter moving mechanism 82 moves the link arm 90 according to the rotation of the shutter arm 88, so that the pair of shutter members 71 and 72 move between the closed position and the open position while shifting the overlapping width of each other. To do.

  According to such a configuration, the shutter is configured by the pair of shutter members 71 and 72 that are overlapped with each other. For this reason, the shutter 7 has a width when the wide range for covering the large opening 62a is selected by changing the overlapping width of the shutters 7 or when the shutter 7 is accommodated by opening the opening 62a. A narrow state can be selected. Thereby, the opening part 62a of the upper surface of the storage case 6 which takes in and out the combiner 3 can be reliably closed with the shutter 7 of a compact structure at the time of storage or moving operation.

  Further, in the present embodiment, the pair of shutter members 71 and 72 are arranged in a wide line along the opening / closing direction by reducing the overlapping width in the closed position, while increasing the overlapping width in the open position. Thus, they are arranged in parallel with each other along the opening and closing direction and are retracted from the opening 62a so as to be inclined in the vertical direction.

  According to such a configuration, when the wide position for covering the large opening 62a is selected at the closed position, or when the shutter 7 is accommodated by opening the opening 62a at the open position, the narrow state is set. You can choose. Thereby, even if the compact shutter 7 is used, the large opening 62a corresponding to the combiner 3 can be effectively closed. Furthermore, since the pair of shutter members 71 and 72 are retracted from the opening 62a in the open position and inclined in the vertical direction, the shutter 7 is accommodated in the housing case 6 without securing a large space forward. Can be stored.

  In the present embodiment, the control unit 100 moves the combiner 3 from the storage position to the deployment position after the shutter 7 is stored in the open position.

  According to such a configuration, interference between the shutter 7 and the combiner 3 can be appropriately prevented.

  The vehicle display device according to this embodiment has been described above, but the present invention is not limited to this embodiment, and various modifications can be made within the scope of the invention.

DESCRIPTION OF SYMBOLS 1 HUD apparatus 2 Irradiation apparatus 3 Combiner 30 Combiner drive unit 32 Drive motor 41 Guide plate 5 Light shielding plate 6 Storage case 61 Lower case 62 Upper case 62a Opening part 7 Shutter 71 Upper shutter member 72 Lower shutter member 80 Shutter drive unit 81 drive motor 82 shutter moving mechanism 83 drive gear 84 first multi-stage gear 85 second multi-stage gear 86 driven gear 87 arm mounting portion 88 shutter arm 88a groove portion 90 link arm 90a first interlocking portion 90b second interlocking portion 91 Sliding portion 92 Auxiliary plate 92a First guide groove 92b First guide groove 92c Second guide groove 101 Motor driver for combiner drive 102 Motor driver for shutter drive

Claims (3)

A storage case with an opening on the top surface;
An irradiation device that is housed in the housing case and emits display light; and
The irradiation device is configured to be movable between a storage position stored in the storage case so as to cover the upper side of the irradiation device and a deployment position protruding from the storage case through the opening, and irradiated from the irradiation device. A reflector that reflects the display light;
A shutter disposed in the opening of the housing case;
A shutter moving mechanism for moving the shutter between a closed position for closing the opening and an open position for opening the opening;
A drive motor that transmits power to the shutter moving mechanism to move the shutter.
The shutter is
It is provided with a pair of shutter members stacked one above the other, and the upper shutter member and the lower shutter member are slidably engaged,
The shutter moving mechanism is
A shutter arm that rotates with power from the drive motor;
A link arm coupled to the shutter arm to form a link mechanism, and a link arm coupled to the upper shutter member;
A first guide groove that is erected on the side of the reflecting plate and guides the movement of the upper shutter member and a second guide groove that guides the movement of the lower shutter member are formed. A guide plate,
By moving the link arm according to the rotation of the shutter arm, the pair of shutter members move between the closed position and the open position while shifting the overlapping width of each other. Display device.   In the closed position, the pair of shutter members are arranged in a wide line along the opening / closing direction by reducing the overlapping width of the shutter member, while, in the opening position, the pair of shutter members are extended along the opening / closing direction by increasing the overlapping width of each other. 2. The vehicular display device according to claim 1, wherein the vehicular display device is arranged in parallel with a narrow width and retreats from the opening in a manner inclined in the vertical direction. A control unit for controlling movement of the shutter and the reflector;
3. The vehicular display device according to claim 1, wherein the control unit moves the reflecting plate from the accommodated position to the deployed position after the shutter is accommodated in the open position. 4. .

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