JPH11119148A - Optical visual sense device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize an optical visual sense device and lighten the weight. SOLUTION: When a forehead pad part 12 is rotated in an arrow (b) direction, a rotation range is restricted by matually abutting the prescribed parts of the rear face of a front frame 11 and the front face of a pad cover 20 a contact surface S and when the pad part 12 is rotated in an arrow (a) direction, the rotation range is restricted by abutting a rib 11d of the front frame 11 anda rotation preventing rib 20f of the cover 20 so that it is unnecessary to additionally provide a member for supporting the pad part 12 or restricting the rotation range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical visual device for viewing an image by looking at a display located in front of a face, for example, in a state of being mounted on a head.

[0002]

2. Description of the Related Art In recent years, a pair of left and right color liquid crystal displays (hereinafter referred to as LCD (Liquid Crysta
l)), a so-called head-mounted display device in which the image displayed on the head is magnified and viewed through an optical system consisting of a pair of eyepieces, etc. Is becoming popular.

In such a head-mounted display device, a display unit provided for a user to actually view an image includes a backlight, a pair of transmissive LCDs illuminated by the backlight, and a pair of LCDs. It is provided with a reflector for reflecting the image displayed on the LCD to the pair of eyepieces, and the image displayed on the pair of LCDs is enlarged by the pair of eyepieces by irradiating the backlight. The projection is performed on the retinas of the left and right eyes of the user. This allows the user to view the video as if looking at a large screen several meters away.

FIG. 6 is a perspective view showing the appearance of a conventional head mounted display device. The head-mounted display device 1A shown in FIG. 1 includes a display unit 200, which is a part for the user to view an image, and a mounting unit 300 for mounting the head-mounted display device 1A on the user's head. The display unit 200 and the mounting unit 300 are integrated by being connected by the connecting unit 4, and when the head mounted display device 1A is mounted on the head,
The display unit 200 is supported at a position corresponding to both eyes on the front part of the user's face.

[0005] Inside the display unit 200, there are provided a display device including a color transmissive LCD and a backlight, an optical system including a lens and a half mirror, a circuit system for driving the display device, and the like. .

[0006] In the mounting section 300, first, a front frame 31 which is located on the front side of the head when mounted is provided. The center lower part of the front frame 31 is a connecting portion 4
A forehead pad portion 37 is provided at the upper center thereof for contacting the forehead of the user when worn. Both ends of the front frame 31 are connected to the side frame 32 via hinges 31a, 31a. The upper side of the side frame 32 supports both ends of the parietal pad 35 via an elastic belt 36, and is provided with length adjusters 34, 34 at both ends thereof. Top pad 3
Reference numeral 5 denotes a portion that supports the head mounted display device 1A by contacting the top of the user's head when worn, and the length thereof is adjusted by the elastic belts 36 at both ends according to the size of the user's head. It is possible. The length adjusting portions 34, 34 are portions that connect the rear belt 33 and the side frames 32, 32 while having a mechanism capable of adjusting the length, and the length adjusting portions 34, 3
By moving 4, the size of the head circumference including the front frame 31, the side frames 32, 32, and the belt 33 can be adjusted.

The forehead pad portion 37 provided as shown in FIG. 6 is configured as shown in the sectional views of FIGS. 7 (a), 7 (b) and 7 (c). Here, FIGS. 7 (a) and 7 (b)
(C) shows the CC view in FIG. 6 by a cross section.

For example, as shown in FIG. 7A, the forehead pad section 37 mainly includes a pad support block 100, a pad cover 101, and a pad 102. As can be seen from FIG. 6, the pad support block 100 is integrally fixed and attached to the central upper surface of the housing of the front frame 31 so that the pad support block 100 is positioned above the center of the main body of the front frame 31. Have been. The pad cover 101 is a housing part for holding a pad 102 described later. The pad cover 101 is rotatably supported on the back side of the pad support block 100 by being connected by a rotating shaft 103. The pad 102 is formed with a cushion material having elasticity, and is a portion that comes into contact with the user's forehead when the head mounted display device 1A is properly mounted on the user's head. The pad 102 is integrally attached to the back side of the pad cover 101 as shown.

Here, a torsion coil spring 104 is attached to the rotating shaft 103, and the pad cover 101 is moved by the action of the torsion coil spring 104 as shown in FIG.
(A) is urged in the rotation direction indicated by the arrow b. When no force against the urging force in the rotational direction indicated by the arrow b is applied to the pad cover 101 to which the pad 102 is attached, FIG.
As shown in a broken line D in FIG.
The lower portion of the front face of the pad 01 is brought into contact with the base of the pad support block 100, whereby the rotation of the pad cover 101 in the rotation direction indicated by the arrow b is restricted.

When the pad cover 101 is rotated in the direction indicated by the arrow a against the urging force of the torsion coil spring 104, the torsion coil spring 104 and its mounting site are destroyed unless the rotation range is limited. Will be. Therefore, the pad cover 1 is moved in the direction indicated by the arrow d.
When 01 is rotated, as shown in FIG.
The upper side of the front surface of the pad cover 101 is brought into contact with the rotation preventing portion 100a formed so as to protrude rearward on the upper rear surface of the pad support block 100. Thus, the rotation of the pad cover 101 in the rotation direction indicated by the arrow a is caused by the torsion coil spring 104.
Will be limited within a range not destroyed.

A state in which the head-mounted display device 1A having such a structure is mounted on the user's head is shown in FIG.
As shown in FIG. As shown in this figure, the parietal pad 35 of the mounting unit 300 abuts substantially on the parietal part of the user Y,
The pad 102 is configured to contact the user's forehead on the back side of the forehead pad portion 37. At this time, the pad 10
7 (b) and 7 (c).
In the rotatable range shown in FIG.
02 is kept in a rotational position according to the state in which it is in contact. This state is shown in FIG. FIG. 9 shows only the forehead pad portion 37 applied to the forehead of the user Y. Furthermore, front frame 31, side frame 3
A frame portion around the head composed of the belt 2, 33 and the belt 33 surrounds the user's head. In this manner, by mounting the mounting portion 300 on the head,
The display unit 200 is supported so as to be stably positioned substantially at the position of the eyes in front of the face of the user Y. In this state, the user Y views the image from a pair of left and right windows (not shown) provided on the back side of the display unit 200.

[0012]

By the way, in the head mounted display device 1A as a conventional example described so far, as can be seen from FIG.
It is provided as an independent part so as to be attached to the front frame 31. That is, a structure is adopted in which the pad support block 100 located on the front surface of the pad cover 101 and the pad 102 is connected to the front frame 31 and integrated as the mounting portion 3. For this reason, the strength of the pad support block 100 itself, which is a portion connecting the forehead pad portion 37 to the front frame 31, poses a problem.
Particularly, according to the state shown in FIG.
When the rotation of the pad support block 10 is restricted,
A load is applied to the rotation prevention unit 100a, which is the upper end of the zero. For this reason, the forehead pad portion 37 needs to have a structure for ensuring sufficient strength, and the structure is complicated and large.

[0013]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention has been made so that the mounting strength of the forehead pad can be sufficiently obtained with a structure as simple as possible. An object of the present invention is to promote reduction in size and weight of a mount display device itself.

For this reason, a display unit having an optical visual means for displaying a visual image by providing a display device and a required optical system is provided, and a display image displayed by the optical visual means is made visible. A head mounting means for mounting the optical visual device on the head such that the display unit is disposed in front of the head, the head mounting means having a casing having a predetermined shape. A head-front mounting portion provided so as to be supported in front of the head, a forehead pad portion rotatably provided with respect to the head-front mounting portion and brought into contact with the forehead, and a forehead pad In the position state where the part is in the predetermined rotation limit position,
A rotation range restriction that restricts a rotation angle of the forehead pad portion to be within a predetermined range by causing a predetermined portion of the forehead pad portion to abut against a predetermined portion forming a housing of the front head mounting portion. And means.

According to the above arrangement, the forehead pad portion is directly provided to the front head mounting portion forming the mounting portion of the head mounted display device, and, for example, a housing forming the front head mounting portion. The mechanism for restricting the rotation of the forehead pad is formed by using the part and the housing part forming the forehead pad.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A head mounted display device according to an embodiment of the present invention will be described below with reference to FIGS. FIGS. 1A and 1B are perspective views showing the appearance of a head-mounted display device 1 according to the present embodiment from different directions. As shown in FIG. 1, the head mounted display device 1 includes a display unit 2 and a mounting unit 3. The display unit 2 and the mounting unit 3 are integrated by being connected by a connecting unit 13.

The display unit 2 is a part for a user to view an image. Inside the display unit 2, a display device including a color transmissive LCD and a backlight, an optical system including a lens and a half mirror, and the like are provided. A circuit system and the like for driving the display device are provided.

The mounting section 3 is provided with a front frame 11 which is located on the front side of the head when mounted. In the present embodiment, the forehead pad portion 12 having a structure to be described later is directly attached to the housing of the front frame 11 in a rotatable state within a predetermined range, so that the forehead pad portion 12 The appearance which forms a part of No. 11 is obtained.

A connecting portion 13 is attached to a lower portion of the center of the front frame 11 by a predetermined mechanism (not shown), and the display portion 2 is attached to a lower side of the connecting portion 13 as described above. Also, the front frame 11
Are connected to the side frames 14 and 14 via a mechanism such as a hinge (not shown). The side frames 14, 14 are provided with length adjusting portions 15, 15 at both ends thereof. Belts 16, 16 with occipital pads 17 provided in the middle between the length adjusters 15, 15
Are connected to each other, and have a mechanism capable of adjusting the length of a portion formed by the belt 16-the occipital pad 17-the belt 16.

FIG. 2 shows a state in which the head mounted display device 1 having such a structure is mounted on the head of the user.
Shown in As shown in this figure, the front frame 11, side frames 14, 14, belts 16, 1 as the mounting portion 3
A frame portion around the head, which is composed of the head pad 6 and the back pad 17, surrounds the user's head. Further, at this time, the forehead pad portion 12 rotates within a rotatable range limited by a rotation limiting structure described later, so that the pad 21 as a cushion on the back surface of the forehead pad portion 12 is formed.
Is adjusted so as to match the inclination of the user's forehead, and is kept in a contact state. In this manner, by mounting the mounting unit 3 on the head, the display unit 2
The user Y is supported so as to be stably positioned almost at the position of the eyes in front of the face of the user Y. In this state, the user Y views the image from a pair of left and right windows (not shown) provided on the back side of the display unit 2.

Next, the mounting structure of the forehead pad portion, which is a feature of the present embodiment, will be described with reference to FIGS. FIG. 3A is an exploded perspective view showing an attachment structure of the forehead pad portion 12 to the front frame 11, and FIG.
FIG. 3B is a perspective view of the pad cover 20 which is a member forming the forehead pad section 12 as seen from an arrow e (downward direction) shown in FIG. FIGS. 4A and 4B are a front view and a rear view, respectively, showing the front frame 11 with the forehead pad portion 12 attached thereto in the head mounted display device 1 of the present embodiment.

As shown in these figures, forehead pad 12
Is mainly composed of the pad cover 20 and the pad cover 2
And a pad 21 attached to the back side of the "0". The pad cover 20 forms a housing portion formed of, for example, resin or the like, and the outer shape of the forehead pad portion 12 is formed by fixing and attaching the pad 21 to the back surface of the pad cover 20. Here, the pad cover 20 itself has, for example, a shape as shown in FIGS. 3 and 4, and the right and left edges of a concave portion formed at a substantially central portion thereof have shaft portions 22 a, 22 a of the rotating shafts 22, 22. A shaft through hole 20d through which 22a penetrates is formed. Correspondingly, the forehead pad arrangement space 11e of the front panel 11
(See FIG. 3 (a)).
Bearing holes 11b, 11b for rotatably supporting the two shaft portions 22a, 22a are formed. Also, the front panel 11
Ribs 11c and 11d are formed at the front and rear edges below the forehead pad arrangement space 11e. In the front panel 11 shown in FIGS.
Side frame connecting portions 11a, 11a for connecting to the side frames 14, 14 are formed at both left and right ends thereof. A screw support 20a is formed at the center of the recess formed at the substantially center of the pad cover 20. The screw support 20a has a torsion coil spring 20b.
The end of the torsion coil spring 20b passes through a spring hole 20c formed substantially at the center of the lower edge of the housing of the pad cover 20, and the lower side of the housing of the pad cover 20 It is made to protrude.

In the pad cover 20, FIG.
As shown in (b), a lower flange 20e is formed on the front side of the lower part of the housing, and a rotation preventing rib 20f is formed on the inner wall side of the lower flange 20e.
The function of the rotation preventing rib 20f will be described later.

Here, the pad cover 20 is arranged in the forehead pad arrangement space 11e of the front panel 11 from the direction shown in FIG.
22a are formed in the shaft through holes 20 of the pad cover 20, respectively.
d and the bearing holes 11b, 11b of the front panel 11. In this state, the rotating shafts 22 and 22 are fixedly attached to the inner wall side of the pad cover 20 by screws (not shown) or the like. As a result, the pad cover 20 is supported by the front panel 11 so as to be rotatable within a predetermined range with the attachment portion of the rotating shafts 22 and 22 at the shaft portions 22a and 22a as the rotation center axis. Also,
At this time, in the torsion coil spring 20b, a portion of the pad cover 20 protruding below the housing has, for example, a predetermined portion of an inner wall on the rear side of the housing of the front frame 11 with an urging force. So that the forehead pad 12
In a state where the force for rotating the (pad cover 20) so as to oppose the urging force is not working,
The urging force is applied in the rotation direction indicated by the arrow b in FIG. In this state, FIGS.
By contacting the front surface of the housing of the housing of the pad cover 20 with the back surface of the housing of the front frame 11 at the portion indicated by the contact surface S in (b), the rotation range is limited.

FIGS. 5A, 5B and 5C show a mechanism for limiting the rotation angle of the forehead pad portion 12 combined with the front frame 11 as described above. FIG. 5 (a)
5B is a cross-sectional view of the front frame 11 and the forehead pad portion 12 shown in FIG. 4A, respectively, taken along the line AA. FIG. 5C is a sectional view taken along the line BB in FIG. FIG. In these figures, FIG.
The same reference numerals are given to the same parts as those in FIG. 4 and the description is omitted.

As described above, the forehead pad portion 12 is
Rotation is possible in the direction of arrow a or arrow b in FIG. And the forehead pad section 12
(Pad cover 20) torsion coil spring 20b
In a state in which the force for rotating so as to oppose the urging force is not applied, the forehead pad portion 12 is urged to rotate in the direction of arrow b. Here, assuming that a force for rotating the forehead pad portion 12 in the direction of arrow a shown in FIG. 5A is applied against the urging force, the position of the forehead pad portion 12 with respect to the front frame 11 Figure 5
The result is as shown in FIG. In other words, a state is obtained in which the rear end of the rotation preventing rib 20f formed on the lower flange 20e of the pad cover 20 abuts on the rib 11d formed on the front frame 11, whereby the forehead pad 12 Is restricted so as not to rotate in the direction of arrow a beyond the position shown in FIG. 5B. By restricting the rotation range in the direction of the arrow a, the torsion coil spring 20b is prevented from being broken by being bent more than the allowable range against the spring force.

Further, in a state in which the forehead pad portion 12 is not subjected to a rotating force against the spring force of the torsion coil spring 20b, the housing of the pad cover 20 is the housing of the front frame 11. The rotation range in the direction of the arrow b is limited by contacting the contact surface S at the portion that is the contact surface S.
(A) and FIG. 4 (b). FIG. 5C shows the state at this time when viewed from the side. According to this figure, it can be seen that the lower part of the front surface of the housing of the pad cover 20 is in contact with the back surface of the housing of the front frame 11.

For example, in the head mounted display device 1 shown in FIGS. 6 and 7 as a conventional example, a forehead pad portion 37 is provided independently on the upper portion of the front frame 31 and comprises a pad cover 101 and a pad 102. Since the pad cover 101 is brought into contact with the pad support block 100 in order to restrict the rotation range of the rotatable movable portion, it is necessary to keep the strength of the pad support block 100 itself sufficiently. On the other hand, in the present embodiment,
The forehead pad portion 12 is rotatably attached to the front frame 31 in a state where the forehead pad portion 12 is combined so as to form a part of the front frame 31, and the rotation range of the forehead pad portion 12 is also limited in FIG. As described above, the operation is performed by a mechanism using predetermined portions of the housing of the front frame 11 and each housing of the pad cover 20. That is, there is no need to separately provide a portion for newly supporting the forehead pad portion 12 or a mechanism for limiting the rotation range. Specifically, in the present embodiment, at least the pad support block 100 is omitted. Thereby, in the head-mounted display device 1 of the present embodiment, the mounting unit 3 can be configured more simply than in the head-mounted display device 1A as a conventional example. It is possible to reduce the size and weight.

It should be noted that the present invention is not limited to the configuration described above, and the detailed shape and the like of each part forming the mounting part 3 may be appropriately changed. Also, the mechanism for limiting the rotation range of the forehead pad section 12 is limited to the configurations shown in the drawings so far as long as the mechanism is configured using the housing of the front frame 11 and each housing portion of the pad cover 20. Not something.

[0030]

As described above, according to the present invention, when the forehead pad portion is at the predetermined rotation-restricted position, the predetermined portion of the forehead pad portion is attached to the predetermined portion of the housing of the front head mounting portion. By making contact with the forehead pad, it is possible to restrict the rotation angle of the forehead pad part within a predetermined range while maintaining sufficient mounting strength for the forehead pad part. In addition, there is no need to add a member for limiting the rotation angle of the forehead pad. This simplifies the configuration of the mounting portion for mounting the optical visual device on the head, which makes it possible to reduce the size and weight of the optical visual device. This has the effect that the feeling of wearing when worn is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a head mounted display device as an embodiment of the present invention.

FIG. 2 is a side view showing a state where the head mounted display device according to the embodiment is mounted.

FIG. 3 is a perspective view showing a mounting structure of a forehead pad portion to a front frame in a mounting portion.

FIG. 4 is a front view and a plan view showing a state in which a forehead pad is attached to a front frame.

FIG. 5 is a cross-sectional side view showing a structure of a mechanism for restricting a rotation range of a forehead pad section in the present embodiment.

FIG. 6 is a perspective view showing an appearance of a conventional head mounted display device.

FIG. 7 is a cross-sectional side view showing a structure of a conventional mechanism for limiting a rotation range of a forehead pad section.

FIG. 8 is a side view showing a state in which a head-mounted display device as a conventional example is mounted.

FIG. 9 is a side view showing a state of a forehead pad when a head mounted display device is mounted on a head in a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Head mounted display apparatus, 2 display part, 3 mounting parts, 11 front panel, 11a side frame connection part, 11b bearing hole, 11c rib, 11
d rib, 11e forehead pad placement space, 12 forehead pad, 13 connection, 14 side frame, 15
Length adjustment part, 16 belts, 17 occipital pads, 20
Pad cover, 20a screw support, 20b torsion coil spring, 20c spring hole, 20d shaft through hole,
20e lower flange, 20f anti-rotation rib, 21 pad, 22 rotating shaft, 22a shaft

Claims (3)

[Claims] A display unit having an optical visual unit for displaying a visual image by including an image display unit and a required optical system to which image light displayed by the image display unit is incident; A head mounting means for mounting the optical visual device on the head such that the display unit is arranged in front of the head so that a display image displayed by the optical visual means can be visually recognized. In the optical vision apparatus, the head-mounted means has a housing having a predetermined shape and is provided to be supported at the front of the head, and is rotatable with respect to the head-mounted part. A forehead pad portion provided to be in contact with the forehead, and a predetermined portion of the forehead pad portion in a position state where the forehead pad portion is at a predetermined rotation limit position, Body By you to abut against a predetermined portion of forming, optical vision system, characterized in that the rotation angle of the amount pad portion is provided with a rotational range limiting means for limiting to be within a predetermined range. 2. The method according to claim 1, wherein the rotation range limiting unit is configured to abut a predetermined portion on the front side of the forehead pad portion against a predetermined portion on the rear surface of the housing of the head front mounting portion.
The optical visual device according to claim 1, further comprising: a rotation range limiting mechanism that limits a rotation angle of the forehead pad in a predetermined rotation direction. 3. The rotation range limiting means includes: an object formed at a predetermined position of the front head mounting portion such that the forehead pad portion is on a locus of rotation in the front head mounting portion. A contact portion formed at a predetermined position of the forehead pad portion. When the forehead pad portion is at a rotation-restricted position in a predetermined rotation direction, the abutment portion rotates at the predetermined rotation. The rotation range limiting mechanism configured to limit a rotation angle in the predetermined rotation direction by contacting the contacted portion from a direction, and a rotation range limiting mechanism. Optical vision device.