JP4192612B2 - Head mounted display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a head-mounted display device that can be mounted on a head to view an image.
[0002]
[Prior art]
As a conventional head-mounted display device, a front arm (arm) connected to one end of an arm (arm) attached to the upper part of the head, and a video display unit (display) supported by the front arm and disposed in front of the eyes Unit).
[0003]
If this head mounted display device is mounted on the head, this device can be used as a portable VTR (video tape recorder) or DVD monitor, for example.
[0004]
[Patent Literature]
Japanese Patent Laid-Open No. 10-123455
[Problems to be solved by the invention]
By the way, this head mounted display device is used not only for a person who does not wear glasses but also for a person who uses glasses.
[0006]
However, in this head-mounted display device, when a person using glasses observes an image displayed on the image display unit, when the external force is applied to the image display unit, the image display unit contacts the glasses. Doing so may damage the glasses or give a shock to the face.
[0007]
The present invention has been made in view of such circumstances, and its problem is to reduce the damage to the glasses and the impact on the face caused by the contact between the image display unit and the glasses when the head mounted display device is mounted. It is.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that the display means, an elastic member disposed between the display means and a lens of spectacles worn by a user, and the elastic member is in contact with the lens. And a low pressure generating means for maintaining a pressure in a space formed between the display means, the lens and the elastic member at a predetermined value or less.
[0009]
The invention according to claim 2 includes a front arm connected to one end of an arm attached to the user's head, and display means supported by the front arm and disposed in front of the user's eyes. An elastic member disposed between the display means and the spectacles worn by the user and in contact with the spectacles worn by the user; and in contact with the spectacles. A contact pressure detecting means for detecting a contact pressure of the display means, and a pressure of a space formed between the display means, the spectacles and the elastic member based on a detection result of the contact pressure detecting means. And a low pressure generating means for maintaining the following.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a view of a head mounted display device according to a first embodiment of the present invention as viewed from the side. In the drawing, the elastic member 31 is represented by a cross section.
[0016]
The head mounted display device includes a rear arm (arm) 10, a front arm 20, and a video display unit (display means) 30.
[0017]
The rear arm 10 is attached to the head. Pads are arranged at both ends of the rear arm 10 in contact with the temporal region and press the user's M temporal region. A speaker or the like is incorporated in this pad. The rear arm 10 and the speaker constitute a headphone.
[0018]
The front arm 20 is supported by one end of the rear arm 10. The front arm 20 is housed in a housing portion 40 provided on the rear arm 10.
[0019]
The video display unit 30 is supported by one end of the front arm 20 and is disposed in front of the user's eye E.
[0020]
An elastic member 31 is attached to the video display unit 30.
[0021]
The elastic member 31 is disposed between the glasses 50 worn by the user M and the video display unit 30. The elastic member 31 is formed of an elastic material in an annular shape, and is fixed around the video display surface of the video display unit 30.
[0022]
When the user M wearing the glasses 50 is observing an image displayed on the image display unit 30 of the head mounted display device, a force behind the user M from the outside acts on the image display unit 30 and the image is displayed. When the display unit 30 moves rearward of the user M, the elastic member 31 attached to the video display unit 30 abuts on the glasses 50, but the force acting on the glasses 50 is absorbed by the elastic members 31.
[0023]
According to the first embodiment, when an external force is applied to the video display unit 30 from the outside, the external force is absorbed by the elastic member 31 and the video display unit 30 does not contact the glasses 50. 50 damage and impact on the face of the user M are reduced.
[0024]
FIG. 2 is a view of the head mounted display device according to the second embodiment of the present invention as viewed from the side. The same reference numerals are given to the same parts as those in the first embodiment, and the description thereof is omitted. In the drawing, the elastic member 81 is shown in cross section.
[0025]
This embodiment is different from the first embodiment in that an elastic member 81 attached to the video display unit 30 is brought into contact with the glasses 50.
[0026]
The elastic member 81 has, for example, a cylindrical shape, and an opening periphery thereof is in contact with the lens 55 of the glasses 50. The elastic member 81 is fixed around the image display surface of the image display unit 30.
[0027]
When the user M wearing the glasses 50 is observing an image displayed on the image display unit 30 of the head mounted display device, when a rearward force is applied to the image display unit 30 from the outside, the image display unit 30 is displayed. The force acting on the glasses 50 through the elastic member 31 is absorbed by the elastic member 31.
[0028]
According to this 2nd Embodiment, there exists an effect similar to 1st Embodiment.
[0029]
FIG. 3 is a conceptual diagram showing the structure of a video display unit of a head mounted display device according to a third embodiment of the present invention. The same reference numerals are given to the same parts as those in the second embodiment, and the description thereof is omitted. .
[0030]
A contact sensor (contact pressure detecting means) 85 for detecting the contact pressure of the image display unit 30 that contacts the lens 55 of the glasses 50 is attached to the image display unit 30.
[0031]
The video display unit 30 includes an optical device unit 35, an optical system 36, and a low pressure generation unit (low pressure generation means) 37.
[0032]
The optical device unit 35 includes a liquid crystal panel (not shown), and receives a video signal from a portable video tape recorder (not shown), for example, and displays an image.
[0033]
The optical system 36 has an eyepiece (not shown), and enlarges and projects the image projected on the liquid crystal panel onto the eyeball E and retina of the user M.
[0034]
The low pressure generation unit 37 includes a pump (not shown), and is connected to a space S formed between the image display unit 30, the lens 55, and the elastic member 81 via a passage 37a. The pump is controlled based on the detection result of the contact sensor 85, and the air in the space S is sucked through the passage 37a and discharged to the outside.
[0035]
When a user M wearing the glasses 50 (see FIG. 2) is observing an image displayed on the image display unit 30 of the head mounted display device, the glasses M are attracted by a certain force and are passed through the elastic member 81. Then, the lens 55 is fixed to the video display unit 30.
[0036]
When the contact pressure detected by the contact sensor 85 becomes larger than a preset value, the low pressure generator 37 sets the pressure in the space S formed between the image display unit 30, the lens 55, and the elastic member 81. Control is performed so that the lens 55 is always attracted with a constant pressure.
[0037]
Therefore, the video display unit 30 and the lens 55 are integrated through the elastic member 81, and the video display unit 30 does not directly contact the lens 55.
[0038]
According to this 3rd Embodiment, there exists an effect similar to 2nd Embodiment.
[0039]
FIG. 4 is a cross-sectional view showing a video display unit and its peripheral portion of a head mounted display device according to a fourth embodiment of the present invention. Is omitted.
[0040]
The video display unit 30 is supported by one end of the front arm 20 and is disposed in front of the user's eye E.
[0041]
One end of an L-shaped bracket (hanging means) 39 is fixed to the video display unit 30.
[0042]
The L-shaped bracket 39 is formed of a material having a spring property, and the other end of the L-shaped bracket 39 is in contact with the edge of the glasses 50.
[0043]
When the user M wearing the glasses 50 is observing an image displayed on the image display unit 30 of the head-mounted display device, the elastic member 31 is moved when a rearward force is applied to the image display unit 30 from the outside. The force acting on the glasses 50 through the elastic member 31 is absorbed.
[0044]
Further, when a downward force is applied to the video display unit 30 from the outside, the L-shaped bracket 39 that is in contact with the edge of the glasses 50 bends, but the video display unit 30 does not shift downward.
[0045]
According to the fourth embodiment, the same effects as those of the second embodiment can be obtained, and the video display unit 30 does not shift downward, so that the glasses 50 can be held more reliably and the glasses 50 can be damaged or used. The impact on the face of the person M can be reduced.
[0046]
【The invention's effect】
As described above, according to the head mounted display device of the present invention, it is possible to reduce the damage to the glasses and the impact on the face caused by the contact between the video display unit and the glasses.
[Brief description of the drawings]
FIG. 1 is a view of a head mounted display device according to a first embodiment of the present invention when viewed from the side.
FIG. 2 is a view of a head mounted display device according to a second embodiment of the present invention when viewed from the side.
FIG. 3 is a conceptual diagram showing a structure of a video display unit of a head mounted display device according to a third embodiment of the present invention.
FIG. 4 is a cross-sectional view showing an image display portion and its peripheral portion of a head mounted display device according to a fourth embodiment of the present invention.
[Explanation of symbols]
10 Rear arm (arm)
20 Front arm 30 Video display section (display means)
31 Elastic member 37 Low pressure generating part (low pressure generating means)
39 L-shaped bracket (hanging means)
50 Glasses 85 Contact sensor (contact pressure detection means)
M user S space

Claims (2)

Display means;
An elastic member disposed between the display means and the lens of the glasses worn by the user;
Low pressure generating means for maintaining a pressure of a space formed between the display means and the lens and the elastic member at a predetermined value or less in a state where the elastic member is in contact with the lens. Head mounted display device. A front arm connected to one end of an arm to be worn on the user's head;
Display means supported by the front arm and arranged in front of the user's eyes;
In a head mounted display device comprising:
An elastic member disposed between the display means and the spectacles worn by the user, and located at a position where the user can contact the spectacles worn by the user;
A contact pressure detection hand for detecting a contact pressure of the display means in contact with the glasses;
Low pressure generating means for maintaining a pressure in a space formed between the display means, the glasses and the elastic member based on a detection result of the contact pressure detecting means at a predetermined value or less;
Head-mounted display apparatus characterized by comprising a.

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