JPH04287583A - Spectacles type tv monitor - Google Patents

Abstract

PURPOSE:To allow the viewer to enjoy a TV broadcast and a reproduced signal of a VTR for a long time without fatigue of eyes by seeing a light from a subminiature picture monitor through left and right eyepiece lenses by means of a mirror system. CONSTITUTION:The monitor 1 is of a spectacles type, and the user wears the monitor on ears and the monitor 1 is provided with a liquid crystal display panel 15 able to display a video image of a TV broadcast or a VTR reproduced picture and arranged to a side of a hollow front bridge part 5, an earphone 25 for audio output reproduction, a couple of left and right eyepiece lenses 27, 29, a full reflection mirror 33 in front of the lens 27 and a half mirror 31 in front of the lens 29 to lead the light from the panel 15 to the lenses 27, 29. Moreover, a structure to shield external light is adopted between the panel 15 and the lenses 27, 29. Furthermore, since an optical length between the panel 15 and the lens 27 and that between the panel 15 and the lens 29 differ from each other, for the purpose the video image of the same size is observed by the left and right eyes, a focus adjustment lens 3 is provided between mirrors 31 and 33 to adjust left and right magnification, then the lenses 27, 29 of the same magnification are used. Thus, fatigue of eyes is reduced.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable monitor for viewing television broadcast images and VTR reproduced images.

0003

2. Description of the Related Art In recent years, portable television receivers equipped with a liquid crystal monitor consisting of a liquid crystal panel and a backlight have become popular.

[0004] Also, unlike a CRT, such a liquid crystal monitor has advantages such as being small and lightweight, consuming less power, and being able to display color.
As shown in FIG. 2, it is also used as a playback display monitor 101 of a small VTR device 100.

Furthermore, as shown in FIG. 5, an electronic view finder (EVF) 103 that has begun to be used in a VTR movie camera 102 has a liquid crystal panel 104 of about 1 inch in size and an ultra-small fluorescent lamp 105. A liquid crystal monitor is used, and the playback screen of the movie camera is enlarged three to four times by an eyepiece 106 for viewing.

[0006]

[Problems to be Solved by the Invention] The conventional small-sized VTR playback display monitor 101 shown in FIG. It is too bulky to be used on a train, airplane, or bus. In addition, it is necessary to increase the brightness of the backlight in order to see it in a bright environment inside the car.
The power consumption of a liquid crystal monitor is 4 to 5 W, which consumes a lot of battery power, and it must be said that it is not suitable for long-term playback.

Since the electronic view finder 103 of the VTR movie camera shown in FIG. 5 is shielded from external light and has a small display area, the total power consumption is as low as about 1 W at most, making it a good choice in terms of power consumption. It is suitable for long-term use.

However, since this electronic view finder requires viewing with one eye, there is a problem in that it is very tiring to use it for a long time.

In order to solve the problems of the prior art described above, the present invention provides a portable monitor device that allows you to enjoy television broadcasts and VTR playback for a long time even on crowded trains, buses, airplanes, etc. The purpose is to provide

[Configuration of the invention]

[0011]

[Means for Solving the Problems] The monitor device of the present invention is in the shape of glasses, and includes a glasses-shaped frame that is placed over the user's ears, and a television set placed on one side of the frame. a single ultra-compact image monitor capable of displaying television broadcasting images or video tape recorder playback images; and earphones attached to the frame for reproducing television broadcasting or video tape recorder audio output; A pair of left and right eyepieces are arranged in a frame to face the eyes of a person, a mirror system guides light from the image monitor to the eyepieces, and light from the outside is passed between the image monitor and the eyepieces. means for shielding the vehicle from entering the vehicle.

Preferably, between the eyepiece closer to the image monitor and the eyepiece farther from the image monitor,
A lens movable along the optical axis of the mirror system is provided.

[0013]

Operation: Light from a single microscopic image monitor is guided by a mirror system to both left and right eyepieces, and the image displayed on the image monitor is magnified by the eyepieces. Since the user can view the enlarged image with both eyes, the user can enjoy television broadcasts and VTR playback for long periods of time without eye fatigue. This eyeglass-type monitor device is not bulky, so it can be used privately in any location.

[0014] When a lens movable along the optical axis of the mirror system is provided, the user adjusts the optical path lengths of the left and right eyepieces so that the size of the image reflected in the left and right eyes is equal. can do.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a partial cross-sectional view showing the internal structure of an eyeglass-type monitor device according to a first embodiment of the present invention. Referring to FIG. 1, this monitor device 1 has an eyeglass-shaped frame 3, which includes a hollow front bridge portion 5 extending parallel to the user's face, and left and right sides. It has section members 7 and 9. Like regular eyeglass frames,
The side members 7, 9 are pivotally connected to the front bridge portion 5 of the frame by hinges 11, 13 and are foldable for portability. This monitor device 1 can be used with the free ends of the side members 7 and 9 hung over the user's ears and the bridge portion 5 supported on the nose, like ordinary eyeglasses. .

In the first embodiment shown in FIG. 1, a color liquid crystal panel 15 of approximately 1 inch in size is fixed within the right side of the hollow front bridge portion 5, and an R. G. A backlight 17 consisting of a combination of an ultra-compact fluorescent lamp with a B wavelength band and a reflector is arranged. A circuit unit 19 including a video processing circuit for driving the liquid crystal panel 15 and an inverter circuit for lighting the backlight 17 is housed in the right side member 9 . Video, audio, and power input terminals 23 are soldered to the circuit board 21 of the circuit unit 19, and the video, audio, and power input terminals 23 are soldered to the board 21 of the circuit unit 19, and based on the video output from a portable TV receiver or portable VTR carried by the user, TV broadcast images or Images reproduced from the VTR are displayed on the liquid crystal panel 15. Audio signals from a portable TV receiver or VTR are played through earphones 25.

A pair of eyepiece lenses 27 and 29 are arranged in the hollow front bridge portion 5 to face the left and right eyes of the user. In the illustrated embodiment, the liquid crystal panel 1
There is a half mirror 3 in front of the right eyepiece 29 near 5.
1 is arranged, and a total reflection mirror 33 is provided in front of the left eyepiece 27. The half mirror 31 reflects half of the light emitted from the liquid crystal panel 15 and the backlight 17 toward the right eyepiece 29, and
The afterglow is transmitted toward the total reflection mirror 33 in front of the left eyepiece 27. The light transmitted through the half mirror 31 is reflected toward the left eyepiece 27 by the total reflection mirror 33. Therefore, the user can view the image displayed on the liquid crystal panel 15 and magnified by the left and right eyepieces 27 and 29 with both the left and right eyes. The hollow front bridge part 5 is
It has a sealed structure that prevents light from entering from outside except for the openings for the eyepieces, and serves as a shielding means, and eye hoods 35 are provided at the openings of the eyepieces 27 and 29, respectively. Therefore, the image on the liquid crystal panel can be easily viewed without increasing the brightness of the backlight 17.

Since the optical path lengths between the liquid crystal panel 15 and the left and right eyepieces 27 and 29 are different, in order for the left and right eyes to view an image of the same size, it is necessary to change the magnification of the left and right eyepieces. Therefore, preferably, a focusing lens 3 is provided between the half mirror 31 and the total reflection mirror 33.
7 is provided, and the mirror system is moved along the optical axis by a rotating member 39. In this way, lenses with the same magnification can be used as the left and right eyepieces.

As a variation of this embodiment, the glasses-type monitor can be modified to allow viewing of stereoscopic TV broadcasts. In that case, the half mirror 31 in FIG.
A total reflection mirror is used instead, and a plunger 43 is used to rotate this total reflection mirror around a pivot 41 in the direction of the arrow in synchronization with the blanking of the TV signal.
will be established. Then, by instantaneously rotating this mirror 31 with the plunger 41 in synchronization with blanking, for example, odd fields of the image are sent to the right eye, and even fields of the image are sent to the left eye. In this way, you can enjoy powerful 3D images.

FIGS. 2 and 3 show a second embodiment of the present invention, and elements having the same functions as those of the embodiment shown in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted. This second embodiment is characterized in that a tuner is mounted on an eyeglass-shaped frame, making it a complete portable TV, and that a liquid crystal panel is arranged parallel to the user's face.

That is, as shown in FIG. 3, the color liquid crystal panel 15 is disposed on the right side member 9 of the frame and extends parallel to the bridge portion 5. A backlight 17 consisting of a combination of an ultra-compact fluorescent lamp and a reflector is arranged in the right side member 9 of the frame in front of the liquid crystal panel 15. A third mirror 45 is provided on the right side of the hollow bridge portion 5 to reflect light from the liquid crystal panel 15 and the backlight 17 toward the half mirror 31. A dustproof transparent plate 47 is provided between the liquid crystal panel 15 and the third mirror 45. Note that in order to view stereoscopic TV broadcasts, a total reflection mirror is used in place of the half mirror 31, and a total reflection mirror is used in place of the half mirror 31, as well as a A plunger 43 can be provided.

A circuit unit 19 including a video processing circuit for driving the liquid crystal panel 15 and an inverter circuit for lighting the backlight 17 is housed in the right side member 9, as in the first embodiment. An input terminal 23 for connection to a portable VTR may also be provided. A tuner, a signal processing circuit, and a battery are housed in the space within the left side member 7 of the frame. As shown in FIG. 2, an antenna 49 is provided on the front bridge member 5, and a power ON/OFF switch 5 is provided on the left side member 7 of the frame.
1. A TV channel selection switch 53 and an audio adjustment switch 55 are provided.

Since this second embodiment is equipped with an antenna and a tuner, it can be used as a portable TV. Furthermore, when the input terminal 23 is connected to an external portable VTR, it can be used as a VTR playback monitor.

[0025]

[Effects of the Invention] As described above, the eyeglass-type monitor device of the present invention guides the light from the ultra-compact image monitor to both the left and right eyepieces using the mirror system, so that the image can be viewed with both the left and right eyes. This allows the user to enjoy television broadcasts and VTR playback for long periods of time without causing eye fatigue. Further, this eyeglass-type monitor device is small, lightweight, and convenient to carry, and allows TV broadcasts and VTR playback to be easily viewed even in a crowded car.

[0026] In addition, it blocks external light from entering between the image monitor and the eyepiece, and maximizes the use of backlight light, allowing long-term use with low power consumption. can do.

According to a preferred embodiment of the present invention, if a lens is provided that is movable along the optical axis of the mirror system, the user can adjust the optical path lengths of the left and right eyepieces to adjust the image reflected in the left and right eyes. The sizes can be adjusted to be equal.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing the internal configuration of an eyeglass-type monitor device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the external appearance of a glasses-type monitor device according to a second embodiment of the present invention.

FIG. 3 is a partial sectional view of an eyeglass-type monitor device according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing the appearance of a conventional small-sized VTR device equipped with a liquid crystal monitor.

FIG. 5 is a perspective view of a conventional VTR movie camera equipped with an electronic view finder with a liquid crystal monitor.

[Explanation of symbols]

1......Glasses type monitor device 3......Glasses type frame 5......Front bridge member of the frame (light shielding means) 7
, 9... Frame side members 15/17... Image monitor 15... Liquid crystal panel 17... Backlight 25... Earphones 27, 29... Eyepieces 31, 33... Mirror 37... Focus adjustment lens 45……Third mirror

Claims (2)

[Claims] Claim 1: A glasses-shaped frame that is worn over the ears of a user; and a frame that is placed on either side of the frame and displays images of television broadcasting or images reproduced from a video tape recorder. a single ultra-compact image monitor capable of displaying a camera; a pair of earphones mounted on the frame for playing the audio output of a television broadcast or a video tape recorder; A pair of left and right eyepieces, a mirror system that guides light from the image monitor to the eyepieces, and means for blocking light from the outside from entering between the image monitor and the eyepieces. . A glasses-type monitor device, characterized in that the image displayed on the single image monitor can be viewed with both left and right eyes. 2. A lens movable along the optical axis of the mirror system is provided between an eyepiece closer to the image monitor and an eyepiece farther from the image monitor, and the image reflected in the left and right eyes is provided. 2. The eyeglass-type monitor device according to claim 1, wherein the magnification ratios of the glasses are made equal.