JPH06334941A - Eye glass type display device - Google Patents

Abstract

PURPOSE:To shield the high voltage or high frequency noise of a light source which may exert adverse effects to the display part of a eye glass type display device. CONSTITUTION:A back light 30 and a pair of transmission type LCDs 25, 25 are arranged in a device body. Images projected on the display parts 25a of respective LCDs 25, 25 are expanded by a pair of eyepieces and respectively projected to the retinas of right and left eyeballs. An electromagnetic shielding plate 37 consisting of a sheet-like transparent electrode plate is arranged between the back light 30 and the LCDs 25. Consequently high voltage or high frequency noise Z generated from a fluorescent lamp 34 in the back light 30 is cut out by respective LCDs 25, 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a pair of eyeglasses capable of seeing a video image, a television image, and the like in a face-worn state, and at the same time, seeing an outside scenery (outside scene) while watching the image. Type display device.

[0002]

2. Description of the Related Art For example, the applicant of the present application discloses a spectacle-type display device capable of viewing video images and the like using an LCD in Japanese Patent Application No. 3-251667.
This similar structure will be briefly described with reference to FIGS. 27 and 28. Reference numeral 100 denotes a spectacle-type display device, which is a substantially casing-type device main body 101 serving as a front frame thereof, and is foldably attached to both sides of the device main body 101. The pair of handles 102 and 102 thus formed are eyeglass-shaped. Device body 10
An inverted V-shaped reflecting mirror 103 is attached on the inverted V-shaped nose pad 101a in the center of the lower part of the inside of FIG. A fluorescent tube 104 is arranged above the reflecting mirror 103, and a pair of transmissive color liquid crystal panels (image display means) 105, 105 are provided on both sides of the reflecting mirror 103 so as to straddle the nose pad 101a. Is erected. In each color liquid crystal panel 105, a convex condenser lens 106 is arranged via a deflecting plate 107 substantially integrally with the color liquid crystal panel 105.

In addition, the left and right eyeballs A in the apparatus main body 101,
A pair of convex eyepieces 108, 108 are arranged on the A side, and a pair of condenser lenses 106, 106 and a pair of eyepieces 108, 108 in the apparatus main body 101 are arranged.
A pair of rectangular plate-shaped reflecting mirrors 109 and 10 are provided between the reflecting mirrors 108 and 108.
9 are arranged respectively.

Reference numeral 102a in FIG. 28 is a headphone attached to each handle 102. In addition, the device body 10
The front side of 0 is opaque. Further, as shown in FIG. 27, a pair of rectangular eyepiece windows 101b and 101b are opened on the back side of the apparatus main body 101, and the pair of eyepiece windows 101b and 101b are used to form the pair of eyepiece lenses 1.
Each transparent window plate 110 for dust and scratch protection of 08, 108 etc.
They are closed at each.

Then, as shown in FIG. 28, the image displayed on the pair of color liquid crystal panels 105, 105 from a small portable VTR (not shown) with the spectacles type display device 100 mounted on the face is as follows. Fluorescent tube 104
And the pair of condenser lenses 106, 106 from the pair of reflecting mirrors 109, 109 and the pair of eyepieces 10
8 and 108, the images are enlarged and projected on the retinas a of the left and right eyeballs A and A. That is, the pair of color liquid crystal panels 10
The images created by 5, 105 are a pair of reflecting mirrors 109, 109.
And a virtual image magnified by the pair of eyepieces 108, 108 comes to the position of the clear vision distance.

[0006]

However, in the above-mentioned conventional eyeglass-type display device 100, the high-luminance fluorescent tube 104 is installed close to the pair of color liquid crystal panels 105, 105. The high voltage or high frequency noise generated from the fluorescent tube 104 often adversely affects the pair of color liquid crystal panels 105, 105.

Therefore, the present invention provides an eyeglass-type display device capable of cutting high-voltage or high-frequency noise generated from a light source of a backlight for each image display means.

[0008]

Glasses for enlarging each image of a pair of image display means provided in the main body of the apparatus by a backlight and a pair of eyepieces and projecting the images on the retinas of the left and right eyeballs, respectively. In the type display device, an electromagnetic shield plate is interposed between the image display means and the backlight.

[0009]

The high-voltage or high-frequency noise generated from the light source of the backlight is not shielded by the electromagnetic shielding plate and does not adversely affect each image display means. Further, since the electromagnetic shielding plate is composed of a sheet-shaped transparent electrode plate, the loss of transmitted light to each image display means of the backlight can be suppressed to a minimum.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes an eyeglass-type display apparatus, which is a substantially casing type (goggle-type) apparatus main body 10 which is located in front of the face and serves as an eyeglass section when it is worn on the head.
And an optical visual device 2 which is housed in the device body 10 and includes a pair of optical vision units 20 and 20 and a backlight 30, and a pair of hinge portions 3 provided on the rear sides of both sides of the device body 10. And a head mounting member 70 that is substantially annular with the back surface of the apparatus body 10 for mounting the apparatus body 10 on the face.

As shown in FIGS. 1 to 3, the main body 10 of the apparatus is a front cabinet 1 made of an opaque synthetic resin and having a substantially U-shaped vertical section.
1 and a rear cabinet 16 which is made of an opaque synthetic resin and which has a substantially U-shaped vertical cross section and which is joined and screwed to the rear peripheral portion of the front cabinet 11 to form a hollow casing. Below the front surface 11a of the front cabinet 11, there are provided semitransparent viewing windows 12 extending to both sides. This semi-transparent viewing window 12 is provided on the front surface 11a of the front cabinet 11.
The transparent plate 13 made of synthetic resin fitted in the large opening 11b formed in the upper part of the front cabinet 11 and the pair of hinge parts 1 protruding from the upper parts of the both side parts (both side surfaces) 11c, 11c of the front cabinet 11.
The transparent plate 13 is covered with the smoke plate 15 and a smoke plate 15 as a light-reducing means which is attached so as to be capable of jumping up in a substantially horizontal direction from the covered state. A round hole 11e is formed in the rear center of the upper piece (upper surface) 11d of the front cabinet 11, and the nose relief portion 1 is formed in the center of the lower piece (bottom surface) 11f of the front cabinet 11.
1 g is formed in an inverted U shape.

Rear piece 16 (rear surface) of the rear cabinet 16
a is a stepped portion whose upper half protrudes from the lower half, and the lower half has a transparent eyepiece window portion 1 extending to both left and right sides.
7 is provided. This transparent eyepiece window portion 17 is shown in FIGS.
As shown in FIG. 5, the rear piece 16a includes a wide opening 16b formed in the lower half and a transparent plate 18 made of synthetic resin fitted in the opening 16b. Further, as shown in FIGS. 4 and 5, both side portions (rear portions of both side surfaces) 16c, 16c of the rear cabinet 16 are arranged along the line of sight (the line of sight that is directed to the left and right outside by about 33 ° from the line of sight in the straight traveling direction). The respective corners on the rear side are formed to be inclined, and are cut out (the cutouts are indicated by symbols X and X in FIG. 5). Further, as shown in FIGS. 4 and 6, the lower piece portion (bottom surface) 16 of the rear cabinet 16 is
f is formed so as to be inclined along the line of sight (line of sight downward about 17 ° below the line of sight in the straight ahead direction), and the rear corner portion is in a cutout state (this cutout (The portion is indicated by the symbol Y in FIG. 6). As a result, the visual fields (outside field of view) of the left and right and the lower outside can be secured to the maximum extent. In addition, a nose relief portion 16g is formed in an inverted U shape in the center of the lower piece portion 16f of the rear cabinet 16, and the center portion of the transparent eyepiece window portion 17 is narrowed by the nose relief portion 16g. .

As shown in FIGS. 7 and 8, the pair of optical vision units 20 and 20 of the optical vision device 2 are made of synthetic resin and extend downwards 4a and 4b of front and rear sides of a frame 4 having a substantially side-faced side surface.
A pair of unit main bodies 21 and 21 of a square tube shape for the left eye and the right eye which are slidably supported in the left-right direction along a pair of shafts 5 and 5 which penetrate through An eyepiece lens 22 fitted and held in a horizontal state at a position facing the pair of shafts 5 and 5 in the unit main body 21.
And a reflection mirror (upper reflection plate) 23 fixed between the upper edges of both side pieces 21a, 21a formed in a triangular shape so that the upper edges of the unit bodies 21 are inclined by 45 °.
And a frame-shaped LCD holder that is supported vertically upright on the side of a backlight 30 to be described later, is positioned at a position facing the reflection mirror 23 of each unit body 21, and moves in the left-right direction together with each unit body 21. 24 and this LC
A transmissive color liquid crystal panel (hereinafter abbreviated as LCD) 25 as an image display means held by the D holder 24.
And fitting and locking between the respective lower extending portions 6a, 7a of the pair of left and right holders 6, 7 which hold both ends of the pair of shafts 5, 5 and the tip of the lower extending portion 4a on the front side of the frame 4, respectively. And a wide half mirror (lower reflecting plate) 26 held so as to be inclined at 45 ° with respect to the eyepiece lens 22.

The unit main bodies 21 of the pair of optical vision units 20 and 20 are made of synthetic resin and are opened on the upper and lower sides, respectively, and both side pieces 21a and 21a are formed in a rectangular cylindrical shape integrally formed in a triangular shape. Has been formed. As shown in FIGS. 7 and 11, holding portions 21b, 21c, and 21c that are inserted into the pair of shafts 5 and 5 are integrally formed on both sides of the front and center of the front surface of each unit main body 21, Holder 7 on the right side of the pair of shafts 5 and 5
When the interpupillary distance adjusting knob 8 rotatably supported to the side is rotated, the cam mechanism 40 and the link mechanism 50 are used to simultaneously reciprocate in the left and right directions in which they approach and separate from each other. There is.

As shown in FIGS. 3, 8 and 15-17,
The backlight 30 mirror-finishes the curved surface of the standing front surface facing each LCD 25 standing vertically, and
A reflector 31 formed by integrally projecting a slide plate 32 that extends horizontally forward from the center of the lower edge of the front surface and slides on the frame 4, and a recess 31a at the center of the front surface of the reflector 31.
1, a long rectangular substrate 33 attached to the substrate, a long fluorescent lamp 34 attached to the substrate 33, and a fluorescent lamp 34 mounted on the slide plate 32 to supply power to the fluorescent lamp 34 and the like. The power supply unit 35 shown in the figure and a pair of shafts 36, 36 extending leftward and rightward through the projections 31b, 31c integrally projecting on the upper and lower surfaces of the reflector 31 are roughly configured.

As shown in FIGS. 15 and 16, an electromagnetic shield plate 37 made of a sheet-shaped transparent electrode plate is interposed between the backlight 30 and the pair of LCDs 25, 25. As the sheet-like transparent electrode plate, a transparent conductive film having indium tin oxide (ITO) vapor-deposited on the surface of a polyester film is used, or ITO or gold is vapor-deposited on a diffuser plate for electroconductivity treatment. Use things etc. As a result, the high-voltage and high-frequency noise Z generated by the fluorescent lamp 34, which is a high-voltage driven high-frequency light source, is shielded and the light flux from the reflector 31 is transmitted to each LCD 25 side without loss. Further, the reflector 31 is formed by mixing a conductive material such as copper into a thermoplastic resin material. As a result, as shown in FIG. 17, the near electromagnetic field W generated by the fluorescent lamp 34 can be shielded by the reflector 31. In addition, the reflector 31 and the device body 10
An electromagnetic shield plate 39 made of a sheet-shaped conductive plate is interposed between the rear cabinet 16 and the rear piece (wall surface) 16a. 15 and 16, reference numeral 38a is a ground wire, reference numeral 38b in FIG. 17 is a ground wire, and 38c is a screw.

A pair of shafts 36 of the backlight 30,
A pair of LCD holders 24, 24 holding the LCDs 25 are arranged close to each other on the slide plate 32.
It is supported so as to be able to reciprocate in the left and right directions that separate from each other. That is, as shown in FIG. 3, at the upper and lower portions of the back surface of each LCD holder 24, the protrusions 24a penetrating each shaft 36,
24b is integrally formed. In addition, as shown in FIG. 8, three elongated slots 32 a, 3 are formed in the center of the slide plate 32.
2b and 32c are formed. Long slot 32 before and after this
a and 32c are a pair of pins 4 protruding from the upper surface of the frame 4.
The slide plate 32 is inserted into the c and 4c so as to slide in the front-rear direction on the frame 4. As a result, the backlight 30 and the pair of LCD holders 24 and 24 are connected to each other through the cam mechanism 60 by the turning operation of the diopter adjustment knob 9 rotatably supported in the small hole 4d of the frame 4. The pair of LCD holders 24, 24 are configured to reciprocate in the front-rear direction so as to move toward and away from each of the reflection mirrors 23, 21 of the frame 21, together with the pair of unit main bodies 21, 21. It is designed to reciprocate in the left-right direction in which they approach and separate from each other.

As shown in FIG. 11, the cam mechanism 40 is fitted to the interpupillary distance adjusting knob 8 and the interpupillary distance adjusting knob 8.
A cylindrical cam 41 rotatably supported by a holder 7 on the right side through a stop ring 42 and the like, a head 43a slidably supported in the cylindrical cam 41, and a base end portion 43b for the right eye. It is composed of a rod 43 fixed to the unit main body 21. The cylindrical cam 41 is provided with an oblique cam groove hole 41a. Further, a cam pin 44 as a cam floor that moves along the cam groove hole 41a is planted in the head portion 43a of the rod 43, and the head portion 43a of the rod 43 is made into a cylindrical shape by the turning operation of the interpupillary adjustment knob 8. The cam 41 is configured to move in the left-right direction. As a result, the right-eye unit body 21 is configured to reciprocate in the left-right direction along the pair of shafts 5 and 5. As shown in FIG. 23, the interpupillary distance adjustment knob 8 is exposed to the outside from the right side surface of the apparatus body 10.

As shown in FIGS. 11 and 12, the link mechanism 5
Reference numeral 0 denotes a rotary lever 51 rotatably supported on the lower surface of the frame 4 via a support shaft 52, and the rotary lever 5
A pair of pins 53, 53 protruding from both ends on the lower surface side of 1.
A pair of arms 54 and 54 pivotally supported by the pair of pins 53 and 53 and integrally formed on the one side piece portions 21a and 21a facing the frame 4 of the pair of unit main bodies 21 and 21, respectively. Has been done. This each arm 54
A long groove 54a is formed at the tip end side of each of which the pins 53 of the rotary lever 51 are loosely inserted. As a result, when the unit body 21 for the right eye moves toward the frame 4, the unit body 21 for the left eye also moves toward the frame 4, and the unit body 21 for the right eye moves away from the frame 4. When moved to, the unit body 21 for the left eye also moves in a direction away from the frame 4.

As shown in FIGS. 8 and 12, a cam mechanism 60 is provided.
Is a diopter adjustment knob 9 having a rod-shaped shaft 61 whose tip is rotatably supported in the small hole 4d of the frame 4 and a disc-shaped eccentric cam plate 62, and an eccentric cam plate of this diopter adjustment knob 9. 6
A slide plate 32 in which a U-shaped cam groove 32d on which 2 slides is formed, and a flat surface on which a base portion 63a is rotatably supported by a pin portion 21d integrally formed on the rear surface of the unit body 21 on the frame 4 side. A pair of L-shaped cam arms 63, 6
3 and a frame 4 having a pair of cam groove holes 4e, 4e formed in a planar C shape into which the cam pin portion 63b integrally formed at the tip of each cam arm 63 is loosely fitted. As shown in FIGS. 1 and 2, the diopter adjustment knob 9 is exposed to the outside of the round hole 11e of the apparatus body 10.

On the upper part of the base portion 63a of each cam arm 63, a concave portion 63c having a U-shape in a plan view is formed so as to integrally project. Each LCD holder 2 is provided in each recess 63c.
4, a pin portion 24c integrally formed on the slide plate 32 side is loosely fitted. As a result, the slide plate 3
By moving 2 in the front-back direction on the frame 4, the diopter adjustment of the pair of eyepiece lenses 22, 22 is performed, and the pair of LCD holders 24, 24 approach and separate with the movement in the front-back direction. A slight movement in the direction is performed in conjunction with the convergence (angle) adjustment. That is, as shown in the principle explanatory diagram of the diopter and convergence adjustment shown in FIG. 25, the lens main planes H and 2 of the pair of eyepieces 22 and 22 are
Center line C _{O of} two lens optical axes C, C and a pair of LCDs
On each V-shaped line OP, O that connects the central points of 25, 25
P is a pair of LCDs 25, 25 is a pair of eyepieces 2
Convergence and diopter adjustment are interlocked by moving in parallel with respect to Nos. 2 and 22. At this time, if the pupil distance changes, each L
The inclination of the operation line OP of the CD 25 also changes, and in order to cause this change, each cam arm 63 rotatably supported by the pin portion 21d of each unit main body 21 must be tilted in synchronization with the interpupillary fluctuation. Therefore, each cam arm 63
The operation line OP is shown in FIG. 13 (c) by moving the cam pin portion 63b of FIG. 6 along each cam groove hole 4f of the frame 4.
As shown in (3), it is inclined so as to always pass through the origin O.

As shown in FIGS. 1 and 2, the head mounting member 70
Is a pair of first handle portions 71, 71 foldably supported by the apparatus body 10 via a pair of hinge portions 3, 3 and a central portion of each rear end of the pair of first handle portions 71, 71. The distal ends 72a, 72a are pivotally supported by pins, and the proximal ends 72 are
24b and 72b, a pair of second handle portions 72, 72 detachably attached to each other by an engaging hole portion 72c and a T-shaped boss portion 72d shown in FIG. 24, and the pair of first handle portions 71, 71. Of the inner surfaces 71a facing each other, and a forehead pad 80 detachably attached to a pair of locking portions formed of three pins 73 provided on the rear side of the inner surfaces 71a.

As shown in FIGS. 1 and 2, a pair of first handle portions 7
In the rear of the headphone 1, there is housed a headphone housing mechanism 75 for winding the cords of the headphones 74 for the left and right ears. A system board 76 having an LCD drive circuit mounted therein is housed in one first handle 71, and a power supply unit 77 is housed in the other first handle 71. Further, a connection cord 78 connected to, for example, a portable video player, a TV tuner, or the like is connected to the rear upper end of the other first handle 71.

As shown in FIGS. 18-20, the forehead pad 80
Is a rigid core member 81, 82, 82 made of hard resin or the like in the central portion and both side portions, and these core members 81, 82, 82.
And a bag-like cover 83 made of a flexible resin or the like, which is provided on the end sides of the core members 82, 82 on both sides so as to project by stitching or screwing. 7
It is composed of a pair of hooks 84, 84 which are detachably attached to the respective locking portions 73 of No. 1.

As shown in FIG. 18, a pair of recesses 83a, 83a are formed between the core members 81, 82, 82 of the cover 83 on the back side of the forehead pad 80.
The core members 82, 82 on both sides of the center 3a are freely bendable to the center member 81 side. Also,
As shown in FIG. 20, a plurality of small holes 81a and 82a for air permeability are formed in each core member 81 and 82.

Further, as shown in FIGS. 21 and 22, each hook 84 is formed of a metal plate in a substantially V shape on the side surface, and the forehead pad 80 has an upper side of the forehead (for example, a horizontal direction as shown in FIG. 22). It is designed to hit a position that is raised by 15 °). Each of the hooks 84 has a spring property, and the tip end portion 84a is bent and formed in an inverted U shape. Further, a tongue-shaped engaging piece portion 84b is cut and bent in the middle of each hook 84 so that its tip end side is close to the tip end portion 84a.

According to the eyeglass-type display device 1 of the above embodiment, when the device body 10 is mounted in front of the face, it is mounted via the head mounting member 70. On the back surface 16a side of the apparatus main body 10 of the head mounting member 70, a forehead pad 80 provided with three rigid core members 81, 82, 82 in the central portion and both side portions and covered with a cover 83 is attached. For,
Wearability on the head is better. Further, the forehead pad 80 includes a pair of hooks 8 bent in a substantially V shape on the side surface.
A pair of first handle portions 7 of the head mounting member 70 via 4, 84
Three pins 73 attached to each inner surface 71a of 1, 71
As shown in FIG. 22, the upper portion of the user's forehead (for example, 15 ° from the horizontal direction) is locked because it is locked to each locking portion.
Surface contact with the upper part) and the apparatus main body 10 and the head mounting member 70
It is possible to disperse the weight and reduce the burden of wearing. As a result, the discomfort of wearing the apparatus main body 10 and the head mounting member 70 is small, and the ear or the like does not hurt even when worn for a long time, and it is possible to endure wearing and using for a long time. Further, each core member 81, 82, 8 of the forehead pad 80
Since 2 has a plurality of small holes 81a and 82a for air permeability, it has good air permeability, does not get stuffy, and can be worn comfortably even when used for a long time.

Further, as shown by the alternate long and short dash line in FIG. 21 (b), the engaging piece portion 84b of each hook 84 can be easily elastically deformed to the notch side, so that each of the first handle portions 71 is formed. It can be easily engaged and disengaged with any of the pins 73 of the attached locking portions. Thereby, the forehead pad 80 can be easily attached and detached, and the attachment position of the forehead pad 80 can be changed according to the head of the user. further,
When the eyeglass-type display device 1 is not used, as shown in FIG.
As shown in FIG. 3, the core members 81, 8 of the forehead pad 80 are
A pair of recesses 83a of the cover 83, which is the boundary between the two 82,
The forehead pad 80 can be folded around 83a.
As a result, the pair of second handle portions 72 of the head mounting member 70,
It is possible to release the locked state on the 72 side and fold the entire head mounting member 70 to make it compact, so that it does not take up space when stored.

In this way, after the apparatus body 10 is mounted on the front of the face by the head mounting member 70, the apparatus body 1
Looking into the transparent eyepiece window 17 of the rear cabinet 16 of 0,
By rotating the interpupillary adjustment knob 8 projecting to the right side of the apparatus main body 10 in the front-back direction, the eyepieces 22 of the pair of optical visual units 20, 20 are aligned with the left and right eyeballs A, A. That is, when the interpupillary adjustment knob 8 is rotated, as shown in FIG. 11, the cylindrical cam 41 of the cam mechanism 40 is moved.
Rotates. The rotation of the cylindrical cam 41 causes the rod 43 to move in the left-right direction via the cam pin 44 that moves along the oblique cam groove hole 41a of the cylindrical cam 41. When the rod 43 moves in a direction projecting from the holder 7 to the right side unit main body 21 side, the pair of left and right unit main bodies 21, 21 are connected via the link mechanism 50.
When the rod 43 moves in the left-right direction in which the rod 43 retreats from the holder 7 while moving in the direction of approaching each other along the frame 5, the pair of left and right unit bodies 21 and 21 move the pair of shafts 5 and 5 via the link mechanism 50. And move in the left-right direction away from each other along the frame 4.

By rotating the interpupillary adjustment knob 8 in this manner, each unit body 2 of the pair of optical visual units 20, 20 is located at the positions of the left and right eyes A, A of the user.
It is possible to surely match the position of 1, that is, the position of each spectacle lens 22. At this time, each cam arm 63 rotatably supported by the pin portion 21d of each unit body 21 moves in the left-right direction along the pair of shafts 36, 36 of the backlight 30, as shown by the arrow in FIG. The pair of LCD holders 24, 24 are
A pair of LCDs 2 are moved left and right along with
The positions of 5, 25 are also surely aligned with the positions of the left and right eyeballs A, A. When the pair of unit main bodies 21 and 21 move in the left-right direction along the pair of shafts 5 and 5, the cam pin portion 63b of each cam arm 63 is formed obliquely to the frame 4, as shown in FIG. 13 (c). Each cam groove hole 4
Move along e. As a result, each cam arm 63 rotates (swings) around the pin portion 21d of each unit main body 21 to become an inclination suitable for the position of each eyepiece lens 22, and each cam holder 63 is held by the pair of LCD holders 24, 24. L
The convergence of the virtual image of CD25 is also adjusted.

Further, a pair of optical vision units 20, 2
When the diopter adjustment of 0 is performed, the diopter adjustment knob 9 is rotated in the forward and reverse directions. By rotating the diopter adjustment knob 9, the eccentric cam plate 62 fixed to the tip side of the shaft 61 of the diopter adjustment knob 9 causes the slide plate 32 of the backlight 30 to move.
Eccentrically moves in the cam groove 32d formed in. That is, when the diopter adjustment knob 9 is rotated counterclockwise from the state shown in FIG. 14A, the slide plate 32 moves backward on the frame 4 as shown in FIGS. 14B and 14C. (Front in the figure)
And the pair of LCD holders 24, 24 are separated from the pair of unit main bodies 21, 21 together with the backlight 30. Further, when the diopter adjustment knob 9 is rotated clockwise from the state shown in FIG. 14C, the slide plate 32 moves forward (backward in the figure) on the frame 4 so that the pair of LCD holders 24, 24 is moved. The pair of unit bodies 21 and 21 approaches. In this way, the slide plate 32 of the backlight 30 is moved in the front-rear direction on the frame 4 to move the pair of L's.
The virtual image position is adjusted (diopter adjustment) by changing the distance between each LCD 25 held by the CD holders 24, 24 and each eyepiece lens 22 of the pair of unit main bodies 21, 21.

At the time of this diopter adjustment, the front and rear positions of each LCD 25 are determined by the position of the slide plate 32 of the backlight 30, but the pin positions 24c of each LCD holder 24 are inserted at the left and right positions of each LCD 25. Each cam arm 63 is constrained by a recess 63c. The cam arms 63 are
After the interpupillary adjustment of the pair of unit main bodies 21 and 21, it is stopped without rotating around the pin portion 21d of each unit main body 21, so that when the slide plate 32 is moved in the front-back direction on the frame 4, As shown in FIGS. 14A to 14C, the pin portion 24c of each LCD holder 24, which is constrained by the concave portion 63c of each cam arm 63, slides in the concave portion 63c of each cam arm 63 formed so as to project obliquely. To do. A pair of LCDs is formed by the inclined surfaces of the recesses 63c.
When the holders 24, 24 approach and separate from the pair of unit bodies 21, 21, the pair of LCD holders 24, 2
Reference numeral 4 moves in parallel along each of the V-shaped lines OP shown in FIG. 25, and adjusts the convergence of the virtual image of each LCD 25 by moving in parallel.

Thus, the pair of optical vision units 2
The eye width adjustment knobs 8 and the cam mechanism 4 are used to adjust the eye distances of 0 and 20.
The pair of optical vision units 20 and 20 can be easily and surely moved close to and away from each other in the left-right direction at the same time by the interpupillary distance adjusting mechanism having a simple structure including the 0 and the link mechanism 50. Further, the diopter adjustment of the pair of optical vision units 20 and 20 can be easily and surely performed by the diopter adjustment mechanism having a simple structure including the diopter adjustment knob 9 and the cam mechanism 60. Moreover, after adjusting the distance between the pair of eyepieces 22 and 22 to the distance between the left and right eyeballs A and A of the user with each mechanism having the above-mentioned simple structure, that is, the interpupillary distance adjusting knob 8, the diopter adjusting knob 9 is set. By turning, a pair of left and right LCDs 25, 2
5 is translated in the direction along each of the V-shaped lines OP, OP shown in FIG. 25, and the diopter and vergence adjustment are performed while the eye widths and vergence adjustments by the pair of left and right LCDs 25, 25 are matched. It is possible to realize a mechanism for changing the.

Next, the pair of headphones 74, 74 extending from the rear end sides of the pair of first handle parts 71, 71 of the head mounting device 70 are pulled out from the pair of headphone storage mechanisms 75, 75 to the outer ear. Each of the LCDs 25 of the pair of optical vision units 20 and 20 can be inserted from a portable video player or the like.
When an image is displayed on the display unit 25a of FIG. 16, as shown in FIG. 16, the light emitted from one fluorescent lamp 34 of the backlight 30 is reflected by the reflector 31 and each LC is converted into parallel light.
The display unit 25a of D25 is illuminated. The transmitted light of the irradiated light is reflected and transmitted to each eyepiece lens 22 by each reflection mirror 23, and the image viewed as transmitted light by each eyepiece lens 22 is reflected to the left and right eyeballs A and A by the half mirror 26, and You can see each retina a enlarged and
The audio of the image can be heard through each headphone 74.

As described above, the backlight 30 comprises the reflector 31 and one fluorescent lamp 34, and the LCD 25 of each of the pair of optical visual units 20 and 20 is provided by the one fluorescent lamp 34 via the reflector 31. Display section 25a
Since it is arranged to irradiate light to the pair of LCDs 25, 2
By eliminating the difference between the left and right color temperatures and the brightness of the image displayed on the image 5, it is possible to see the image with the same left and right color temperature and brightness.

Further, as shown in FIGS. 15 and 16, by interposing an electromagnetic shielding plate 37 made of a sheet-shaped transparent electrode plate between the reflector 31 of the backlight 30 and each transmissive LCD 25, each LCD 25 is provided. It is possible to suppress the loss of transmitted light to the minimum and to shield the high-voltage or high-frequency noise Z generated from the fluorescent lamp 34 or the like as a high-luminance light source (high-voltage driven high-frequency light source). As a result, it is possible to reliably prevent the LCD 25 from being adversely affected by the high-voltage or high-frequency noise Z, and to always display a clear image on the LCD 25. Further, since the loss of the transmitted light can be suppressed to the minimum, the power consumption can be minimized. Furthermore, if the electromagnetic shielding plate 37 is a diffusion plate subjected to conductive treatment, a diffusion effect can be exerted on the transmitted light.

Further, the fluorescent lamp 3 of the backlight 30 is used.
Although 4 is a generating part of the near electromagnetic field W, since the reflector 31 of the backlight 30 is configured by mixing a conductive material into a resin material, as shown in FIG.
The near electromagnetic field W generated from the fluorescent lamp 34 is reflected by the reflector 3
1 can be shielded and the influence of the electromagnetic field on the human body can be prevented. In addition, since the reflector 31 itself is made of a conductive material, the reflector 3
The ground wire 38b can be grounded freely by providing a place where the ground wire 38b is stopped by a screw 38c made of metal or the like. Further, since the reflector 31 itself is a conductor, it becomes a substitute for the proximity conductor necessary for smoothly starting the lighting of the cold cathode tube or the hot cathode tube of the fluorescent lamp 34 or the like, and the proximity for efficiently starting the lighting of the fluorescent lamp 34. No need for conductors,
Cost reduction can be achieved. Further, since the electromagnetic shield plate 39 made of a sheet-shaped conductive plate is interposed between the reflector 31 and the rear piece 16a of the rear cabinet 16 of the apparatus main body 10, the electromagnetic shield plate 39 leaks from the reflector 31. The near electromagnetic field W can be reliably shielded, and the influence of the electromagnetic field on the human body can be prevented.

As shown in FIG. 3, a backlight 30 and a pair of LCDs 2 are arranged in this order from the top in a casing-type device body 10.
5 and 25, a pair of upper reflecting mirrors 23 and 23, a pair of eyepieces 22 and 22, and a half mirror 26 as a lower reflecting plate are arranged, respectively. Each image can be projected on the retina a of each eyeball A through the half mirror 26 by so-called longitudinal refraction. Thereby, the pair of optical vision units 20, 2
The length of 0 in the left-right direction can be shortened as much as possible, and the whole can be made more compact, and the size and weight of the apparatus body 10 can be further reduced.

Further, as shown in FIGS.
Nose relief part 16 on the lower side of the rear part of 0 rear cabinet 16
Long transparent eyepiece window 1 that extends to the left and right on both sides of g
7 is provided, it is possible to reduce the amount of the rear cabinet 16 near the image viewed through the half mirror 26, reduce the blur in front of the eyes, improve the image quality, and eliminate the discomfort. Further, since the front cabinet 11 of the apparatus main body 10 is provided with the semitransparent viewing window portion 12 on the front surface 11a side, the transparent eyepiece window portion 1 of the rear cabinet 16 is provided.
The external view can be seen from the gap between the half mirror 26 and the rear cabinet 16 while viewing the image from 7. As a result, the transparent eyepiece window portion 17 of the rear cabinet 16 is formed to be long, so that the amount of visual field (external visual field) in the external world can be increased.

Further, as shown in FIGS. 5 and 6, both side pieces 16c, 16c and the lower piece 16f of the rear cabinet 16 which are rear portions of the both side surfaces of the apparatus body 10 are respectively inclined along the line of sight. Since the corner portions X, X, and Y are cut out, the external visual field blocked by the rear cabinet 16 can be minimized to maximize the external visual field. As a result, it is possible to reduce obstruction such as blurring due to so-called vignetting of the rear cabinet 16, and it is possible to concentrate on the image displayed on the half mirror 16.

FIG. 26 shows an eyeglass type display device of another embodiment. Similar to the above-described embodiment, the backlight 30, the pair of LCDs 25 and 25, the pair of upper reflection mirrors 23 and 23, and the pair of eyepieces are arranged in this order from the top in the housing body 10 'of the eyeglass-type display device. 22,22
And the lower reflecting plate 26 are respectively arranged, and the respective images reflected on the lower reflecting plate 26 are projected on the retinas a of the left and right eyeballs A and A, respectively. Also,
A rectangular opening 1 is provided on the bottom side of the casing type device body 10 '.
9 is provided. The lower reflection plate 26 is swingably provided in the front-rear direction via a hinge 27 at the lower portion on the front side of the apparatus body 10 'so that the opening 19 can be opened and closed. The lower reflection plate 26 is composed of a half mirror or a total reflection mirror. Since the other structure is the same as that of the above-mentioned embodiment, the same parts are designated by the same reference numerals and detailed description thereof will be omitted.

As a result, the pair of LCDs 25, 25
Each image can be projected on the retina a of each eyeball A through the half mirror 26 by so-called longitudinal refraction, and the length of the pair of optical visual units 20, 20 in the left-right direction can be shortened as much as possible. The whole body can be made compact, and the size and weight of the apparatus body 10 'can be further reduced. Further, when not in use, as shown by the dotted line in FIG. 26, the lower reflection plate 26 can be rotated via a hinge 27 so as to close the opening 19 formed on the bottom surface side of the apparatus body 10 '. Therefore, the height of the apparatus body 10 'can be made as short as possible, and from this point also, the apparatus body 10' can be made more compact and the overall size and weight can be further reduced. Also, when not in use, the lower reflection plate 26
Can be stored in the opening 19 of the device body 10 ',
The pair of eyepieces 22 and 22 can be protected from scratches and dust.

According to the above-mentioned embodiment, the openable smoke plate is provided on the front surface of the front cabinet of the apparatus body as a means for dimming external light. However, the dimming means is not limited to the smoke plate, and the polarizing plate is not limited to the smoke plate. A liquid crystal shutter (liquid crystal plate) including a beam splitter and a polarization filter may be used.

[0045]

As described above, according to the present invention, each image of the pair of image display means provided in the main body of the apparatus is magnified by the backlight and the pair of eyepieces to be displayed on the retinas of the left and right eyeballs. In the eyeglass-type display device that is made to project respectively, by interposing the electromagnetic shielding plate between the image display means and the backlight, high-voltage or high-frequency noise generated from the light source of the backlight for the pair of image display means. Can be reliably shielded by the electromagnetic shield plate. As a result, it is possible to prevent the above-mentioned noise from adversely affecting the pair of image display means, and it is possible to always display a clear image on each image display means.

According to the second aspect of the invention, since the electromagnetic shielding plate is composed of a sheet-shaped transparent electrode plate, the loss of transmitted light to the transmissive image display means of the backlight is minimized. You can keep it to the limit.

Further, according to the third aspect of the present invention, the electromagnetic shield plate is a diffuser plate that is subjected to a conductive treatment, so that the noise shield and the transmitted light of each transmissive image display means are used. The diffusion effect can be realized together.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an eyeglass-type display device showing an embodiment of the present invention.

FIG. 2 is a perspective view of the eyeglass-type display device.

FIG. 3 is a vertical cross-sectional view of a device body of the eyeglass-type display device.

FIG. 4 is a rear view of the apparatus body of the eyeglass-type display apparatus on the rear cabinet side.

FIG. 5 is an explanatory cross-sectional view showing the external shape of the apparatus body.

FIG. 6 is a vertical cross-sectional explanatory view showing the external shape of the apparatus main body.

FIG. 7 is a perspective view of an optical visual device used in the eyeglass-type display device.

FIG. 8 is an exploded perspective view of the optical visual device.

FIG. 9 is a rear view of the optical visual device.

FIG. 10 is a plan view of a pair of unit bodies of the optical visual device.

FIG. 11 is an enlarged plan view of a main part of the pair of unit main bodies.

FIG. 12 is an exploded perspective view of a main part of the pair of unit main bodies.

13A is a plan view of the pair of unit bodies, FIG. 13B is a plan view showing the relationship between the pair of unit bodies and a diopter adjustment knob, and FIG. 13C is a pair of unit bodies and convergence adjustment; The top view which shows a relationship.

14A, 14B, and 14C are plan views sequentially showing diopter and convergence adjustment of the optical visual device.

FIG. 15 is an exploded perspective view of a backlight of the optical visual device.

FIG. 16 is an explanatory diagram of a main part of the backlight.

FIG. 17 is a sectional view of the vicinity of the reflector of the backlight.

FIG. 18 is a transverse cross-sectional view of a forehead pad used in the eyeglass-type display device.

FIG. 19 is a front view of the forehead pad.

FIG. 20 is a front view showing a part of the forehead pad broken away.

FIG. 21 (a) is an enlarged perspective view showing a hook of the forehead pad, and FIG. 21 (b) is a cross-sectional view showing a locked and unlocked state of the hook.

FIG. 22 is an explanatory view showing a wearing state of the forehead pad and the head.

FIG. 23 is a plan view showing a state where the spectacles type display device is folded.

FIG. 24 is an explanatory view showing an engagement / disengagement portion of a head-mounted member used in the eyeglass-type display device.

FIG. 25 is an explanatory view of the principle of the diopter and convergence adjustment of the eyeglass-type display device.

FIG. 26 is a vertical cross-sectional view of a device main body of a glasses-type display device of another embodiment.

FIG. 27 is a schematic configuration diagram of a conventional eyeglass-type display device.

FIG. 28 is a perspective view showing a usage state of a conventional eyeglass-type display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Glasses type display device 10 ... Device body 22, 22 ... A pair of eyepieces 25, 25 ... A pair of LCDs (a pair of image display means) 30 ... Backlight 37 ... Electromagnetic shielding plate A ... Eyeball a ... Retina

Claims (3)

[Claims] 1. A spectacle-type display device in which each image of a pair of image display means provided in the device body is magnified by a backlight and a pair of eyepieces and projected on the retinas of the left and right eyeballs, respectively. An eyeglass-type display device characterized in that an electromagnetic shielding plate is interposed between the image display means and the backlight. 2. The eyeglass-type display device according to claim 1, wherein the electromagnetic shielding plate is formed of a sheet-shaped transparent electrode plate. 3. The eyeglass-type display device according to claim 1, wherein the electromagnetic shielding plate is a diffusion plate subjected to a conductive treatment.