JP2016063271A - Head-mounted display and mounting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head-mounted display and a mounting fixture such that an arm part is made short in length and weight balance can be kept.SOLUTION: A position 15B where a mounting fixture 5 is provided with a fitting part 59 is located behind a position 21 of a tip part 61 and in front of a position 25 of the center of gravity of an HMD 1. At the position 15B, the weight of an arm part 4 and an image display part 3 connected through a connection mechanism 8 is placed. The mounting fixture 5 is made larger in weight behind the position 25 of the center of gravity than in front of the position 25 by making a part behind the position 25 of the center of gravity larger in vertical size than a part in front of it and further providing pads 76, 77. Even when the position 15B is put closer to the position 21 of the tip part 61, the position 15B can be located in front of the position 25 of the center of gravity. An HMD 1 can have an arm part 4 constituted to be short by putting the position 15B closer to the position 21 of the tip part 61 so as to suppress a swing etc., thereby displaying a stable image having less blur at an image display part 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a head mounted display and a mounting tool for mounting an image display device on a head.

  2. Description of the Related Art A head-mounted display (hereinafter referred to as “HMD”) that wears a wearing tool attached with an image display device on a user's head and presents an image to the user's eyes is known. The wearing tool provided in the HMD described in Patent Document 1 has a substantially annular shape. The rear part of the wearing tool is opened according to the orientation when wearing the head. The image display device is attached to the front part of the wearing tool. The wearing tool provided in the HMD described in Patent Document 2 has a rod shape, and exhibits a curved shape that protrudes rearward in the direction when the head is worn. Both ends of the wearing tool are connected to a pair of ear pads to be hung on the user's ear. The image display device is connected to the wearing tool via the arm unit. One end of the arm portion is attached to one end portion of the wearing tool. The arm portion is curved and extended from the rear side of the wearing tool toward the front side toward the other end where the image display device is provided.

JP 2001-75496 A JP 2005-189743 A

  However, in Patent Document 1, the image display device is provided so as to protrude forward from the wearing tool. The center of gravity of the HMD is biased toward the front side of the wearing tool in the front-rear direction. For this reason, if the movement of the head is large, the HMD may be detached. If the image display device is provided on the arm portion extending from the rear side to the front side of the wearing tool as in Patent Document 2, the weight of the image display device is applied near the center of the wearing tool. In this case, the center of gravity of the HMD can be disposed near the center of the wearing tool in the front-rear direction. However, in order to reach the arm portion from the rear side to the front side, in Patent Document 2, it is necessary to form the arm portion relatively long. The image display device and the arm portion vibrate with the connecting portion as a fulcrum by a slight movement of the head when worn. The shaking width of the image display device increases according to the length of the arm portion. Therefore, in Patent Document 2, there is a possibility that the image displayed on the image display device is likely to be blurred.

It is an object of the present invention to provide a head mounted display and a mounting tool that can shorten the length of the arm portion and maintain the weight balance.

  According to the first aspect of the present invention, the wearing tool having a portion that is formed in an open ring shape or a closed ring shape and is curved in a convex shape in the first direction and the second direction orthogonal to the first direction, and an image are displayed. An image display device, and an arm portion whose one end portion is disposed on one side of the third direction orthogonal to the first direction and the second direction from the other end portion, wherein the one end portion is a specification of the wearing tool An arm portion connected to the image display device, the other end portion being connected to the image display device, wherein the mounting tool is one side in the second direction from the center position in the second direction of the mounting tool or In the first direction, the position of the distal end portion, which is the end portion on the one side in the first direction of the mounting tool, and the mounting tool in which the image display device and the arm unit are connected in the first direction. The specific position is between the center of gravity of Head-mounted display is provided, characterized in that.

  The head-mounted display (HMD) according to the first aspect is mounted on the user's head, for example, with the second direction facing the left-right direction and one side of the first direction being the front side. The weight of the image display device and the arm unit is applied to a specific position. The image display device is disposed in front of the user's eyes. Therefore, when shortening the length of an arm part, a specific position moves to the front-end | tip part side of a mounting tool in a 1st direction. Here, the position of the center of gravity is on the other side in the first direction, that is, on the rear side of the specific position. Therefore, even if the specific position is brought closer to the tip in the first direction, the HMD can maintain a balance. Therefore, HMD can make the length of an arm part shorter than before. Therefore, the HMD can reduce the swing width when the image display device is shaken by a slight movement of the head. Therefore, the HMD can suppress blurring of an image displayed on the image display device.

  In the first aspect, the wearing tool has a length in the third direction on a surface facing an area surrounded by a curved shape of the wearing tool in a portion on the other side in the first direction from the position of the center of gravity. A first abutting portion may be provided that is longer than the length in the third direction at a portion on one side in the first direction than the position of the center of gravity of the wearing tool. The HMD is provided with a first abutting portion that comes into contact with the head when worn on the other side in the first direction from the position of the center of gravity. Thereby, HMD can move the position of a gravity center to the other side of a 1st direction with the weight of a 1st contact part. On one side of the center of gravity in the first direction, there is a specific position where the weight of the arm unit and the image display device is applied. That is, since the first contact portion and the specific position sandwich the position of the center of gravity in the first direction, the HMD can more reliably maintain the balance in the first direction. In addition, by increasing the area in which the first abutting portion comes into contact with the head in the third direction, the HMD reduces the pressure (that is, the pressing force per unit area) applied to the head by the wearing tool when worn, Head pressure can be relieved.

  1st aspect WHEREIN: The part of the said 3rd direction may be constant length in the part of the said mounting tool in the said 1st direction one side rather than the position of the said gravity center. The wearing tool may have a portion in which the length in the third direction gradually increases from one side of the first direction to the other side on the other side in the first direction than the position of the center of gravity. . In the HMD, the weight is increased in a portion where the length in the third direction is gradually increased, so that the position of the center of gravity can be moved to the other side in the first direction. Since the weight of the arm portion and the image display device is applied to the one side in the first direction from the position of the center of gravity, the HMD can more reliably maintain the balance in the first direction. In addition, since the area that comes into contact with the head at the time of wearing becomes larger in the portion where the length in the third direction becomes gradually larger, the HMD reduces the pressure applied to the head by the wearing tool (that is, the pressing force per unit area). The head pressure can be relieved.

  1st aspect WHEREIN: The said mounting tool WHEREIN: In the said 1st direction, the 1st distance between the said specific position and the position of the said gravity center is a 2nd distance between the position of the said front-end | tip part, and the said specific position. May be shorter. Torque generated by the operation of the image display device and the arm unit is transmitted to the wearing tool via a specific position and acts on the position of the center of gravity. The magnitude of the torque increases as the distance between the image display device or the arm unit and the position of the center of gravity increases. Since the HMD has a specific position closer to the center of gravity than the tip, the torque acting on the wearing tool can be reduced. Therefore, the HMD can maintain a sufficient balance in the first direction.

  In the first aspect, at least a part of the portion of the wearing tool that is the portion of the wearing tool including the tip portion and that is on the one side in the first direction with respect to the position of the center of gravity. A second contact portion may be provided on the surface of the wearing tool that faces the region surrounded by the curved shape. The wearing tool may have the specific position between the position where the second contact portion of the wearing tool is provided and the position of the center of gravity in the first direction. In the second direction, the specific position is located on one side or the other side of the position where the second contact portion is provided. That is, the specific position is, for example, shifted to the left or right from the center of the face when worn. Therefore, the arm portion connected to the wearing tool at the specific position is easily disposed at a position away from the center of the face, and is unlikely to hinder the user's visual field.

  1st aspect WHEREIN: The said 1st connection which connects the said specific position of the said mounting tool, and the said one end part of the said arm part in the state in which the said arm part had the rotational freedom degree of 2 axes or more with respect to the said mounting tool And a second connecting mechanism that connects the image display device and the other end of the arm portion with the image display device having a degree of freedom of rotation of two or more axes with respect to the arm portion. Further, it may be provided. The arm portion may have a constant length between the one end portion and the other end portion. In the HMD, since the length of the arm portion is constant, the torque that acts on the wearing tool from the image display device and the arm portion at a specific position is difficult to change. Therefore, the HMD can maintain a sufficient balance in the first direction.

  1st aspect WHEREIN: The said mounting tool is a 1st part extended between the 1st position and the 2nd position located in the one side of the said 1st direction rather than the said 1st position, With respect to the said 1st position A third position located on one side of the second direction, and a fourth position located on one side of the second direction with respect to the second position and located on one side of the first direction with respect to the third position. A second portion extending between the first position and the third position and between the second position and the fourth position, the first portion and You may provide the 3rd part which follows each of a 2nd part. At least a portion may be curved in a convex shape toward the outside of a region surrounded by the first portion, the second portion, and the third portion. The first portion includes a fourth portion extending between the first position and a fifth position located on the one side in the first direction and the other side in the second direction with respect to the first position; You may have a 5th part extended between said 5th position and said 2nd position located in said 1st direction one side and said 2nd direction one side rather than said 5th position. The second part includes a sixth part extending between the third position and a sixth position located on one side in the first direction and one side in the second direction with respect to the third position, and the sixth part. And a seventh portion extending between the position and the fourth position located on the one side in the first direction and the other side in the second direction with respect to the sixth position. When the HMD is mounted, each portion of the mounting tool fits the shape of the user's head and securely holds the head, so that displacement of the mounting position is suppressed.

  In the first aspect, the third part of the wearing tool may extend between the second position and the fourth position, and may be continuous with each of the first part and the second part. The wearing tool is closed on one side in the first direction and opened on the other side in the first direction. When the HMD is mounted on the head, the ring opening side of the mounting tool is expanded and the ring closing side is positioned, and then the HMD is mounted in such a manner that the head is pressed on the ring opening side. The specific position is located on one side in the first direction with respect to the position of the center of gravity, that is, closer to the ring closing side of the wearing tool. Since the HMD arranges the image display device on the ring-closing side, it is easy to position the image display device with respect to the head.

  According to the second aspect of the present invention, there is provided a mounting tool for mounting an image display device for displaying an image, wherein the second position is located on one side in the first direction with respect to the first position. A first portion extending between the first position, a third position located in one of the second directions perpendicular to the first direction with respect to the first position, and one of the second directions with respect to the second position And a second portion extending between a fourth position located on one side of the first direction with respect to the third position, between the first position and the third position, and the second position A third part extending between at least one of a position and the fourth position and continuing to each of the first part and the second part, at least a part of which is the first part and the second part Curved convexly towards the outside of the area surrounded by the part and the third part, In addition, the one end of the arm portion is located on one side of the third direction orthogonal to the first direction and the second direction from the other end, and the image display device is connected to the other end. The specific position where the parts are connected is a position on one side or the other side of the second direction with respect to the center position in the second direction, and in the first direction, at an end on the one side in the first direction. There is provided a mounting tool having a position between a position of a tip portion and a position of a center of gravity in the first direction when the image display device and the arm portion are connected.

  For example, the HMD in which the image display device is attached to the wearing tool according to the second aspect via the arm portion is mounted on the user's head with the second direction in the left-right direction and the one side in the first direction on the front side. Is done. The weight of the image display device and the arm unit is applied to a specific position. The image display device is disposed in front of the user's eyes. Therefore, when shortening the length of an arm part, a specific position moves to the front-end | tip part side of a mounting tool in a 1st direction. Here, the position of the center of gravity is on the other side in the first direction, that is, on the rear side of the specific position. Therefore, even if the specific position is brought closer to the tip in the first direction, the HMD can maintain a balance. Therefore, HMD can make the length of an arm part shorter than before. Therefore, the HMD can reduce the swing width when the image display device is shaken by a slight movement of the head. Therefore, the HMD can suppress blurring of an image displayed on the image display device.

It is the perspective view which looked at HMD1 from the front lower part. It is a top view of HMD1. It is a left view of HMD1. It is the perspective view which looked at the image display part 3 from the back upper right. It is the perspective view which looked at the image display unit 2 from the front upper direction. It is the perspective view which looked at the image display unit 2 from the front left lower part. It is a perspective view of HMD101.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The drawings to be referred to are used for explaining technical features that can be adopted by the present invention. The configuration of the apparatus described in the drawings is not intended to be limited to that, but merely an illustrative example.

  As shown in FIGS. 1 to 3, a head mounted display (hereinafter referred to as “HMD”) 1 is an optically transmissive HMD that can be mounted on a user's head. The light of the scenery in front of the user's eyes is guided directly to the user's eyes by passing through the half mirror 35. The projection format of HMD1 is a virtual image projection type. The half mirror 35 reflects light of an image displayed on a liquid crystal panel (not shown) toward one eye of the user. The HMD 1 can allow the user to recognize an image superimposed on the scene in front of him. The HMD 1 includes an image display unit 3, an arm unit 4, a mounting tool 5, and coupling mechanisms 8 and 9. The image display unit 3, the arm unit 4, and the coupling mechanisms 8 and 9 constitute an image display unit 2 that can be attached to and detached from the mounting tool 5. Hereinafter, in order to help understand the description of the figure, the upper side, lower side, left side, right side, front side, and rear side of the HMD 1 are defined. The upper side, the lower side, the left side, and the right side of the HMD 1 correspond to, for example, the upper side, the lower side, the right side, and the left side of FIG. The front side and the rear side of the HMD 1 correspond to, for example, the lower side and the upper side of FIG. The upper side, the lower side, the left side, the right side, the front side, and the rear side of the HMD 1 correspond to the user reference directions when the wearing tool 5 is worn by the user.

  The mounting tool 5 is made of a flexible material such as resin or metal (for example, stainless steel). The mounting tool 5 is an elongated plate-like member that is formed in a substantially annular shape and that opens on the rear side. The shape of the wearing tool 5 of this embodiment is a symmetrical shape and a vertically symmetrical shape. Hereinafter, for convenience, the configuration of the wearing tool 5 will be described in five parts. The mounting tool 5 has a middle front portion 53, a right front portion 54, a right rear portion 55, a left front portion 56 and a left rear portion 57.

  The front right portion 54 is a portion extending between the position 12 and the position 16. The position 12 is located in front of the position 16 and on the left side. The right front portion 54 is curved in a convex shape toward the outside, that is, the front side and the right side of the region 10 surrounded by the mounting tool 5. The right rear portion 55 is a portion extending between the position 16 and the position 11. The position 11 is located behind the position 16 and on the left side. The right rear portion 55 is continuous with the right front portion 54. The right rear portion 55 is curved in a convex shape toward the outside of the region 10, that is, the rear side and the right side. In other words, the right front part 54 and the right rear part 55 constitute a right part 51 when the configuration of the wearing tool 5 is divided into three parts, a middle front part 53, a right part 51 and a left part 52. The right side portion 51 is connected to the right side of the middle front portion 53 and extends toward the rear side. The right portion 51 is curved in a convex shape toward the right side.

  The left front portion 56 is a portion extending between the position 14 and the position 17. Position 17 is located to the left of position 16. The position 14 is a position to the left of the position 12 and is located on the front side and the right side of the position 17. The left front portion 56 is curved in a convex shape toward the outside of the region 10, that is, the front side and the left side. The left rear portion 57 is a portion extending between the position 17 and the position 13. The position 13 is a position to the left of the position 11 and is located on the rear side and the right side of the position 17. The left rear portion 57 is continuous with the left front portion 56. The left rear portion 57 is curved in a convex shape toward the outside of the region 10, that is, the rear side and the left side. In other words, the left front portion 56 and the left rear portion 57 constitute the left portion 52 of the wearing tool 5. The left side portion 52 is connected to the left side of the middle front portion 53 and extends toward the rear side. The left side portion 52 is curved in a convex shape toward the left side.

  The middle front portion 53 is a portion extending in the left-right direction between the position 14 and the position 12. The middle front portion 53 is continuous with each of the right front portion 54 and the left front portion 56. The middle front portion 53 is curved in a convex shape toward the outside of the region 10, that is, the front side. At the center position 21 of the mounting tool 5 in the left-right direction, a distal end portion 61 that is the foremost end of the mounting tool 5 in the front-rear direction is arranged. At the positions 11 and 13, the rearmost ends 62 and 63 of the mounting tool 5 in the front-rear direction are arranged, respectively. At the position 16, the rightmost end portion 64 of the wearing tool 5 in the left-right direction is disposed. At the position 17, the leftmost end portion 65 of the wearing tool 5 in the left-right direction is disposed.

  The wearing tool 5 holds the user's head across the user's head when worn. The curved shape of the wearing tool 5 is part by part so that the right rear portion 55 and the left rear portion 57 can respectively press the user's temporal region and obtain a sufficient pressing force to support the weight of the HMD 1. Different. The position 12 is a position that is a boundary between the curved shape of the middle front portion 53 and the curved shape of the right front portion 54. The position 14 is a position that is a boundary between the curved shape of the middle front portion 53 and the curved shape of the left front portion 56. At the position 16, the boundary between the curved shape of the right front portion 54 and the curved shape of the right rear portion 55 is located. At the position 17, the boundary between the curved shape of the left front portion 56 and the curved shape of the left rear portion 57 is located.

  The radial direction of the curvature circle in contact with the surface facing the inside of the region 10 of the wearing tool 5 in plan view is defined as the thickness direction of the wearing tool 5. The sizes in the thickness direction of the middle front portion 53, the right front portion 54, and the left front portion 56 of the mounting tool 5 are substantially the same size. The sizes in the thickness direction of the right rear portion 55 and the left rear portion 57 are the thicknesses of the protrusions 66 and 67 (described later) with respect to the sizes in the thickness direction of the middle front portion 53, the right front portion 54, and the left front portion 56, respectively. Large by the size of the direction. The sizes in the vertical direction of the middle front portion 53, the right front portion 54, and the left front portion 56 are substantially the same. The sizes of the right rear portion 55 and the left rear portion 57 in the vertical direction gradually increase from the front side to the rear side, and are the largest in the vicinity of the end portions 62 and 63 and gradually toward the end portions 62 and 63. Becomes smaller.

  Projections 66 and 67 projecting into the region 10 are formed in the right rear portion 55 and the left rear portion 57, respectively. The protrusions 66 and 67 are provided in a form in which the inner surfaces 70 and 71 facing the inside of the region 10 of the right rear portion 55 and the left rear portion 57 are stepped out in the thickness direction toward the region 10. Therefore, the inner surfaces 70 and 71 each have a curved surface shape that follows the curved shapes of the right rear portion 55 and the left rear portion 57. Accordingly, the vertical sizes of the protrusions 66 and 67 are also gradually increased from the front side toward the rear side, are largest in the vicinity of the end portions 62 and 63, and gradually decrease toward the end portions 62 and 63.

  Holding grooves 68 and 69 extending in a groove shape along the circumferential direction with respect to the protruding direction are formed on the side surfaces of the protruding portions 66 and 67 with respect to the protruding direction (that is, the thickness direction), respectively. The holding grooves 68 and 69 are provided around the protrusions 66 and 67, respectively. The portion of the holding groove 68 that opens to the upper side surface of the protrusion 66 and the portion of the holding groove 68 that opens to the lower side surface extend along the curved shape of the right rear portion 55, respectively. Similarly, the portion of the holding groove 69 that opens to the upper side surface of the protrusion 67 and the portion of the holding groove 69 that opens to the lower side surface also extend along the curved shape of the left rear portion 57.

  A cable 39 (see FIG. 2) that electrically connects the image display unit 3 and an external device (not shown) is drawn from the image display unit 3. The cable 39 is wired along the arm portion 4 and the mounting tool 5. The holding grooves 68 and 69 hold the portion of the cable 39 wired in the mounting tool 5 in the groove. The vertical size (that is, the depth) of the holding grooves 68 and 69 is larger than the outer diameter of the cable 39. Therefore, the cable 39 held in the holding grooves 68 and 69 is not exposed outside the grooves from the openings of the holding grooves 68 and 69. The cable 39 drawn from the image display unit 3 passes through the arm unit 4 and is inserted into the holding groove 69 on the side close to the arm unit 4 (for example, the left side). The cable 39 is inserted into the holding groove 69 from the front end 69 </ b> A of the holding groove 69. The cable 39 is a portion that opens to the side surface on the upper side of the protruding portion 67 in the holding groove 69, and is wired through the groove. The cable 39 is guided by the holding groove 69 and pulled out from the rear end portion 69 </ b> B of the holding groove 69 to the outside of the mounting tool 5.

  The wearing tool 5 includes pads 75 to 77 that come into contact with the user's head when worn. The pads 75 to 77 are made of an elastic resin such as a silicon resin. The pad 75 is provided on the inner surface 72 facing the inside of the region 10 in the middle front portion 53 and including the position 21 at the center in the left-right direction of the wearing tool 5. The pad 75 extends in the left-right direction along the curved shape of the middle front portion 53 and protrudes in a direction away from the inner surface 72 (for example, rearward in FIG. 2) along the thickness direction. The size of the pad 75 in the vertical direction is substantially the same as or smaller than the size of the mounting tool 5 in the middle front portion 53 in the vertical direction. When the HMD 1 is mounted, the pad 75 contacts the forehead or frontal portion of the user and positions the mounting tool 5 on the head.

  The pads 76 and 77 are provided on the inner surface 70 of the right rear portion 55 and the inner surface 71 of the left rear portion 57, respectively. The pad 76 extends along the curved shape of the right rear portion 55 and protrudes in the thickness direction toward the region 10. The length in which the pad 76 extends in the direction along the curved direction of the right rear portion 55 is shorter than the length of the right rear portion 55. The vertical size of the pad 76 is substantially the same as or smaller than the vertical size of the right rear portion 55. The vertical size of the pad 76 is larger than the vertical size of the middle front portion 53, the right front portion 54, and the left front portion 56. In the present embodiment, the pad 76 is provided on the inner surface 70 at a portion from the approximate center in the direction along the curved shape of the right rear portion 55 to the end portion 62. The pad 77 extends along the curved shape of the left rear portion 57 and protrudes in the thickness direction toward the region 10. The length in which the pad 77 extends in the direction along the curved direction of the left rear portion 57 is shorter than the length of the left rear portion 57. The vertical size of the pad 77 is substantially the same as or smaller than the vertical size of the left rear portion 57. Further, the size of the pad 77 in the vertical direction is larger than the size in the vertical direction of the middle front portion 53, the right front portion 54 and the left front portion 56. In the present embodiment, the pad 77 is provided on the inner surface 71 at a portion from the substantially center to the end portion 63 in the direction along the curved shape of the left rear portion 57.

  As described above, the mounting tool 5 has flexibility. When the HMD 1 is mounted, the mounting tool 5 is separated by being pushed and spread by the user's hand with the end 62 and the end 63 facing the outside of the region 10 (for example, in the left-right direction). When the wearing tool 5 is fitted to the user's head, the pad 75 contacts the user's forehead or forehead, thereby positioning the wearing tool 5 in the front-rear direction on the head. When the expanded state of the end portions 62 and 63 is released, the right rear portion 55 and the left rear portion 57 of the mounting tool 5 are urged toward the inside of the region 10. The pads 76 and 77 are in contact with the right and left heads of the user, respectively. The inner surface 70 of the right rear portion 55 presses the right side of the user through the pad 76. Similarly, the inner surface 71 of the left rear portion 57 presses the left side of the user via the pad 77. The right rear portion 55 and the left rear portion 57 of the mounting tool 5 obtain a pressing force that presses the user's temporal region, and holds the user's head across the head. As described above, the inner surfaces 70 and 71 that are formed large in the vertical direction have a larger area in contact with the user's temporal region than the inner surface 72 of the middle front portion 53. Therefore, when the mounting tool 5 is mounted on the user's head, the pads 76 and 77 obtain a large frictional force with the head by increasing the contact area with the head. By ensuring the friction area, the wearing tool 5 can suppress the occurrence of positional deviation in the head. The pads 76 and 77 have a larger area in contact with the user's temporal region than the pad 75. Therefore, the right rear portion 55 and the left rear portion 57 can disperse the pressing force that presses the temporal region through the pads 76 and 77, respectively. That is, the HMD 1 can reduce the pressing force per unit area received by the user on the rear side head. Therefore, the user is less likely to feel pressure on the temporal region.

  Attachment portions 58 and 59 are provided at portions between the front end portion 61 on the front side in the front-rear direction and the end portions 64 and 65 on both sides in the left-right direction, respectively. The position 15 </ b> A where the attachment portion 58 is provided is a position on the right side of the position 21 and on the front side of the position 22. As described above, the position 22 is located at the center of the wearing tool 5 in the front-rear direction. The position 15 </ b> B where the attachment portion 59 is provided is a position on the left side of the position 21 and on the front side of the position 22. The attachment tool 5 can attach the connection mechanism 8 that connects the attachment tool 5 and the arm part 4 to the attachment parts 58 and 59. In the present embodiment, the coupling mechanism 8 is attached to the attachment portion 59. The connection mechanism 8 will be described later.

  Two holes 58A penetrating the wearing tool 5 in the thickness direction are formed in the attachment portion 58 (see FIG. 1). Similarly, two holes (not shown) penetrating the mounting tool 5 in the thickness direction are also formed in the attachment portion 59. A screw is inserted through the hole 58A. The connection mechanism 8 is attached to the attachment portions 58 and 59 by screws. That is, the image display unit 2 including the image display unit 3, the arm unit 4, and the coupling mechanisms 8 and 9 can be attached by selecting one of the attachment unit 58 and the attachment unit 59. When the image display unit 2 is attached to the attachment portion 58, the image display portion 3 is disposed on the right side of the wearing tool 5. The image display unit 3 can cause image light to enter the right eye of the user. When the image display unit 2 is attached to the attachment portion 59, the image display portion 3 is disposed on the left side of the wearing tool 5. The image display unit 3 can cause image light to enter the left eye of the user.

  As shown in FIG. 4, the image display unit 3 includes a half mirror 35, a lens unit 36, and an image unit 37 in a housing 31. The casing 31 has a substantially rectangular parallelepiped shape with curved corners. The housing 31 extends long in a predetermined direction. The housing 31 has a hollow box shape. The tip 31A, which is one end in the direction in which the casing 31 extends, is opened. In addition, a protruding portion 32 that protrudes rearward is formed on the base end portion 31 </ b> B that is the other end portion of the housing 31. A hole (not shown) penetrating in the front-rear direction is formed at the rear end of the protrusion 32. In the base end portion 31 </ b> B, a fixing portion 94 of the coupling mechanism 9 is connected to a position on the rear surface of the housing 31 on the right side of the protruding portion 32. The connection mechanism 9 will be described later.

  An image unit 37 is provided in the housing 31 at the base end portion 31B. The image unit 37 includes a known liquid crystal panel (not shown) and a control board (not shown). The liquid crystal panel generates image light by displaying an image on the left side. The control board is disposed on the right side of the liquid crystal panel. A cable 39 is connected to the control board. The cable 39 passes through the protrusion 32 and is drawn out of the image display unit 3 from the hole at the rear end of the protrusion 32. The control board receives image data transmitted from the external device via the cable 39. The control board outputs a control signal to the liquid crystal panel and displays an image corresponding to the image data on the liquid crystal panel. Instead of the liquid crystal panel, a two-dimensional display device such as a digital mirror device (DMD) or an organic EL may be used. Further, instead of the liquid crystal panel, a retinal scanning type projection device (Retinal Scanning Display) that projects two-dimensionally scanned light onto the retina of the user may be used.

  In the housing 31, a lens unit 36 is provided on the right side of the image unit 37. The lens unit 36 allows the image light emitted from the image unit 37 to pass therethrough and guides it to the distal end portion 31A side. The lens unit 36 includes a plurality of lenses (not shown). The lens unit 36 is held by the housing 31 so as to be movable in the left-right direction. An operation member 38 having a truncated cone shape and having a plurality of irregularities on the side surface is provided on the front surface of the housing 31. The operation member 38 is engaged with the lens unit 36 by a groove cam (not shown). When the operation member 38 is rotated, the lens unit 36 moves toward the distal end portion 31A side or the proximal end portion 31B side. As the lens unit 36 moves in the left-right direction, the focal length of the image light emitted from the image unit 37 changes. Therefore, the user can adjust the focus by rotating the operation member 38.

  A half mirror 35 is provided at the tip 31A. The half mirror 35 has a rectangular plate shape. The half mirror 35 can reflect a part (for example, 50%) of the light incident on the reflecting surface and transmit the other part. The reflective surface of the half mirror 35 is formed, for example, by vapor-depositing a metal such as aluminum or silver on a transparent resin or glass substrate so as to have a predetermined reflectance (for example, 50%). When the HMD 1 is mounted, the base end portion 31B of the housing 31 is disposed on the left side of the tip end portion 31A. That is, the image display unit 3 is used in a state of being arranged extending in the left-right direction. The half mirror 35 is disposed in front of the user's left eye, for example. Half mirror 35 is fixed to tip part 31A in the state where the reflective surface turned to the left side and the back side. The image light emitted from the image unit 37 in the housing 31 is condensed when passing through the lens unit 36. The condensed image light is incident on the half mirror 35. The half mirror 35 reflects the image light to the rear side and makes it incident on the left eye of the user. The user can visually recognize a virtual image based on the image light reflected by the half mirror 35. Further, the half mirror 35 can transmit external light incident from the front side to the rear side.

  As shown in FIGS. 1 to 3, 5, and 6, the arm portion 4 is made of resin, metal, or the like, and extends in a rod shape. The upper end portion 4 </ b> A of the arm portion 4 is connected to the mounting tool 5 by the connecting mechanism 8. The lower end 4 </ b> B of the arm unit 4 is connected to the image display unit 3 by the connecting mechanism 9. The arm unit 4 holds the image display unit 3 at a position separated from the mounting tool 5. As shown in FIG. 1, when the HMD 1 is mounted, the lower end 4B of the arm unit 4 is disposed on the lower side and the left side of the upper end 4A. The arm portion 4 is curved in a convex shape toward the outside of the region 10. In the present embodiment, the arm portion 4 is curved in a convex shape toward the left when the HMD 1 is mounted.

  As shown in FIGS. 5 and 6, the arm portion 4 includes a connection portion 41 at the upper end portion 4A. The connection portion 41 is a portion where the arm portion 4 is connected to the coupling mechanism 8. The connection portion 41 protrudes along the predetermined direction B (see FIG. 5) at the upper end portion 4A. The direction B is a direction in which the arm part 4 is inclined with respect to a direction C extending from the upper end part 4A toward the lower end part 4B. The connecting portion 41 is formed with a hole (not shown) extending along the direction B. A rod body of a ball stud 81 (described later) of the coupling mechanism 8 is inserted into the hole. That is, the rod body of the ball stud 81 extends along the direction B. The arm portion 4 is connected to the coupling mechanism 8 by fixing the rod body to the connection portion 41.

  The coupling mechanism 8 has two or more rotational degrees of freedom. The connection mechanism 8 of this embodiment is a known ball joint type movable part. The coupling mechanism 8 includes a ball stud 81, a socket housing portion 82, a fixing nut 83, and a holding portion 84. The ball stud 81 is a component in which a rod is connected to a sphere. The socket accommodating portion 82 has a cylindrical shape, and accommodates a socket (not shown) that makes spherical contact with the sphere of the ball stud 81. The fixing nut 83 is a lid that can be externally fitted to the opening of the socket housing portion 82 and fastened. The fixing nut 83 is formed with an insertion hole (not shown) through which the rod body of the ball stud 81 is inserted. The ball stud 81 has a movable range in which the rod body can move within the insertion hole with a sphere in contact with the socket as a fulcrum. As shown in FIG. 5, when the shaft of the rod is located at the center of the insertion hole, the ball stud 81 is located at the center of the movable range. At this time, the extending direction of the rod body of the ball stud 81, that is, the extending direction B of the connecting portion 41 coincides with a direction A (see FIG. 1) described later. That is, the movable range of the ball stud 81 is, for example, a predetermined solid angle (that is, within the range of the conical surface) with the direction A as the central axis. When the fixing nut 83 is fastened to the socket housing portion 82, the ball stud 81 is positioned with respect to the socket housing portion 82 by pressing the spherical body against the socket.

  The holding portion 84 is provided at the end of the socket housing portion 82 opposite to the side on which the fixing nut 83 is fitted. The holding portion 84 is a component that attaches the coupling mechanism 8 to the attachment portions 58 and 59 of the mounting tool 5. The holding portion 84 includes an upper wall 85, an inner wall 86, and an outer wall 87. The upper wall 85 is a portion that abuts on an upper surface of the mounting portion 58, 59 that faces upward when the HMD 1 is mounted on the head, of the side surface of the mounting tool 5. The inner side wall 86 is a part that contacts the inner surface facing the inside of the region 10 among the side surfaces of the mounting tool 5 in the attachment portions 58 and 59. The outer side wall 87 is a part that contacts the outer surface on the opposite side to the inner surface facing the inside of the region 10 among the side surfaces of the mounting tool 5 in the attachment portions 58 and 59. The outer wall 87 has two holes 87A (see FIG. 6). When the holding portion 84 is attached to the attachment portions 58 and 59, the holding portion 84 is attached from the upper side of the attachment portions 58 and 59 so that the attachment portions 58 and 59 are sandwiched between the inner wall 86 and the outer wall 87. , 59. The attachment portions 58 and 59 are fixed to the attachment portions 58 and 59 by fastening a hole (not shown) with a screw inserted through the hole portion 58A and the hole portion 87A.

  The arm part 4 includes a connection part 42 at the lower end part 4B. The connecting portion 42 is a portion where the arm portion 4 is connected to the coupling mechanism 9. The connection part 42 protrudes along the direction B substantially the same as the connection part 41 in the lower end part 4B. The connecting portion 42 is also formed with a hole (not shown). A rod body of a ball stud 91 (described later) of the coupling mechanism 9 is inserted into the hole. That is, the rod body of the ball stud 91 extends along the direction B. The arm portion 4 is connected to the coupling mechanism 9 by fixing the rod body to the connection portion 42.

  The connection mechanism 9 has two or more rotational degrees of freedom. As shown in FIGS. 4 and 5, the connection mechanism 9 of the present embodiment is a known ball joint type movable part, like the connection mechanism 8. The connection mechanism 9 includes a ball stud 91, a socket housing portion 92, a fixing nut 93, and a fixing portion 94. The configurations of the ball stud 91, the socket accommodating portion 92, and the fixing nut 93 are the same as those of the coupling mechanism 8. When the shaft of the ball stud 91 is positioned at the center of the insertion hole (not shown) of the fixing nut 93, the ball stud 91 is positioned at the center of the movable range. At this time, the extending direction of the rod body of the ball stud 91, that is, the extending direction B of the connecting portion 42 coincides with the direction A (described later). That is, the movable range of the ball stud 91 is, for example, a predetermined solid angle (that is, within the range of the conical surface) with the direction A as the central axis.

  The fixing portion 94 is provided at an end portion of the socket housing portion 92 opposite to the side on which the fixing nut 93 is fitted (that is, the right end portion of the socket housing portion 92). The fixing unit 94 is a component that fixes the coupling mechanism 9 to the image display unit 3. The fixing part 94 includes a first fixing part 95, a second fixing part 96, and a stepped connection part 97. The first fixing portion 95 is connected to the socket accommodating portion 92. The first fixing portion 95 is located on the rear side of the protruding portion 32. The left end of the first fixing portion 95 to which the socket accommodating portion 92 is connected is located slightly to the left of the left end of the protruding portion 32. The second fixing portion 96 is located forward and to the right of the first fixing portion 95. The second fixing part 96 is located on the right side of the protruding part 32 on the rear surface of the image display part 3. The second fixing unit 96 is connected to the image display unit 3. For example, the second fixing portion 96 is connected to the base end portion 31 </ b> B of the image display portion 3 on the rear side of the half mirror 35 in the front-rear direction. The step-like connecting portion 97 connects the first fixing portion 95 and the second fixing portion 96 in a step shape. The step-like connecting portion 97 extends from the front side portion of the first fixing portion 95 across the rear end of the protruding portion 32 in the left-right direction. The step-like connecting portion 97 further extends to the left side portion of the second fixing portion 96 along the protruding portion 32 on the right side of the protruding portion 32. A hole 97A penetrating in the front-rear direction is formed in a portion where the stepped connection portion 97 crosses the rear end of the protruding portion 32. The cable 39 led out from the hole at the rear end of the protrusion 32 is inserted into the hole 97A.

  The HMD 1 having the above configuration takes the form described below when the image display unit 2 is attached to the attachment portion 58 and the coupling mechanisms 8 and 9 are in the center of the movable range. As shown in FIG. 1 and FIG. 2, a direction A that passes through the position 15B where the attachment portion 59 is provided and goes from the inside of the region 10 to the outside is defined as a direction A. The coupling mechanism 8 is provided so as to protrude to the outside of the region 10 in the direction A with respect to the mounting tool 5. The upper end portion 4 </ b> A of the arm portion 4 is connected to the coupling mechanism 8 on the outer side of the region 10 in the direction A than the coupling mechanism 8. The lower end 4B of the arm part 4 is disposed below the upper end 4A. The coupling mechanism 9 is connected to the proximal end portion 31 </ b> B of the image display unit 3 on the rear side of the image display unit 3. Since the housing 31 of the image display unit 3 extends in the left-right direction, the distal end portion 31A is disposed to the right of the proximal end portion 31B. When the HMD 1 is mounted on the user's head, the half mirror 35 is disposed in front of the user's left eye.

  In the HMD 1 of this embodiment, the mounting tool 5 is configured based on the position 25 of the center of gravity of the HMD 1 so that the balance of the entire HMD 1 when mounted on the user's head is taken into consideration. As shown in FIGS. 2 and 3, the position 25 of the center of gravity of the HMD 1 is a position where a resultant force of gravity acting on each part of the HMD 1 is considered to act. The position 25 of the center of gravity changes depending on the positional relationship among the wearing tool 5, the arm unit 4, and the image display unit 3. Therefore, in the present embodiment, it is assumed that the relationship between the position, size, and the like of each part is set based on the position 25 of the center of gravity obtained when the form of the HMD 1 is held in the following form. The wearing tool 5 is mounted on the user's head with the middle front portion 53 disposed on the front side of the user, the left side portion 52 disposed on the right side, and the right side portion 51 disposed on the right side. The upper end portion 4A of the arm portion 4 is connected to the mounting tool 5 via the connecting mechanism 8 at a position 15B where the mounting portion 59 of the mounting tool 5 is provided. The arm portion 4 has an upper end portion 4A located above the lower end portion 4B. In the image display unit 3, the distal end portion 31A is disposed on the right side of the proximal end portion 31B. The ball studs 81 and 91 of the coupling mechanisms 8 and 9 are arranged at the center of the movable range, respectively. The ball studs 81 and 91 are held in a non-movable state in the socket by fastening of the fixing nuts 83 and 93.

  In the HMD 1 in which the form is maintained as described above, the position 25 of the center of gravity is obtained as follows. For example, the HMD 1 is hung with a thread attached to an arbitrary position of the wearing tool 5 and the direction of the extension line of the thread is recorded. The HMD 1 is hung with a thread attached at an arbitrary position different from the tip of the wearing tool, and the direction of the extension line of the thread is recorded. The position of the intersection of the two recorded extension lines is obtained and set as the position 25 of the center of gravity of HMD1. As shown in FIG. 2, the position 25 of the center of gravity of the HMD 1 obtained in this way is desirably located on the left side of the center position 21 in the left-right direction and on the front side of the center position 22 in the front-rear direction. In the present embodiment, the center of gravity position 25 is located on the left side of the center 21 in the left-right direction and on the front side of the positions 16 and 17 at both ends in the left-right direction. That is, the position 25 of the center of gravity in the front-rear direction is located on the front side of the center position 22 in the front-rear direction.

  The position 15B where the attachment portion 59 is provided in the mounting tool 5 is located on the rear side of the position 21 of the distal end portion 61 and is located on the front side of the position 25 of the center of gravity. The tip portion 61 is provided with a pad 75, and the attachment portion 59 is provided on the rear side of the portion where the pad 75 is provided. The position where the pad 75 is provided includes the position 21 at the center in the left-right direction of the wearing tool 5. Therefore, the arm part 4 connected to the mounting tool 5 in the attachment part 59 is difficult to be placed in front of the user's eyes when wearing.

  The weight of the arm unit 4 and the image display unit 3 connected via the connection mechanism 8 is applied to the position 15B. In order to suppress the shaking of the arm portion 4 and the like and reduce the shake of the image display portion 3, it is preferable to make the arm portion 4 shorter by bringing the position 15B closer to the position 21 of the distal end portion 61. In this case, even if the position 15B is brought closer to the position 21 of the tip portion 61 in the front-rear direction, the HMD 1 can maintain a balance in the front-rear direction as long as the position 15B can be kept in front of the position 25 of the center of gravity. it can. In order to maintain the state where the position 15B is located on the front side of the center of gravity position 25, the wearing tool 5 may have a weight of a portion on the rear side of the center of gravity position 25 larger than a weight of the front side portion. As described above, the vertical sizes of the middle front portion 53, the right front portion 54, and the left front portion 56 of the mounting tool 5 are substantially the same. The mounting tool 5 has portions larger than the vertical size of the middle front portion 53, the right front portion 54, and the left front portion 56 in each of the right rear portion 55 and the left rear portion 57. Therefore, the wearing tool 5 can make the weight of the rear part from the position 25 of the center of gravity larger than the weight of the front part.

  Furthermore, the wearing tool 5 has pads 76 and 77 in a portion on the rear side from the position 25 of the center of gravity. The pads 76 and 77 are large in the vertical direction in accordance with the right rear portion 55 and the left rear portion 57. Therefore, the wearing tool 5 can add the weights of the pads 76 and 77, and can make the weight of the rear part of the center of gravity position 25 larger than the weight of the front part. Further, by increasing the size of the pads 76 and 77 in the vertical direction in accordance with the right rear portion 55 and the left rear portion 57, the pads 76 and 77 increase the area of contact with the head when the head is mounted. Can do.

  As shown in FIGS. 2 and 3, in the front-rear direction, the distance between the position 15B and the center of gravity position 25 is L1, and the distance between the position 15B and the position 21 of the tip 61 is L2. In this case, the wearing tool 5 satisfies L1 <L2. In comparison of the distance from the center of gravity position 25, the positions 15B and 21 in the mounting tool 5 are based on the center position in the thickness direction of the mounting tool 5, respectively. In the attachment portion 59 provided at the position 15B, the mounting tool 5 is subjected to torque generated in accordance with the operation of the image display portion 3 and the arm portion 4. In order to reduce the action of torque, it is effective to bring the portion where the torque is applied closer to the center of gravity, and it is desirable that the wearing tool 5 satisfy L1 <L2.

  And the arm part 4 of this embodiment is constant in length and does not change. If at least the length of the arm unit 4 is constant, the positional relationship among the mounting tool 5, the arm unit 4, and the image display unit 3 is less likely to change greatly compared to the case where the length of the arm unit 4 is variable. Therefore, the torque that the image display unit 3 and the arm unit 4 act on the mounting tool 5 at the attachment unit 59 is unlikely to change.

  As described above, the weight of the image display unit 3 and the arm unit 4 in the mounting tool 5 is applied to the position 15B where the attachment unit 59 is provided. When the holding portion 84 is attached to the attachment portion 58, the weight of the image display portion 3 and the arm portion 4 is applied to the position 15A. The image display unit 3 is disposed in front of the user's eyes. Therefore, when shortening the length of the arm portion 4, the positions 15 </ b> A and 15 </ b> B move to the distal end portion 61 side of the mounting tool 5 in the front-rear direction. Here, the position 25 of the center of gravity is on the rear side of the positions 15A and 15B. Therefore, even if the positions 15A and 15B are brought closer to the front end portion 61 side in the front-rear direction, the HMD 1 can maintain a balance. Therefore, HMD1 can make the length of the arm part 4 shorter than before. Therefore, the HMD 1 can reduce the shaking width when the image display unit 3 is shaken by a slight movement of the head. Therefore, the HMD 1 can suppress blurring of the image displayed on the image display unit 3.

  The HMD 1 is provided with pads 76 and 77 that are brought into contact with the head when worn on the rear side of the position 25 of the center of gravity. Accordingly, the HMD 1 can move the center of gravity position 25 to the rear side by the weights of the pads 76 and 77. On the front side of the center of gravity, there are positions 15A and 15B where the weights of the arm unit 4 and the image display unit 3 are applied. That is, since the pads 76 and 77 and the positions 15A and 15B sandwich the position 25 of the center of gravity in the front-rear direction, the HMD 1 can more reliably maintain the balance in the front-rear direction. Further, by increasing the area in which the pads 76 and 77 are in contact with the head in the vertical direction, the HMD 1 reduces the pressure applied to the head by the wearing tool 5 at the time of wearing (ie, the pressing force per unit area), Head pressure can be relieved.

  The mounting tool 5 has a portion whose length in the vertical direction gradually increases from the front side to the rear side on the rear side of the position 25 of the center of gravity. Since the weight of the HMD 1 increases in the portion where the length in the vertical direction gradually increases, the center of gravity position 25 can be moved to the rear side. Since the weight of the arm unit 4 and the image display unit 3 is applied to the front side of the position 25 of the center of gravity, the HMD 1 can more reliably maintain the balance in the front-rear direction. In addition, since the area that comes into contact with the head at the time of wearing increases in the portion where the length in the vertical direction gradually increases, the HMD 1 reduces the pressure applied to the head by the wearing tool 5 (that is, the pressing force per unit area). The head pressure can be relieved.

  Torque generated by the operation of the image display unit 3 and the arm unit 4 is transmitted to the mounting tool 5 via the positions 15A and 15B and acts on the position 25 of the center of gravity. The magnitude of the torque increases as the distance between the image display unit 3 or the arm unit 4 and the center of gravity position 25 increases. The HMD 1 satisfies L1 <L2 and the positions 15A and 15B are closer to the center of gravity than the distal end portion 61. Therefore, the torque acting on the wearing tool 5 can be reduced. Therefore, the HMD 1 can maintain a sufficient balance in the front-rear direction.

  The positions 15A and 15B are located on the right side or the left side of the position where the pad 75 is provided in the left-right direction. That is, the positions 15A and 15B are shifted to the right or left from the center of the face when worn. Therefore, the arm portion 4 connected to the wearing tool 5 at the positions 15A and 15B is easily disposed at a position away from the center of the face, and is unlikely to hinder the user's visual field.

  In the HMD 1, the length of the arm portion 4 is constant. Therefore, the torque acting on the wearing tool 5 from the image display unit 3 and the arm unit 4 at the positions 15A and 15B is unlikely to change. Therefore, the HMD 1 can maintain a sufficient balance in the front-rear direction.

  When the HMD 1 is mounted, each portion of the mounting tool 5 fits in the shape of the user's head and securely holds the head, so that displacement of the mounting position is suppressed.

  The wearing tool 5 is closed on the front side and opened on the rear side. When the HMD 1 is mounted on the head, the ring opening side of the mounting tool 5 is widened, and the HMD 1 is mounted in such a manner that the side of the ring is pressed after the ring closing side is positioned. The positions 15 </ b> A and 15 </ b> B are located in front of the center of gravity position 25, i.e., closer to the ring closing side of the wearing tool 5. Since the HMD 1 has the image display unit 3 disposed on the ring-closing side, it is easy to position the image display unit 3 with respect to the head.

  In addition, this invention is not limited to the said embodiment, A various change is possible. The protrusions 66 and 67 having the holding grooves 68 and 69 may be omitted. There may be a plurality of pads 75 to 77, and the pads 75 to 77 may be intermittently arranged in the direction along the direction in which the wearing tool 5 is curved. Instead of the half mirror 35, a reflecting member that does not transmit light from the outside and substantially reflects the incident image light may be used. Instead of the half mirror 35, an optical path deflecting member such as a prism or a diffraction grating may be used. The coupling mechanisms 8 and 9 do not have to be ball joint movable parts. For example, any movable part having two or more rotational degrees of freedom by combining two or more hinges may be used. The mounting tool 5 may not be configured to be entirely curved. The curved portion of the mounting tool 5 may be a part of the mounting tool 5. The direction A is not limited to the direction along the left-right direction, and may be any direction that passes from the inside of the region 10 to the outside through the position 15A or the position 15B.

  The mounting tool 5 may be annular. That is, there may be a portion extending between the position 11 and the position 13 as well as the middle front portion 53 extending between the position 12 and the position 14. Alternatively, like the HMD 101 shown in FIG. 7, the wearing tool 105 may have a substantially annular shape with the front side opened. That is, the mounting tool 105 may have a portion that opens between the position 12 and the position 14 and extends between the position 11 and the position 13.

  When the orientation of the arm unit 4 and the image display unit 3 with respect to the mounting tool 5 is changed by the movement of the coupling mechanisms 8 and 9, the position 25 of the center of gravity is changed. Even if the position 25 of the center of gravity of the mounting tool 5 is changed, it is preferable that the positions 15A and 15B are located between the distal end portion 61 and the position 25 of the center of gravity in the front-rear direction. For this purpose, the mounting tool 5 may be able to adjust the position 25 of the center of gravity of the HMD 1 by the position and size of the pads 76 and 77.

  In the above embodiment, the front-rear direction corresponds to the “first direction” of the present invention. The left-right direction corresponds to the “second direction” of the present invention. The vertical direction corresponds to the “third direction” of the present invention. The position 11 corresponds to the “first position” of the present invention. The position 12 corresponds to the “second position” of the present invention. The position 13 corresponds to the “third position” of the present invention. The position 14 corresponds to the “fourth position” of the present invention. The position 16 corresponds to the “fifth position” of the present invention. The position 17 corresponds to the “sixth position” of the present invention. The positions 15A and 15B correspond to “specific positions” in the present invention. The position 21 corresponds to the “center position in the second direction” of the present invention. The position 25 corresponds to the “position of the center of gravity” of the present invention. The right part 51 corresponds to the “first part” of the present invention. The left part 52 corresponds to the “second part” of the present invention. The middle front portion 53 corresponds to the “third portion” of the present invention. The right rear portion 55 corresponds to a “fourth portion” of the present invention. The right front portion 54 corresponds to the “fifth portion” of the present invention. The left rear portion 57 corresponds to the “sixth portion” of the present invention. The left front portion 56 corresponds to a “seventh portion” of the present invention.

  The image display unit 3 corresponds to the “image display device” of the present invention. The upper end portion 4A corresponds to the “one end portion” of the present invention. The lower end 4B corresponds to the “other end” of the present invention. The connecting mechanism 8 corresponds to the “first connecting mechanism” of the present invention. The connecting mechanism 9 corresponds to the “second connecting mechanism” of the present invention. The pads 76 and 77 correspond to the “first contact portion” of the present invention. The pad 75 corresponds to a “second contact portion” of the present invention.

1 HMD
3 Image display part 4 Arm part 4A Upper end part 4B Lower end part 5 Wearing tool 8 Connection mechanism 9 Connection mechanism 10 Area | region 11, 12, 13, 14, 15A, 15B,
16, 17, 21, 25 Position 51 Right portion 52 Left portion 53 Middle front portion 54 Right front portion 55 Right rear portion 56 Left front portion 57 Left rear portion 61 Tip 75, 76, 77 Pad

Claims (10)

An wearing tool having a portion that is formed in an open or closed ring and that curves in a convex shape in a first direction and a second direction orthogonal to the first direction;
An image display device for displaying an image;
One end portion is an arm portion arranged on one side of the third direction orthogonal to the first direction and the second direction from the other end portion, and the one end portion is connected to a specific position of the wearing tool, The other end includes an arm connected to the image display device,
The wearing tool is a position on the one side or the other side in the second direction with respect to a center position in the second direction of the wearing tool, and in the first direction, the one side in the first direction of the wearing tool. A head-mounted display having the specific position between a position of a tip portion which is an end portion of the display device and a position of a center of gravity of the wearing tool to which the image display device and the arm portion are coupled.   The wearing tool has a length in the third direction on a surface facing an area surrounded by the curved shape of the wearing tool in a portion on the other side in the first direction from the position of the center of gravity. The head mounted display according to claim 1, wherein a first abutting portion that is longer than a length in the third direction at a portion on one side in the first direction from the position of the center of gravity is provided. In the part of the wearing tool, the part on the one side in the first direction with respect to the position of the center of gravity has a constant length in the third direction,
The wearing tool has a portion in which the length in the third direction gradually increases from one side to the other side in the first direction on the other side in the first direction than the position of the center of gravity. The head mounted display according to claim 1 or 2.   The mounting tool is characterized in that, in the first direction, a first distance between the specific position and the position of the center of gravity is shorter than a second distance between the position of the tip portion and the specific position. The head mounted display according to any one of claims 1 to 3. It is a part of the wearing tool including the tip part, and at least a part of the wearing tool part on the one side in the first direction from the position of the center of gravity is surrounded by the curved shape of the wearing tool. A second abutment portion is provided on the surface of the wearing tool facing in the area,
The said mounting tool has the said specific position between the position which provided the said 2nd contact part of the said mounting tool in the said 1st direction, and the position of the said gravity center. The head mounted display in any one. A first coupling mechanism that couples the specific position of the wearing tool and the one end of the arm part with the arm part having a degree of freedom of rotation of two or more axes with respect to the wearing tool;
A second connecting mechanism for connecting the image display device and the other end of the arm portion in a state where the image display device has a degree of freedom of rotation of two or more axes with respect to the arm portion;
The head-mounted display according to claim 1, wherein the arm portion has a constant length between the one end portion and the other end portion. The wearing tool is
A first portion extending between a first position and a second position located on one side of the first direction relative to the first position;
A third position located in one of the second directions with respect to the first position, and a position in one of the second directions with respect to the second position, and in the first direction with respect to the third position. A second portion extending between a fourth position located on one side;
A third portion extending between at least one of the first position and the third position and between the second position and the fourth position and continuing to each of the first portion and the second portion. And
The head mount according to any one of claims 1 to 6, wherein at least a part is curved in a convex shape toward an outside of a region surrounded by the first part, the second part, and the third part. display. The first part is
A fourth portion extending between the first position and a fifth position located on the one side in the first direction and the other side in the second direction from the first position;
A fifth portion extending between the fifth position and the second position located on the one side in the first direction and the one side in the second direction from the fifth position;
The second part is
A sixth portion extending between the third position and a sixth position located on the one side in the first direction and the one side in the second direction from the third position;
The seventh portion extending between the sixth position and the fourth position located on the one side in the first direction and the other side in the second direction with respect to the sixth position. 8. The head mounted display according to 7.   The said third part of the said mounting tool extends between the said 2nd position and the said 4th position, It continues to each of a said 1st part and a said 2nd part, The Claim 7 or 8 characterized by the above-mentioned. Head mounted display. A mounting tool for mounting an image display device for displaying an image,
A first portion extending between a first position and a second position located on one side in the first direction relative to the first position;
A third position located in one of the second directions perpendicular to the first direction with respect to the first position; and a third position located in one of the second directions with respect to the second position; and from the third position A second portion extending between a fourth position located on one side of the first direction,
A third portion extending between at least one of the first position and the third position and between the second position and the fourth position and continuing to each of the first portion and the second portion. And
At least a portion is curved convexly toward the outside of the region surrounded by the first portion, the second portion and the third portion;
One end portion of the arm portion is located on one side in the third direction orthogonal to the first direction and the second direction from the other end portion, and the one end portion of the arm portion to which the image display device is connected to the other end portion. The specific position to be connected is a position on one side or the other side in the second direction with respect to the center position in the second direction, and in the first direction, a tip that is an end portion on the one side in the first direction And a position of the center of gravity in the first direction when the image display device and the arm unit are connected.

Images