JPH09179061A - Head mounted type video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a fastening force level of head mounting and fixing operation easily adjustable by providing a spacing adjustment means to adjust the spacing between a forehead contact part and an occiput contact part. SOLUTION: By loosening a mounting screw 28 by turning a rotary knob 29 first, both a fore frame 6 and an aft frame 7 are turned to open in the fore and aft directions by an elastic energizing force of a rotary spring 26, and a distance between a fore pad 10 and an aft pad 35 is widen, and this makes it possible to mount a frame 2 on the head of an observer 4. Next, by mounting a HMD 1 on the occiput of the head of the observer 4 and properly turning a top adjusting screw 13, an image display device part 3 is adjusted so that the eyes of the observer 4 can see an entire screen. Further, when the mounting screw 28 is turned in the direction that closes the fore and aft frames 6, 7 while contracting the rotary spring 26 with the turning knob, the fore pad 10 and the aft pad 35 hold the fore pad head part and the right and left sides of the occiput to fit the device in a optimal state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mounts a display device in which a small image display device and an observation optical system are combined on a head,
The present invention relates to a head-mounted image display device that attempts to observe an image immediately before the eyes.

[0002]

2. Description of the Related Art A head-mounted image display device of this type is HM
It is abbreviated as D, and usually, a display device in which a small image display element and an observation optical system are combined is attached to the head, and the displayed image is observed just before the eyes. For this reason, it is extremely important that the display device is mounted so that it comes to the position immediately in front of the eye, and that even if the head is shaken a little, the display image does not shift with respect to the eye and can be observed reliably. That's right.

As a method for mounting the HMD, Japanese Patent Laid-Open No. 6-28
Japanese Patent No. 9318 discloses a frame-type structure (FMD) of spectacles. This type can be easily mounted if the image display section is lightweight. However, in a high-quality image display device, the number of pixels of the display element increases, and accordingly, the entire image display device becomes large and heavy, and the entire device cannot be supported. Therefore, usually, a belt type mounting method as disclosed in Japanese Patent Laid-Open No. 6-233329 is often used.

[0004]

By the way, since there are individual differences in the size, shape, and eye position of the observer's head, when the image display device is attached to the observer's head by the above-mentioned belt method. There is no need for anyone to wear it without any adjustment without any problems. On the other hand, the HMD is generally of a type that is fastened with a belt on the back of the head because it is expensive and needs to be attached so that it can be observed by anyone because it is used by an unspecified number of people. Has become.

14 and 15 show an example of an HMD of the type in which the observer's occipital region is fastened with a belt. The frame 91 is provided with an image display portion 92, a front pad 93 and an upper pad 94, and belts 96 attached with rear pads 95 are connected to the left and right rear ends of the frame 91, respectively. The left and right belts 96 are fastened by a buckle 97 by adjusting the tightening amount.

Such a method of tightening the belt on the back of the head requires both hands when tightening the belt, and when the weight balance before and after the MD is not balanced,
Align the image display unit with the position of the observer's eyes when wearing,
In order to maintain the state, it was necessary to hold the HMD with both hands. This kind of wearing operation is very unstable,
The position of the image may shift with respect to the eye during tightening. Also, if you shake your head after tightening, the image may be easily displaced, so the amount of tightening force on the head will be large, and the observer will feel a lot of discomfort that the head is tightened. , It hindered long-term observation.

Further, it is difficult to finely adjust the force when tightening the belt, and especially in an operating room in a medical field, the operator cannot touch the Η MD with his own hand, and it is necessary for another person to wear it. The degree of tightening force is difficult for others to understand, and it is extremely difficult to finely adjust the tightening force.

The present invention has been made in view of the above-mentioned problems, and the purpose thereof is to perform an operation of mounting and fixing to the head automatically or to perform manually with one hand or one finger. Even in the case of doing so, it is an object of the present invention to provide a head-mounted image display device capable of easily adjusting the level of the tightening force.

[0009]

According to the present invention, an image display device portion installed on the front side of an observer's head, a forehead contact portion which contacts the observer's forehead, and an observer's crown are contacted. The crown contact part and the occipital region contact part that contacts the rear part of the observer's head are attached to a frame installed from the frontal part of the observer's head to the occipital region, and attached to the observer's head. In this case, a head mounting device characterized in that a space adjusting means for adjusting a space between the forehead contact portion and the occipital region contact portion is provided, and the space adjusting means tightens and fixes the space on the observer's head. It is a video display device.

The gap adjusting means is a small electric motor that responds to switch operation, and adjusts the gap between the forehead contact portion and the occipital region contact portion by a motor drive system or rotates a rotary knob to rotate the forehead portion. The distance between the contact portion and the occipital region contact portion is adjusted manually.

When the distance between the forehead contact portion and the occipital region contact portion is adjusted, a switch is operated in the case of the motor drive method, and a rotary knob is operated as described above in the case of the manual method, and the distance is set. When is narrow, move the occipital region contact portion to widen the space between the forehead contact portion and the occipital region contact portion, cover the device from above and put it on the crown, and load the entire device at the crown. receive.

There is provided switching means for selecting by a switch an automatic mounting method in which the operation of the interval adjusting means is automatically started by a motor drive method and a manual mounting method in which the operation is started manually. In the case of the automatic system, the mounting automatic system is selected by the switching means, the device is placed on the top of the head, the pressure sensor detects that the weight of the entire device is applied to the top of the device, and the electric motor is automatically driven. Then, the rear pad is moved to narrow the gap between the forehead contact portion and the occipital region contact portion to fix the image display device to the head. In the case of the manual method, the mounting manual method is selected by the switching means, the motor drive switch is pressed to drive the electric motor, and the rear pad is moved to narrow the gap between the forehead contact portion and the occipital region contact portion. And fix it to the head. In addition, in the case of removal, in both types, the motor drive switch is pressed again to drive the electric motor, and the rear pad is retracted to widen the gap with the front pad. Further, the fixing strength is adjusted so that the image display apparatus can be properly fixed with the strength that does not cause the viewer's most fatigue.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. (Structure) A head-mounted image display device (hereinafter referred to as HMD) 1 according to the first embodiment has an image display device section 3 attached to a front end of a frame 2, and the frame 2 is an observer. 4 is arranged from the frontal region to the occipital region. The frame 2 is divided into two bodies, a front frame 6 located on the front side and a rear frame 7 located on the rear side, and the front frame 6 and the rear frame 7 are connected as described later.

At the front end of the front frame 6, there is attached a front pad receiving portion 8 which extends laterally with a width of an angle of about 120 ° at a position near the forehead of the observer 4, and further the above-mentioned image display. A mounting portion for mounting the device unit 3 is provided. The image display device section 3 incorporates a device in which a small image display element and an observation optical system are combined, so that the displayed image can be observed immediately before the eyes of the observer 4.

A front pad seat 9 attached to the front end of the front frame 6 is attached to the front pad receiving portion 8.
A front pad (forehead contact portion) 10 made of a soft and slightly thick sponge-like material is attached to the.

An upper elongated hole 11 which is long in the front-rear direction is formed in an intermediate portion located at an upper portion in the substantially center of the front frame 6. An upper adjusting screw 13 that is screwed into an upper screw receiving member 12 is attached to the upper slot 11 through the upper elongated hole 11.
The upper adjusting screw 13 is integrally formed with the upper screw receiving member 12,
The upper elongated hole 11 can be moved in the longitudinal direction in the longitudinal direction, and the mounting position can be adjusted in the longitudinal direction within the range of the upper elongated hole 11. A rotary operation knob 14 is formed on the head of the upper adjusting screw 13. An upper pad seat 16 is rotatably attached to the lower end of the upper adjusting screw 13 by a set screw 15.

A disc-shaped upper pad (top contact portion) 17 made of a soft and slightly thick sponge material is attached to the upper pad seat 16, and the upper pad 17 is mounted when the HMD 1 is mounted. At, the observer 4 hits the top of the head and receives the main weight of HMD1 at the top of the head. Also,
The upper pad 17 is formed in a hollow disc shape having a large radius so that the contact area is widely dispersed as much as possible in order to prevent partial weight concentration at the top of the head.

A plurality of pairs of left and right bearing holes 21 provided in the left and right wall portions of the front frame 6 are provided above the rear portion of the front frame 6, and here, three pairs of bearing holes 21 are arranged substantially vertically apart from each other. It is provided. A pair of left and right bearing holes 21 of the central group is pivotally supported by a pivot shaft 22 over both the left and right sides. The pivot body 22 includes a cylinder 23. A shaft pin 24 is fitted in each of both ends of the cylinder 23 so as to be movable in the thrust direction. The shaft pins 24 at both ends are loaded in the cylinder 23 and are urged in a direction of protruding left and right by a compression spring 25 installed between the shaft pins 24.

Each shaft pin 24 has a step with a small diameter at its both ends, and each end has a corresponding bearing hole 2
1 are respectively fitted and pivotally supported. At this time, the step of each shaft pin 24 and both ends of the cylinder 23 are brought into contact with the left and right wall portions of the front frame 6, respectively, and the position is regulated. If the shaft pin 24 is pushed in, the pivot shaft body 22 can be removed or attached to the front frame 6.

The upper end portion of the rear frame 7 is fixedly attached to the cylinder 23 of the pivot body 22 via the arm 30. The rear frame 7 is attached to the rear end of the front frame 6 via the pivot shaft 22 so as to be vertically rotatable. Further, a coil-shaped rotary spring 26 is gently wound around the outer circumference of the cylinder 23 of the pivot shaft body 22.

One end of the rotary spring 26 is locked to the front frame 6, and the other end of the rotary spring 26 is locked to the rear frame 7.
The urging force of the rotary spring 26 constitutes means for elastically urging the rear frame 7 with respect to the front frame 6 in a direction in which the rear frame 7 is separated from the occipital region of the observer 4 and opened.

A mounting screw receiver 2 is provided at the rear of the front frame 2.
7 is provided, and a mounting screw 28 is screwed into the screw receiver 27. The head of the mounting screw 28 forms a rotary knob 29 for rotary operation. The tip of the mounting screw 28 on the screwing side abuts on the upper rear surface of the rear frame 7.
Then, the mounting screw 2 that abuts on the upper rear surface of the rear frame 7
According to the forward / backward movement position of 8, the space for adjusting the distance between the forehead contact portion and the occipital region contact portion, which will be described later, is configured by regulating the rotational position of the rear frame 7 in the front-back direction. .

At the lower end of the rear frame 7, approximately 90
It has two rear pad receiving portions 31 that are divided into left and right at an angle of °, and a pair of rear elongated holes 32 that are long in the left and right direction are parallel to each lateral end of each rear pad receiving portion 31. It is provided. In this rear long hole 32, a horizontal mounting screw 3
3, the rear pad seat 34 is attached so that the lateral position can be adjusted within the length range of the rear elongated hole 32. A rear pad (occipital region contact portion) 35 having a soft and slightly thick sponge material is attached to the left and right ends of each rear pad seat 34.

Further, in this embodiment, the rear circuit member 36, which is a part of the video circuit of the HMD 1, is provided at the lower end of the rear frame 7 in order to balance the weight of the front and rear of the HMD 1.
Are housed and attached to the rear circuit case 38. That is, at least a part of the video circuit is attached to the rear side of the frame 2 to form a balance means for balancing the front-rear weight. Of course, this HMD1 has a left-right balance.

(Operation) When the HMD 1 is mounted on the head of the observer 4, the rotary knob 29 is first turned to mount the mounting screw 2
When 8 is loosened, the elastic urging force of the rotary spring 26 causes both the front frame 6 and the rear frame 7 to rotate in the front-back direction, so that the space between the front pad 10 and the rear pad 35 widens and the frame 2 is viewed by the observer 4. It becomes possible to mount the frame 2 on the head of the observer 4.

Next, the HMD 1 is placed on the top of the observer 4's head from above and the upper adjusting screw 13 is appropriately rotated so that the image display device section 3 can see the entire screen to the observer's 4 eyes. adjust.

Further, when the mounting screw 28 is rotated in the direction in which the front frame 6 and the rear frame 7 are closed while the rotary spring 26 is being squeezed by the rotary knob 29, the interval between the front pad 10 and the rear pad 35 is reduced, and the front pad is closed. 10 and back putt 3
5 presses the forehead part of the head of the observer 4 and the left and right occipital regions, and the HMD 1 is fixed to the head of the observer 4 in an optimum state.

(Effect) When the image display device (HMD) 1 is mounted and fixed on the head of the observer 4, the adjustment operation is only required to rotate the rotary knob 29, and one-handed operation is possible.
Moreover, the level of tightening force can be easily adjusted. Since the rear circuit member 36 is provided at the rear of the HMD 1 to balance the entire device, the device body, which is originally not balanced in the front-rear direction and the left-right direction, does not particularly tilt forward and backward. When the device is adjusted up and down to match the position with the eyes, or when the device is mounted and fixed on the head by the rotary knob 29, the operation can be easily performed without stabilizing the device by hand.

Since the front, rear, left and right are well balanced, it is not necessary to apply a strong force to the front and rear pads 10, 35, so that the discomfort such as the tightening feeling is extremely small and the device can be used for a long time. Becomes Front and rear pads 10,35
Since it is soft and thick, it can handle many head shape differences. Further, since the vertical position of the rear pad 35 can be adjusted, it is possible to cope with many vertical shape differences of the head.

<Second Embodiment> A second embodiment of the present invention will be described with reference to FIGS. 3 and 4. (Structure) In the head-mounted image display device (HMD) 1 according to the second embodiment, the frame 40 is not divided into a plurality of frames,
It is composed of integrated members. An occipital region pressing portion 41 is provided on the rear portion of the member of the frame 40.

The occipital region pressing portion 41 is the frame 4
There is a chassis 42 attached to the member of 0, and the chassis 42 is attached so that the vertical position can be adjusted. A long hole 43 that is long in the vertical direction is formed in a member of the frame 40, and an adjusting screw 44 is attached to the long hole 43 so as to pass therethrough. The adjusting screw 44 is screwed into an adjusting seat 45 provided on the upper portion of the chassis 42.

Since the head of the adjusting screw 44 is formed to have a diameter larger than the width of the long hole 43, the head of the adjusting screw 44 becomes a member of the frame 40 by screwing the adjusting screw 44 into the adjusting seat 45. Abutment is made, and the chassis 42 is sandwiched between the head of the adjusting screw 44 and the adjusting seat 45. By loosening the adjusting screw 44, the chassis 42 can be moved up and down along the long hole 43, and after positioning, the adjusting screw 44 can be tightened to fix the chassis 42. That is, the adjusting screw 44 and the adjusting seat 45 constitute a chassis stopping means and an occipital region contact portion vertical position adjusting means for determining the vertical position thereof.

A worm seat 47 for pivotally supporting a worm gear 46 is attached to the lower portion of the chassis 42. As shown in FIG. 4, a right rear putt lever 48 and a left rear putt lever 49 are rotatably attached to the left and right of the worm gear 46 on separate pivot shafts 50 at an angle of about 90 °. . Worm wheel gears 51 that are coaxial with the center of rotation and mesh with the worm gear 46 are formed at the rotation bases of the right rear pad lever 48 and the left rear pad lever 49, respectively. At the outer end of the worm wheel gear 51, a worm operation rotation knob 52 for rotating the worm wheel gear 51 is provided by being fixed with a screw or the like. And, when the HMD 1 is mounted on the observer's head, it constitutes a gap adjusting means for adjusting the gap between the forehead contact portion and the occipital region contact portion.

Rear pads 53 are attached to the front ends of the right rear pad lever 48 and the left rear pad lever 49, respectively. However, in this case, the attachment seat 54 of the rear pad 53 may be attached to the pad levers 48 and 49 so that the vertical and horizontal positions thereof can be adjusted.

In the present embodiment, the rear portion of the member of the frame 40 is provided with an HM in order to balance the front and rear weight of the entire apparatus.
A rear circuit case 56 accommodating a rear circuit member 55 which is a part of the video circuit of D1 is attached. Since the other relationships are the same as those in the first embodiment described above, the description of the configuration will be omitted.

(Operation) When the rotary knob 52 is rotated, the two worm wheel gears 51 are rotated according to the rotation direction.
Rotate in opposite directions, so the right rear pad lever 48
The left rear pad lever 49 rotates in such a direction that its angle becomes larger or smaller. Therefore, the distance between the left and right rear pads 53 increases or decreases.

Therefore, when mounting the HMD 1 on the head of the observer 4, first, the worm operation rotary knob 52 is rotated in a direction in which the interval between the left and right rear pads 53 is increased to widen the interval. Next, the HMD 1 is placed on the top of the head of the observer 4 from above and the upper adjusting screw 13 is appropriately rotated to adjust the image display device unit 3 so that the observer 4 can see the entire screen.

Next, the worm operating rotary knob 52 is rotated in the direction in which the distance between the left and right rear pads 53 is narrowed to reduce the distance between the front pad 10 and the left and right rear pads 53, respectively.
The HMD 1 is fixed to the head of the observer 4 in an optimum state by pressing the forehead part and the left and right occipital regions.

(Effect) In addition to the effect of the first embodiment, since the vertical position of the rear pad 53 can be adjusted steplessly, many differences in the vertical shape of the head can be dealt with.

<Third Embodiment> A third embodiment of the present invention will be described with reference to FIGS. (Structure) A head-mounted image display device (HMD) 1 according to the first embodiment has an image display device portion 3 attached to a front end of a frame 2, and the frame 2 is a frontal portion of an observer 4. It is arranged from the part to the back of the head. The frame 2 is divided into a front frame 6 located on the front side and a rear frame 7 located on the rear side, and the front frame 6 and the rear frame 7 are rotatably connected as described later.

At the front end of the front frame 6, there is attached a front pad receiving portion 8 which extends laterally with a width of about 120 ° at a position near the forehead of the observer 4, and further the image display It is a mounting portion for mounting the device unit 3.

The image display device section 3 incorporates a device in which a small image display element and an observation optical system are combined so that the displayed image can be observed immediately before the eyes of the observer 4. .

The front pad receiving portion 8 has a front pad seat 9 attached to the front end of the front frame 6, and the front pad seat 9 is made of a soft and slightly thick sponge-like front pad (forehead contact portion). 10 is attached.

An upper elongated hole 11 which is long in the front-rear direction is formed in an intermediate portion located at an upper portion of the front frame 6 substantially at the center thereof. An upper adjusting screw 13 that is screwed into an upper screw receiving member 12 is attached to the upper slot 11 through the upper elongated hole 11.
The upper adjusting screw 13 is integrally formed with the upper screw receiving member 12,
The upper elongated hole 11 can be moved in the longitudinal direction in the longitudinal direction, and the mounting position can be adjusted in the longitudinal direction within the range of the upper elongated hole 11. A rotary operation knob 14 is formed on the head of the upper adjusting screw 13. An upper pad seat 16 is rotatably attached to the lower end of the upper adjusting screw 13 by a set screw 15.

A disk-shaped upper pad (top contact portion) 17 made of a soft and slightly thick sponge-like material is attached to the upper pad seat 16, and the upper pad 17 is observed at the time of mounting. Person 4 hits the top of his head and receives the main weight of HMD 1 at the top of his head. Also, the upper pad 1
In order to prevent partial concentration of weight at the top of the head, 7 is formed in a hollow disk shape having a large radius so that the contact area is widely dispersed as much as possible.

An upper pressure sensor 18 is incorporated below the upper pad seat 16, and the upper pad 17 is attached below the upper pressure sensor 18. The upper pressure sensor 18 receives the main weight of the HMD 1 when it is attached, and constitutes a detection means for detecting that the HMD 1 is sufficiently placed on the crown.

A pair of left and right bearing holes 21 provided in the left and right wall portions is provided above the rear portion of the front frame 6, and a pivot shaft body 22 extends over both of the left and right bearing holes 21. It is supported. The pivot body 22 is the cylinder 2
3, a shaft pin 24 is fitted and housed in each of both ends of the cylinder 23 so as to be movable in the thrust direction. That is, the shaft pins 24 at both ends are loaded in the cylinder 23, respectively, and are biased in the direction of protruding left and right by the compression spring 25 installed between the shaft pins 24.

A step is formed such that the protruding tip end of each shaft pin 24 has a small diameter, and each tip end is fitted into the corresponding bearing hole 21 and is axially supported. At this time, the step of each shaft pin 24 and the cylinder 23
Both ends of each hit the left and right wall surfaces of the front frame 6,
The position is regulated. If the shaft pin 24 is pushed in, the pivot shaft body 22 can be removed or attached to the front frame 6.

A cylinder 23 of the pivot shaft 22 is fixedly attached to the cylinder 23 via an arm 30 which is an upper end portion of the rear frame 7. The rear frame 7 is attached to the rear end of the front frame 6 via the pivot shaft 22 so as to be rotatable in the front-rear direction.

A small electric motor 61 is attached to the front frame 6 at a position diagonally above the bearing hole 21, and a pinion gear 62 is attached to the rotary shaft of the electric motor 61.
Are fixed coaxially.

On the other hand, the rotation base of the arm 30 of the rear frame 7 is coaxial with the rotation center thereof and the pinion gear 6 is provided.
An arm gear 63 that meshes with the 2 is formed. The pinion gear 62 and the arm gear 63 mesh with each other to rotate the rear frame 7 in the front-rear direction about the pivot shaft body 22 as the electric motor 61 rotates.

A long hole 64 which is long in the vertical direction is formed in the member of the rear frame 7, and the adjustment screw 6 is formed in the long hole 64.
5 is attached through it. The adjusting screw 65 is screwed into an adjusting seat 67 provided on the upper portion of the occipital region pressing plate 66. Then, by tightening the adjusting screw 65, the occipital region pressing plate 66 is fixed at the selected vertical position.

That is, the head of the adjusting screw 65 has the long hole 6
Since it is formed with a diameter larger than the width of 4, the adjustment screw 6
By screwing 5 into the adjusting seat 67, the head of the adjusting screw 65 comes into contact with the member of the rear frame 7, and the adjusting screw 65
The occipital region pressing plate 66 is sandwiched between the head of the head and the adjusting seat 67. When the adjusting screw 65 is loosened, the occipital region pressing plate 66 is moved up and down along the elongated hole 64, and after positioning, the adjusting screw 65 is tightened to fix the occipital region pressing plate 66. The adjusting screw 65 and the adjusting seat 67 constitute a stopping means for the occipital region pressing plate 66 and an occipital region contact portion vertical position adjusting means for determining the vertical position thereof.

Below the occipital region pressing plate 66, about 90
It has two rear pad receiving portions 31 that are divided into right and left at an angle of ゜, and a pair of rear long holes 32 that are long in the left and right direction are parallel to each lateral end of each rear pad receiving portion 31. It is provided. In this rear long hole 32, a horizontal mounting screw 3
3, the rear pad seat 34 is attached so that the lateral position can be adjusted within the length range of the rear elongated hole 32. A rear pad (occipital region contact portion) 35 having a soft and slightly thick sponge material is attached to the left and right ends of each rear pad seat 34.

A pressure sensor is incorporated in the rear pad seat 34, and when the HMD 1 is fixed to the observer 4, the strength of the rear pad (occipital region contact portion) 35 that contacts the occipital region of the observer 4 is fixed. To detect.

At the lower end of the occipital region pressing plate 66, the HMD
The rear video circuit member 36, which is at least a part of the video circuit 1, and the motor circuit 37 for driving and controlling the electric motor 61 controlled as described below with reference to FIGS. 8 and 9 are housed in the rear circuit case 38. And attached. Further, as shown in FIG. 7, a first switch A68, a second switch B69, and an adjustment dial 70 are incorporated on the outer surface of the rear circuit case 38. The adjusting dial 70 is for adjusting the strength to be tightened and fixed by a fixing strength adjusting means, which will be described later, for setting the strength to be tightened and fixed to the head.

The first switch A68 is provided with ΗΜD1 on the top of the head.
For selecting operation of a means for automatically driving the electric motor 61 to mount and fix it, or pressing the second switch B69 and then driving the electric motor 61 to mount and fix It is a switch.

The second switch B69 is used when the distance between the front pad (forehead contact portion) 10 and the rear pad (back head contact portion) 35 is narrow, and when the second switch B69 is pressed, the forehead portion is pushed. In the direction of increasing the distance between the contact portion and the occipital region contact portion, and when the distance between the forehead contact portion and the occipital region contact portion is wide, reduce the distance between the forehead contact portion and the occipital region contact portion. A switch for operating the electric motor 61 in the direction.

The adjusting dial 70 is for adjusting the strength of pressing the occipital region of the occipital region contacting the occipital region of the observer 4, and transmits the determined intensity to the motor circuit 37 as a signal. When the strength for pressing the back of the head is set by the adjustment dial 70, the motor circuit 37 keeps the electric motor 61 at a preset strength, or until the load current flowing through the electric motor 61 reaches a constant value by hitting a stopper or the like. It is driven in the direction of narrowing the gap with the occipital region contact portion, and is stopped when the limit is reached. When the pad distance is widened, the pad is driven in a direction to widen the space with the occipital region contact portion until the load current flowing in the electric motor 61 reaches a constant value by hitting a stopper or the like in the spreading direction, and stops when the limit is reached.

By the way, the motor circuit 37 includes the upper pressure sensor 18, the sensor provided on the rear pad seat 34, and the first pressure sensor 18.
The drive of the electric motor 61 is controlled by the signals from the switch A68, the second switch B 69, and the adjustment dial 70. Instead of the signal from the sensor of the rear pad seat 34, the load current applied to the electric motor 61 is changed. It is also possible to detect and control the drive.

In this embodiment, the rear video circuit member 36,
Motor circuit 37, rear circuit case 38, switch A6
8, switch B69, adjustment dial 70, etc.
It is arranged at the rear of the HMD 1 in order to balance the weight of the front and back of the HMD 1, and thereby constitutes a balance means for balancing the HMD 1. Of course, this Η MD1 has a left-right balance.

(Operation) The operation of this embodiment will be described with reference to FIGS. First, the HMD 1 is first connected to the power supply and then the power is turned on. The electric motor 61 operates in a direction to open between the front and rear pads 10 and 35, the open position where the pads 10 and 35 are most opened is detected, and the operation is stopped, and the mounting method is set to automatic mounting. If it is desired that the mounting be performed by the automatic method, the state is left unchanged, and if the mounting is desired by the manual method, the first switch A68 is pressed to select the manual mounting.

Next, the HMD 1 is put on and placed on the head. In the case of automatic mounting, when the weight of the HMD 1 is applied to the top of the head, the upper pressure sensor 18 detects that the HMD 1 is placed, and the electric motor 61 operates in the direction in which the space between the front and rear pads 10 and 35 becomes narrower. The rear pad 35 presses the back of the head. Then, the pressure signal received by the rear pad seat 34 or the load current of the electric motor 61 reaches a constant value, and the electric motor 61 stops. In this case, it is desirable to rotate the upper adjusting screw 13 in advance so that the image display device section 3 can be adjusted so that the entire screen is visible to the eyes.

Next, if the second switch B69 is pressed when the mounting is performed manually, the electric motor 61 operates in such a direction that the space between the front and rear pads 10 and 35 becomes narrower, and the rear pad 35 presses the back of the head. Then, the pressure signal of the rear pad seat 34 or the load current of the electric motor 61 reaches a constant value, and the electric motor 61 stops.

Then, the observer judges the pressing strength, and if the pressing strength is OK, the observation is started as it is. If it is weak, turn the adjustment dial 70 to the strong side (Η) and set a new limit value for the pressing strength.
The electric motor 61 operates in the direction in which 0 and 35 are closed,
Stop at the new limit. Adjustment dial 7 if strong
When 0 is turned to the weak side (L) and a new limit value of the pressing strength is set, the electric motor 61 of the rear pad 35 operates in a direction in which the space between the pads 10 and 35 is opened, reaches the new limit value, and stops.

Then, the observation is started. When the second switch B 69 is pressed to stop the observation, an open / close signal is generated, and the motor circuit 37 determines the current state, that is, the rear pad 35 is not in the open position, and then the pad 35
Operates in the opening direction and stops when the open position is reached. That is, the rear pad 35 is retracted and removed. When re-observing, the HMD 1 is put on again, and when the observation is completed, the power is turned off.

(Effect) Η MD1 is provided with a rear video circuit member 36, a motor circuit 37, a rear circuit case 38, and a first rear circuit case 38 on the rear side.
Since the switch A68, the second switch B69, the adjustment dial 70, etc. are arranged,
Since the front and rear of MD1 are well balanced, when worn on the head, even if the MD1 is placed on the head, it does not tilt and is stable.

When vertically adjusting the image position of the image display device section 3 to the eyes, it is not necessary to hold it by hand so that the tilt MD 1 does not tilt, and the vertical position can be adjusted by the rotary operation knob 14.

Further, since the front and rear pads 10 and 35 do not need to be applied with a strong force due to the well-balanced front and rear, the discomfort such as tightening feeling is extremely small, and the device can be used for a long time. It will be possible.

Since the front pad 10 and the rear pad 35 are soft and made thicker, it is possible to deal with many head shape differences.

In the case of automatic mounting, if the MD 1 is placed on the head while the image display unit 3 is aligned with the eyes,
Since the electric motor automatically operates and is fixedly mounted on the head, the image display device unit 3 may be misaligned with respect to the eyes even if the device is not stabilized by hand like the belt method. Absent.

Even in the case of manual mounting, since the electric motor 61 is actuated to be mounted and fixed to the head by lightly pressing the second switch B 69, no displacement occurs during mounting as in the automatic system. In this case, it goes without saying that the second switch B69 can be pressed after confirming the position of the image display device section 3 with respect to the eyes when the Η MD1 is placed on the head and correcting it if it is misaligned.

Further, since the strength with which the occipital region is pressed at the time of wearing can be adjusted to a level at which the observer 4 does not have a pleasant sensation that the occipital region is tightened, fatigue is small.

Furthermore, since the vertical position of the rear pad 35 can be adjusted, it is possible to cope with many vertical shape differences of the head.

<Fourth Embodiment> A fourth embodiment of the present invention will be described with reference to FIGS. (Structure) In the Η MD1 according to the fourth embodiment, the frame 2 is not divided into a plurality of parts but is formed of an integral member. An occipital region pressing portion 71 is provided on a rear portion of the member of the frame 2.

The occipital region pressing portion 71 is the frame 2
The chassis 72 is attached to the above member, and the chassis 72 is attached so that the vertical position can be adjusted. The member of the frame 2 has a long hole 64 that is long in the vertical direction as described above.
Is formed, and an adjusting screw 65 is attached to the elongated hole 64 so as to pass therethrough. The adjusting screw 65 is the chassis 7
It is screwed into the adjustment seat 67 provided on the upper part of the No. 2.

Since the head portion of the adjusting screw 65 is formed with a diameter larger than the width of the elongated hole 64, the head portion of the adjusting screw 65 becomes a member of the frame 2 by screwing the adjusting screw 65 into the adjusting seat 67. The chassis 72 is abutted, and the chassis 72 is sandwiched between the head of the adjusting screw 65 and the adjusting seat 67. Adjustment screw 6
By loosening 5, the chassis 72 can be moved up and down along the long hole 64, and after positioning, the adjustment screw 65 can be tightened to fix the chassis 72. That is, the adjusting screw 65 and the adjusting seat 67 constitute a chassis stopping means and an occipital region contact portion vertical position adjusting means for determining the vertical position thereof.

On the other hand, a worm seat 74 which pivotally supports a worm gear 73 is attached to the lower portion of the chassis 72. As shown in FIG. 11, right and left rear putt levers 75 and left rear putt levers 76 are pivotally supported by separate pivot shafts 77 on the left and right sides of the worm gear 73, and the respective patte levers are respectively supported.
75 and 76 are arranged at an angle of about 90 ° and are rotatably pivoted. A worm wheel gear 79 coaxially with the worm gear 73 meshes with the worm gear 73 at the rotation bases of the right rear pad lever 75 and the left rear pad lever 76.
Are formed respectively. A worm rack gear 78 for rotating the worm gear 73 is coaxially attached and fixed to the outer end portion of the shaft of the worm gear 73.

Further, an electric motor 80 is arranged above the worm gear 73, and the electric motor 80 is attached to the chassis 72. A motor pinion gear-81 is attached to the tip of the rotating shaft of the electric motor 80. The motor pinion gear 81 and the worm rack gear 78 are in a positional relationship of meshing with each other. Therefore, when the electric motor 80 is activated, the motor pinion gear 81, the worm rack gear 78, the worm gear 73, and the worm wheel gear 79 are used to rear right. The pad lever 75 and the left rear pad lever 76 are simultaneously rotated to the opposite side.

The rear pad seats 34 similar to those in the above-described third embodiment are attached to the front end portions of the right rear pad lever 75 and the left rear pad lever 76, respectively. Similarly, also in this embodiment, the rear circuit member 36, the motor circuit 37,
A rear circuit case 38, a first switch A68, a second switch B69 and an adjustment dial 70 are provided.
This unit is arranged behind the Η MD1 in order to balance the weight before and after the Η MD1, and constitutes a balance means. Note that other relationships are related to the third
Since it is the same as the embodiment described above, the description of the configuration will be omitted.

(Operation) When the electric motor 80 is operated, the two worm wheel gears 79 rotate in opposite directions according to the rotation direction thereof, so that the angle between the right rear putt lever 75 and the left rear putt lever 76 is large. It rotates in the direction of becoming smaller or smaller, so that the space between the left and right rear pads 35 becomes wider or narrower.

Therefore, when the HMD 1 is mounted on the head of the observer 4, when the distance between the left and right rear pads 35 is narrow at first, the second switch B69 is pressed to start from the electric motor 80, but a series of operations. After that, the interval widens. The other points are the same as those in the third embodiment, and will be omitted.

(Effect) Since it is the same as the third embodiment, the description thereof will be omitted.

<Fifth Embodiment> A fifth embodiment of the present invention will be described with reference to FIGS. (Structure) Head-mounted HMD1 according to the fifth embodiment
Then, the left and right rear pad levers are to be independently rotated.

Also in this embodiment, the occipital region pressing portion 7
1 is a chassis 72, a right rear putt lever 75, a left rear putt lever 76, a rear putt seat 34, a rear putt 35 provided on the left and right rear putt levers 75 and 76, and an adjusting seat 6.
7 and a rear circuit case 38, the right rear pad lever 75 is rotated by a right electric motor R83, and the left rear pad lever 76 is a left motor L.
It is adapted to be rotated by 84.

A right pinion gear is attached to the rotary shaft of the right electric motor R83, and a left pinion gear 86 is attached to the rotary shaft of the left electric motor L84.
The left and right rear pad levers 75 and 76 are rotatably attached to different pivot shafts 87 within a certain range. Further, a lever gear 88 concentric with the center of rotation is formed on the outer peripheral portion of the center of rotation of each rear pad lever 75, 76. Each lever gear 88 meshes with the corresponding right side pinion gear pivotally supported by the right side electric motor R83 and the left side electric motor L84, and the left side pinion gear 86 attached to the rotary shaft of the left side electric motor L84.

A rear circuit case 38 is attached to the rear side of the occipital region pressing portion 71, and the rear image circuit member 3 is provided therein.
6. The motor circuit 37 is housed, and the switch A68, the switch B 69, and the adjustment dial 70 as described above are provided outside.
Is installed.

The motor circuit 37 detects the pressure signal from the sensor of the left and right rear pad seats 34 or the load flowing to the right electric motor-R83 and the left electric motor L84 to drive the left and right electric motors 83 and 84, respectively. It is controlled independently. Others are the same as those of the third and fourth embodiments described above, and thus detailed description thereof will be omitted.

(Operation) The main operation is almost the same as in the third and fourth embodiments, and the detailed description of the same parts will be omitted.
The difference is that the right rear pad lever 75 and the left rear pad lever 76 operate independently by meshing with the pinion gears 86 attached to the rotating shafts of the electric motors R83 and L84, respectively. Pressure sensor for pad seat 34, electric motor R
The operation is ended by the load current of 83 or the electric motor L84.

(Effect) In the fifth embodiment, since the drive of both rear pad levers 75 and 76 is independent, it is possible to suppress the difference in the shape of the left and right heads with the same amount of force.
The other points are the same as those in the third and fourth embodiments described above, and will be omitted.

[Additional Notes] 1. An image display unit installed on the front side of the observer's head,
The forehead part of the observer's head, which is the forehead contact part that contacts the observer's forehead, the crown contact part that contacts the observer's crown, and the occipital contact part that contacts the observer's head To a frame installed over the occipital region of the occipital region, and electrically adjusting the interval between the forehead contact part and the occipital part contact part when the device is attached to the observer's head. A head-mounted image display device, characterized in that it is fastened and fixed to the head by a control means for controlling the means.

[0092] 2. A head-mounted image display device according to claim 1, further comprising a balance means for balancing the front-rear weight with respect to the crown contact portion.

3. When the device is placed on the observer's head according to appendix 1, an automatic mounting mode in which the weight of the device is detected and the distance between the forehead contact portion and the occipital region contact portion is electrically adjusted automatically is set. A head-mounted image display device having.

4. The head-mounted image display device according to claim 1, further comprising an up-down position adjusting unit that adjusts an up-down position of the occipital region contact part with respect to the forehead contact part.

5. In the additional item 1, a head having a detection means for stopping an electric motor according to a preset constant in electrically adjusting the distance between the forehead contact portion and the occipital region contact portion. Wearable video display device.

6. In Supplementary Note 5, the head-mounted image display is characterized by having strength adjusting means capable of adjusting the strength for adjusting the distance between the forehead contact portion and the occipital region contact portion by changing the constant. apparatus.

7. The head-mounted image display device according to claim 1, further comprising a left-right independent distance adjusting unit that electrically adjusts the distance between the forehead contact portion and the occipital region contact portion electrically independently.

8. The head-mounted image display device according to claim 1, further comprising a crown contact portion vertical adjustment means in which the crown contact portion is connected to the frame so that the vertical position can be adjusted.

9. The head-mounted image display device according to the third aspect, further comprising switching means for switching between the automatic mounting mode, the manual mounting mode, and both modes, and an electric motor start switch.

10. An image display device section installed on the front side of the observer's head, and a forehead contact section that contacts the observer's forehead,
The crown contact portion that comes into contact with the observer's crown and the occipital region contact portion that comes into contact with the back of the observer's head are attached to a frame installed over the observer's forehead and occipital region. When the head is attached to the head, a space adjusting means for adjusting the space between the forehead contact portion and the occipital region contact portion by rotating the rotary knob is provided, and the rotary knob is rotated and tightened and fixed to the head. A characteristic head-mounted video display device. 11. In Supplementary Note 10, the distance adjusting means attaches the occipital region contact portion to a member that rotates forward and backward, and rotates the member forward and backward to thereby adjust the distance between the forehead contact portion and the occipital region contact portion. A head-mounted image display device characterized by adjustment.

12. Item 11. The head-mounted image display apparatus according to Item 11, wherein the occipital region contact portion is attached to the member so that the position of the occipital region contact portion can be adjusted left and right.

13. In Supplementary Note 10, the space adjusting means attaches the occipital region contact portion to a member that rotates left and right,
A head-mounted image display device, characterized in that a space between the forehead contact portion and the occipital region contact portion is adjusted by rotating the member left and right.

14. Item 13. The head-mounted image display device according to Item 13, wherein the occipital region contact portion is attached to the member in a vertically adjustable position.

15. A head-mounted image display device according to claim 10, further comprising a balance means for attaching at least a part of a circuit to the rear side of the frame to balance the front-rear weight.

16. Item 15. The head-mounted image display device according to Item 15, wherein the balance member is a part of the image circuit.

17. Item 10. The head-mounted image display device according to Item 10, further comprising occipital region contact portion vertical position adjusting means in which the occipital region contact portion is connected to the frame so that the vertical position can be adjusted.

18. Item 10. The head-mounted image display apparatus according to Item 10, further comprising a top contact portion vertical position adjusting unit which is connected to the frame so that the top position can be adjusted vertically.

19. In Supplementary Note 10, the frame is divided into two parts, a front frame part, at least a forehead part contact part of the image display device part and the forehead part contact part is attached, and an upper part of the front frame part is provided with the above-mentioned Attaching the head contact portion, attaching the occipital portion contact portion to the rear frame, and attaching balance means formed by attaching at least a part of the circuit when the weight balance between the front and rear is poor, the front frame portion and the A head-mounted image display device comprising a connecting means for connecting to a rear frame portion.

20. In Supplementary Note 10, the frame is divided into two parts, the front frame part is provided with the crown contact part, the rear frame part is provided with the occipital part contact part, and the front frame part and the rear frame part are the same as each other. The top contact portion and the occipital region contact portion are connected to each other by a connecting means that is adjustable so that the front frame portion and the rear frame portion are urged to rotate and open. ,
Further, a head-mounted image display is provided which is provided with a space adjusting means for adjusting a space between the forehead contact portion and the occipital region contact portion by rotating a rotary knob when the head-mounted image display is mounted on an observer's head. apparatus.

[0110]

As described above, according to the present invention, the adjustment operation for mounting and fixing on the head is simple and the one-handed operation is also possible, and the level of the tightening force is easily adjusted. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of an HMD according to a first embodiment.

FIG. 2 is a top view of the HMD of the first embodiment.

FIG. 3 is a side view of the HMD according to the second embodiment.

FIG. 4 is a top view of the HMD according to the second embodiment.

FIG. 5 is a side view of an Η MD according to a third embodiment.

FIG. 6 is a top view of an Η MD according to a third embodiment.

FIG. 7 is a rear view of the Η MD according to the third embodiment.

FIG. 8 is an operation diagram of the electric motor according to the third embodiment.

FIG. 9 is an operation diagram of the electric motor according to the third embodiment.

FIG. 10 is a side view of the Η MD according to the fourth embodiment.

FIG. 11 is a top view of the Η MD according to the fourth embodiment.

FIG. 12 is a side view of the Η MD of the fifth embodiment.

FIG. 13 is a top view of the Η MD according to the fifth embodiment.

FIG. 14 is a side view of a belt tightening type Η MD.

FIG. 15 is a top view of a belt tightening type Η MD.

[Explanation of symbols]

1 ... Head mounted video display device (HMD), 2 ... Frame, 3 ... Image display device section, 4 ... Observer, 6 ... Front frame, 7 ... Rear frame, 8 ... Front pad receiving section, 10 ... Front pad (Forehead part contact part), 11 ... Upper long hole, 13 ... Upper adjustment screw, 14 ... Rotation operation knob, 17 ... Upper pad (crown part contact part), 18 ... Upper pressure sensor, 21 ... Bearing hole, 22
... Pivot body, 23 ... Cylinder, 24 ... Shaft pin, 25 ... Compression spring, 26 ... Rotation spring, 27 ... Mounting screw receiver, 28
... Mounting screw, 29 ... Rotating knob for rotation operation, 31 ... Rear pad receiving section, 32 ... Rear slot, 33 ... Horizontal mounting screw, 34
... rear pad seat, 35 ... rear pad (occipital region contact portion), 36
... rear circuit member, 40 ... frame, 41 ... occipital region pressing portion, 42 ... chassis, 43 ... long hole, 44 ... adjusting screw, 4
5 ... Adjusting seat, 46 ... Worm gear, 47 ... Worm seat, 48 ... Right rear pad lever, 49 ... Left rear pad lever, 50 ... Pivot shaft, 51 ... Worm wheel gear, 5
2 ... Rotating knob for worm operation, 53 ... Rear pad, 55 ...
Rear circuit member, 56 ... Rear circuit case.

Claims (1)

[Claims] 1. An image display device section installed on the front side of the observer's head, a forehead contact section that contacts the observer's forehead, a crown contact section that contacts the observer's crown, and an observation. The occipital region contacting part that comes into contact with the rear part of the observer's head is attached to a frame installed from the frontal part of the observer's head to the occipital region, and the forehead contacting part when it is attached to the observer's head. A head-mounted image display device, wherein the head-mounted image display device is tightened and fixed to the head by a space adjusting means for adjusting the space between the occipital region contact portion and the occipital region contact portion.