JPH11202796A - Display device mounted on head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the distance between eyeballs and a pad to be always constant and to provide stable feeling without changing a weight moment. SOLUTION: When a person S, who wears the display device, performs an optimum visual line adjustment while viewing a picture, and when the person S has to adjust a display part 11 upward, by moving a forehead pad 19 upward using an adjustment knob 20, the display part 11 can be moved upward the visual line can be highly precisely and easily adjusted to an optimum position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head-mounted display device having a visual axis adjusting mechanism for an image display unit and an eyeball.

[0002]

2. Description of the Related Art Hitherto, a head mounted display device has been commercialized as a portable large screen monitor. FIG. 7 shows a side view of the head-mounted display device. The image display unit 1 is connected to the mounting member 3 by a support member 2 having two hinges 2a and 2b. Is attached. The forehead pad 4 includes a pad 5a, a pad base 5b, and a base 6.

In use, the mounting member 3 is mounted on the head of the observer S, and the pad 5a of the forehead pad 4 contacts the forehead. At this time, visual axis adjustment between the image display unit 1 and the eyeball is performed by two hinges 2a and 2b.

[0004]

However, in the above-mentioned conventional example, one hinge 2b is used for adjusting the height of the visual axis between the image display unit 1 and the eyeball. However, the height between the forehead pad 4 and the display image is adjusted. In the case of the observer S whose visual axis is aligned with a position where the distance approaches, the hinge 2a on the mounting member 3 side moves as a support point, and the image display unit 1 separates from the eyeball and the two-dot chain line position 1 '. I will come. As a result, the weight moment of the image display unit 1 increases, giving the observer S a feeling of weight, and giving a feeling of fatigue or the like when used for a long time.

In order to adjust the visual axis height suitable for each observer S when one display device is used by a plurality of observers S, the visual axis height must be adjusted each time. In addition, it is inconvenient to immediately observe the video. Further, observer S
However, there is also a problem that the visual axis height adjustment is easily shifted when some external force or the like is applied even by one person.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a head-mounted display device in which a distance between an eyeball and a forehead pad is always constant and a stable wearing feeling is obtained without changing a weight moment.

[0007]

In order to achieve the above object, a head mounted display according to the present invention comprises a display unit having a display element and optical means for enlarging and displaying the display element; A head-mounted display device having mounting means mounted on the front surface of the wearer's head, wherein the mounting means has a mounting pad that abuts on the forehead of the wearer in at least a mounted state, and the mounting pad is provided on the display unit. , Is movable in the height direction, and the contact position between the mounting pad and the wearer's forehead can be adjusted.

A head-mounted display device according to the present invention provides a display unit having a display element and an optical unit for enlarging and displaying the display element, and a mounting unit for mounting the display unit on the front of the head of the wearer. Wherein the mounting means has a mounting frame that supports the display unit, and a mounting pad that is supported by the mounting frame and abuts on the forehead of the wearer in at least the mounted state. The mounting pad is movable in a height direction with respect to the display unit, and a contact position between the mounting pad and a wearer's forehead can be adjusted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. 1 to 5 show a first embodiment. FIG. 1 is a sectional view before visual axis adjustment, FIG. 2 is a front view thereof, FIG. 3 is a front view in the middle of visual axis adjustment, and FIG. FIG. 5 shows a front sectional view of a later sectional view. A prism 12 including a total reflection mirror, an image display unit 13, an illumination unit 14, and an electric circuit board 15 are built in a display unit 11 of the head mounted display. The electric circuit board 15 is connected to the image display unit 13 and the illumination unit 14 via a wire harness or a flexible cable. The mounting frame 16 supporting the display unit 11 is formed of a material having elasticity, such as a metal or a synthetic resin. When a metal is used, the display unit 11 can radiate heat. Display 1
1 is held by a hinge 17 and connected to a mounting frame 16 so as to be able to rotate up and down.

A base 18 is attached to the mounting frame 16, and the base 18 is fixed by screws, adhesive or welding. When the mounting frame 16 is a molded product made of a synthetic resin material, the mounting frame 16 and the base 18 can be integrally formed. The base 18 has a frame shape and is provided with a plurality of concave and convex portions on the inner side. Further, in the vicinity of the concave and convex portions of the base 18, marks serving as markers, for example, numerals 1, 2, 3,. , B,
C or the like may be printed or stamped.

A forehead pad 19 is fixed to the base 18. The forehead pad 19 is a pad 19a made of a material having elasticity, for example, a material such as rubber or foam sponge.
And a pad base 19b.
a and the pad base 19b are attached with an adhesive or a double-sided tape. The pad base 19b has two projections 19c that match the projections and depressions inside the base 18, and is engaged with and held by the projections and depressions of the base 18. In addition, two adjustment knobs 20 are provided near the convex portion of the base 18, and when the forehead pad 19 is moved, an external force is applied to the adjustment knobs 20 in a direction approaching each other, as shown in FIG. From the uneven portion of the base 18 to the pad base 19b
The convex portion 19c of the base 18 moves so as to be able to engage with an arbitrary concave and convex portion of the base 18 as shown in FIGS.

When the observer S adjusts the image display unit to the upward visual axis after mounting the display device, for example, the forehead pat 1
By moving the display 9 upward with respect to the base 18, the display unit 11 can be moved upward to perform adjustment.
The image displayed on the image display unit 13 is illuminated by the illumination unit 14, and the image is displayed on the prism 1 including the total reflection mirror.
2, the enlarged virtual image reaches the observer's eye E, and the observer S can visually recognize the enlarged image with the optimal visual axis.

FIG. 6 is a perspective view of a second embodiment, and FIG.
In the embodiment, the forehead pad 19 is configured to slide with respect to the display unit 11. However, in this embodiment, the forehead pad is separated into two parts, and the forehead pad 19 is vertically rotated between the display part and the forehead pad. Is to be changed.

The display unit 21 incorporates a backlight, a liquid crystal panel, a display circuit, and optical means.
Is mounted via a support member 23. Display 2
The output 1 is connected to a signal source such as a video tape deck or a personal computer (not shown) via a cable 24, and the cable 24 is fixed to the mounting frame 22 by a hook 25. The mounting frame 22 is formed by bending a bar of titanium, for example, and has a shape substantially along the front surface of the wearer's head, and a support member 23 made of synthetic resin or titanium is screwed or the like at substantially the center. Fixed. Further, first and second hinges 26 and 27 are attached to both ends of the mounting frame 22 by brazing, swaging, or the like.

The support member 23 has first and second rotating shafts 23.
a, 23b are provided, and the first rotation shaft 23a is
1 is rotatably supported in the front-rear direction by a predetermined frictional force. The second rotating shaft 23b rotatably supports the first and second forehead pads 28, 29 in a predetermined angle range in a vertical direction via rotating shafts 28a, 29a. The first and second rotation shafts 28a and 29a can rotate in a plane substantially perpendicular to the first and second forehead pads 28 and 29, respectively, with respect to the visual axis. It is supported to be selectively determined by

The other ends of the hinges 26 and 27 are connected to first and second temples 30 and 31 made of, for example, a stainless alloy, titanium, a titanium alloy, or a superelastic alloy. Mounting frame 2 by hinges 26 and 27
2 can be rotated within a predetermined angle range. Further, first and second occipital region mounting pads 32, 33 are attached to the other ends of the temples 30, 31, respectively.

The first and second hinges 26 and 27 are respectively provided on first and second temples 30 and 30 on the extension of the mounting frame 22.
31 at the position where the end face of the mounting frame 22 is located.
The first and second temples 30 and 31 are attached at positions where the end faces of the temples 30 and 31 are in contact with each other.
2, it does not open outward than its extension and can be folded inside.

With such a configuration, the display unit 21 can be easily worn like eyeglasses. When the user feels that the visual axis does not coincide with the height of the display unit 21 when the wearer wears the display unit 21, 1. By selecting the rotation position of the second forehead pad 28, 29 at an appropriate position, the forehead pad 2
8 and 29 can change the vertical position where they contact the forehead to correspond to the shape of the face or head of an individual. As described above, after the display unit 21 is adjusted to the optimum position, the display unit 21 displays an image based on an electric signal from a video signal generating unit such as a video tape deck (not shown). You can see the video.

[0019]

As described above, the head-mounted display device according to the present invention does not move the display unit when the wearer adjusts the visual axis between the image display unit and the eyeball during use. ,
Since the mounting pad can be moved up and down, the visual axis can be adjusted easily while observing the image, and the display unit does not move in the front-back direction with respect to the wearer. The distance between the eyeball and the mounting means is always constant, and a stable mounting feeling can be obtained without a change in the weight moment. Also, since the visual axis adjustment unit can be configured with a small number of parts, the number of assembly steps can be reduced and the weight can be reduced.
The optimal visual axis adjustment position can be maintained over a long period of time by simple adjustment for the wearer.

Further, the head-mounted display device according to the present invention, when used by a plurality of wearers, does not require that each wearer adjusts the display unit to a position optimal for his / her eyes. The display unit can be easily readjusted to the optimum adjustment position for the eyes.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment before visual axis adjustment.

FIG. 2 is a front view.

FIG. 3 is a front view at the time of knob adjustment.

FIG. 4 is a sectional view after visual axis adjustment.

FIG. 5 is a front view.

FIG. 6 is a perspective view of a second embodiment.

FIG. 7 is a side view of a conventional display unit.

[Explanation of symbols]

 11, 21 display part 12 prism 13 display means 14 lighting means 16, 22 mounting frame 15 electric circuit board 19, 28, 29 forehead pad 23 support member 30, 31 vine

Claims (6)

[Claims] 1. A head mounted display device comprising: a display unit having a display element and an optical unit for enlarging and displaying the display element; and a mounting unit for mounting the display unit on a front surface of a head of a wearer. The mounting means has a mounting pad that contacts the forehead of the wearer at least in the mounted state, the mounting pad is movable in the height direction with respect to the display unit, and a contact position between the mounting pad and the forehead of the wearer is determined. A head-mounted display device which is adjustable. 2. The head-mounted display device according to claim 1, wherein the mounting pad is slidable in a vertical direction. 3. The mounting pad comprises first and second pads, and the first and second pads are rotatable in a plane substantially perpendicular to the direction of the line of sight of the wearer. The head-mounted display device according to claim 1, wherein a contact position between the mounting pad and the wearer's forehead can be adjusted by making a selection. 4. A head-mounted display device comprising: a display unit having a display element and an optical unit for enlarging and displaying the display element; and a mounting unit for mounting the display unit on a front surface of a head of a wearer. The mounting means has a mounting frame that supports the display unit, and a mounting pad that is supported by the mounting frame and abuts on the forehead of the wearer in at least the mounted state, and the mounting pad is positioned in a height direction with respect to the display unit. To be movable,
A head-mounted display device, wherein a contact position between the mounting pad and a wearer's forehead can be adjusted. 5. The head mounted display according to claim 4, wherein the mounting pad is slidable in a vertical direction. 6. The mounting pad includes first and second pads, and the first and second pads are rotatable in a plane substantially perpendicular to the direction of the line of sight of the wearer. The head-mounted display device according to claim 4, wherein the contact position between the wearing pad and the wearer's forehead can be adjusted by selecting (1).