JPH07333547A - Video display device - Google Patents

Abstract

PURPOSE:To always and accurately mount a display main body part on a required hold position of the head of an observer by simple and easy operation. CONSTITUTION:A head hold means 21 is constituted of a base frame member 22 connected to or integrated with at least a part of the display main body part 11 and given a shape curved or bended with the B side of the head of an observer A as its inward radial direction, and a movable frame member 23 connected to at least a part of the base frame member 22 and selectively made operatable toward the direction holding or releasing the base frame member 22 and the display main body part 11 to/from the head B of the observer A by using a connection part 24 as a fulcrum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device which can be viewed by mounting and holding a display main body on an observer's head and projecting an image as a virtual image in the eyeball of the observer. More specifically, the present invention relates to an image display device having improved means for supporting the display body on the head of an observer.

[0002]

2. Description of the Related Art In recent years, by directly projecting an image displayed on a small CRT or an image display device such as a liquid crystal display device into the left and right eyes of an observer, the image may be projected in the air. There has been developed a configuration of an image display device that enables a virtual image to be observed, that is, an image display device that is used while being held in front of the left and right eyeballs of the observer's face.

In this image display device, a large screen is displayed by enlarging and projecting the screen of a relatively small image display element in order to allow the observer to easily experience a highly realistic image observation. It is desirable to provide the same effect as viewing, and at the same time, to make the entire apparatus as small and lightweight as possible so that it is easy for an observer to use.

In the conventional image display device of this type,
As is well known, there is provided a display main body part in which an image display element for displaying an image and an eyepiece optical system for forming an exit pupil for guiding the displayed image into an eyeball of an observer are respectively installed. At the same time, it has a head supporting means for detachably mounting the display main body on the head side in a state of being held in front of the observer's face.

Here, as the head supporting means, for example, as disclosed in Japanese Patent Application Laid-Open No. 3-188777, the circumference of the observer's head fixing position with respect to the display main body, etc. A wearing headband whose length can be adjusted is arranged in accordance with the above, and by using the wearing headband, the display main body is mounted on the observer's head.

That is, in order to mount the display main body on the observer's head, first, while holding the display main body with one hand, the left and right eyeball portions of the observer at the holding target position. The inner peripheral edge on the observation surface (mounting surface) side of the main body portion in close contact with the face including, and then with the other hand, the fastening headband is attached to the side of the observer's head. While winding from the part surface to the occipital surface, while adjusting the winding length arbitrarily,
This is to ensure that it is securely attached and held, taking into consideration that it will not fall off during use.

[0007]

However, in the detachable mounting of the display main body using the headband on the observer's head as described above, one hand holds the display main body in the fixed position. And wrapping around the head of the fastening headband with the other hand and adjusting the length at the same time, the operability in wearing is extremely poor and is not always correct. There was an unfavorable problem that it could not be worn.

The present invention has been made in order to solve the above-mentioned conventional problems.
It is an object of the present invention to provide an image display device having a head support means that can always wear the display main body correctly with respect to a required holding position of the observer's head by a simple and easy operation.

[0009]

In order to achieve the above object, the invention according to claim 1 of the present invention is
A video display element for displaying a video, and a display main body part having an eyepiece optical system for forming an exit pupil for guiding a video displayed on the video display element into an eyeball of an observer,
In a video display device having a head supporting means mounted and supported on the observer's head so as to hold the display main body in front of the observer's face portion, the head supporting means comprises: A base frame member that is combined or integrated with at least a part of the display main body and has a shape that is curved or bent with the head side of the observer as the inner diameter direction, and at least a part of the base frame member. And a movable frame member that is connected to the movable body and is selectively operable with the connecting portion as a fulcrum in a direction in which the base body frame member and the display main body are held or released to the observer's head. It is characterized by being provided.

Therefore, in the video display device according to the first aspect,
Since the movable frame member is selectively operable in the direction of holding or releasing the base frame member connected to or integrated with the display main body to the observer's head, By the operation operation in the holding direction, the display main body is easily attached to the observer's head.

According to a second aspect of the present invention, the image display element for displaying an image and an exit pupil for guiding the image displayed on the image display element into the eyeball of the observer are formed. An image having a display main body in which an eyepiece optical system is installed, and a head supporting unit mounted and supported on the observer's head so as to hold the display main body in front of the observer's face. In the display device, the head supporting means is combined with or integrated with at least a part of the display main body, and has a base frame having a curved shape or a bent shape with the head side of the observer inward. A member and at least a part of the base frame member, and holds the base frame member and the display main body on an observer's head with the connecting portion serving as a fulcrum.
And a movable frame member operable in a releasing direction, and an elastic member elastically pressing the movable frame member against the base frame member in a releasing direction from the head.

Therefore, in the video display device according to the second aspect,
The movable frame member is selectively operable in a direction of holding or releasing the base frame member connected to or integrated with the display main body to the observer's head, and the elastic member causes the base frame to move. Since the elastic pressure is applied to the member in the direction to release the movable frame member, by the operation operation in the holding direction of the movable frame member,
The display main body is easily attached to the observer's head, and the elastic force of the elastic member allows the display main body to be smoothly detached from the head with the operation operation in the releasing direction.

Further, in the invention according to claim 3 of the present invention, an image display element for displaying an image and an exit pupil for guiding the image displayed on the image display element into the eyeball of the observer are formed. An image having a display main body in which an eyepiece optical system is installed, and a head supporting unit mounted and supported on the observer's head so as to hold the display main body in front of the observer's face. In the display device, the head supporting means is combined with or integrated with at least a part of the display main body, and has a base frame having a curved shape or a bent shape with the head side of the observer inward. A member and at least a part of the base frame member, and holds the base frame member and the display main body on an observer's head with the connecting portion serving as a fulcrum.
And a movable frame member operable in a releasing direction, an elastic member elastically pressing the movable frame member toward the base frame member in a releasing direction from the head, and the movable frame member movable relative to the base frame member. A flexible member for actuating the frame member in a direction of contacting and holding the head portion, and a winding mechanism portion or a pulling mechanism portion for winding or pulling the flexible member against the elasticity of the elastic member. It is characterized by including.

Therefore, in the video display device according to the third aspect,
The base frame member, which is coupled to or integrated with the display main body, is selectively operable in the direction of holding or releasing the base frame member on the observer's head, and the base frame member is made elastic by the elastic member. A flexible member for elastically pressing the movable frame member in a direction of releasing the movable frame member and further actuating the movable frame member in a direction of abutting and holding the movable frame member against the observer's head, and the flexible member against the elasticity of the elastic member. Since the winding mechanism section for winding or pulling the flexible member is arranged, the winding mechanism section, or the winding of the flexible member by an operation operation in the holding direction of the pulling mechanism section,
Alternatively, the movable frame member is operated in association with the pulling, so that the display main body is easily attached to the observer's head, and the elastic force of the elastic member accompanies the operation of the head in the releasing direction. The main body of the display can be smoothly removed from the.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The outline of the image display apparatus according to the present invention and the first to fifth embodiments will be described below with reference to FIGS.
This will be described in detail with reference to FIG.

First, a general outline of a head-mounted image display device to which the present invention is applied will be described.

FIG. 1 is a side view conceptually and schematically showing a state in which the display main body of the head-mounted image display device is mounted on the observer's head by the head support means. FIG. 2 is a cross-sectional explanatory view schematically showing an example of a combinational arrangement relationship between an image display element and an eyepiece optical system incorporated in the display main body.

In the device configuration of the general head-mounted image display device shown in FIGS. 1 and 2, the image display device 10 to which the first to fifth embodiments of the present invention are respectively applied is The display main body 11 has a display main body 11 used as an exterior housing of the apparatus.
In contrast, the inner peripheral edge portion on the observation surface (wearing surface) side is closely attached to the front of the face portion C including the left and right eyeballs D of the observer A,
Alternatively, head supporting means 21 for detachably mounting the head on the head B of the observer A is provided so that the head can be held in a close state.

In the display body 11, a liquid crystal display element as a video display element, here, a display surface 12a is provided so that an image can be displayed on the display surface 12a. The liquid crystal display element 12 and the
The half mirror, the prism, and the like allow the external light of the observer A to selectively pass through the external light that is selectively received from the front side, for example, the external light introducing shutter 16 using a liquid crystal shutter or other mechanical shutters. The left and right eyeballs C are guided by the left and right eyeballs C, transmit the light flux of the image displayed on the liquid crystal display element 12, and re-reflect the light flux expanded and reflected by the concave magnifying reflection surface 15a of the concave mirror 15. The projection optical system 13 using the beam splitter 14 for forming the exit pupil at the position is fixedly arranged at a required setting position.

Therefore, in this case, by aligning the left and right eyeballs C with the left and right exit pupil positions,
The observer A can observe the magnified and projected image well as expected, and, on the other hand, by holding the external light introduction shutter 16 in the transmissive state, the external light selectively received. Is guided to the left and right eyeballs C, so that the observer A can easily visually recognize his or her surroundings.

Further, the head supporting means 21 is basically combined with or integrated with at least a part of the display main body 11 and has a flat surface with the head B side of the observer A in the inner diameter direction. A base frame member 22 that is curved (or bent as will be described later) in a semi-circular shape, and is pivotally supported by both curved ends of the base frame member 22, and the head is centered on each of the pivotal support portions. The direction of the portion B side, and by extension, the base frame member 22 and the base frame member 2 here.
The display main body 11 is attached to and held on the head B of the observer A via 2 and each movable frame member 23 is operable in a direction of loading / unloading.

More specifically, the base frame member 22 is bent substantially with the head B side of the observer A being in the inner diameter direction, and substantially the ears of the head B are substantially bent. Part E
Of the base frame member 22 is formed in a planar shape extending in the shape of a semi-circular arc to the vicinity of the upper part of the base frame member 22.
Each movable frame member 23 is pivotally supported by the pivot pin 24 as a fulcrum so as to be rotatable toward each temporal portion Ba located in the upper rear portion of each ear portion E, and each movable frame member 23. At the respective end portions thereof, elastic pad members 25 which are brought into direct contact with the respective side portions Ba are attached.

Next, each of the video display devices according to the first to fifth embodiments of the present invention will be described in detail.

First Embodiment. 3 and 4 are an overall plan view schematically showing the outline of the device configuration according to the first embodiment in a state in which it is mounted on the head of an observer, and a schematic diagram with a part of the main structure cut away. 5 and 6 are an enlarged plan view and a front sectional view, respectively, showing the detailed structure of the winding mechanism section in the first embodiment in an enlarged manner.

In the device configuration shown in FIGS. 3 to 6, in the first embodiment, as the head supporting means 21 of the display main body 11, the winding mechanism is provided at the center of the front part of the base frame member 22. While the parts 31 are arranged, the movable frame members 23 pivotally supported on both ends of the base frame member 22 are pulled in the non-mounting direction by respective elastic members, here, springs 26, respectively. Each flexible member (for example, a flexible wire rod, preferably a SUS wire rod having a small diameter and high rigidity) for head mounting, one end of which is fixed to an intermediate portion in the longitudinal direction of the movable frame member 23. , Each of the mounting wires 32, the winding mechanism 31
It is possible to wind and rewind by.

Here, the winding mechanism portion 31 pivots the winding shaft 33 having the winding rotary knob 34 taken out to the outside and the other end portion of each of the mounting wires 32 fixed thereto. 35 and the winding shaft 33.
A ratchet wheel 36 for detent is provided on a part of the shaft of the guide pin 3. Separately, a slide knob 39 for rewinding is taken out to the outside, and each guide pin 3 is planted on the pivot support board 35.
7, the sliding member 38 in which the respective guide holes 40 are engaged is arranged, and the ratchet pawl 38a protruding from the sliding member 38 is pulled by the spring 41 so that the ratchet wheel 36 is ratcheted. The teeth 36a are detented and locked.

Therefore, in the case of the structure of the first embodiment, the display main body 11 is detachably attached to the head B of the observer A as follows.

That is, in the state where the display main body 11 is held by one hand and held at the corresponding fixed position of the head B, the winding rotary knob 3 of the winding mechanism portion 31.
By rotating 4 with the other hand, under the detent action of the ratchet pawl 38a on the ratchet teeth 36a, the respective mounting wires 3 of the winding shaft 33 are attached.
2 is wound up and each movable frame member 23 is wound.
Is rotated in the mounting direction against the pulling force of each spring 26, and each movable frame member 23 via each pad member 25 makes contact with each side head Ba of the head A, and thus is mounted. And the continuous elastic holding by the pad members 25 can be easily performed.
Has elasticity, a comfortable wearing feeling can be obtained.

Further, the display main body 11 is again
In the state of being gripped by one hand, the winding mechanism section 31
By sliding the rewinding sliding knob 39 of FIG. 1 against the pulling force of the spring 41 with the other hand, the ratchet teeth 3
The detent action of the ratchet pawl 38a on the 6a is easily released, and each movable frame member 23 is rotated and returned in the non-mounting direction by the pulling force of each spring 26. Can be easily removed.

Second embodiment. FIG. 7 and FIG. 8 are a plan sectional view and a front sectional view, respectively, showing an enlarged detailed structure of the traction mechanism section in the second embodiment.

In the apparatus configuration shown in FIGS. 7 and 8, in the second embodiment, the display body 1
As the head supporting means 21 of 1, the base frame member 2
In the center of the front part of No. 2, the winding mechanism part 31 in the first embodiment.
Instead of this, a traction mechanism section 51 is arranged, and each mounting wire 32 of each movable frame member 23 can be pulled and returned by the traction mechanism section 51.

Here, the pulling mechanism portion 51 is fixedly provided with an engaging base plate 52 in which locking grooves 53, 53 facing a set and facing one another are formed in a plurality of rows in a row. Also, a pair of operating knobs 55, 55 having an inverted U shape and facing the outside are formed, and the locking grooves 53, 53 of the respective steps are individually provided on both sides of the opened lower part. Engageable opposite 1
Actuating elastic member 54 having a pair of locking knobs 56, 56
And the operating elastic member 54,
The other end of each of the mounting wires 32 that is drawn in via the guide post 57 that extends vertically from the engagement board 52 is fixed.

Therefore, also in the case of the configuration of the second embodiment, the detachable mounting of the display body 11 on the head B of the observer A is performed as follows.

That is, even in the configuration of the second embodiment, the display main body 11 is held by one hand and held by the other hand corresponding to the fixed position of the head B, and pulled by the other hand. The respective operating knobs 55, 55 of the operating elastic member 54 constituting the mechanism portion 51 are compressed against their own elastic force to reduce the distance between the respective locking knobs 56, 56 to reduce the respective locking grooves 53, 55 of the corresponding stage. By releasing and separating from the inside of 53, and in this released state, the actuating elastic member 54 is moved in the pulling direction shown by the arrow, the pulling operation of each mounting wire 32 is performed respectively, and each movable frame member 23.
Can be rotated in the mounting direction against the pulling force of each spring 26, and can be brought into contact with each side head Ba of the head A by each movable frame member 23 via each pad member 25. Each locking knob 56, 56 at the position where the corresponding contact is made.
Release the compression between the locking grooves 53 of the corresponding step at the corresponding position,
It can be easily mounted by re-engaging with 53, and in this mounted state, continuous elastic holding by each pad member 25 is easily performed.

Further, the display main body 11 is again
In a state of being gripped by one hand, by operating the operation elastic member 54 of the pulling mechanism portion 51 in the opposite manner to the above, the pulling state of each of the mounting wires 32 is released,
It is possible to easily remove the base frame member 22 from the head A.

Third and fourth embodiments. 9 and 10
FIG. 3A is an overall side view schematically showing the outline of the device configuration according to the third embodiment in a mode in which it is mounted on the observer's head, and an enlarged plan view schematically showing a partial cutout of the main part structure. Yes,
11 and 12 are an overall side view schematically showing the outline of the device configuration according to the fourth embodiment in a state of being attached to the observer's head, and a partial cutout of the main part structure. It is an enlarged plan view which shows typically.

In the respective device configurations shown in FIGS. 9 and 10 and FIGS. 11 and 12, in the case of the third embodiment, the head supporting means 21 of the display body 11 is provided.
As a stepping motor 62 having a take-up shaft 63 as a take-up mechanism section 61 is arranged at the center of the front part of the base frame member 22, a stepping motor 62 capable of forward and reverse rotation is arranged, and at one end of the base frame member 22, In the case of the first embodiment, a power supply device 65 including a forward rotation switch 64a and a reverse rotation switch 64b as a rotation direction switching switch device of the stepping motor 62, and a driver 66 for polarity conversion is arranged in a housing 67. alike,
The winding mechanism section 61 allows the respective mounting wires 32 to be electrically wound up and rewound. In the case of the fourth embodiment, the forward rotation switch 64a and the reverse rotation switch 64a are used. A housing 67 in which a switch 64b and a power supply device 65 including a driver 66 for converting the polarity is installed is arranged in front of the stepping motor 62 and on the display body 11, and each mounting wire 32 is similarly attached. It can be electrically rewound and rewound.

Therefore, also in the configurations of the third and fourth embodiments, the detachable mounting of the display main body 11 on the head B of the observer A is performed by the control operation of the switch device 64. Therefore, it is possible to obtain substantially the same operational effects as in the case of the first embodiment.

Fifth embodiment. FIG. 13 is an overall plan view schematically showing the outline of the device configuration according to the fifth embodiment in a state where it is mounted on the observer's head.

In the apparatus configuration shown in FIG. 13, in the case of the fifth embodiment, the head supporting means 21 of the display main body 11 has a substantially planar shape with the head B side of the observer A being the inner diameter direction. A base frame member 22a bent so as to form a semi-circular shape, and both ends of the base frame member 22a are pivotally supported by respective pivot pins 24, and similarly, the head B side of the observer A is set in the inner diameter direction. The movable frame member 23a is bent so as to form a substantially semi-circular shape in a plane, and similar operational effects can be obtained in the fifth embodiment as well.

In the winding mechanism section 31 and the traction mechanism section 61 used in the above-mentioned respective embodiments, since they have a detent function and a releasing function respectively,
There is an advantage that the winding and the pulling and the holding at the time of mounting after completion of the pulling, and the release at the time of removal are easily and surely performed. Further, these respective mechanical parts 31, 61 are provided at the front center of the base frame member 22. Since it is arranged on the right and left sides, it is possible to uniformly wind and pull the respective attachment wires 32 on both the left and right sides, and make the contact force of each movable frame member 23 or 23a to each temporal region Ba uniform. It can be maintained.

Here, as is clear from the above description of the first to fifth embodiments, the present invention has been described in the above claims 1, 2, and 3 (1), (2). In addition to the above configurations, and (3), the following configurations are also applicable.

(4) The movable frame member pivotally supported by the base frame member is provided with an elastic pad member directly contacting the observer's head. 4. The video display device according to any one of 1 to 3.

(5) The image display device according to claim 3, wherein the flexible member is a wire having flexibility.

(6) The flexible member is S having flexibility.
The image display device according to claim 3, wherein the image display device is a US-based wire rod.

(7) The video display device according to claim 3, wherein the winding mechanism section or the pulling mechanism section has a detent function and a releasing function.

(8) The reference position for winding or pulling in the winding mechanism section or the pulling mechanism section is set at the frame center of the base frame member. Video display device.

[0048]

As described above in detail with reference to each embodiment, according to the invention described in claim 1 of the present invention, an image display element for displaying an image and an image displayed on the image display element are observed. A display main body that incorporates an eyepiece optical system that forms an exit pupil to guide it into the eyeball of a person, and in order to hold the display main body in front of the observer's face, attach it to the observer's head. In a video display device provided with supported head supporting means, the head supporting means is coupled to or integrated with at least a part of a display main body, and is curved with the head side of an observer inward. Alternatively, the base frame member having a bent shape is connected to at least a part of the base frame member, and the base frame member and the display main body are held on the observer's head with the connecting portion serving as a fulcrum. Is provided with a movable frame member that is selectively operable in the releasing direction, the display main body with respect to the observer's head is operated by operating the movable frame member in the holding direction or in the releasing direction. It has an excellent feature that the parts can be detachably attached favorably and effectively and that the attachment state can be surely maintained.

According to a second aspect of the present invention, the head supporting means is connected to or integrated with at least a part of the display main body, and the head side of the observer is directed in the inner diameter direction. The base frame member having a curved or bent shape is connected to at least a part of the base frame member, and the base frame member and the display main body are placed on the observer's head with the connecting portion as a fulcrum. Retention,
And the movable frame member operable in the releasing direction and the elastic member for elastically pressing the movable frame member in the direction of releasing the movable frame member from the head portion with respect to the base frame member. The display main body can be detachably and satisfactorily attached to the observer's head by operating in the direction of the arrow or the release direction, and the attached state can be surely maintained. Thus, the display main body can be removed from the head during the releasing operation smoothly by the elastic force of the elastic member.

Further, according to the invention described in claim 3 of the present invention, the head supporting means is connected to or integrated with at least a part of the display main body, and the head side of the observer is directed in the inner diameter direction. The base frame member having a curved or bent shape is connected to at least a part of the base frame member, and the base frame member and the display main body are placed on the observer's head with the connecting portion as a fulcrum. A movable frame member that is operable in a holding and releasing direction, an elastic member that elastically presses the movable frame member from the head toward the base frame member, and a movable frame member head against the base frame member. A flexible member that is operated in the direction of contacting and holding the flexible member, and a winding mechanism unit or a pulling mechanism unit that winds or pulls the flexible member against the elasticity of the elastic member. Since it is configured, the movable frame member is actuated in accordance with the winding or pulling of the flexible member by the operation operation of the winding mechanism portion or the pulling mechanism portion in the holding direction, and the head of the observer is similarly activated here. The display body can be detachably and satisfactorily attached to the head portion, and the attached state can be reliably maintained. At the same time, the display body is detached from the head during the release operation. Can be smoothly performed by the elastic force of the elastic member.

[Brief description of drawings]

FIG. 1 is a side view conceptually and schematically showing a state in which a display main body of a head-mounted image display apparatus to which each embodiment of the present invention is applied is mounted on an observer's head by a head holding means. FIG.

FIG. 2 is a cross-sectional explanatory view schematically showing a specific example of a combined arrangement of a video display element and an eyepiece optical system incorporated in a display main body of the video display device.

FIG. 3 is an overall plan view schematically showing the outline of the device configuration according to the first embodiment of the present invention in a state where it is mounted on the head of an observer.

FIG. 4 is an enlarged plan view schematically showing a partial cutaway of a main part structure of the image display device according to the first embodiment.

5 is an enlarged plan sectional view showing a detailed structure of the traction mechanism section in FIGS. 3 and 4; FIG.

FIG. 6 is a front sectional view of FIG.

FIG. 7 is an enlarged plan sectional view showing a detailed structure of a traction mechanism section in a second embodiment of the present invention.

FIG. 8 is a side sectional view of FIG.

FIG. 9 is an overall side view schematically showing an outline of an apparatus configuration according to a third embodiment of the present invention in a state of being attached to the head of an observer.

FIG. 10 is an enlarged plan view schematically showing a partial cutaway of the main structure of the image display device according to the third embodiment.

FIG. 11 is an overall side view schematically showing an outline of an apparatus configuration according to a fourth embodiment of the present invention in a state where it is mounted on an observer's head.

FIG. 12 is an enlarged plan view schematically showing a partial cutaway of a main part structure of the image display device according to the fourth embodiment.

FIG. 13 is an overall side view schematically showing an outline of an apparatus configuration according to a fifth embodiment of the present invention in a state of being attached to an observer's head.

[Explanation of symbols]

A observer B observer's head Ba observer's left and right temporal regions C observer's face portion D observer's left and right eye parts E observer's left and right ears 10 head-mounted image display device 11 display Main body 12 Liquid crystal display element 12a Display surface 13 Projection optical system 14 Beam splitter 15 Concave mirror 15a Concave enlarged reflection surface of concave mirror 16 External light introducing shutter 21 Left and right liquid crystal display elements (left and right image display elements) 21a Display surface of each liquid crystal display element 22 Left and right projection optical system 23 Left and right beam splitters (half mirrors, prisms, etc.) 24 Left and right concave mirrors 24a Enlarged reflecting surface of each concave mirror 21 Head support means 22, 22a Substrate Frame members 23, 13a Left and right movable frame members 24 Left and right pivot pins 25 Left and right pad members 26 Left and right bars 31 Winding mechanism part 32 Left and right mounting wires 33 Winding shaft 34 Rotating knob 35 Winding base plate 36 Detent ratchet wheel 36a Ratchet wheel ratchet teeth 37 Guide pin 38 Sliding member 38a Ratchet pawl 39 Rewinding sliding knob 40 Guide hole 41 Spring 51 Traction mechanism section 52 Engaging substrate 53 Locking groove 54 Actuating elastic member 55 Actuating knob section 56 Locking knob 61 Winding mechanism section 62 Stepping motor 63 Winding shaft 64a Positive Reversing switch 64b Reversing switch 65 Power supply 66 Driver

Claims (3)

[Claims] 1. A display main body having an image display element for displaying an image and an eyepiece optical system for forming an exit pupil for guiding an image displayed on the image display element into an eyeball of an observer, An image display device, comprising: a head support means mounted and supported on the observer's head so as to hold the display main body in front of the observer's face portion, wherein the head support means is the display. A base frame member that is joined to or integrated with at least a part of the main body and has a shape that is curved or bent with the head side of the observer facing inward, and is connected to at least a part of the base frame member. At the same time, the movable frame is selectively operable in the direction in which the base frame member and the display main body are held or released by the observer's head with the connecting portion as a fulcrum. A video display device, characterized in that it comprises a chromatography arm member. 2. A display main body having an image display element for displaying an image and an eyepiece optical system for forming an exit pupil for guiding the image displayed on the image display element into an eyeball of an observer, An image display device, comprising: a head support means mounted and supported on the observer's head so as to hold the display main body in front of the observer's face portion, wherein the head support means is the display. A base frame member that is joined to or integrated with at least a part of the main body and has a shape that is curved or bent with the head side of the observer facing inward, and is connected to at least a part of the base frame member. And a movable frame member operable to hold and release the base body frame member and the display main body portion on the observer's head with the connecting portion as a fulcrum, and the base body. Relative frame member, the image display device, characterized in that it comprises an elastic member which elastically presses a direction to release said movable frame member from the head portion. 3. A display main body having an image display element for displaying an image and an eyepiece optical system for forming an exit pupil for guiding the image displayed on the image display element into an eyeball of an observer, An image display device, comprising: a head support means mounted and supported on the observer's head so as to hold the display main body in front of the observer's face portion, wherein the head support means is the display. A base frame member that is joined to or integrated with at least a part of the main body and has a shape that is curved or bent with the head side of the observer facing inward, and is connected to at least a part of the base frame member. And a movable frame member operable to hold and release the base body frame member and the display main body portion on the observer's head with the connecting portion as a fulcrum, and the base body. An elastic member that elastically presses the movable frame member against the frame member in a direction to release the movable frame member from the head, and an elastic member that operates against the base frame member in a direction to hold the movable frame member against the head. An image display device comprising: a flexible member, and a winding mechanism unit or a pulling mechanism unit that winds or pulls the flexible member against the elasticity of the elastic member.