JP2020100912A - Image display system - Google Patents

Abstract

To allow a helmet wearer to easily confirm an outside scenery when the helmet wearer turns or tilts his/her head to the left or right.SOLUTION: In a navigation system 1 in which a head-up display device 40 is provided on a helmet, for generating a guide image and displaying the generated guide image at a steady position visible to a helmet wearer, a detection unit 35 is further provided for detecting rotation of a helmet 20 in a right or left direction when viewed from the helmet wearer, and when the rotation is detected by the detection unit 35, the head-up display device 40 performs displacement processing for emitting display light so as to rotate a display position of the guide image from the stationary position in a direction opposite to the rotation detected by the detection unit 35.SELECTED DRAWING: Figure 2

Description

The present invention relates to an image display system including a head-up display device that is provided on a helmet, generates a display image, and displays the generated display image at a steady position visible to a helmet wearer.

Patent Document 1 discloses an image display system that is provided on a helmet and that includes a head-up display device that generates a display image and that displays the generated display image at a steady position visible to a helmet wearer.

JP, 2008-65593, A

By the way, in Patent Document 1, when a helmet wearer rotates or tilts his/her head to the left or right, the display image displayed by the head-up display device rotates or tilts relative to the scenery outside the helmet, It may be difficult for the helmet wearer to see the outside scenery. In Patent Document 1 above, no measures are taken against this problem.

The present invention has been made in view of the above points, and an object thereof is to make it easier for a helmet wearer to check the outside scenery when the helmet wearer rotates or tilts his/her head left or right. Especially.

In order to achieve the above object, the present invention provides an image display system including a head-up display device that is provided in a helmet, generates a display image, and displays the generated display image at a steady position visible to a helmet wearer. The following solution measures were taken for.

That is, the first invention further includes a detection unit that detects rotation of the helmet in the left-right direction when viewed from a helmet wearer, and when the rotation is detected by the detection unit, the head-up display device, Displacement processing for emitting display light is performed so that the display position of the display image is rotated from the steady position in the direction opposite to the rotation detected by the detection unit.

As a result, even if the helmet wearer rotates his or her head to the left or right, the display image displayed by the head-up display device rotates in the opposite direction of the rotation of the head due to the displacement process, and the helmet causes the helmet to display the display image. Since the relative rotation with respect to the outside scenery is suppressed, the helmet wearer can easily confirm the outside scenery.

Further, in the state where the viewpoint of the helmet wearer is in a steady position, when the helmet wearer rotates his/her head left and right to check the left and right, the display image displayed by the head-up display device is a steady position by the displacement process, That is, since it is away from the viewpoint of the helmet wearer, the display image is less likely to be an obstacle for the helmet wearer to confirm the outside scenery.

2nd invention is the image display system of 1st invention, The said detection part acquires the angle of the detected rotation, The said displacement process detected the display position of the said display image by the said detection part. It is characterized in that it is rotated from the steady position by the angle acquired by the detection unit in the opposite direction of rotation.

As a result, it is possible to eliminate the relative movement of the display image with respect to the outside scenery of the helmet due to the rotation of the helmet, and thus it is possible to make the helmet wearer feel that the displayed image is a part of the outside scenery. ..

A third aspect of the present invention further includes a detection unit that detects an inclination of the helmet in a left-right direction when viewed from a helmet wearer, and when the inclination is detected by the detection unit, the head-up display device displays the display. Displacement processing for emitting display light is performed so that the display position of the image is tilted from the steady position in the direction opposite to the tilt detected by the detection unit.

As a result, even if the helmet wearer tilts his/her head to the left or right, the display image displayed by the head-up display device is tilted by the displacement process, and the display image due to the tilting of the helmet is relative to the scenery outside the helmet. Since the inclination is suppressed, it is easy for the helmet wearer to see the outside scenery.

Even when a helmet wearer gets on a motorcycle or the like and tilts the entire body to the left or right, the display image displayed by the head-up display device tilts in the direction opposite to the tilt of the body due to the displacement process, and the helmet tilts. Since the relative inclination of the display image with respect to the outside scenery of the helmet is suppressed by doing so, it is possible to reduce the discomfort caused by the inclination of the display image with respect to the outside scenery.

4th invention is the image display system of 3rd invention, The said detection part acquires the angle of the detected inclination, The said displacement process detected the display position of the said display image by the said detection part. It is characterized in that it is tilted from the steady position by an angle acquired by the detection unit in a direction opposite to the tilt.

Accordingly, the inclination of the display image with respect to the outside scenery of the helmet can be eliminated, so that the discomfort caused by the inclination of the display image with respect to the outside scenery can be more effectively reduced.

According to the present invention, it becomes easier for a helmet wearer to check the outside scenery.

1 is an external view showing the configuration of a navigation system as an image display system according to a first embodiment of the present invention. It is a functional block diagram which shows the structure of the navigation system as an image display system which concerns on Embodiment 1 of this invention. It is a figure which shows the guidance image produced|generated by GDC. (A) is a figure which shows the display screen by the display light radiate|emitted by LCOS, when the display position of a guide image is a steady position, (b) is the displacement which rotates the display position of a guide image leftward. It is a figure which illustrates the display screen by the display light radiate|emitted by LCOS, when a process is performed. 5A is a plan view of the helmet when the display position of the guide image is a steady position, and FIG. 5B is a state in which the helmet wearer rotates the head 30 degrees to the right from the state of FIG. FIG. 6 is a view corresponding to FIG. FIG. 6 is a view corresponding to FIG. 2 of the second embodiment. 7A is a view of the window hole viewed from the inside when the helmet wearer is standing upright with the upper half of the body straight and the display position of the guide image is the steady position, and FIG. It is a figure equivalent to FIG.7(a) when a helmet wearer inclines a head 30 degrees to the right from the state of FIG.

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

(Embodiment 1)
FIG. 1 shows a navigation system 1 as an image display system according to the first embodiment of the present invention. The navigation system 1 includes a smartphone 10 and a helmet 20.

As shown in FIG. 2, the smartphone 10 includes a wireless communication interface 11 that performs wireless communication using Bluetooth (registered trademark) and a GPS receiver 12. In addition, the smartphone 10 includes a mobile operation system 13, which is the OS of the smartphone 10, and a car navigation service application program (hereinafter, a car navigation service application program that operates on the mobile operation system 13 using the position information acquired by the GPS receiver 12). , "Car navigation app"). When executing the car navigation application 14, the smartphone 10 acquires, at predetermined time intervals, guidance information indicating the distance from the current location to a guidance point to be reached next and the traveling direction at the guidance point, and speed information indicating the current speed. Then, the data is transmitted by wireless communication by the wireless communication interface 11.

The helmet 20 is provided with a main body 20a of the helmet, and a window hole 21 is formed on the front side of the main body 20a of the helmet 20 so as to face the forehead and the jaw of the helmet wearer. Translucent shields 22 are attached to the left and right sides of the peripheral edge of the window hole 21 so as to open and close the window hole 21 by rotating in the vertical direction. A plurality of switches including the first switch 23 are arranged on the outer surface of the helmet body 20a on the left side of the window 21 of the helmet wearer, that is, at a position corresponding to the ear of the helmet wearer. A display light emitting device having a function of generating a guide image I (see FIG. 3) as a display image and emitting display light corresponding to the generated guide image I below the window 21 of the helmet body 20a. 30 and a mirror 28 that projects (emits) the display light emitted by the display light emitting device 30 onto a combiner 26 described later. In addition, a semitransparent plate-like combiner 26 is provided at the right side of the upper edge of the window hole 21 of the helmet body 20a when viewed from the helmet wearer with respect to the center in the left-right direction. It is attached from the inside via an attachment member 27 so as to be located in front of (see 5). The combiner 26 reflects the display light emitted by the display light emitting device 30 in a direction visible to the helmet viewer, thereby displaying the guide image I at a position visible to the helmet wearer.

As shown in FIG. 2, the display light emitting device 30 includes a gyro sensor 29, a Bluetooth module 30a, a calculation unit 30b, a display control unit 30c, a flash ROM (Read Only Memory) 30d, and a GDC (Graphics Display Controller). ) 30e and LCOS (Liquid Crystal on Silicon) 30f. The display light emitting device 30 is activated by pressing the first switch 23 for a long time.

The gyro sensor 29 detects the angular velocity of the left-right rotation of the helmet 20 when viewed from the helmet wearer.

The Bluetooth module 30a receives the guidance information and the speed information from the wireless communication interface 11 of the smartphone 10 at predetermined time intervals.

The calculation unit 30b detects the rotation of the helmet 20 in the left-right direction when viewed from the helmet wearer based on the angular velocity detected by the gyro sensor 29, and calculates the detected rotation angle. The gyro sensor 29 and the calculation unit 30b constitute a detection unit 35.

The display control unit 30c instructs the GDC 30e to generate the guide image I based on the guide information and the speed information received by the Bluetooth module 30a and the detection result and the calculation result of the calculation unit 30b. Details of the guide image I will be described later. When the rotation is not detected by the calculation unit 30b, the display control unit 30c controls the LCOS 30f so that the display position of the guide image I becomes the steady position P (see FIG. 5) visible to the helmet wearer. .. The stationary position P is a position in front of the right eye of the helmet wearer, and even if the helmet 20 moves, the relative position of the stationary position P to the helmet 20 is constant. On the other hand, when the calculation unit 30b detects the rotation of the helmet 20 in one of the left and right directions when viewed from the helmet wearer, the display position of the guide image I is set in the direction opposite to the rotation detected by the calculation unit 30b ( The LCOS 30f is controlled so as to rotate from the steady position P by the angle calculated by the calculation unit 30b in the other direction (left and right direction). In addition, after the display position of the guide image I by the combiner 26 is rotated from the steady position P, when the rotation of the helmet 20 in the other left-right direction as detected by the helmet wearer is detected by the calculation unit 30b, the guide image is displayed. The LCOS 30f is controlled so that the display position of I returns to the steady position P. Further, the display control unit 30c forcibly stops the emission of the display light by the LCOS 30f when the first switch 23 is shortly pressed. The functions of the calculation unit 30b and the display control unit 30c are realized by the microcomputer 31.

The flash ROM 30d stores characters and patterns to be displayed on the guide image I described later.

The GDC 30e combines a character and a pattern stored in the flash ROM 30d based on an instruction from the display control unit 30c to generate a guide image I as shown in FIG. The guide image I shows the distance 33a to the guide point, the traveling direction 33b at the guide point, and the scheduled time 33c of arriving at the guide point.

The LCOS 30f emits display light for displaying the guide image I generated by the GDC 30e on the combiner 26. When the left/right rotation of the head of the helmet wearer is detected by the calculation unit 30b, the display position of the guide image I displayed on the LCOS 30f is detected by the calculation unit 30b under the control of the display control unit 30c. In the opposite direction, the displacement process of emitting the display light is performed so that the display light is rotated from the steady position P by the angle calculated by the calculation unit 30b. When the left/right rotation of the helmet wearer's head is detected by the computing unit 30b, display light for displaying the guide image I after the displacement process on the combiner 26 is emitted. 4A is a display screen S by the display light emitted by the LCOS 30f when the display position of the guide image I is the steady position P, and FIG. 4B shows the display position of the guide image I on the left. 7 is an example of the display screen S by the display light emitted by the LCOS 30f when the displacement process of rotating in the direction is performed.

The Bluetooth module 30a, the display controller 30c, the flash ROM 30d, the GDC 30e, the LCOS 30f, and the mirror 28 constitute an optical module 34. Further, the display light emitting device 30, the mirror 28, and the combiner 26 form a head-up display device 40.

In the navigation system 1 having the above configuration, when the display light emitting device 30 is activated, the guidance information and the speed information are received by the Bluetooth module 30a of the display light emitting device 30 by executing the car navigation application 14 of the smartphone 10. Then, the guide image I is generated by the GDC 30e based on the guide information and the speed information, and the display light corresponding to the guide image I is emitted from the LCOS 30f and then reflected by the mirror 28. Then, the display light reflected by the mirror 28 is projected onto the combiner 26 and reflected by the combiner 26. As a result, the helmet wearer can visually recognize the guide image I as a virtual image in a state of being superimposed on the scenery in the front view through the combiner 26.

As shown in FIG. 5A, from the state where the display position of the guide image I is the steady position P and the viewpoint of the helmet wearer is at the steady position P, the helmet wearer puts his head on for confirmation. When rotated 30 degrees to the right as viewed from the helmet wearer (the direction indicated by the arrow X in the figure), the gyro sensor 29 detects the angular velocity of rotation of the helmet 20, and the calculation unit 30b detects the gyro sensor 29. Based on the determined angular velocity, the rotation of the helmet 20 to the right as seen by the helmet wearer is detected, and a value of 30 degrees is acquired as the detected rotation angle. Then, as shown in FIG. 5B, the LCOS 30f rotates the display position of the guide image I by 30 degrees to the left when viewed from the helmet wearer from the steady position P under the control of the display control unit 30c. As a result, the guide image I displayed by the combiner 26 moves away from the stationary position P after rotation, that is, the viewpoint of the helmet wearer after rotation. Therefore, the guide image I is less likely to interfere with the confirmation of the outside scenery by the helmet wearer. Further, since there is no relative movement of the guide image I with respect to the outside scenery due to the rotation of the helmet 20, the helmet wearer can feel that the guide image I is a part of the outside scenery. It is easy to see the scenery.

(Embodiment 2)
FIG. 6 shows a navigation system 1 as an image display system according to the second embodiment of the present invention. In the second embodiment, instead of the gyro sensor 29, the display light emitting device 30 serves as a detection unit that detects the inclination of the helmet 20 in the left-right direction when viewed from the helmet wearer and acquires the detected inclination angle. The tilt sensor 36 is provided. Then, when the inclination is not detected by the inclination sensor 36, the display control unit 30c controls the GDC 30e so that the display position of the guide image I becomes the steady position P visible to the helmet wearer. Here, the steady position P is a position in front of the right eye of the helmet wearer, and is a position where the helmet wearer can visually recognize the guide image I without tilting. Further, even if the helmet 20 moves, the relative position of the steady position P to the helmet 20 is constant. On the other hand, when the inclination sensor 36 detects the inclination of the helmet 20 in one of the left and right directions when viewed from the helmet wearer, the display control unit 30c detects the display position of the guide image I by the inclination sensor 36. The GDC 30e is controlled so as to incline from the steady position P by the angle detected by the inclination sensor 36 in the opposite direction of inclination (the other in the left-right direction). Further, in the state where the guide image I is tilted from the steady position P, when the tilt is not detected by the tilt sensor 36, that is, when the tilt angle acquired by the tilt sensor 36 is 0 degree, the display control unit. The control unit 30c controls the GDC 30e so that the display position of the guide image I returns to the steady position P. Therefore, when the inclination sensor 36 detects the inclination of the helmet 20 in one of the left and right directions when viewed from the helmet wearer, the GDC 30e sets the display position of the guide image I in a direction opposite to the inclination detected by the inclination sensor 36. A displacement process of tilting from the steady position P by the angle detected by the tilt sensor 36 is performed (on the other side in the left-right direction).

FIG. 7A shows a state in which a helmet wearer who is on a two-wheeled vehicle or the like stands upright (along the vertical direction) and the display position of the guide image I is at the steady position P. From this state, when the helmet wearer tilts the entire body to the right when viewed from the helmet wearer, the helmet 20 also tilts 30 degrees to the right (viewed by the arrow Y in the figure) when viewed from the helmet wearer. Then, the inclination sensor 36 detects the inclination of the helmet 20 to the right when seen from the helmet wearer, and acquires a value of 30 degrees as the detected inclination angle. Then, the GDC 30e generates, as the guide image I, an image obtained by inclining the guide image I displayed at the steady position P to the left by 30 degrees when viewed from the helmet wearer. As a result, as shown in FIG. 7B, the display position of the guide image I is a position inclined by 30 degrees from the steady position P to the left as viewed by the helmet wearer. In this way, the guide image I is inclined and the relative inclination of the guide image I to the outside scenery of the helmet 20 due to the inclination of the helmet 20 is eliminated, so that the guide image I is compared to the outside scenery of the helmet 20. It is possible to reduce the discomfort caused by the inclination, and it is easy for the helmet wearer to see the outside scenery.

In the first embodiment, the gyro sensor 29 is used to detect the rotation of the helmet 20 in the left-right direction when viewed from the helmet wearer. However, the gyro sensor 29 is not limited to the triaxial acceleration sensor and the like. The sensor may be used to detect the rotation of the helmet 20 in the left-right direction when viewed from the helmet wearer.

Further, in the first embodiment, the smartphone 10 may be further provided with a gyro sensor that detects an angular velocity. Thereby, the traveling direction of the two-wheeled vehicle can be detected while the smartphone 10 is housed in the bag or case attached to the two-wheeled vehicle, the pocket of the helmet wearer, or the like. If the helmet 20 is not rotating relative to the smartphone 10, the displacement process may not be performed. That is, when the calculation unit 30b of the helmet 20 detects the rotation of the smartphone 10 and acquires the angle of the rotation based on the angular velocity of the smartphone 10, and the rotation direction of the smartphone 10 is equal to the rotation direction of the helmet 20, or When the rotation direction of the smartphone 10 and the rotation direction of the helmet 20 are the same and the rotation angle of the smartphone 10 is the same as the rotation angle of the helmet 20, the displacement process may not be performed. This can prevent the display position of the guide image I from rotating when the helmet wearer faces the traveling direction.

In the first embodiment, the smartphone 10 determines whether or not the current position is a corner based on the map information and the current position by executing the car navigation application 14, and the smartphone 10 determines the current position. When it is determined to be a corner, the head-up display device 40 may consider that the helmet has rotated in the left-right direction, and may perform the displacement process. That is, the smartphone 10 may serve as the detection unit 35.

Further, in the first embodiment, after rotating the display position of the guide image I by the combiner 26 from the steady position P, the rotation of the helmet 20 in the other left and right direction as detected by the helmet wearer is detected by the computing unit 30b. In this case, the display position of the guide image I is returned to the steady position P. However, the display position of the guide image I may be returned to the steady position P when a predetermined time elapses after the display position of the guide image I by the combiner 26 is rotated from the steady position P. Further, when the rotation angle calculated by the calculation unit 30b is equal to or greater than the predetermined angle, the display position of the guide image I when the rotation of the helmet 20 in the other left-right direction is detected when viewed from the helmet wearer. Is returned to the steady position P while the rotation angle calculated by the calculation unit 30b is less than the predetermined angle, the display position of the guide image I is returned to the steady position P when a predetermined time has elapsed. May be. This can prevent a state in which only a part of the guide image I is visible to the helmet wearer from continuing for a long time.

In the second embodiment, the inclination sensor 36 provided on the helmet 20 is used to detect the inclination of the helmet 20. However, the smartphone 10 executes the car navigation application 14 to determine the current position based on the map information and the current position. It is determined whether or not the position is a corner, the current position is a corner, and the displacement processing is performed only when the inclination sensor 36 detects the inclination of the helmet 20 in one of the left and right directions when viewed from the helmet wearer. Therefore, when the current position is not a corner, the displacement process is performed by tilting the neck for a purpose not related to driving, such as flexible gymnastics of the neck. It can be prevented.

In addition, in the second embodiment, the display light emitting device 30 is further provided with the gyro sensor 29 and the calculation unit 30b of the first embodiment, and the guide image displayed on the LCOS 30f on the head-up display device 40 as in the first embodiment. A function of rotating the display position of I from the steady position P by the angle calculated by the calculation unit 30b in the direction opposite to the rotation detected by the calculation unit 30b may be further provided.

INDUSTRIAL APPLICABILITY The present invention is useful as an image display system that includes a head-up display device that is provided on a helmet, generates a display image, and displays the generated display image at a steady position visible to a helmet wearer.

1 Navigation system (image display system)
20 helmet
35 detector 36 inclination sensor (detector)
40 Head-up display device I Guide image (display image)
P steady position

Claims (4)

An image display system equipped with a head-up display device, which is provided on a helmet, generates a display image, and displays the generated display image at a steady position visible to a helmet wearer,
The helmet further includes a detection unit for detecting rotation in a left-right direction when viewed from a helmet wearer,
When the rotation is detected by the detection unit, the head-up display device emits display light so as to rotate the display position of the display image from the steady position in a direction opposite to the rotation detected by the detection unit. An image display system characterized by performing displacement processing for emitting. The image display system according to claim 1,
The detection unit acquires the detected rotation angle,
The displacement processing rotates the display position of the display image from the steady position in the direction opposite to the rotation detected by the detection unit by the angle acquired by the detection unit. Display system. An image display system equipped with a head-up display device, which is provided on a helmet, generates a display image, and displays the generated display image at a steady position visible to a helmet wearer,
Further comprising a detection unit for detecting the inclination of the helmet in the left-right direction when viewed from the helmet wearer,
When the inclination is detected by the detector, the head-up display device emits display light so as to incline the display position of the display image from the steady position in a direction opposite to the inclination detected by the detector. An image display system characterized by performing displacement processing for emitting. The image display system according to claim 3,
The detection unit acquires the detected angle of inclination,
An image characterized in that the displacement process tilts the display position of the display image from the steady position in the direction opposite to the tilt detected by the detection unit by the angle acquired by the detection unit. Display system.

Images