JP6465134B2 - Head mounted display and image display device - Google Patents

Description

  The present invention relates to a head mounted display and an image display device that can be mounted on a user's head.

  Conventionally, a head mounted display that can be mounted on a user's head is known. For example, the image providing apparatus described in Patent Literature 1 includes a support member included in a headset and an optical system casing. In the image providing device, the ball joint extends downward from the support member and is connected to the optical system casing. The optical system casing can be moved in the horizontal direction with respect to the support member by a ball joint.

Japanese Patent No. 4363929

  In the conventional image providing device, the ball shaft of the ball joint extends in the vertical direction. For this reason, the optical system casing is configured to move mainly in the horizontal direction and has a narrow movable range in the vertical direction. Further, the optical system casing moves in the horizontal direction around the ball axis, but the position in contact with the user's face is also included in the movable range. For this reason, when mounted on the user's head, the optical system casing cannot be disposed in a range where the optical system casing interferes with the user's face. Therefore, there is a problem that the usable movable range becomes narrow.

  An object of the present invention is to provide a head mounted display and an image display device that widen the usable movable range.

A head-mounted display according to a first aspect of the present invention is mounted on a user's head and is ejected from an end in a third direction that extends in the second direction and is opposite to the second direction. A display housing that allows a user to visually recognize image light as a virtual image, an arm portion that extends from the mounting tool to the display housing, a first ball joint that connects the mounting tool and the arm portion, and the display housing A second ball joint that connects the arm portion with a protruding portion that protrudes in a direction that intersects the second direction with respect to the second direction side from the end portion in the third direction; A first ball stud including a first rod portion and a first sphere portion provided at one end of the first rod portion; and a first ball joint included in the first ball joint. Slidably supported so that the first rod portion passes through. A first socket having a first hole portion, a second ball stud including a second rod portion and a second sphere portion provided at one end of the second rod portion and included in the second ball joint; A second socket that is included in the second ball joint, slidably supports the second sphere portion, and has a second hole portion through which the second rod portion passes, wherein the first rod portion is The third direction of the display housing at the first position, which is the position of the display housing when the second rod portion is positioned at the center of the second hole, and located at the center of the first hole. A position of the end of the virtual plane that is parallel to the direction perpendicular to the intersecting direction and the second direction and perpendicular to the center of the outer peripheral surface of the wearing tool, and the direction in which the image light is emitted. The third direction of the display casing at the second position, which is the position of the display casing that is parallel to each other A first rotation angle that is farther from the mounting tool than the position of the end portion and rotates from a position where the first rod portion is in the center of the first hole portion to a position where it contacts the end portion of the first hole portion. Is the same as a second rotation angle in which the second rod portion rotates from a position in the center of the second hole portion to a position in contact with the end portion of the second hole portion. The position of the end of the display case in the third direction when the display case is in the first position is mounted from the position of the end of the display case in the third direction when the display case is in the second position Far from the ingredients. The second position is a position of the display housing where the virtual plane and the direction in which the image light is emitted are parallel. When the display housing is located at the second position, it is assumed that the end portion of the display housing in the third direction is located in front of the line of sight when the user wears the head mounted display. The first position is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. For this reason, the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion is the same as the second position or the second position. Compared to the case closer to the wearing tool, the movable range of the display housing in the direction away from the wearing tool is wide, and the movable range of the display housing in the direction approaching the wearing tool is narrow. That is, the movable range of the display housing in the direction away from the face is wide, and the movable range of the display housing in the direction approaching the face is narrow. Therefore, the usable movable range of the display housing in the direction away from the face is widened. In addition, since the first rotation angle and the second rotation angle of the head mounted display are the same, the display housing is displayed to the user as compared with the case where the first rotation angle and the second rotation angle are different. It is possible to easily grasp the movable range of the body. In addition, since the first rotation angle and the second rotation angle are the same angle, the first hole portion of the first socket and the second hole portion of the second socket have the same diameter, There is a high possibility that the socket and the same part can be made. Therefore, compared with the case where it is not the same component, possibility that cost reduction can be attained by component commonality becomes high.

A head-mounted display according to a second aspect of the present invention is equipped with a mounting tool that can be mounted on a user's head, and is ejected from an end in a third direction that extends in the second direction and is opposite to the second direction. A display housing that allows a user to visually recognize image light as a virtual image, an arm portion that extends from the mounting tool to the display housing, a first ball joint that connects the mounting tool and the arm portion, and the display housing A second ball joint that connects the arm portion with a protruding portion that protrudes in a direction that intersects the second direction with respect to the second direction side from the end portion in the third direction; A first ball stud including a first rod portion and a first sphere portion provided at one end of the first rod portion; and a first ball joint included in the first ball joint. Slidably supported so that the first rod portion passes through. A first socket having a first hole portion, a second ball stud including a second rod portion and a second sphere portion provided at one end of the second rod portion and included in the second ball joint; A second socket that is included in the second ball joint, slidably supports the second sphere portion, and has a second hole portion through which the second rod portion passes, wherein the first rod portion is The third direction of the display housing at the first position, which is the position of the display housing when the second rod portion is positioned at the center of the second hole, and located at the center of the first hole. A position of the end of the virtual plane that is parallel to the direction perpendicular to the intersecting direction and the second direction and perpendicular to the center of the outer peripheral surface of the wearing tool, and the direction in which the image light is emitted. The third direction of the display casing at the second position, which is the position of the display casing that is parallel to each other The first rod portion rotates in a direction to move the display housing closer to the mounting tool than the position of the end portion, and comes into contact with the end portion of the first hole, and the display The display housing at the third position, which is the position of the display housing when the second rod portion rotates in a direction to bring the housing closer to the wearing tool and contacts the end of the second hole portion The position of the end portion in the third direction is closer to the wearing tool than the position of the end portion in the third direction of the display housing at the second position. The position of the end of the display case in the third direction when the display case is in the first position is mounted from the position of the end of the display case in the third direction when the display case is in the second position Far from the ingredients. The second position is a position of the display housing where the virtual plane and the direction in which the image light is emitted are parallel. When the display housing is located at the second position, it is assumed that the end portion of the display housing in the third direction is located in front of the line of sight when the user wears the head mounted display. The first position is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. For this reason, the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion is the same as the second position or the second position. Compared to the case closer to the wearing tool, the movable range of the display housing in the direction away from the wearing tool is wide, and the movable range of the display housing in the direction approaching the wearing tool is narrow. That is, the movable range of the display housing in the direction away from the face is wide, and the movable range of the display housing in the direction approaching the face is narrow. Therefore, the usable movable range of the display housing in the direction away from the face is widened. In addition, since the head mounted display allows the user to adjust the display housing from the second position to a position closer to the wearing tool, even if manufacturing errors are taken into account, the display of the display housing is positioned in front of the user's line of sight. The end portions in the three directions can be easily positioned.

In the head cloak display, in the movable range of the end portion in the third direction of the display housing centering on the first sphere portion, the end portion of the display housing in the third direction at the second position. The first angle between the position and the position of the end in the third direction of the display casing at the third position is the position of the end of the display casing in the third direction at the second position. And a second angle between the first position and the position of the end in the third direction of the display housing. In this case, the usable movable range of the display housing in the direction away from the face is wider than when the first angle is equal to or greater than the second angle .

  An image display device according to a first aspect of the present invention is a display casing that extends in a second direction and allows a user to visually recognize image light emitted from an end in a third direction opposite to the second direction as a virtual image. An arm portion extending from the mounting tool that can be mounted on the user's head to the display housing, a first ball joint that connects the mounting tool and the arm portion, and the third direction of the display housing A second ball joint that connects the arm portion with a projecting portion that protrudes in a direction intersecting the second direction and is located on the second direction side of the end portion of the first ball joint. A first ball stud having a first rod portion and a first sphere portion provided at one end of the first rod portion; and included in the first ball joint so that the first sphere portion can slide. A first soot having a first hole through which the first rod passes. Included in the second ball joint, and a second ball stud having a second rod portion and a second sphere portion provided at one end of the second rod portion, and included in the second ball joint. A second socket having a second hole portion through which the second rod portion passes, and the first rod portion at the center of the first hole portion. The position of the end portion in the third direction of the display housing at the first position, which is the position of the display housing when the second rod portion is positioned at the center of the second hole portion, is The display casing that is parallel to a direction orthogonal to the intersecting direction and a direction orthogonal to the second direction and that is parallel to a virtual surface orthogonal to the center of the outer peripheral surface of the wearing tool and a direction in which the image light is emitted. From the position of the end in the third direction of the display housing at the second position, which is the position of The first turning angle at which the first rod portion rotates far from the position where the first rod portion is in the center of the first hole portion to the position where the first rod portion contacts the end portion of the first hole portion is such that the second rod portion is It is the same as the second rotation angle that rotates from a position at the center of the second hole portion to a position that contacts the end portion of the second hole portion. The position of the end of the display case in the third direction when the display case is in the first position is mounted from the position of the end of the display case in the third direction when the display case is in the second position Far from the ingredients. The second position is a position of the display housing where the virtual plane and the direction in which the image light is emitted are parallel. When the display housing is located at the second position, it is assumed that the end portion of the display housing in the third direction is located in front of the line of sight when the user wears the head mounted display. The first position is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. For this reason, the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion is the same as the second position or the second position. Compared to the case closer to the wearing tool, the movable range of the display housing in the direction away from the wearing tool is wide, and the movable range of the display housing in the direction approaching the wearing tool is narrow. That is, the movable range of the display housing in the direction away from the face is wide, and the movable range of the display housing in the direction approaching the face is narrow. Therefore, the usable movable range of the display housing in the direction away from the face is widened. In addition, since the first rotation angle and the second rotation angle are the same in the image display device, the display case is displayed to the user as compared with the case where the first rotation angle and the second rotation angle are different. It is possible to easily grasp the movable range of the body. In addition, since the first rotation angle and the second rotation angle are the same angle, the first hole portion of the first socket and the second hole portion of the second socket have the same diameter, There is a high possibility that the socket and the same part can be made. Therefore, compared with the case where it is not the same component, possibility that cost reduction can be attained by component commonality becomes high.
An image display device according to a second aspect of the present invention is a display housing that extends in the second direction and allows the user to visually recognize the image light emitted from the end in the third direction opposite to the second direction as a virtual image. An arm portion extending from the mounting tool that can be mounted on the user's head to the display housing, a first ball joint that connects the mounting tool and the arm portion, and the third direction of the display housing A second ball joint that connects the arm portion with a projecting portion that protrudes in a direction intersecting the second direction and is located on the second direction side of the end portion of the first ball joint. A first ball stud having a first rod portion and a first sphere portion provided at one end of the first rod portion; and included in the first ball joint so that the first sphere portion can slide. A first soot having a first hole through which the first rod passes. Included in the second ball joint, and a second ball stud having a second rod portion and a second sphere portion provided at one end of the second rod portion, and included in the second ball joint. A second socket having a second hole portion through which the second rod portion passes, and the first rod portion at the center of the first hole portion. The position of the end portion in the third direction of the display housing at the first position, which is the position of the display housing when the second rod portion is positioned at the center of the second hole portion, is The display casing that is parallel to a direction orthogonal to the intersecting direction and a direction orthogonal to the second direction and that is parallel to a virtual surface orthogonal to the center of the outer peripheral surface of the wearing tool and a direction in which the image light is emitted. From the position of the end in the third direction of the display housing at the second position, which is the position of The direction in which the first rod portion rotates and contacts the end of the first hole portion in a direction far from the display housing toward the mounting tool, and the display housing approaches the mounting tool When the second rod portion rotates and contacts the end of the second hole, the end of the display housing in the third direction at the third position, which is the position of the display housing. The position is closer to the wearing tool than the position of the end in the third direction of the display housing at the second position. The position of the end of the display case in the third direction when the display case is in the first position is mounted from the position of the end of the display case in the third direction when the display case is in the second position Far from the ingredients. The second position is a position of the display housing where the virtual plane and the direction in which the image light is emitted are parallel. When the display housing is located at the second position, it is assumed that the end portion of the display housing in the third direction is located in front of the line of sight when the user wears the image display device. The first position is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. For this reason, the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion is the same as the second position or the second position. Compared to the case closer to the wearing tool, the movable range of the display housing in the direction away from the wearing tool is wide, and the movable range of the display housing in the direction approaching the wearing tool is narrow. That is, the movable range of the display housing in the direction away from the face is wide, and the movable range of the display housing in the direction approaching the face is narrow. Therefore, the usable movable range of the display housing in the direction away from the face is widened. In addition, the image display device allows the user to adjust the display housing from the second position to a position closer to the wearing tool. The end portions in the three directions can be easily positioned.

It is a top view of HMD1 in which the display housing | casing 11 exists in a 2nd position. It is a right view of HMD1 in which display case 11 is in the 2nd position. 4 is a perspective view of an arm unit 9. FIG. FIG. 10 is another perspective view of the arm portion 9. It is sectional drawing of the vicinity of the 1st ball joint 2 in which the 1st rod part 21A is located in the center of 1st hole 221D. It is a top view of HMD1 in which the display housing | casing 11 exists in a 1st position. It is a principal part enlarged view of HMD1 shown in FIG. It is a top view of HMD1 in which the display housing | casing 11 is in a 3rd position. It is a top view of HMD1 in which display case 11 is in the 4th position.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a head mounted display (hereinafter referred to as “HMD”) 1 is an optically transmissive see-through HMD. Light from the scenery in front of the user's eyes is directly guided to the user's eyes 80 by passing through the half mirror 51. The projection format of HMD1 is a virtual image projection type. The half mirror 51 deflects image light of an image displayed on a liquid crystal panel 562 described later, emits the image light in a first direction, and guides it to 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 a mounting tool 8, an arm unit 9, and a display housing 11.

  Hereinafter, the lower side, upper side, left side, and right side of FIG. 1 are defined as the front side, rear side, left side, and right side of HMD1, respectively, and the upper side and lower side of FIG. 2 are defined as the upper side and lower side of HMD1, respectively. explain. 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 upper side, the lower side, the right side, the left side, the front side, and the rear side, respectively, for the user wearing the wearing tool 8. The direction in which the half mirror 51 emits image light may be referred to as a first direction. One side of the directions orthogonal to the first direction (the right side of the HMD 1 when the HMD 1 is in the posture shown in FIG. 1) may be referred to as the second direction. The direction opposite to the second direction may be referred to as the third direction. The upper side, the lower side, the left side, the right side, the front side, and the rear side of the HMD 1 are defined with reference to the wearing tool 8. The first direction, the second direction, and the third direction are defined with reference to the display housing 11. Therefore, the relationship between the upper side, the lower side, the left side, the right side, the front side, and the rear side of the HMD 1 and the first direction, the second direction, and the third direction changes according to the position of the display housing 11 with respect to the wearing tool 8. To do.

  As shown in FIG.1 and FIG.2, the mounting tool 8 is comprised with the material which has flexibility, such as resin and a metal (for example, stainless steel). The mounting tool 8 is formed in an arc shape. The mounting tool 8 has a first portion 81 and second portions 82 and 83. Hereinafter, in order to facilitate understanding, the mounting tool 8 is described as being divided into a first part 81 and second parts 82 and 83. However, the mounting tool 8 includes the first part 81 and the second parts 82 and 83. It is not divided into each member of these, but is an integral member as a whole.

  Each of the first part 81 and the second parts 82 and 83 is a curved elongated plate-like member. The first part 81 is a part of the wearing tool 8 that extends in the left-right direction between the position 8A and the position 8B. The first portion 81 is curved in a convex shape on the front side. The position 8A is located on the left side of the center 84 of the wearing tool 8 and on the front side of the center in the front-rear direction. The position 8A is located on the leftmost side in the wearing tool 8. The position 8B is located on the right side of the center 84 in the left-right direction of the wearing tool 8 and on the front side of the center in the front-rear direction. The position 8B is located on the rightmost side in the wearing tool 8. The center 84 of the mounting tool 8 is, for example, the frontmost position of the mounting tool 8. The center 84 of the mounting tool 8 may be located at the center of the mounting tool 8 in the left-right direction. The second portion 82 is a portion of the wearing tool 8 that extends rearward from the position 8A. The second portion 83 is a portion of the wearing tool 8 that extends rearward from the position 8B. The second portions 82 and 83 each extend in a direction in which the rear ends approach each other. The wearing tool 8 is worn on the user's head with the first portion 81 and the second portions 82 and 83 in contact with the frontal, right and left heads of the user, respectively. The In this state, the first portion 81 extends in the left-right direction along the forehead of the user. In the following description, the region surrounded by the first portion 81 and the second portions 82 and 83 of the mounting tool 8 may be referred to as “the inner side of the mounting tool 8”, and the side opposite to the inner side of the mounting tool 8 is “ It may be referred to as “the outside of the wearing tool 8”.

  As shown in FIG. 1, the display housing 11 extending in the second direction has a half mirror 51 at the left end in FIG. More specifically, the display housing 11 includes a main body portion 12A and a protruding portion 12B. The main body 12A has a substantially rectangular parallelepiped shape with curved corners and extends in the second direction. The protruding portion 12B protrudes from the end portion on the second direction side of the main body portion 12A to the first direction side. A second ball joint 3 described later is connected to the second direction side of the end portion on the first direction side of the protruding portion 12B.

  Inside the main body 12A, a half mirror 51, a liquid crystal panel 562, a lens unit 53, and a control board (not shown) are provided. The half mirror 51 is a deflection member located at the end of the main body 12A in the third direction. The liquid crystal panel 562 is provided at the center of the main body 12A in the second direction. The liquid crystal panel 562 has a rectangular plate shape and has a display surface on the third direction side. The lens unit 53 is provided between the liquid crystal panel 562 and the half mirror 51.

The control board receives image data from an external device via a signal line (not shown). The control board displays an image corresponding to the received image data on the liquid crystal panel 562. The image light of the image displayed on the liquid crystal panel 562 is emitted in the third direction (see arrow 871). In the present invention, instead of the liquid crystal panel 562, a digital mirror device (DMD), an organic EL
Such a two-dimensional display device may be used. Furthermore, a retinal scanning type projection device (Retinal Scanning Display) that projects light two-dimensionally scanned onto the retina of the user may be used.

  The lens unit 53 includes a plurality of lenses. The lens unit 53 guides the image light emitted from the liquid crystal panel 562 to the half mirror 51. The half mirror 51 has a rectangular plate shape. The half mirror 51 extends obliquely so as to be positioned in the third direction as it goes in the first direction. The half mirror 51 can reflect the image light incident through the lens unit 53 in the first direction (see arrow 872). The left eye 80 of the user can visually recognize a virtual image based on the image light reflected in the first direction by the half mirror 51. The half mirror 51 can transmit external light incident from a direction opposite to the first direction in the first direction. The half mirror 51 is configured, for example, by 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%).

  In the present invention, a mirror reflection member that does not transmit incident image light in the third direction may be used instead of the half mirror 51 described above. In this case, external light incident from the direction opposite to the first direction does not pass through the reflecting member. Further, instead of the half mirror 51, a transmissive optical path deflecting member such as a prism or a diffraction grating may be used.

  As shown in FIGS. 1 and 2, the arm portion 9 is a member extending from the mounting tool 8 to the display housing 11. The arm unit 9 places the half mirror 51 of the display housing 11 in front of the left eye 80 of the user in a state where the wearing tool 8 is worn on the user's head. As shown in FIG. 2, the arm portion 9 extends from the mounting tool 8 in a direction in which the lower end portion is inclined forward with respect to the vertical direction. As shown in FIG. 1, the arm portion 9 is curved so that the center portion in the vertical direction swells in the right direction. The arm portion 9 is made of, for example, resin or metal.

  As shown in FIGS. 1, 3, and 4, the upper end portion of the arm portion 9 is provided with a cylindrical portion 93 that protrudes leftward. The left end portion of the cylindrical portion 93 is formed obliquely so as to be positioned on the right side toward the rear end. As shown in FIGS. 3 and 4, the right end portion of the first rod portion 21 </ b> A of the first ball stud 21, which will be described later, is disposed inside the cylindrical portion 93. On the left side of the lower end portion of the arm portion 9, a right end portion of a second rod portion 31A of the second ball stud 31 described later is disposed.

  As shown in FIG. 1, the mounting tool 8 and the upper end portion of the arm portion 9 are connected by a first ball joint 2. The display housing 11 and the lower end of the arm portion 9 are connected by the second ball joint 3.

A connection mode between the mounting tool 8 and the arm portion 9 will be described in detail. As shown in FIG. 1, a connecting member 7 is provided on the right front portion of the wearing tool 8. The connection member 7 is connected to the periphery of the first portion 81 by a screw or snap fit (not shown). A first socket 22 of the first ball joint 2 to be described later is connected to the mounting tool 8 by the connecting member 7. That is, the first socket 22 is provided on the mounting tool 8.

  The first ball joint 2 is made of, for example, a metal such as stainless steel, brass, titanium, or aluminum. As shown in FIG. 5, the first ball joint 2 includes a first ball stud 21 and a first socket 22. The first ball stud 21 has a first rod portion 21A and a first sphere portion 21B. The first sphere portion 21B is a spherical portion provided at the left end portion which is one end portion of the first rod portion 21A. The 1st socket 22 supports the 1st spherical body part 21B so that sliding is possible. Hereinafter, the first ball joint 2 will be described in detail.

  In the following description, the direction orthogonal to the outer peripheral surface 87 of the mounting tool 8 at the position where the connection member 7 and the first socket 22 are disposed in the mounting tool 8 is referred to as “orthogonal direction”. Of the orthogonal directions, the direction toward the inner side of the wearing tool 8 may be referred to as “inner orthogonal direction”, and the direction toward the outer side of the wearing tool 8 may be referred to as “outer orthogonal direction”. The outer side in the orthogonal direction is also a normal direction to the outer peripheral surface 87 of the wearing tool 8.

  As shown in FIG. 5, the first socket 22 has a first lid portion 221 and a first receiving portion 222. The first receiving part 222 has a bottom part 222A, a side part 222B, and a first contact part 222C. The bottom portion 222 </ b> A is a circular plate-like portion connected to the connection member 7.

  The side part 222B is a cylindrical part that extends outward in the orthogonal direction from the periphery of the bottom part 222A. A thread is formed on the outer surface of the side portion 222B. The bottom portion 222A and the side portion 222B are integrally formed of, for example, a resin material. The first contact portion 222C is disposed in a portion surrounded by the side portion 222B. The first contact portion 222C has a concave shape corresponding to the surface shape of the first sphere portion 21B. The first contact portion 222C is made of an elastically deformable elastic member (for example, a resin material such as rubber or urethane) that functions as a buffer material. The first contact portion 222 </ b> C contacts a portion on the inner side in the orthogonal direction of the first sphere portion 21 </ b> B of the first ball stud 21.

  The first lid portion 221 includes a wall portion 221A, a side portion 221B, and a first contact portion 221C. The wall portion 221A is a circular plate portion. The pair of surfaces having a large area of the wall portion 221A face in the orthogonal direction. The diameter of the wall portion 221A is slightly larger than the outer diameter of the side portion 222B of the first receiving portion 222. A circular first hole 221D that passes through the wall 221A in the orthogonal direction is provided at the center of the wall 221A. The first hole portion 221D is a part of the wall portion 221A that defines a circular hole through which the first rod portion 21A passes. The first sphere portion 21B is disposed on the inner side in the orthogonal direction with respect to the first hole portion 221D.

  The first contact portion 221C is disposed in the gap between the first ball stud 21 and the first hole portion 221D. The first contact portion 221C is made of a slidable resin material (for example, a fluororesin or polyacetal). The first contact portion 221C is in contact with the outer portion of the first sphere portion 21B in the orthogonal direction. The first contact portion 221C may not be provided. In the following description, when the first rod portion 21A abuts on the first hole portion 221D, the first rod portion 21A may abut on the first hole portion 221D via the first contact portion 221C. You may contact | abut directly to the hole part 221D. Therefore, in the following description, when the first rod portion 21A abuts on the first hole portion 221D, the first rod portion 21A abuts on the first hole portion 221D via the first contact portion 221C, The meaning of the case of directly contacting the one hole portion 221D is included.

The side portion 221B is a cylindrical portion that extends inward in the orthogonal direction from the periphery of the wall portion 221A. The wall portion 221A and the side portion 221B are integrally formed of, for example, a resin material. A thread is formed on the inner surface of the side portion 221B. The thread of the side part 221B fits into the thread of the side part 222B of the first receiving part 222. As a result, the first lid portion 221 is screwed into the first receiving portion 222.

  When the first rod portion 21A is located at the center of the first hole 221D, the first rod portion 21A extends outward in the orthogonal direction from the first spherical portion 21B supported by the first socket 22, and the first bent portion 23 extends in a direction different from the orthogonal direction and is supported by the arm portion 9. In the present embodiment, the first rod portion 21A is bent rearward in the first bent portion 23 with respect to the orthogonal direction. An end 24 of the first rod 21 </ b> A opposite to the first sphere 21 </ b> B is fixed to the arm 9 by a screw 41. In the example shown in FIG. 5, the bending angle R31 of the first rod portion 21A in the first bending portion 23 is 30 degrees as an example.

  The first ball joint 2 can move the arm portion 9 in an arbitrary direction with respect to the mounting tool 8 by sliding the first spherical portion 21B and the first rod portion 21A with respect to the first socket 22. it can. The movable range of the arm portion 9 is limited by the first rod portion 21A coming into contact with the first hole portion 221D.

  A connection mode between the display housing 11 and the arm unit 9 will be described in detail. In the present embodiment, as an example, the second ball joint 3 is a component common to the first ball joint 2, and thus has the same configuration as the first ball joint 2. Therefore, the description is omitted as appropriate. As shown in FIG.1 and FIG.6, the 2nd ball joint 3 is the site | part of the 2nd direction side rather than the half mirror 51 in the display housing | casing 11, More specifically, the edge part by the side of the 1st direction of the protrusion part 12B. And the arm part 9 are connected.

  As shown in FIG. 7, the second ball joint 3 includes a second ball stud 31 and a second socket 32. The second ball stud 31 has a second rod portion 31A and a second sphere portion 31B. The second sphere portion 31B is a spherical portion provided at one end of the second rod portion 31A. The second socket 32 is provided in the display housing 11. The 2nd socket 32 is located in the 2nd direction side of the edge part of the 1st direction side of the protrusion part 12B. Similar to the first socket 22 (see FIG. 5), the second socket 32 supports the second sphere 31B so as to be slidable.

  The second socket 32 has a second lid portion 321 and a second receiving portion (not shown). The second lid portion 321 and the second receiving portion (not shown) have the same configuration as the first lid portion 221 and the first receiving portion 222 of the first ball joint 2 shown in FIG.

  The second lid portion 321 includes a wall portion 321A, a side portion 321B, and a second contact portion (not shown). The wall portion 321A is a circular plate portion. The pair of surfaces having a large area of the wall portion 321A face the second direction. A circular second hole 321D that penetrates the wall 321A in the second direction is provided at the center of the wall 321A. The second hole portion 321D is a part of the wall portion 321A that defines a circular hole through which the second rod portion 31A passes. The second hole 321D has the same diameter as the first hole 221D (see FIG. 5). The second sphere part 31B is arranged on the third direction side with respect to the second hole part 321D.

A second contact portion (not shown) is arranged in the gap between the second ball stud 31 and the second hole portion 321D. The shape of the second contact portion is the same as that of the first contact portion 221C (see FIG. 5). The second contact portion is made of a slidable resin material (for example, a fluororesin or polyacetal). The second contact portion is in contact with a portion on the second direction side in the first sphere portion 21B. Note that the second contact portion may not be provided. In the following description, when the second rod portion 31A abuts on the second hole portion 321D, the second rod portion 31A may abut on the second hole portion 321D via the second contact portion, or the second hole You may contact | abut directly on the part 321D. Therefore, in the following description, when the second rod portion 31A abuts on the second hole portion 321D, the second rod portion 31A abuts on the second hole portion 321D via the second contact portion, and the second The meaning of the case of directly contacting the hole 321D is included.

  The side portion 321B is a cylindrical portion extending in the third direction from the periphery of the wall portion 321A. The wall portion 321A and the side portion 321B are integrally formed of, for example, a resin material. A thread is formed on the inner surface of the side portion 321B. The thread of the side part 321B fits into the thread of the second receiving part. As a result, the second lid portion 321 is screwed into the second receiving portion.

  When the second rod portion 31A is positioned at the center of the second hole portion 321D (see FIGS. 6 and 7), the second rod portion 31A is second to the second sphere portion 31B supported by the second socket 32. The second bent portion 33 extends in a direction different from the second direction and is supported by the arm portion 9. In the present embodiment, in the posture of the HMD 1 shown in FIGS. 1, 2, and 6 to 9, the second rod portion 31 </ b> A extends from the arm portion 9 and moves away from the mounting tool 8 at the second bent portion 33. And is connected to the second sphere portion 31B supported by the second socket 32. The direction away from the wearing tool 8 indicates an arbitrary direction including a component in the direction of leaving. For example, an example of the direction away from the wearing tool 8 is the front direction. In this case, an arbitrary direction including the forward component (for example, the left front direction and the right front direction) is included in a range closer to the direction away from the wearing tool 8. As an example, the bending angle R32 (see FIG. 7) of the second rod portion 31A in the second bending portion 33 is 30 degrees. The bending angle R31 (see FIG. 5) of the first rod portion 21A in the first bending portion 23 and the bending angle R32 (see FIG. 7) of the second rod portion 31A in the second bending portion 33 are the same angle. Note that the end of the second rod 31A opposite to the second sphere 31B is fixed to the lower end of the arm 9 by a screw (not shown).

  The second ball joint 3 moves the display housing 11 in an arbitrary direction with respect to the arm portion 9 by sliding the second spherical portion 31B and the second rod portion 31A with respect to the second socket 32. Can do. The movable range of the display housing 11 is limited by the second rod portion 31A coming into contact with the second hole portion 321D.

  Further, an angle at which the first rod portion 21A rotates from a position at the center of the first hole portion 221D to a position at which the first rod portion 21A contacts the end portion of the first hole portion 221D is defined as a first rotation angle R41 (see FIG. 5). . An angle at which the second rod portion 31A rotates from a position at the center of the second hole portion 321D to a position at which the second rod portion 31A contacts the end portion of the second hole portion 321D is defined as a second rotation angle R42 (see FIG. 6). The first rotation angle R41 and the second rotation angle R42 are the same angle (for example, 20 degrees).

  An outline of the operation of the HMD 1 will be described. First, the user wears the wearing tool 8 of the HMD 1 on the head. The user holds the display housing 11 with the left hand and adjusts the position so that the half mirror 51 is arranged in front of the left eye 80 (see FIG. 1). Output of image data is started from an external device not shown. A control board (not shown) receives image data via a communication line (not shown). The control board causes the liquid crystal panel 562 to display an image corresponding to the received image data. The image light of the image displayed on the liquid crystal panel 562 passes through a plurality of lenses included in the lens unit 53 in the third direction. The half mirror 51 reflects image light toward the first direction. The image light enters the left eye 80 of the user. Further, the half mirror 51 transmits the external light incident from the front side to the rear side. In this way, the user recognizes the virtual image superimposed on the front scene with respect to the display housing 11 of the HMD 1.

The movable range of the display housing 11 and the half mirror 51 will be described. In the following description, as shown in FIGS. 6 and 7, the first rod portion 21A is located at the center of the first hole portion 221D, and the second rod portion 31A is located at the center of the second hole portion 321D. The position of the display housing 11 is referred to as a first position. As shown in FIG. 1, the position of the display housing 11 where the virtual plane 86 and the first direction in which the image light is emitted is parallel is referred to as a second position. The virtual surface 86 is a surface extending in the vertical direction orthogonal to the first direction and the second direction, and is a surface orthogonal to the center 84 of the outer peripheral surface 87 of the wearing tool 8. In the present embodiment, the virtual surface 86 is also parallel to the front-rear direction. The center 84 of the outer peripheral surface 87 of the mounting tool 8 is the center of the left / right symmetric mounting tool 8 and is a part disposed at the center of the left and right eyeballs of the user. However, for example, even if the wearing tool 8 is not bilaterally symmetric, a portion assumed to be arranged at the center of the left and right eyeballs of the user is the center 84 of the outer peripheral surface 87 of the wearing tool 8. When the display housing 11 is located at the second position, it is assumed that the half mirror 51 is located in front of the line of sight when the user wears the HMD 1.

  As shown in FIG. 8, the first rod portion 21 </ b> A rotates in a direction to bring the display housing 11 closer to the wearing tool 8 and comes into contact with the end portion (the front end portion in FIG. 8) of the first hole portion 221 </ b> D. In addition, the display housing in the case where the second rod portion 31A rotates in the direction in which the display housing 11 is brought closer to the mounting tool 8 and comes into contact with the end portion (the rear end portion in FIG. 8) of the second hole portion 321D. The position of the body 11 is called the third position. As shown in FIG. 9, the first rod portion 21 </ b> A rotates in a direction to move the display housing 11 away from the wearing tool 8 and comes into contact with the end portion (the rear end portion in FIG. 9) of the first hole portion 221 </ b> D. In addition, the display housing in the case where the second rod portion 31A rotates in the direction of separating the display housing 11 from the mounting tool 8 and comes into contact with the end portion (the right end portion in FIG. 9) of the second hole portion 321D. The position of the body 11 is called the fourth position.

  The display housing 11 in the present embodiment is movable between a third position (see FIG. 8) and a fourth position (see FIG. 9) around the first position (see FIG. 6). There is a second position (see FIG. 1) in the movable range between the first position (see FIG. 6) and the third position (see FIG. 8). This movable range is defined by a range in which the first rod portion 21A in the first hole portion 221D can move and a range in which the second rod portion 31A in the second hole portion 321D can move.

  The position P1 (see FIG. 6) of the half mirror 51 when the display housing 11 is in the first position is greater than the position P2 (see FIG. 1) of the half mirror 51 when the display housing 11 is in the second position. It is far from the wearing tool 8. The position P3 (see FIG. 8) of the half mirror 51 when the display housing 11 is in the third position is mounted from the position P2 (see FIG. 1) of the half mirror 51 when the display housing 11 is in the second position. Close to ingredient 8.

  FIG. 7 shows the half mirror positions P1 to P3 when the display housing 11 is in the first position to the third position, and the half mirror 51 when the display housing 11 is in the fourth position (see FIG. 9). The position P4 of FIG.

  As shown in FIG. 7, in the movable range of the half mirror 51 centered on the first sphere portion 21B, the position P2 of the half mirror 51 when the display housing 11 is at the second position and the display housing 11 are The angle between the half mirror 51 and the position P3 in the three positions is referred to as a first angle R11. The angle between the position P2 of the half mirror 51 when the display housing 11 is at the second position and the position P1 of the half mirror 51 when the display housing 11 is at the first position is referred to as a second angle R12. . The angle between the position P4 of the half mirror 51 when the display housing 11 is at the fourth position and the position P1 of the half mirror 51 when the display housing 11 is at the first position is referred to as a third angle R13. . The first angle R11 is smaller than the second angle R12. The third angle R13 is larger than each of the first angle R11 and the second angle R12.

As described above, the HMD 1 in the present embodiment is configured. The position P1 of the half mirror 51 when the display housing 11 is at the first position (see FIGS. 6 and 7) is the position of the half mirror 51 when the display housing 11 is at the second position (see FIG. 1). It is far from the wearing tool 8 than P2. As described above, when the display housing 11 is positioned at the second position, it is assumed that the half mirror 51 is positioned in front of the line of sight of the left eye 80 when the user wears the HMD 1 (see FIG. 1). ). The first position is the position of the display housing 11 when the first rod portion 21A is located at the center of the first hole portion 221D and the second rod portion 31A is located at the center of the second hole portion 321D (see FIG. 6 and FIG. 7). For this reason, the position of the display housing 11 when the first rod portion 21A is located at the center of the first hole portion 221D and the second rod portion 31A is located at the center of the second hole portion 321D is the second position. The movable range of the display housing 11 in the direction away from the mounting tool 8 is wider and the movable range of the display housing 11 in the direction approaching the mounting tool 8 than when the same or the second position is closer to the mounting tool. Is narrow. That is, the movable range of the display housing 11 in the direction away from the user's face is wide, and the movable range of the display housing 11 in the direction approaching the face is narrow. Therefore, the usable movable range of the display housing 11 in the direction away from the face is widened.

  Further, as shown in FIG. 5, the first socket 22 is provided in the mounting tool 8. The first rod portion 21A extends in the orthogonal direction from the first sphere portion 21B supported by the first socket 22 when the first rod portion 21A is located at the center of the first hole portion 221D, and the first bent portion 21A The portion 23 is bent in a direction different from the orthogonal direction and is supported by the arm portion 9. For this reason, compared with the case where the 1st bending part 23 is not provided, it is easy to position the display housing | casing 11 in the direction in which the 1st bending part 23 bends.

  As shown in FIG. 7, the second socket 32 is provided in the display housing 11. The second rod portion 31 </ b> A extends from the arm portion 9, bends toward the direction away from the mounting tool 8 at the second bending portion 33, and is connected to the second sphere portion 31 </ b> B supported by the second socket 32. For this reason, compared with the case where the second bent portion 33 is not provided in the second rod portion 31A, the first rod portion 21A is positioned at the center of the first hole portion 221D, and the second rod portion 31A is the second hole. In the case of being located at the center of the part 321D, the position of the display housing 11 is far from the wearing tool 8. Therefore, the movable range of the display housing 11 in the direction away from the face is wider and the display housing 11 is movable in the direction approaching the face than when the second bent portion 33 is not provided in the second rod portion 31A. The range is narrow. Therefore, the usable movable range of the display housing 11 in the direction away from the face is widened.

  Further, the bending angle R31 (see FIG. 5) of the first rod portion 21A in the first bending portion 23 is the same as the bending angle R32 (see FIG. 7) of the second rod portion 31A in the second bending portion 33. For this reason, compared with the case where bending angle R31 and bending angle R32 are different angles, possibility that the 1st ball stud 21 and the 2nd ball stud 31 can be made into the same component becomes high. Therefore, compared with the case where it is not the same component, possibility that cost reduction can be attained by component commonality becomes high.

  Further, the first rotation angle R41 (see FIG. 5) for rotating the first rod portion 21A from the position at the center of the first hole portion 221D to the position contacting the end portion of the first hole portion 221D is the second rotation angle R41. This is the same as the second rotation angle R42 (see FIG. 7) in which the rod portion 31A rotates from a position at the center of the second hole portion 321D to a position in contact with the end portion of the second hole portion 321D. Therefore, the HMD 1 can make it easier for the user to grasp the movable range of the display housing 11 than when the first rotation angle R41 and the second rotation angle R42 are different. Further, since the first rotation angle R41 and the second rotation angle R42 are the same angle, the first hole 221D of the first socket 22 and the second hole 321D of the second socket 32 have the same diameter, The possibility that the first socket 22 and the second socket 32 can be made the same component is increased. Therefore, compared with the case where it is not the same component, possibility that cost reduction can be attained by component commonality becomes high.

In addition, if the third position (see FIG. 8) is the same position as the second position (see FIG. 1), depending on how the mounting tool 8 is mounted on the user's head, crossing of parts, manufacturing errors, or the like. The half mirror 51 may not be positioned in front of the user's line of sight. In the present invention, the position P3 of the half mirror 51 when the display housing 11 is at the third position (see FIG. 8) is the position P2 of the half mirror 51 when the display housing 11 is at the second position (see FIG. 8). 1), closer to the wearing tool 8. For this reason, the HMD 1 can allow the user to adjust the position of the display housing 11 from the second position to a position closer to the mounting tool 8, so that the mounting state of the mounting tool 8 with respect to the user's head, component tolerance , or The half mirror 51 can be easily positioned in front of the user's line of sight even with manufacturing errors and the like.

  As shown in FIG. 7, the first angle R11 is smaller than the second angle R12. For this reason, compared with the case where 1st angle R11 is more than 2nd angle R12, the movable range which the display housing | casing 11 can utilize in the direction away from a face becomes wide.

  In the above embodiment, the liquid crystal panel 562 is an example of the “display unit” in the present invention. The half mirror 51 is an example of the “ejecting part” in the present invention.

  In addition, this invention is not limited to said embodiment, A various change is possible. For example, the first angle R11 illustrated in FIG. 7 may be equal to or greater than the second angle R12. The position P3 (see FIG. 8) of the half mirror 51 when the display housing 11 is in the third position is the same as the position P2 (see FIG. 1) of the half mirror 51 when the display housing 11 is in the second position. It may be a position. A first rotation angle R41 (see FIG. 5) for rotating the first rod portion 21A from a position at the center of the first hole portion 221D to a position where the first rod portion 221D contacts the end portion of the first hole portion 221D is the second rod portion. It may be different from the second rotation angle R42 (see FIG. 7) in which 31A rotates from a position at the center of the second hole 321D to a position in contact with the end of the second hole 321D.

  Further, the bending angle R31 (see FIG. 5) of the first rod portion 21A in the first bending portion 23 may be different from the bending angle R32 (see FIG. 7) of the second rod portion 31A in the second bending portion 33. . Further, the first hole 221D and the second hole 321D are not limited to a circle. The first hole portion 221D and the second hole portion 321D may be anything as long as the center can be defined in plan view (for example, a point-symmetric shape such as a rectangle or an ellipse).

  Further, the second socket 32 (see FIG. 7) may be provided in the arm unit 9 instead of the display housing 11. In this case, for example, the second rod portion 31 </ b> A extends from the second sphere portion 31 </ b> B disposed on the arm portion 9, bends in the direction away from the mounting tool 8 at the second bending portion 33, and is connected to the display housing 11. May be.

  Further, the first socket 22 (see FIG. 5) may be provided on the arm portion 9 instead of the mounting tool 8. In this case, for example, the first rod portion 21 </ b> A extends in the orthogonal direction orthogonal to the outer peripheral surface 87 of the wearing tool 8, bends in a direction different from the orthogonal direction at the first bent portion 23, and is supported by the first socket 22. May be connected to the first sphere portion 21B.

The mounting tool 8 may have a shape different from the above-described embodiment as long as the display housing 11 can be held via the arm unit 9. For example, a spectacle-type frame, a headphone-type frame, or the like may be used as the wearing tool. Or it is good also considering what is mounted | worn with a user's head, such as a helmet, a hat , and general glasses instead of a dedicated mounting tool.

The second rod portion 31A is separated from the mounting tool 8 when the first rod portion 21A is located at the center of the first hole portion 221D and the second rod portion 31A is located at the center of the second hole portion 321D. It is not necessary to bend toward the direction. For example, the second rod portion 31A may extend linearly without being bent. Further, both the first rod portion 21A and the second rod portion 31A may not be bent and may extend linearly. Also in this case, the first rod portion 21A is located at the center of the first hole portion 221D, and the first rod portion 31A is located at the center of the second hole portion 321D. The position P1 (see FIGS. 5 and 7) of the half mirror 51 at the position is a half at the second position, which is the position of the display housing 11 where the virtual plane 86 and the first direction from which the image light is emitted are parallel. What is necessary is just to be far from the mounting tool 8 from the position P2 (see FIG. 1) of the mirror 51. Further, the HMD 1 may be configured not to include the wearing tool 8. In this case, the member including the arm portion 9 and the display housing 11 corresponds to the “image display device” of the present invention.

1 HMD
2 First ball joint 3 Second ball joint 8 Attaching tool 9 Arm portion 11 Display housing 21 First ball stud 21A First rod portion 21B First sphere portion 22 First socket 23 First bent portion 31 Second ball stud 31A Second rod portion 31B Second sphere portion 32 Second socket 33 Second bent portion 51 Half mirror 86 Virtual surface 221D First hole portion 321D Second hole portion 562 Liquid crystal panel

Claims (5)

A wearing device that can be worn on the user's head;
A display housing that extends in the second direction and allows the user to visually recognize the image light emitted from the end in the third direction opposite to the second direction as a virtual image;
An arm portion extending from the wearing tool to the display housing;
A first ball joint connecting the mounting tool and the arm part;
A second ball joint that connects the arm and the protruding portion that protrudes in a direction intersecting the second direction from the end in the third direction of the display housing. ,
A first ball stud included in the first ball joint and having a first rod portion and a first sphere portion provided at one end of the first rod portion;
A first socket included in the first ball joint, slidably supporting the first sphere portion, and having a first hole portion through which the first rod portion passes;
A second ball stud included in the second ball joint and having a second rod portion and a second sphere portion provided at one end of the second rod portion;
A second socket included in the second ball joint, slidably supporting the second sphere portion, and having a second hole portion through which the second rod portion passes;
The display housing at the first position, which is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. The position of the end of the body in the third direction is parallel to a direction orthogonal to the intersecting direction and the second direction , and a virtual surface orthogonal to the center of the outer peripheral surface of the wearing tool, and the image light Than the position of the end in the third direction of the display housing at the second position, which is the position of the display housing that is parallel to the direction in which the light is emitted,
The first pivot angle at which the first rod portion pivots from a position at the center of the first hole portion to a position in contact with the end portion of the first hole portion is such that the second rod portion is the second hole. A head-mounted display having the same rotation angle as that of a rotation from a position at the center of the portion to a position in contact with the end of the second hole. A wearing device that can be worn on the user's head;
A display housing that extends in the second direction and allows the user to visually recognize the image light emitted from the end in the third direction opposite to the second direction as a virtual image;
An arm portion extending from the wearing tool to the display housing;
A first ball joint connecting the mounting tool and the arm part;
A second ball joint that connects the arm and the protruding portion that protrudes in a direction intersecting the second direction from the end in the third direction of the display housing. ,
A first ball stud included in the first ball joint and having a first rod portion and a first sphere portion provided at one end of the first rod portion;
A first socket included in the first ball joint, slidably supporting the first sphere portion, and having a first hole portion through which the first rod portion passes;
A second ball stud included in the second ball joint and having a second rod portion and a second sphere portion provided at one end of the second rod portion;
A second socket included in the second ball joint, slidably supporting the second sphere portion, and having a second hole portion through which the second rod portion passes;
The display housing at the first position, which is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. The position of the end of the body in the third direction is parallel to a direction orthogonal to the intersecting direction and the second direction , and a virtual surface orthogonal to the center of the outer peripheral surface of the wearing tool, and the image light Than the position of the end in the third direction of the display housing at the second position, which is the position of the display housing that is parallel to the direction in which the light is emitted,
The first rod portion rotates in a direction to bring the display housing closer to the wearing tool and contacts the end of the first hole, and the first housing moves in a direction to bring the display housing closer to the wearing tool. The position of the end in the third direction of the display housing at the third position, which is the position of the display housing when the two-rod portion rotates and contacts the end of the second hole, The head-mounted display, which is closer to the wearing tool than the position of the end portion in the third direction of the display housing in the second position. In the movable range of the end in the third direction of the display casing around the first sphere, the position of the end in the third direction of the display casing at the second position, and the third The first angle between the position of the display casing in the third direction at the position is the position of the end of the display casing in the third direction at the second position and the first position. The head mounted display according to claim 2 , wherein the head mounted display is smaller than a second angle with respect to a position of an end portion in the third direction of the display casing.   Image light that extends in the second direction and is emitted from the end of the third direction opposite to the second direction is a virtual image.
Display housing to be visually recognized by the user,
  An arm portion extending from the wearing tool that can be worn on the user's head to the display housing;
  A first ball joint connecting the mounting tool and the arm part;
  A second ball joint that connects the arm and the protruding portion that protrudes in a direction intersecting the second direction from the end in the third direction of the display housing. ,
  A first ball stud included in the first ball joint and having a first rod portion and a first sphere portion provided at one end of the first rod portion;
  A first socket included in the first ball joint, slidably supporting the first sphere portion, and having a first hole portion through which the first rod portion passes;
  A second ball stud included in the second ball joint and having a second rod portion and a second sphere portion provided at one end of the second rod portion;
  A second socket included in the second ball joint, slidably supporting the second sphere portion, and having a second hole portion through which the second rod portion passes;
With
  The display housing at the first position, which is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. The position of the end of the body in the third direction is parallel to a direction orthogonal to the intersecting direction and the second direction, and a virtual surface orthogonal to the center of the outer peripheral surface of the wearing tool, and the image light Than the position of the end in the third direction of the display housing at the second position, which is the position of the display housing that is parallel to the direction in which the light is emitted,
  The first pivot angle at which the first rod portion pivots from a position at the center of the first hole portion to a position in contact with the end portion of the first hole portion is such that the second rod portion is the second hole. An image display device having the same rotation angle as that of a rotation from a position at the center of the portion to a position in contact with the end of the second hole.   A display housing that extends in the second direction and allows the user to visually recognize the image light emitted from the end in the third direction opposite to the second direction as a virtual image;
  An arm portion extending from the wearing tool that can be worn on the user's head to the display housing;
  A first ball joint connecting the mounting tool and the arm part;
  A second ball joint that connects the arm and the protruding portion that protrudes in a direction intersecting the second direction from the end in the third direction of the display housing. ,
  A first ball stud included in the first ball joint and having a first rod portion and a first sphere portion provided at one end of the first rod portion;
  A first socket included in the first ball joint, slidably supporting the first sphere portion, and having a first hole portion through which the first rod portion passes;
  A second ball stud included in the second ball joint and having a second rod portion and a second sphere portion provided at one end of the second rod portion;
  A second socket included in the second ball joint, slidably supporting the second sphere portion, and having a second hole portion through which the second rod portion passes;
With
  The display housing at the first position, which is the position of the display housing when the first rod portion is located at the center of the first hole portion and the second rod portion is located at the center of the second hole portion. The position of the end of the body in the third direction is parallel to a direction orthogonal to the intersecting direction and the second direction, and a virtual surface orthogonal to the center of the outer peripheral surface of the wearing tool, and the image light Than the position of the end in the third direction of the display housing at the second position, which is the position of the display housing that is parallel to the direction in which the light is emitted,
  The first rod portion rotates in a direction to bring the display housing closer to the wearing tool and contacts the end of the first hole, and the first housing moves in a direction to bring the display housing closer to the wearing tool. The said table | surface in the 3rd position which is a position of the said display housing | casing when a 2 stick | rod part rotates and contact | abuts to the edge part of said 2nd hole part.
The position of the end portion in the third direction of the display case is closer to the wearing tool than the position of the end portion in the third direction of the display case in the second position.

Images