JP3250236B2 - Video display device - Google Patents

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, and more particularly, to a glasses-type image display device for watching a video image.

[0002]

2. Description of the Related Art
As a device using a small liquid crystal panel and directly viewing the liquid crystal panel with the naked eye, a viewfinder of a video camera is known. In this device, the backlight of the liquid crystal panel is once scattered by a diffusion plate. For this reason, the light source required larger intense light than the light passing through the liquid crystal panel.

Also, in the invention according to Japanese Patent Application No. 63-291935, a technique is disclosed in which an image on an image plate (film) is projected directly onto the retina of an eyeball by a point light source. However, according to this conventional technique, it is necessary to accurately position the eyepieces for both eyes, and since it is a point light source, the eyelashes and dust on the lens are disadvantageously seen as a shadow on an image.

[0004] Furthermore, the conventional glasses-type video device used by being worn on the face has a problem that the size of the glasses-type device body becomes large.

The present invention has been made in view of such conventional problems, and has provided an image display device which has high efficiency of the amount of light of the backlight and allows the entire screen to be clearly seen. It is assumed that.

[0006]

SUMMARY OF THE INVENTION Therefore, the invention according to claim 1 provides a backlight and a backlight in an eyeglass-type apparatus main body.
A liquid crystal panel, wherein an image of the liquid crystal panel is projected onto a retina of an eyeball by light irradiation of the backlight, and the liquid crystal panel extends along an inner surface of an inverted V-shaped nose pad of the device body. anti <br/> Ikyo arranged to reflect backlight Te, substantially perpendicular to the light irradiated to the liquid crystal panel from the backlight by <br/> the reflector between the backlight and the liquid crystal panel Is the solution.

[0007] The invention according to claim 2 is the invention according to claim 1.
In the image display device, a small amount of
At least a convex lens having an area larger than the screen of the liquid crystal panel
And pass the liquid crystal panel with the convex lens
Light is collected, and the light that has passed through the convex lens is
To focus the image onto the retina of the eyeball.
That is the solution.

[0008] The invention according to claim 3 is the invention according to claim 1.
In a video display device, a back
A backlight and two liquid crystal panels;
Irradiates light substantially perpendicular to each liquid crystal panel.
On the entire surface of the panel and placed in front of the LCD panel
Through a convex lens having an area larger than the screen of the panel
By the light irradiation, the image of each liquid crystal panel is
Projecting each onto the retina is the solution.

[0009]

[0010]

According to the first aspect of the present invention, the entirety of the eyeglass-type device is provided.
Backlight along the inside surface of the inverted V-shaped nose pad
A reflecting mirror for reflecting the backlight and the liquid
Illuminated from the backlight by the reflector between crystal panels
By irradiating the light to the liquid crystal panel substantially perpendicularly, it is possible to satisfactorily project an image on the liquid crystal panel, and to use the light efficiently. For this reason, it is possible to suppress the consumption of power consumption and extend the life of the light source.

According to the second aspect of the present invention, the liquid crystal panel
LCD panel with a convex lens with a larger area than
Peek at the screen at a close distance
The entire screen without blurring the edges of the screen.
Comes to fit. Also, focus the image with a convex lens
Look at the enlarged screen to project it onto the retina of the eyeball.
And become possible.

According to the third aspect of the present invention, an eyeglass-type device is provided.
Back along the inside surface of the body of the inverted V-shaped nose pad of the body.
By arranging a reflector that reflects the light, one
2 sheets placed at positions corresponding to both eyes from the backlight
To irradiate light on the LCD panel
It becomes possible to have a base structure. In addition, the video is
By condensing with a convex lens larger than the crystal panel,
It is possible to see the enlarged large screen clearly with both eyes
You.

According to the third aspect of the present invention, the liquid crystal of the liquid crystal panel is efficiently extracted by applying the light of the backlight substantially perpendicularly to the liquid crystal panel, and the image is condensed by a convex lens larger than the liquid crystal panel. This makes it possible to clearly see the enlarged second screen with both eyes.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the video display device according to the present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view of the appearance of the image display device of the present embodiment as viewed from the front side, and FIG.
FIG. 3 is an exploded perspective view, and FIG. 4 is an exploded perspective view of the visual device. In the figure, reference numeral 1 denotes a video display device, which is a spectacle unit 2 which is a main body of the device which is located in front of the face at the time of wearing, vines 3 and 3 attached to both sides of the spectacle unit 2, The visual device 4 is generally configured.

The spectacle section 2 has a front glass section 6 which is a half mirror or a colored glass, which is equivalent to a lens of sunglasses, fitted on the front of the frame section 5 and the front glass section on the back side of the frame section 5. The rear panel 7 is provided so as to be substantially parallel to the front glass section 6 so as to form an internal space between the rear glass panel 6 and the front glass section 6. Transparent glasses 8 are fitted into the back panel 7 at positions where both eyes face each other when worn, so that the front of the glasses section 2 can be seen through the transparent glass 8 and the front glass section 6. Is available.

An earbud headphone 9 is attached to the temples 3 on both sides of the spectacles unit 2, and an operation button 10A used for adjusting, for example, a sound volume, image brightness and the like is provided outside the temple 3 on the outside. , 10B, and 10C are attached.

As shown in FIGS. 3 and 4, the visual device 4 includes an optical system fixing unit 11, two liquid crystal panels 12 fixed to the optical system fixing unit 11, a backlight 13,
It is roughly composed of an electric board 14.

First, the optical system fixing section 11 has a rectangular nose pad 15 at the lower center thereof and an upper edge portion integrally provided so as to form an inverted V shape. A portion 16, bottom plates 17, 17 extending laterally from the lower edge of the nose pad 15, a rising plate 18 rising from the rear edges of the nose pads 15, 15 and the bottom plates 17, 17; From both side positions of the nose pad 16 on the rising plate 18,
A liquid crystal panel fixing plate 19 extending forward from the bottom plates 17, 17 and extending forward from both side edges of the rising plate 18;
A reflection mirror fixing plate 20 facing the liquid crystal panel fixing plate 19 at an angle of 45 °.

On the upper surfaces of the nose pads 15, 15, light from the backlight 13 is applied to the liquid crystal panel fixing plate 1.
9 so as to be reflected substantially perpendicularly to the mirror 9.
1 is pasted. Also, the liquid crystal panel fixing plate 1
At the center of 9 and 19, convex lenses 22 larger than the screen of the liquid crystal panel 12 are fitted respectively. An L-shaped guide portion 19a is formed at the front edge of the solid plate 19 so that the liquid crystal panel 12 can be inserted along the opposing surfaces of the liquid crystal panel fixing plates 19,19. On the other hand,
On the rising plate 18 side, piers 18a, 18 extending in the vertical direction into which the liquid crystal panel 12 can be inserted between the rising plate 18 and the fixing plate 19 can be inserted.
a is formed. Further, the reflector fixing plates 20, 20
The reflecting mirrors 23 are respectively fixedly provided on the inner side surfaces. Eyepieces 24 and 24 are fitted into the rising plate 18 so that the image reflected from the reflection mirror 23 from the liquid crystal panel 12 side can be viewed in an enlarged manner.

The liquid crystal panel 12 and the backlight 13
The liquid crystal panels 12, 1 are wired to the electric board 14 side.
2 is mounted on the liquid crystal panel fixing plates 19, 19, respectively, and the backlight 13 and the electric board 14 can be fixed on the upper part of the rising plate 18. Also, the electric board 1
4 are provided at both ends with connectors 25 and 25. Headphones 9 and operation buttons 10 provided on the vines 3 and 3 are provided.
Connectors 26, 2 provided on the wiring on the side of A, 10B, 10C
6. In addition, a connection cord 27 for connecting to, for example, a portable video player or the like is connected to the electric board 14.

As shown in FIG. 5, the backlight 13 comprises a fluorescent tube 13A and a semi-cylindrical curved mirror 13B so that parallel light is emitted downward.

With this configuration, this embodiment is
The direction of the parallel light from the backlight 13 is changed by the reflecting mirrors 21 and 21 provided on the nose pad 16, and the liquid crystal panel 12 is illuminated almost vertically from the back surface and transmitted through the entire screen 12 a of the liquid crystal panel 12. The parallel light is collected by the convex lens 22, reflected by the reflecting mirror 23, and incident on the eyepiece 24. In the eyepiece 24, this incident light is further condensed. Therefore, when the user brings his or her eyes close to the eyepiece lens 24, the image on the screen 12a of the liquid crystal panel 12 appears to be enlarged.

As shown in FIGS. 2 and 6, when the eyepiece lens 24 is viewed, an image of the liquid crystal panel 12 can be viewed, and when the transparent glass 8 is viewed, the outside world can be viewed.

Next, the video display circuit 30 built in the video display device 1 will be described with reference to FIG. The video display circuit 30 includes a battery 31 which is a power source of a power supply 32 for driving a liquid crystal panel, an inverter power supply 33 for a backlight, and a power supply 34 for an amplifier.
A headphone variable device 36 connected to the power / volume control buttons provided on the temple 3 and a liquid crystal bright variable resistor 37 connected to the brightness control buttons of the liquid crystal panel. A video input jack 39 for connecting a video signal from an external source such as a portable video player to the RGB process circuit 38 is provided.

Then, the video signal from the video input jack 39 is input to the RGB process circuit 38 for signal processing. The R (red), G (green), and B (blue) signals processed by the RGB process circuit 38 are input to the controller circuit 44, and the respective X driver circuits 45 (45 _R , 4
5 _L), through each Y-driver circuit _{46 (46 R, 46 L)} , and drives the liquid crystal panels _{12 (12 R, 12 L)} .

One fluorescent tube 13 A, which is a light source for supplying parallel light to the liquid crystal panel 12, is turned on by a backlight inverter power supply 33. The power supply 32 for driving the liquid crystal panel, the inverter power supply 33 for the backlight, and the power supply 34 for the amplifier are turned on / off by a switch 47 provided on the battery 31 side.

Although the embodiment has been described above, the present invention is not limited to this, and various design changes accompanying the gist of the configuration are possible.

For example, in the above embodiment, the convex lens 22 is disposed in front of the liquid crystal panel 12 so as to reduce the distortion of the screen.
1 may be arranged.

Further, in the above embodiment, the portable video player is connected, but as shown in FIG.
It is also possible to use it as a viewfinder of a VTR. For example, when a video taken by a VTR is broadcasted on a TV, a TV tuner is used to check the image by watching a TV image and switch to a viewfinder function as necessary. If you do, you can take good pictures.

Further, in this embodiment, the front glass portion 6 is made of a half mirror or colored glass, but may be made of an opaque plate if necessary, and the material is limited to glass. Not something.

In this embodiment, the operation buttons 10
A, 10B, and 10C are arranged on the side of the vine 3. However, the setting position is not limited to this, and the number of operation buttons can be appropriately changed.

Further, in this embodiment, the structure of the nosepiece 16 is provided with the reflecting mirror 21 so that the structural space can be saved. If so, another structure may be used.

[0034]

As is apparent from the above description, in the video display device according to the present invention, the vertical light is applied to the liquid crystal panel, and since there is no light diffuser, the light use efficiency is high, and therefore the light source Since only a small amount of light is required, the power consumption may be small, the life of the light source is extended, and for example, there is an effect that the battery can be used for a long time. Ma
In addition, by making the light applied to the liquid crystal panel parallel light,
This has the effect of focusing the entire screen.

[0035] Also, in the invention of claim 1, the nose pad
By installing a reflecting mirror using the
Has the effect of achieving

According to the second aspect of the present invention, the convex lens
By placing the camera in front of (outside) the LCD panel,
In addition to the effect of enlargement, it has the effect of preventing image distortion.
You.

Furthermore, in the invention of claim 3, one
2 sheets placed at positions corresponding to both eyes from the backlight
To irradiate light on the LCD panel
Base structure.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of an embodiment of the present invention.

FIG. 3 is an exploded perspective view of the embodiment of the present invention.

FIG. 4 is an exploded perspective view of the embodiment of the present invention.

FIG. 5 is a perspective view showing the operation of the embodiment of the present invention.

FIG. 6 is a perspective view showing a use state of the embodiment of the present invention.

FIG. 7 is a perspective view showing a use state of the embodiment of the present invention.

FIG. 8 is a circuit diagram used in an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Video display apparatus, 12 ... Liquid crystal panel, 13 ... Backlight, 13A ... Fluorescent tube, 16 ... Nose pad, 22 ... Convex lens, 24 ... Eyepiece.

Continuation of the front page (56) References JP-A-2-281189 (JP, A) JP-A-3-101709 (JP, A) JP-A-1-289913 (JP, A) JP-A-1-121821 (JP) JP-A-2-301793 (JP, A) JP-A-1-150117 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02F 1/13357 G02B 27/02 G02F 1/13 505 H04N 5/74

Claims (3)

(57) [Claims] 1. An image display apparatus comprising: a backlight and a liquid crystal panel in an eyeglass-type apparatus main body, wherein an image of the liquid crystal panel is projected onto a retina of an eyeball by light irradiation of the backlight. Along the inner surface of the inverted V-shaped nose pad of the device body
A reflecting mirror for reflecting a backlight is disposed, and light emitted from the backlight by the reflecting mirror is applied between the backlight and the liquid crystal panel substantially perpendicularly to the liquid crystal panel. Video display device. 2. A convex lens having at least a larger area than a screen of the liquid crystal panel is arranged in front of the liquid crystal panel, the light passing through the liquid crystal panel is condensed by the convex lens, and the light passing through the convex lens is further condensed. The image display device according to claim 1, wherein the image is converged by an eyepiece to project an image onto a retina of an eyeball. 3. A spectacle-type apparatus main body includes a backlight and two liquid crystal panels, and by applying light from the backlight, light substantially perpendicular to each liquid crystal panel is applied to the entire surface of the panel. 2. The image of each liquid crystal panel is projected onto the retina of both eyes by the light irradiation through a convex lens having an area larger than the screen of the panel disposed in front of the liquid crystal panel. Video display device.