JP2017028634A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a preset state, such as a position or an angle, of a display part when the display part is retracted and returned.SOLUTION: A display device comprises: a display part; a fitting unit fitted to a head of a user; an adjustment part attached with the display part and that adjusts a state of the display part to the fitting unit; a rotation holding part that holds the adjustment part rotatably and mounted on the fitting unit; and a drive part that rotates the rotation holding part to switch between a usage state of the display part and a retreat state of the display part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device.

  2. Description of the Related Art Conventionally, a head-mounted display device that includes a display unit that presents information in front of the user's eyes is known. In general, such a display device includes an adjustment mechanism that adjusts the position and angle of the display unit according to the user in order to make the information presented on the display unit easier to see. Such a display device may be equipped with a mechanism for retracting and returning the display unit from the user's eyes so that the display unit can be removed from the user's field of view (for example, Patent Document 1). 2). When the display unit is retracted from the front of the eye using such a mechanism and then returned to the front of the eye again, the position and angle of the display unit after the return may be changed as compared with those before the retraction. In this case, the user is forced to adjust the display unit again. Patent Document 1 aims to eliminate such inconvenience, and when the display unit is retracted from the front of the eye and then returned, it is only necessary to move the display unit using the display unit retracting and returning mechanism. It is assumed that fine adjustment of the position of is unnecessary. Further, Patent Document 2 makes it easy to adjust the position of the display unit, and allows the display unit to be retracted out of the field of view when the display unit is not used.

JP 2008-311849 A JP 2001-228435 A

  However, in Patent Document 1 and Patent Document 2, when the display unit is retracted or returned, a member related to adjustment of the position or angle of the display unit is gripped and operated. There was a possibility that the position and angle would change, and there was room for improvement.

  In one aspect, it is an object of the display device disclosed in this specification to maintain a state such as a preset position and angle of a display unit when the display unit is retracted or returned.

  The display device disclosed in the present specification includes a display unit, a mounting unit that is mounted on a user's head, an adjustment unit that is mounted with the display unit and adjusts a state of the display unit with respect to the mounting unit, and the adjustment. A rotation holding unit attached to the mounting unit, and a drive unit that rotates the rotation holding unit to switch between a use state of the display unit and a retracted state of the display unit. Prepare. Here, the state of the display unit with respect to the mounting unit includes the position and angle of the display unit with respect to the mounting unit.

  The display device disclosed in the present specification can maintain a state such as a preset position and angle of the display unit when the display unit is retracted or returned.

FIG. 1A is a perspective view showing the display device of the first embodiment in which the display unit is in a use state, and FIG. 1B is an explanation showing the display device of the first embodiment in which the display unit is in a retracted state. FIG. FIG. 2 is a perspective view of a display unit, an adjustment unit, and a drive unit included in the display device of the first embodiment. FIG. 3 is an explanatory diagram illustrating the internal structure of the drive unit included in the display device according to the first embodiment. FIG. 4 is an explanatory diagram schematically showing a connection state between the rotation holding unit and the adjustment unit in the first embodiment. FIG. 5A is an explanatory diagram illustrating a state of the driving unit when the display unit is used, and FIG. 5B is an explanatory diagram illustrating a state of the driving unit when the display unit is retracted. FIG. 6 is a perspective view of the display device of the second embodiment. FIG. 7 is a perspective view of a display unit, an adjustment unit, and a drive unit included in the display device of the second embodiment. FIG. 8 is an explanatory diagram showing the internal structure of the drive unit provided in the display device of the second embodiment. FIG. 9 is an explanatory diagram showing the internal structure of the drive unit provided in the display device of the second embodiment. FIG. 10 is an explanatory diagram schematically showing a connection state between the rotation holding unit and the adjustment unit in the second embodiment. FIGS. 11A-1 and 11A-2 are explanatory diagrams schematically showing the state of the driving unit in the usage state of the display unit, and FIGS. 11B-1 and 11B-2 are shown. ) Is an explanatory diagram schematically showing the state of the drive unit in the transition state from the use state of the display unit to the retracted state, and FIGS. 11C-1 and 11C-2 illustrate the retracted state of the display unit. It is explanatory drawing which shows typically the mode of the drive part in. 12A is an explanatory diagram illustrating a display device in which the display unit is in use, FIG. 12B is an explanatory diagram illustrating the display device in which the display unit is in a retracted state, and FIG. It is explanatory drawing which shows the display apparatus which a display part is in a return state.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, in the drawings, the dimensions, ratios, and the like of each part may not be shown so as to completely match the actual ones. Further, depending on the drawings, components that are actually present may be omitted for convenience of explanation, or dimensions may be exaggerated from the actual drawing.

(First embodiment)
First, a first embodiment will be described with reference to the drawings. FIG. 1A is a perspective view showing the display device of the first embodiment in which the display unit is in a use state, and FIG. 1B is an explanation showing the display device of the first embodiment in which the display unit is in a retracted state. FIG. FIG. 2 is a perspective view of a display unit, an adjustment unit, and a drive unit included in the display device of the first embodiment. FIG. 3 is an explanatory diagram illustrating the internal structure of the drive unit included in the display device according to the first embodiment. FIG. 4 is an explanatory diagram (vertical sectional view) schematically showing a connection state between the rotation holding unit and the adjustment unit in the first embodiment. FIG. 5A is an explanatory diagram illustrating a state of the driving unit when the display unit is used, and FIG. 5B is an explanatory diagram illustrating a state of the driving unit when the display unit is retracted.

  The display device 1 includes a display unit 2 and a mounting unit 3. In addition, the display device 1 includes an adjustment unit 10, a rotation holding unit 22, and a driving unit 20. The display unit 2 includes a display held in a housing, and is arranged in front of the user's eyes to provide various information to the user through the display. The mounting part 3 is provided by forming a belt-shaped member in a ring shape so that it can be mounted on the user's head. Moreover, the mounting part 3 is provided with the arch-shaped part which connects the part located in a left and right temporal region through a user's top part when a user mounts on a head. In addition, the shape of the mounting part 3 should just be a shape which can be mounted | worn on a user's head, and is not limited to the shape shown in figure. For example, the ring shape may be partially open. A camera 30 supported by a camera support unit 31 is attached to the mounting unit 3.

  The adjustment unit 10 includes the display unit 2 at one end. The adjustment unit 10 adjusts the state of the display unit 2 with respect to the mounting unit 3, that is, the state of the user wearing the mounting unit 3 with respect to the head of the user wearing the display device 1. Here, the state of the display unit 2 with respect to the mounting unit 3 includes a position in the front-rear direction, a position in the vertical direction, a position in the left-right direction, and an angle with respect to the mounting unit 3 of the display unit 2. When the X axis, the Y axis, and the Z axis of the display device 1 are set as shown in FIGS. 1A and 1B, the state of the display unit 2 with respect to the mounting unit 3 is the direction along each axis. Movement, rotation around the Y axis, and rotation around the Z axis. Therefore, the state of the display unit 2 with respect to the mounting unit 3 is set by these five degrees of freedom. In the present embodiment, rotation around the X axis is not included, but rotation around the X axis may be included.

  Referring to FIG. 2, the adjustment unit 10 includes a first member 11, a second member 12, a third member 13, and a fourth member 14. The first member 11 is a block-shaped member. The display unit 2 is attached to the first member 11 so as to be rotatable around an axis AX1 that coincides with the Y-axis direction.

  The second member 12 is an arm-shaped member. The first member 11 is attached to one end of the second member 12 so as to be rotatable around an axis AX2 that coincides with the Z-axis direction.

  The third member 13 is a substantially rectangular member. The other end of the second member 12 is attached to one end of the third member 13 so as to be rotatable about an axis AX3 that coincides with the Y-axis direction.

  The fourth member 14 includes a columnar shaft support portion 14a and an arm portion 14b extending in the radial direction from the side surface of the shaft support portion 14a. The other end portion of the third member 13 is attached to the arm portion 14b so as to be rotatable around an axis AX4 that coincides with the Y-axis direction.

  The second member 12 and the third member 13 are relatively rotatable about the axis AX3 as a rotation axis. The fourth member 14 and the third member 13 are in a relatively rotatable state with the axis AX4 as a rotation axis. The axes AX3 and AX4 are both in the Y-axis direction and are in a parallel relationship. Therefore, the third member 13 can move the second member 12 along the X-axis direction without changing the angle with respect to the horizontal plane.

  Referring to FIGS. 3 to 5B, the fourth member 14 includes a convex portion 14a1 at the upper end of the shaft support portion 14a and a convex portion 14a2 at the lower end of the shaft support portion 14a. The convex portions 14a1 and 14a2 are used for pivotally supporting the fourth member 14 in a rotatable manner. The convex portions 14a1 and 14a2 are provided along the axis AX5 that coincides with the Z-axis direction. Accordingly, the fourth member 14 is installed so as to be rotatable around the axis AX5.

  The rotation holding unit 22 holds the adjustment unit 10 rotatably. Specifically, the fourth member 14 located on the most proximal side of the adjustment unit 10 is rotatably held. The rotation holding unit 22 is incorporated in the driving unit 20 that rotates the rotation holding unit 22 and switches between a use state of the display unit 2 and a retracted state of the display unit 2. The rotation holding unit 22 is attached to the mounting unit 3 via a case 21 included in the drive unit 20. In other words, the rotation holding unit 22 is attached to the mounting unit 3 by being incorporated in the case 21 attached to the mounting unit 3. The rotation holding unit 22 is not involved in adjustment of the position and angle of the display unit 2 by the user.

Referring to FIGS. 3 to 5B, the rotation holding unit 22 includes a top plate portion 22a.
A convex portion 22a1 is provided on the upper surface side of the top plate portion 22a. A concave portion 22a2 is provided on the lower surface side of the top plate portion 22a. The rotation holding part 22 includes a bottom plate part 22b. A convex portion 22b1 is provided on the lower surface side of the bottom plate portion. A concave portion 22b2 is provided on the upper surface side of the bottom plate portion 22b. The convex portion 22a1, the concave portion 22a2, the convex portion 22b1, and the concave portion 22b2 are provided along the axis AX5 that coincides with the Z-axis direction.

  If FIG. 4 is referred, convex part 14a1 with which the 4th member 14 is provided will be engage | inserted rotatably by recessed part 22a2. A convex portion 14a2 included in the fourth member 14 is rotatably fitted in the concave portion 22b2. Thereby, the rotation holding part 22 hold | maintains the 4th member 14, and by extension, the adjustment part 10 rotatably. In addition, the positional relationship between the rotation holding unit 22 and the fourth member 14 is maintained by the frictional force between them. That is, when the fourth member 14 is rotated about the axis AX5 when the position of the display unit 2 is changed, the user can overcome the frictional force between the rotation holding unit 22 and the fourth member 14 with the force of the fourth member. 14 is rotated. The display unit 2 can be moved along the Y-axis direction by a combination of the rotation of the fourth member 14 around the axis AX5 and the rotation of the first member 11 around the axis AX2. At this time, by combining the rotation of the third member 13 around the axis AX3 and the rotation around the axis AX4, the position along the X-axis direction of the display unit 2, that is, the distance to the user can be maintained.

  The case 21 that houses the rotation holding portion 22 includes a recess 21a1 in the top plate portion 21a, and a recess 21b1 in the bottom plate portion 21b. The recesses 21a1 and 21b1 are provided along an axis AX5 that coincides with the Z-axis direction. A convex portion 22a1 included in the rotation holding portion 22 is rotatably fitted in the concave portion 21a1. A convex portion 22b1 included in the rotation holding portion 22 is rotatably fitted in the concave portion 21b1. Thereby, the rotation holding | maintenance part 22 is attached with respect to case 21 so that rotation is possible. The use state of the display unit 2 and the retracted state of the display unit 2 are switched by the rotation operation of the rotation holding unit 22 with respect to the case 21. That is, by rotating the rotation holding unit 22 with respect to the case 21, the display unit 2 can be used or retracted without moving the movable unit included in the adjustment unit 10.

  The rotation holding portion 22 includes a side wall portion 22c that connects the top plate portion 22a and the bottom plate portion 22b. The side wall portion 22c is provided with a guide pin 22c1 that extends laterally. The guide pin 22 c 1 is engaged with a spiral groove 23 a provided on the outer peripheral surface of the cylindrical cam 23 provided in the case 21. The central axis of the cylindrical cam 23 extends along the Y-axis direction. The distal end portion of the guide pin 22c1, that is, the portion engaged with the spiral groove 23a moves in an arc shape around the axis AX5. Therefore, the shape of the outer peripheral surface of the cylindrical cam 23 is also an arc shape with the axis AX5 as the center. Specifically, when the cylindrical cam 23 is cut along a horizontal plane including the rotation center axis L1, the shape of the edge where the outer peripheral surface and the cut surface intersect with each other becomes an arc shape with the axis AX5 as the center. Then, this circular arc is rotated 360 ° around the rotation center axis L1 to form a drum shape, thereby forming the outer shape of the cylindrical cam 23. The spiral groove 23a is formed on the drum-shaped outer peripheral surface. As a result, when the guide pin 22c1 rotates about the axis AX5, the depth at which the tip of the guide pin 22c1 is engaged with the spiral groove 23a is always substantially constant. When the spiral groove 23a is installed in the case 21 so as to face the side wall portion 22c provided with the guide pin 22c1, the spiral groove 23a is inclined downward from the outside (the side far from the user) to the inside (the side close to the user). It is set to be. That is, when the spiral groove 23a provided on the outer peripheral surface of the cylindrical cam 23 is viewed from the guide pin 22c1 side, the spiral where the position of the end of the spiral groove 23a located on the side far from the user is located on the side close to the user. It is higher than the position of the end of the groove 23a. An operation lever 24 is connected to the cylindrical cam 23. The cylindrical cam 23 and the operation lever 24 are included in the drive unit 20 that rotates the rotation holding unit 22 and switches between the use state of the display unit 2 and the retracted state of the display unit 2. The user can rotate the cylindrical cam 23 by operating the operation lever 24, and thus rotate the rotation holding unit 22. That is, the display unit 2 can be in a retracted state or in a used state without touching the adjusting unit 10. Thereby, when the display unit 2 is retracted or returned, the preset state of the display unit 2 can be maintained.

  The operation lever 24 is a plate-like member, and a rotation center axis L1 is set at one end thereof. The operation lever 24 is rotatably installed with the rotation center axis L1 as a rotation axis. The rotation center axis L1 also coincides with the rotation center axis of the cylindrical cam 23. 3 and 5A, when the display unit 2 is in use, the operation lever 24 extends in the horizontal direction. A fixing portion 25 for the cylindrical cam 23 is provided in the case 21. The fixing unit 25 fixes the cylindrical cam 23 in the use state and the retracted state of the rotation holding unit 22. The fixing portion 25 includes a spring member 25a and a ball member 25b. The spring member 25a biases the ball member 25b toward the cylindrical cam 23 side. The cylindrical cam 23 is provided with a first concave portion 23b1 and a second concave portion 23b2 that suppress the rotation of the cylindrical cam 23 by engaging the ball member 25b. The ball member 25b when the operation lever 24 is in the horizontal state is engaged with the first recess 23b1. Thereby, the rotation of the cylindrical cam 23 is suppressed. The ball member 25b when the operation lever 24 is pushed down is engaged with the second recess 23b2. Thereby, the rotation of the cylindrical cam 23 is suppressed. By providing such a fixing portion 25, rattling of the display portion 2 can be suppressed.

  Referring to FIG. 1A, the rotation center axis of the cylindrical cam 23, i.e., the rotation center axis L <b> 1 is parallel to the virtual horizontal plane F set in the mounting unit 3 and extends in the front-back direction of the mounting unit 3. It is set to be orthogonal to the center line L2. By setting the rotation center axis of the cylindrical cam 23 in this way, when the operating lever 24 connected to the cylindrical cam 23 is operated, the mounting portion 3 rotates or tilts around the user's head. This can be suppressed.

  Next, the use of such a display device 1 will be described. The user wears the wearing unit 3 on the head. And as shown to FIG. 1 (A), it will be in a use condition and the position and angle of the display part 2 located in front of eyes will be adjusted. At this time, the position and angle of the display unit 2 are adjusted by moving a movable unit included in the adjustment unit 10. That is, the operation lever 24 is maintained in a horizontal state, and the rotation holding unit 22 does not rotate.

  When the user wearing the display device 1 wants to retract the display unit 2 from the front of the eye, the user pushes down the operation lever 24 as indicated by an arrow 32a in FIG. Thereby, the cylindrical cam 23 rotates and the rotation holding | maintenance part 22 in the state which mounted the adjustment part 10 rotates like arrow 32b. At this time, the rotation holding unit 22 rotates with respect to the case 21, and the relationship between the rotation holding unit 22 and the fourth member 14 included in the adjustment unit 10 does not change. Thereby, the movable part included in the adjustment unit 10 does not move, and the position and angle of the display unit 2 once set in the adjustment unit 10 do not change.

  The user who has retracted the display unit 2 pushes up the operation lever 24 when returning the display unit 2 so that the display unit 2 can be used again. Thereby, the cylindrical cam 23 rotates and the rotation holding part 22 in the state holding the adjusting part 10 rotates. At this time, the rotation holding unit 22 rotates with respect to the case 21, and the relationship between the rotation holding unit 22 and the fourth member 14 included in the adjustment unit 10 does not change. Thereby, the movable part included in the adjustment unit 10 does not move, and the position and angle of the display unit 2 once set in the adjustment unit 10 do not change.

  As described above, when the display unit 2 is moved between the use state and the retracted state, the user only operates the operation lever 24 included in the drive unit 20 without touching the adjustment unit 10. At this time, only the relationship between the rotation holding unit 22 and the case 21 changes. Thereby, when the display unit 2 is retracted or returned, the preset state of the display unit 2 can be maintained. As a result, it is not necessary to adjust the position and angle again when the display unit 2 is returned to the front of the eye, and the usability of the display unit 1 is improved.

  In the present embodiment, when the display unit 2 is retracted or returned, the adjustment unit 10 is rotated on a substantially horizontal plane, but the rotation direction is not limited thereto. For example, the display unit 2 may be retracted above the user's head.

(Second Embodiment)
Next, a second embodiment will be described with reference to the drawings. FIG. 6 is a perspective view of the display device of the second embodiment. FIG. 7 is a perspective view of a display unit, an adjustment unit, and a drive unit included in the display device of the second embodiment. FIG. 8 is an explanatory diagram showing the internal structure of the drive unit provided in the display device of the second embodiment. FIG. 9 is an explanatory diagram showing the internal structure of the drive unit provided in the display device of the second embodiment. FIG. 10 is an explanatory diagram schematically showing a connection state between the rotation holding unit and the adjustment unit in the second embodiment. FIGS. 11A-1 and 11A-2 are explanatory diagrams schematically showing the state of the driving unit in the usage state of the display unit, and FIGS. 11B-1 and 11B-2 are shown. ) Is an explanatory diagram schematically showing the state of the drive unit in the transition state from the use state of the display unit to the retracted state, and FIGS. 11C-1 and 11C-2 illustrate the retracted state of the display unit. It is explanatory drawing which shows typically the mode of the drive part in. 12A is an explanatory diagram illustrating a display device in which the display unit is in use, FIG. 12B is an explanatory diagram illustrating the display device in which the display unit is in a retracted state, and FIG. It is explanatory drawing which shows the display apparatus which a display part is in a return state.

  The display device 51 according to the second embodiment includes an adjustment unit 60 instead of the adjustment unit 10 according to the first embodiment. Further, the display device 51 of the second embodiment includes a rotation holding unit 73 instead of the rotation holding unit 22 in the first embodiment. Furthermore, the display device 51 of the second embodiment includes a drive unit 70 instead of the drive unit 20 in the first embodiment. In addition, about the component which is common in 1st Embodiment, the same reference number is attached | subjected in drawing, The detailed description is abbreviate | omitted.

  The adjustment unit 60 includes the display unit 2 at one end. Referring to FIG. 7, the adjustment unit 60 includes a first member 61 and a second member 62. The first member 61 is common to the first member 11 in the first embodiment, and the display unit 2 is mounted so as to be rotatable around an axis AX1 that coincides with the Y-axis direction. The second member 62 is an arm-shaped member. The first member 61 is attached to one end of the second member 62 so as to be rotatable around an axis AX2 that coincides with the Z-axis direction. The adjustment unit 60 realizes rotation of the display unit 2 around the Y axis and rotation around the Z axis. In addition, the 2nd member 62 is provided with the convex part 62a in the edge part on the opposite side to the side in which the 1st member 61 is arrange | positioned. The convex portion 62a will be described later.

  Such an adjustment unit 60 is rotatably held by the rotation holding unit 73. The rotation holding unit 73 is rotatably mounted on a case provided in the mounting unit 3, specifically, the second case 72. The drive unit 70 rotates the rotation holding unit 73 in the horizontal direction to switch between the use state of the display unit 2 and the retracted state of the display unit 2.

  The drive unit 70 includes a first case 71 and a second case 72. The first case 71 is attached to the mounting portion 3, and the second case 72 is arranged inside the first case 71 so as to be slidable in a direction along the X-axis direction. Referring to FIG. 9, the second case 72 includes a top plate portion 72a, a bottom plate portion 72b, and a side wall portion 72c. The top plate portion 72a is provided with a convex portion 72a1. A convex portion 72b1 is provided on the bottom plate portion 72b. The bottom plate portion 72b is provided with a first attachment portion 72b2 to which one end portion of a spring member 74 described later is attached. The side wall portion 72c is provided with a groove portion 72c1 through which a shaft portion 75b included in the pinion portion 75 described later passes. In addition, the two side wall parts 72c are provided facing each other, and the groove part 72c1 is provided in each of the two side wall parts 72c. In addition, as shown in FIG. 8, a screw groove is formed in the shaft portion on the distal end side of the side wall portion 72c located on the outer side, that is, on the side away from the user's head, of the two side wall portions 72c. The adjustment dial 76 is screwed. The adjustment dial 76 is used to define the rotation range of the rotation holding unit 73. This will be described later. Inside the second case 72, a rack portion 72d is provided as shown in FIGS. The rack portion 72d is provided on the side wall portion 72c so as to extend along the X-axis direction.

  The rotation holding unit 73 includes a top plate portion 73a, a bottom plate portion 73b, and a side wall portion 73c. The top plate portion 73a is provided with a recess 73a1. The bottom plate portion 73b is provided with a recess 73b1. The convex portion 72a1 is rotatably fitted in the concave portion 73a1, and the convex portion 72b1 is rotatably fitted in the concave portion 73b1. The concave portions 73a1 and 73b1 and the convex portions 72a1 and 72b1 are all provided along the axis AX7 that coincides with the Z-axis direction. Thereby, the rotation holding part 73 can rotate around the Z axis. The rotation around the axis AX7 of the rotation holding unit 73 is combined with the rotation around the axis AX2 of the first member 61 to realize the movement of the display unit 2 along the Y-axis direction. That is, the rotation of the rotation holding unit 73 around the axis AX7 is used not only for retracting and returning the adjustment unit 60 but also for adjusting the position of the display unit 2. When the position of the display unit 2 is adjusted, the adjustment dial 76 is used. Since the rotation range of the rotation holding portion 73 is defined by using the adjustment dial 76, the rotation holding portion 73 can be returned to the original match.

  The bottom plate portion 73b is provided with a second attachment portion 73b2 to which the other end portion of the spring member 74 whose one end portion is attached to the first attachment portion 72b2 is attached. That is, the spring member 74 is included in the drive unit 70, and one end portion is attached to the first attachment portion 72 b 2 provided in the second case 72 and the other end portion is provided in the rotation holding portion 73. 2 It is attached to the attachment part 73b2. The spring member 74 is stretched so as to attract the second attachment portion 73b2 toward the first attachment portion 72b2. Here, the second attachment portion 73b2 is provided on the side away from the first attachment portion 72b2 with the axis AX7 serving as the rotation axis of the rotation holding portion 73 therebetween. By stretching the spring member 74 in this way, the rotation direction of the rotation holding portion 73 can be switched. When the display unit 2 is in use, the spring member 74 applies a force to the rotation holding unit 73 to rotate the rotation holding unit 73 counterclockwise with respect to the axis AX7 when viewed from above. On the other hand, when the display unit 2 is in the retracted state, the spring member 74 applies a force to the rotation holding unit 73 to rotate the rotation holding unit clockwise. The spring member 74 has a function of assisting the retracting operation and the returning operation of the display unit 2. The spring member 74 is an example of an elastic member.

  A view of the rotation holding unit 73 as seen from above is shown in FIG. Referring to FIG. 10, the side wall 73c is provided with a recess 73c1 at a position where the side walls 73c face each other. The recess 73c1 is provided along the axis AX6. The axis AX6 is set in parallel with the axis AX1. A convex part 62a included in the second member 62 is rotatably fitted in the concave part 73c1. By combining the rotation of the second member 62 around the axis AX6 and the rotation of the display unit 2 around the axis AX2, the movement of the display unit 2 along the Z-axis direction is realized.

  The side wall 73c is provided with an opening 73c2 for allowing the spring member 74 to pass therethrough and reaching the second mounting portion 73b2. The side wall portion 73c is provided with a stopper portion 73c3 protruding in the radial direction. The stopper portion 73c3 regulates the rotation range of the rotation holding portion 73. When the display unit 2 is in use, the stopper portion 73c3 contacts the distal end portion of the adjustment dial 76 provided on the outer side of the second case 72, that is, on the side wall portion 72c far from the user's head. Thereby, the rotation range of the rotation holding part 73 to which the rotational force is applied by the spring member 74 is restricted. Since the stopper portion 73c3 contacts the tip end portion of the adjustment dial 76 when the display portion 2 is in use, the movable range of the stopper portion 73c3 is changed by adjusting the insertion / removal of the adjustment dial 76. The user adjusts the position and angle of the display unit 2 when the display unit 2 is placed in front of the user with the stopper unit 73 c 3 in contact with the adjustment dial 76. Thereby, when the display unit 2 is returned from the retracted state to the used state, it can be returned to the original position. On the other hand, when the display unit 2 is in the retracted state, the stopper portion 73c3 contacts the inside of the second case 72, that is, the inner peripheral surface of the side wall portion 72c on the side close to the user's head. The rotation holding portion 73 is restricted in the rotation range as described above, and is in contact with either the side wall portion 72c of the second case 72 or the tip end portion of the adjustment dial 76 by the urging force of the spring member 74. It is said. Thereby, the use state and retreat state of the display unit 2 can be switched.

The display device 51 includes a pinion portion 75 that slides the second case 72 with respect to the first case 71 along the X-axis direction. The pinion portion 75 includes a gear portion 75a that meshes with the rack portion 72d, and a shaft portion 75b that supports the gear portion 75a.
Both end portions of the shaft portion 75b are supported by the first case 71, respectively. The shaft portion 75 b passes through a groove portion 72 c 1 provided in the second case 72 so that the second case 72 can slide relative to the first case 71. A knob portion 75b1 for rotating the pinion portion 75 and moving the second case 72 is provided at one end portion of the shaft portion 75b. The knob portion 75 b 1 is located outside the first case 71. The user can move the second case 72, and thus the display unit 2 provided in the adjustment unit 60, along the X-axis direction by rotating the knob 75b1. The second case 72, the rack portion 72d, and the pinion portion 75 are responsible for movement along the X-axis direction of the display unit 2, but are not included in the adjustment unit 60, unlike the first embodiment. In the second embodiment, the third member 13 and the fourth member 14 included in the first embodiment are equipped with the abolition.

  Next, the use of such a display device 51 will be described. The user wears the wearing unit 3 on the head. Then, the user adjusts the position and angle of the display unit 2 located in front of the eyes by operating the movable unit, the knob unit 75b1 and the adjustment dial 76 included in the adjustment unit 60. When the display unit 2 is in use as shown in FIG. 12A, the rotation holding unit 73 is moved by the spring member 74 as shown in FIGS. 11A-1 and 11A-2. A force that rotates in the direction of the arrow 81 is applied. Thereby, the stopper portion 73c3 is in a state of being in contact with the tip portion of the adjustment dial 76.

  From this state, as shown in FIG. 12 (B), when the user wants to retract the display unit 2 from the front of the eye, the user is as shown in FIGS. 11 (B-1) and 11 (B-2). The second member 62 is rotated in the direction of the arrow 82. At this time, the user may rotate the second member 62 to a position where the second mounting portion 73b2 slightly exceeds the position farthest from the first mounting portion 72b2. That is, if the second mounting portion 73b2 rotates to a position that exceeds the straight line connecting the first mounting portion 72b2 and the axis AX7, the rotation holding portion 73 is caused by the elastic force of the spring member 74 as shown in FIG. 11 (C-2), it rotates in the direction of arrow 83. Finally, the stopper portion 73c3 comes into contact with the second case 72.

  As shown in FIG. 12C, when the user who has retracted the display unit 2 returns the display unit 2 to use the display unit 2 again, if the user performs an operation reverse to that at the time of retraction. Good. When the operation of returning the display unit 2 is performed, the stopper portion 73c3 automatically rotates to a position where it comes into contact with the tip of the adjustment dial 76. The position where the stopper portion 73c3 contacts the tip end portion of the adjustment dial 76 is a position where the user has adjusted the display portion 2 in advance. Thus, the display part 2 can return to the original position.

  Thus, in the display device 51 of the present embodiment, since the elastic force of the spring member 74 assists the rotation of the rotation holding unit 73, the user need only perform a slight operation. That is, the user only needs to move the second member 62 slightly when the display unit 2 is retracted or returned, and the second mounting portion 73b2 is slightly positioned farthest from the first mounting portion 72b2. If it exceeds, the second member 62 may not be touched. Therefore, there is a low possibility that the position and angle of the display unit 2 are unintentionally changed. Here, if the tension of the spring member 74 is set to be weaker than the force for moving the movable part included in the adjustment part 60, the position of the display part 2 when the display part 2 is retracted and returned, The possibility that the angle changes unintentionally can be further reduced.

  The movement of the display unit 2 along the X-axis direction is performed by the operation of the knob 75b1 and is separated from the rotation operation of the rotation holding unit 73. Therefore, during the retraction and return operations of the display unit 2, Unintentional displacement of the display unit 2 in the X-axis direction is avoided.

  As described above, according to the present embodiment, when the display unit 2 is retracted or returned, the preset state of the display unit 2 can be maintained. As a result, it is not necessary to adjust the position and angle again when the display unit 2 is returned to the front of the eye, and the usability of the display unit 1 is improved.

  Although the preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the specific embodiment, and various modifications, within the scope of the gist of the present invention described in the claims, It can be changed.

DESCRIPTION OF SYMBOLS 1,51 Display apparatus 2 Display part 3 Mounting part 10, 60 Adjustment part 20 Drive part 22, 73 Rotation holding part 23 Cylindrical cam 23a Spiral groove 24 Operation lever 25 Fixing part F Virtual horizontal plane L1 Rotation center axis L2 Front and rear center line 73c3 Stopper Part 74 Spring member 75 Pinion part 75a Gear part 75b Shaft part 75b1 Knob part 76 Adjustment dial

Claims (8)

A display unit;
A wearing part to be worn on the user's head;
An adjustment unit that is mounted with the display unit and adjusts a state of the display unit with respect to the mounting unit;
While holding the adjustment unit rotatably, a rotation holding unit attached to the mounting unit,
A drive unit that rotates the rotation holding unit and switches between a use state of the display unit and a retracted state of the display unit;
A display device comprising: The rotation holding unit is rotatably mounted on a case provided in the mounting unit, and includes a guide pin.
The display device according to claim 1, wherein the driving unit includes a cylindrical cam having a spiral groove with which the guide pin is engaged, and an operation lever that rotates the cylindrical cam.   The display device according to claim 2, wherein the driving unit includes a fixing unit that fixes the cylindrical cam in a use state and a retracted state of the rotation holding unit.   4. The display device according to claim 2, wherein a rotation center axis of the cylindrical cam is parallel to a virtual horizontal plane set in the mounting portion and orthogonal to a front-rear center line extending in the front-rear direction of the mounting portion. The rotation holding unit is rotatably mounted on a case provided in the mounting unit,
One end of the drive unit is attached to a first mounting portion provided in the case, and the other end is separated from the first mounting portion with the rotation holding portion being separated from the rotation holding portion by a rotation axis of the rotation holding portion. The display device according to claim 1, wherein the display device is an elastic member attached to a second attachment portion provided on the side.   The display device according to claim 5, wherein the rotation holding portion includes a stopper portion that regulates a rotation range.   The display device according to claim 6, further comprising an adjustment dial that is provided so as to be movable in and out with respect to the stopper portion and changes a movable range of the stopper portion. The case includes a first case located outside and provided in the mounting portion, and a second case slidably provided with respect to the first case,
The display device according to claim 5, wherein the rotation holding unit is provided in the second case.

Images