JP2012089984A - Head-mounted image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head-mounted image display device which can be reduced in size when not mounted.SOLUTION: A headphone arm 20 is made to be rotatable in order that a display arm 30 supported by the headphone arm 20 and a display 40 which is mounted to the display arm 30 and disposed in front of user's eyes can move to positions inside a head band 10.

Description

  The present invention relates to a head-mounted image display device.

  2. Description of the Related Art Conventionally, a head mounted display in which a display unit can be arranged at a position facing either the left eye or the right eye is known. In this head-mounted display, an arm support part that rotatably supports a display arm is provided on one of two holding parts connected by a connecting part, and a display part is provided at the tip of the display arm (described below). See the official gazette).

JP 2007-251306 A

  When the head mounted display is mounted, the display arm can be rotated left and right and up and down with respect to the user's head. Therefore, when the display unit is not used, the display unit can be moved from the front of the eyes.

  However, when the head-mounted display is not attached (during storage, etc.), when the display arm is rotated in the direction approaching the connecting part, the display part or display arm is outside the connecting part (when the head-mounted display is attached, it is connected) Therefore, a large storage space is required, and the display unit or the like may be damaged.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a head-mounted image display device that can be reduced in size when not worn.

  In order to solve the above-mentioned problems, the invention described in claim 1 includes a headband portion mounted on a user's head, and two holding portions rotatably attached to inner surfaces of both end portions of the headband portion. , Two contact parts that are in contact with the user's temporal region and held by the two holding parts, a display arm part supported by one of the two holding parts, and attached to the display arm part And a display unit disposed in front of the user's eyes, and the holding unit is rotatable so that at least the display arm unit and the display unit can move to a position inside the headband unit. It is characterized by being.

  According to a second aspect of the present invention, in the head-mounted image display device according to the first aspect, the display arm portion can be extended and contracted.

  According to a third aspect of the present invention, in the head mounted image display device according to the first or second aspect, the display arm unit can be stopped at a predetermined position.

  According to a fourth aspect of the present invention, in the head-mounted image display device according to any one of the first to third aspects, the holding portion is capable of forward and reverse rotation, and the display portion is positioned on the right side of the user. It can be placed in front of either the left eye or the left eye.

  According to a fifth aspect of the present invention, in the head-mounted image display device according to any one of the first to fourth aspects, the contact portion is a headphone portion.

  According to the present invention, it is possible to reduce the size when not mounted.

FIG. 1 is a front view of a head-mounted image display apparatus according to a first embodiment of the present invention. FIG. 2 is an enlarged perspective view of a part of the head-mounted image display device. FIG. 3 is a perspective view showing a state in which the first housing part of the housing part is removed. FIG. 4 is a cross-sectional view of one end portion of the display arm portion. FIG. 5A is a cross-sectional view illustrating the click mechanism of the display arm unit, and FIG. 5B is an enlarged cross-sectional view of the hinge mechanism of the display arm unit. FIG. 6 is a cross-sectional view of the casing. FIG. 7 is a perspective view showing a connection state of the headphone unit to the headphone arm unit. FIG. 8 is a front view of the head-mounted image display device showing a folded state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view of a head-mounted image display apparatus according to a first embodiment of the present invention. In FIG. 1, the display arm portion 30 is extended by the action of the slide mechanism, and is in a position rotated 90 ° downward from the display use position. In FIG. 1, an axis extending in the front-rear direction (direction orthogonal to the drawing) of the head-mounted image display device is defined as an X axis, an axis extending in the left-right direction is defined as a Y axis, and an axis extending in the vertical direction is defined as a Z axis. did.

  The head-mounted image display device 1 is attached to a headband unit 10 to be mounted on a user's (not shown) head and to the inner surfaces of both end portions of the headband unit 10 so as to be able to rotate forward and backward. Left and right headphone arm parts (holding parts) 20, a display arm part 30 supported by one of the left and right headphone arm parts 20, and a display part attached to the display arm part 30 and arranged in front of the user's eyes (Display unit) 40 and a headphone unit (contact unit) 50 that is supported by the left and right headphone arm units 20 and outputs sound.

  The headband unit 10 has an arc shape. The headband unit 10 is made of a thin steel plate having spring properties, and a band main body unit 11 that presses the user's temporal region to bring the headphone unit 50 into contact with the user's ear, and both end portions of the band main body unit 11. And a head pad 13 that covers the surface of the band main body 11 and relieves pain in the head due to contact with the band main body 11. The head pad 13 prevents the display unit 40 from coming into contact with the band main body 11 and scratching the display unit 40 when the display arm unit 30 is rotated toward the headband unit 10.

  The display arm unit 30 includes three cylindrical members 31, 32, and 33 that constitute a slide mechanism. The tubular member 33 is supported by the headphone arm unit 20. The tubular member 32 is connected to the tubular member 33 so as to be insertable / removable, and the tubular member 31 is connected to the tubular member 32 so as to be insertable / removable. Therefore, the display arm part 30 can be expanded and contracted.

  Further, the display unit 40 is rotatably supported by the cylindrical member 31 of the display arm unit 30 via the display hinge unit 35. The display hinge portion 35 includes a so-called ball joint. The ball joint is provided in the display hinge portion 35, for example, and a shaft portion (not shown) having a spherical portion at the tip portion, and a socket (not shown) provided in the display portion 40 and rotatably supporting the spherical portion. ). Therefore, the orientation of the display unit 40 can be freely changed.

  FIG. 2 is an enlarged perspective view of a part of the head-mounted image display device, and FIG. 3 is a perspective view showing a state where the first housing portion 76 of the housing portion 70 is removed.

  The headphone arm unit 20 is made of plastic. The headphone arm unit 20 is rotatable about an axis AX3 orthogonal to the inner surface 71 of the end of the housing unit 70, and the display arm unit 30 is connected to the headphone arm unit 20, so that the headphone arm unit The display arm unit 30 rotates integrally as the 20 rotates.

  One end of the headphone arm unit 20 is fitted into a hole (not shown) formed in the housing unit 70 and is rotatably supported by the housing unit 70 via a joint member 80. A substantially circular headband arm hinge click spring 82 is fixed to the headphone arm portion 20 by screws 81. A click receiving plate 83 is sandwiched between the peripheral edge portion of the headband arm hinge click spring 82 and the inner wall surface of the housing portion 70. On the click receiving plate 83, when the headphone arm unit 20 rotates, a recess (not shown) into which a projection (not shown) formed on the headband arm hinge click spring 82 falls is spaced apart from the circumferential direction by a predetermined distance. Formed. The convex portion is formed, for example, by causing the headband arm hinge click spring 82 in FIG.

  A click feeling is obtained when the headphone arm unit 20 rotates because the convex part of the headband arm hinge click spring 82 falls into the concave part of the click receiving plate 83 by the spring force of the headband arm hinge click spring 82. As a result, the display arm unit 30 and the display unit 40 can be stopped with a click feeling in front, above and below the user's eyes.

  The headband arm hinge click spring 82 has a long hole 84 through which a cable for wiring is passed. Further, the headband arm hinge click spring 82 is formed with a projecting portion 85 that abuts against the projecting portions 72 and 73 formed on the inner wall surface of the housing portion 70. The rotation range of the display arm unit 30 (headphone arm unit 20) is limited by bringing the protruding portion 85 into contact with the protruding portions 72 and 73.

  4 is a cross-sectional view of one end of the display arm unit 30, FIG. 5A is a cross-sectional view illustrating a click mechanism of the display arm unit 30, and FIG. 5B is an enlarged cross-sectional view of the hinge mechanism 90 of the display arm unit 30. FIG.

  The hinge mechanism 90 includes one end portion 30 a of the display arm portion 30, a second hinge portion 92 that is rotatably supported by the headphone arm portion 20, and a first hinge portion 91 that is fitted to the second hinge portion 92. It is configured.

  Two shaft portions 34 projecting in the direction of the axis AX2 are formed at one end 30a of the display arm portion 30. Since the shaft portion 34 is rotatably supported by the first hinge portion 91 and the second hinge portion 92, the display arm portion 30 can rotate about the shaft portion 34 (axis AX2). The horizontal position of the display unit 40 can be changed.

  A concave groove 93 is formed in the second hinge portion 92 in which the convex portion 38 formed on the one end portion 30a of the display arm portion 30 is slidably engaged. A leaf spring 95 is disposed between the bottom surface of the concave groove 93 and the tip of the convex portion 38, and a frictional force is generated when the display arm portion 30 is rotated about the axis AX <b> 2 to the display arm portion 30. Generate torque.

  The second hinge portion 92 is formed with an annular protrusion 94 that fits into the shaft portion 34. Since the end surface of the shaft portion 34 is rotatably supported by the inner peripheral surface of the annular protrusion 94, the display arm portion 30 can be rotated about the axis AX1 of the second hinge portion 92 as a central axis. The vertical position of 40 can be changed.

  A click groove 37 is formed on the outer peripheral surface of the second hinge part 92 at a position facing the axis AX1. The click groove 37 and the click spring 25 attached to the headphone arm unit 20 constitute a click mechanism. The click spring 25 is attached to a concave portion 26 formed in the headphone arm portion 20 and presses the peak portion 27 against the click groove 37 by the elastic force of the click spring 25. Therefore, when the display arm unit 30 is rotated around the axis AX1, it can be stopped at a predetermined position with a click feeling.

  The click grooves 37 are formed in two places because the display arm unit 20 is rotated 180 ° from the use position (position when the display unit 40 is in front of one eye) and in front of the other eye. This is because the vertical position of the display unit 4 can be adjusted even when it is arranged and used.

  As described above, the display arm unit 30 has a degree of freedom to allow various movements to the slide mechanism, the hinge mechanism 90 and the display hinge unit 35. That is, the slide mechanism is a linear motion with one degree of freedom, the hinge mechanism 90 is rotatable about the axes AX1 and AX2, and the display hinge portion 35 is rotatable about the X, Y, and Z axes. Has 3 degrees of freedom. Therefore, the display arm unit 30 can move in a total of 6 degrees of freedom. As a result, position adjustment of the display unit 40 (position adjustment for forming an image displayed on a display element (not shown) built in the display unit 40 on the eyeball retina) can be easily performed. .

  In addition, the electric board 75 housed in the housing part 70 and the electric board (not shown) housed in the display part 40 are the display hinge part 35, the display arm part 30, the headphone arm part 20, and the joint member 80. The headband arm hinge click spring 82 is electrically connected by a cable (not shown) extending through a long hole 84 for wiring. The electric board 75 is provided with a power supply, a power holding circuit, and the like (not shown), and electric power for driving a display element (not shown) is supplied from the electric board 75 to the display unit 40 via a cable.

  FIG. 6 is a cross-sectional view of the housing unit 70. In addition, illustration of the electric board arrange | positioned in the housing | casing part 70 is abbreviate | omitted.

  The housing unit 70 includes a first housing unit 76 and a second housing unit 77 that fits the first housing unit 76. The first housing portion 76 and the second housing portion 77 are each molded with plastic. In a space 78 formed between the first housing portion 76 and the second housing portion 77, the length adjusting member 12 having a semi-cylindrical cross section fixed to the headband main body portion 11 is slidable. Has been placed. The band main body 11 is integrally held by the length adjusting member 12 by, for example, insert molding. The bottom surface of the length adjusting member 12 (a plane opposite to the surface of the arc) is provided with a knurled line 14 (for example, a flat knurled line) having a predetermined pitch (see FIG. 1). A mountain-shaped leaf spring member 79 that can be engaged with the valley portion of the serration 14 is supported on the second housing portion 77. A click feeling is obtained when the length adjusting member 12 is slid by pressing the peak portion of the leaf spring member 79 against the valley of the knurled portion 14 of the length adjusting member 12 by the spring force of the leaf spring member 79. As a result, when adjusting the length of the headband unit 10, the length adjusting member 12 can be stopped at a predetermined position with a click feeling. The length adjusting mechanism includes a length adjusting member 12 and a leaf spring member 79.

  Further, the casing 70 is energized to urge the take-up reel (not shown) and the take-up reel in the reel take-up direction when the display arm 30 is contracted to take up excess cable. A spring (not shown) is provided.

  FIG. 7 is a perspective view showing a connection state of the headphone unit 50 to the headphone arm unit 20.

  A headphone unit 50 is connected to the other end of the headphone arm unit 20 via a headphone hinge pin 22.

  The headphone unit 50 is cylindrical. A hinge arm 6 and a hinge arm 23 connected by a headphone hinge pin 22 are provided at the center of the headphone unit 50 and the other end of the headphone arm unit 20, respectively. An intermediate portion of the headphone hinge pin 22 is fixed to a hinge arm 23, and both end portions of the headphone hinge pin 22 are rotatably supported by so-called fool holes whose cross sections formed in the hinge arm 6 are long holes (not shown). Has been.

  As a result, the headphone unit 50 can be rotated in the vertical direction and the horizontal direction. Moreover, since the hinge arm 6 is formed in the center part of the headphone part 50, the headphone part 50 can press a user's ear equally.

  When the head-mounted image display device 1 having the above configuration is mounted on the head, the length adjustment mechanism is operated to adjust the length of the headband unit 10. With this adjustment, the headband unit 10 can be brought into close contact with the user's head, and the headphone unit 50 can be accurately pressed against the left and right ears. Then, the position of the display part 40 arrange | positioned ahead of a user's eyes using the hinge mechanism 90 of the display arm part 30, the display hinge part 35, and a slide mechanism is adjusted. At this time, since the display arm unit 30 has six degrees of freedom, the user can easily adjust the position of the display unit 40. As a result, the user can view the properly adjusted image with sound.

  Next, a folding method of the head-mounted image display device will be described with reference to FIG.

  FIG. 8 is a front view of the head-mounted image display device showing a folded state. In the head-mounted image display device 101 in FIG. 8, the outer shape of the housing portion 170 is different from the outer shape of the housing portion 70 of the head-mounted image display device 1 in FIG. The basic structure of both is the same.

  When the head-mounted image display device 101 is folded, first, the headband unit 10 is shortened. Next, the length of the display arm part 30 is made the shortest. Thereafter, the display arm unit 30 is rotated by 90 ° from the display use position in the direction away from the headband unit 10 with the axis AX1 as the central axis (see FIG. 1). Finally, the headphone unit 50 is rotated 180 ° in a direction approaching the headband unit 10 with the axis AX3 as the central axis. As a result, the headphone arm unit 20, the headphone unit 50, the display arm unit 30, and the display unit 40 move to the inside of the headband unit 10. At this time, as shown in FIG. 8, the display arm unit 30 is located between the headphone arm unit 20 and the headphone unit 50.

  According to this embodiment, since the headphone arm unit 20, the headphone unit 50, the display arm unit 30, and the display unit 40 can be moved to the inside of the headband unit 1, it is possible to reduce the size when not worn. Further, when the display arm unit 30 is folded, the display arm unit 30 and the display unit 40 do not come out (upward) of the headband unit 10, so that the head-mounted image display device 1 is put in and out of a bag or the like. The display unit 40 or the like is not caught on the edge of the bag and is not damaged. Furthermore, since the head-mounted image display device 1 (101) is smaller than the conventional device when not mounted, the head-mounted image display device 101 (101) can be stored in a smaller bag or the like.

  In each of the above embodiments, the display unit 40 is arranged in front of the user's right eye. However, the headphone arm unit 20 is rotated 90 ° backward from the position shown in FIG. When the image display device 1 is mounted, the display unit 40 may be disposed in front of the left eye of the user. In the above-described embodiment, the contact unit is the headphone unit 50 that can output sound. However, instead of this, for example, an ear pad that does not output sound may be used.

  Moreover, in the said embodiment, although the display arm part 30 was able to extend and contract, the display arm part 30 does not need to be extendable. Furthermore, in the above embodiment, the headphone arm unit 20 can be rotated forward and backward, but the headphone arm unit 20 may not be capable of rotating forward and reverse.

  1: head-mounted image display device, 10: headband unit, 20: headphone arm unit (holding unit), 30: display arm unit, 40: display unit (display unit), 50: headphone unit (contact unit).

Claims (5)

A headband unit to be worn on the user's head;
Two holding parts rotatably attached to the inner surfaces of both ends of the headband part,
Two contact portions that contact the user's temporal region and are respectively held by the two holding portions;
A display arm portion supported by one of the two holding portions;
A display unit attached to the display arm unit and disposed in front of the user's eyes;
A head-mounted image display device, wherein the holding unit is rotatable so that at least the display arm unit and the display unit can move to a position inside the headband unit.   The head-mounted image display device according to claim 1, wherein the display arm unit is extendable and contractible.   The head-mounted image display device according to claim 1, wherein the display arm unit can be stopped at a predetermined position.   The said holding | maintenance part can be rotated forward / reversely, and the said display part can be arrange | positioned in any front of the said user's right eye and left eye. The head-mounted image display device described.   The head-mounted image display device according to claim 1, wherein the contact portion is a headphone portion.

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