JPH05304646A - Video display device - Google Patents

Abstract

PURPOSE:To automatically see the situation of an outside field in order to immediately cope with the change of the outside field, or an emergency situation, in a video display device mounted on a face, in which parts except a display part are covered. CONSTITUTION:A prescribed sensor such as a impulse sensor or a sound sensor is provided in a main body 2. At the time of detecting, for example, the rapid movement of a neck, impulse, and sound due to one's will or an outside factor by the above mentioned prescribed sensor, the display of a video or a voice in the main body is immediately stopped, and the outside field can be seen by opening a shielding part constituted of a black and while liquid crystal panel 3.

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,
In particular, the present invention relates to a spectacle-type image display device having a liquid crystal panel for displaying an image based on a video signal and equipped with earphones capable of listening to a sound.

[0002]

2. Description of the Related Art As a spectacle type image display device of this type, one having a structure disclosed in Japanese Patent Application Laid-Open No. 4-23582 filed by the same applicant is well known as a conventional example. In general, in this type of image display device, it is possible to enjoy the image and the like by immersing it in the image by making the outside world invisible so that only the image can be seen. However, the fact that the outside world cannot be seen is the same as the case where the view is taken away, and it is extremely dangerous in an emergency such as an earthquake or the approach of a malicious person.

Therefore, in the above-mentioned conventional example, a mechanism for flipping up the visual part in an emergency has been proposed. However, also in this conventional example, the operation of "lifting the visual part by hand" is necessary.

[0004]

SUMMARY OF THE INVENTION The bounce means of the visual part in the above-mentioned conventional example does not operate automatically and there is a delay in the time response in an emergency, and at the same time, the bounce operation is confusing and time-consuming. There was an inconvenience. Therefore, the conventional example has a problem that it is necessary to solve the problem that the outside world can be seen quickly in an emergency in any state of use.

[0005]

As a concrete means for solving the above-mentioned problems of the conventional example, the present invention mounts a spectacle-type device body equipped with a light source and a liquid crystal panel on the face, and displays an image of the liquid crystal panel. An image display device configured to be viewed, in which a portion other than the liquid crystal panel is provided with a shielding portion for the outside world, and a predetermined sensor is equipped, and the sensor is used for sudden movement, impact, or sound of a predetermined level. The image display device is characterized in that the shielding part is opened so that the outside world can be seen when it is sensed that the shielding part is composed of a black and white liquid crystal panel, and the light transmittance of the black and white liquid crystal panel is adjusted. An image display device characterized by allowing the outside world to be seen through from the outer peripheral portion of the image, wherein the device body and the head mounting part to be mounted on the face are separated, and the device body is biased in the opening direction. Connected freely to open and close An image display device characterized in that when a predetermined sensor senses a sudden movement or impact, the device body jumps up to open the outside world, and the predetermined sensor is an impact sensor or a sound sensor. The device is an image display device that stops the sound of the earphone at the same time as the opening of the shield, or opens the sound through the earphone and the external sound.

[0006]

According to the present invention, when the image is viewed, the outside is shielded and the shield is automatically opened to allow the outside world to be seen through when a sudden movement of the neck or a shock or sound due to an external factor is sensed. In the event of an emergency, the outside world can be seen through immediately and an appropriate response can be made.

Further, by forming the shielding portion with a black and white liquid crystal panel and adjusting the light transmittance so that the outside world can be seen through from the periphery of the image, the outside world can be observed in part while watching the image. Is something that can be done.

Furthermore, by making it possible to see through the outside world even when a change in the outside world sound is detected, it is possible to quickly respond to the changes in the outside world sound without moving the head.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiments. In the first embodiment shown in FIGS. 1 to 6, in the image display device 1, a black and white liquid crystal panel 3 is arranged in a portion of the device body 2 corresponding to a lens of a mirror, and a pair of devices is provided on both sides of the device body 2. It is a spectacle type with the handle 4 attached. Then, the earphone 5L,
A cord 14a which is equipped with 5R and serves both as a control and a power supply is taken out from an appropriate portion of the apparatus main body 2.

The black-and-white liquid crystal panel 3 provided on the front side of the apparatus main body 2 is a so-called shield for the outside world, and is capable of passing light from the outside world in stages from transmission to shielding. The shielding state is automatically changed to the see-through state, that is, the open state by the adjusting means and external factors described later.

Earphones 5L and 5R attached to the handle 4
Although the sound can be heard by listening to the ear, a switching means may be provided as appropriate so that the sound of the outside world can be heard automatically in an emergency due to an external factor.

A remote controller 7 is provided at the tip of the cord 14a taken out from one end of the apparatus main body 2, and a device such as a video tape recorder (hereinafter referred to as VTR) is provided at the tip of the cord 14b taken out from the remote controller 7. It is provided with a connection terminal 15 for connecting with.

The remote control unit 7 has an emergency button 8 on the operation surface,
The transparency adjustment button 9 and the VTR control buttons 10 and 11 are maintained, the side surface is provided with a voice volume knob 12, and the bottom surface is provided with a hook 13 for temporarily fixing it at an appropriate position.

As shown in FIG. 2, a back panel 16 is attached to the back side of the apparatus main body 2 so as to surround a frame 20a to which an eyepiece lens 20 of an image section described later is attached. The back panel 16 is provided with a viewing window 17 through which the outside world can be seen through while seeing an image. Therefore,
The user can, for example, enjoy a video image and at the same time view window 17
The outside world can be seen through the black and white liquid crystal panel 3 on the front side.

As shown in FIG. 3, an image section 18 is housed inside the apparatus main body 2. This video section 18
A backlight 19 for liquid crystal images, two liquid crystal panels corresponding to the left and right eyes, and an optical mechanism are built in, and the image can be directly seen through the eyepiece lens 20.

An image display circuit 21 including a printed circuit board on which a large number of electronic parts for controlling a liquid crystal panel, an optical mechanism and the like are mounted is disposed above the image section 18, and this image display circuit is provided. The board of 21 is provided with a vertical impact sensor 22 for detecting when the neck is strongly noded up and down, and a left and right impact sensor 23 for detecting when the neck is strongly shaken left and right, and these sensors and electric The connector 24a is connected to each other and supplies signals and power to the black and white liquid crystal panel 3 at appropriate positions on the left and right. These connectors 24a are connected to the connectors 24b taken out from the black and white liquid crystal panel 3 of the apparatus body 2.

As shown in FIG. 4, the vertical impact sensor 22 includes three conductive upper plate portions 26 whose one ends are fixed to the holder 25 at appropriate intervals, a central plate portion 27, and a lower plate portion 28. The sphere 29, which is a metal weight, is attached to the apex of the central plate 27, and the ends of each plate supported by the holder 25 are projected as connection terminals 30, 31, 32. is there. When the terminal 31 is commonly used, the terminal 30 is a signal terminal for detecting a downward impact and the terminal 32 is a signal terminal for detecting an upward impact.

With such an arrangement, the central plate portion 27 is normally stopped at a position substantially in the center between the upper plate portion 26 and the lower plate portion 28, but when a strong movement or impact is received, the sphere portion 29 is inertial. The electric current flows through the contact with the upper plate portion 26 or the lower plate portion 28 to detect an upward or downward impact.
The left / right impact sensor 23 has the same principle as that of the up / down impact sensor 22 and only the mounting direction is different, and therefore detailed description thereof will be omitted.

The upper and lower and left and right impact sensors 2 as described above.
Reference numerals 2 and 23 can be referred to as so-called impression sensors, and an image display device provided with this impression sensor is used by being worn on the face like normal glasses, as shown in FIG.
The image 18a of the liquid crystal panel is watched while being totally or partially shielded from the outside world, and the sound is enjoyed by listening to the sound through the earphones 5L and 5R.

In such a situation of use, when the user shakes his / her head strongly or an impact is applied from the outside, the impact is detected and the black and white liquid crystal panel 3 is in a see-through state, that is, immediately after being opened. You can see the outside world. The transparency that the external world can see can be appropriately changed by the remote controller 7.

Next, the video display circuit 21 on the circuit board
Will be described with reference to the block diagram shown in FIG. The video display circuit 21 includes an audio amplifier 33 that supplies a sound source to the earphones 5L and 5R, an audio amplifier power supply 34 that supplies power to the audio amplifier 33, a backlight 35 that serves as a light source of color liquid crystal, and the backlight. A backlight power source 36 for ensuring a stable light source for 35, color liquid crystal panels 37L and 37R for displaying images, and RGB signals by performing signal processing on the color liquid crystal panels 37L and 37R from image signals obtained from an external device. R, G, and B process circuits, a controller circuit for sending RGB signals to the color liquid crystal panels 37L, 37R, and a color liquid crystal panel 37L,
Color liquid crystal control circuit 38 including a driver circuit for controlling the X and Y drives for displaying images on 37R
And a black and white liquid crystal panel 3L provided on the front side of the apparatus main body 2,
3R, a black and white liquid crystal panel 3L and 3R, a black and white liquid crystal control circuit 39 for performing stepwise control from transmission to shielding of light from the outside world, and a black and white liquid crystal panel 3 by impact detection.
The controller circuit 40 is configured to change the see-through state of L and 3R and control the state of audio and video to be stopped or close to that state.

Various signals and power supplies to the video display circuit 21 having the above-mentioned configuration are supplied from the connection terminal 15 for connecting to an external electronic device such as a VTR via the remote control unit 7. That is, the connection terminal 15 includes an audio signal terminal 15a, a power supply terminal 15b, a video signal terminal 15c, and a VTR control signal terminal 15d.

The audio signal from the audio signal terminal 15a can be adjusted in volume appropriately by the volume knob 12 provided on the remote controller 7, and is amplified by the audio amplifier 33 and sent to the earphones 5L, 5R. Then, if the controller circuit 40 detects a shock, it is switched to the input of external sound,
Alternatively, the transmission of the audio signal from the audio signal terminal 15a is stopped.

The power source from the power terminal 15b is the earphone 5
The power supply 34 for the amplifier of the audio amplifier 33, the power supply 36 for the backlight, the color liquid crystal control circuit 38, the black and white liquid crystal control circuit 39, and the controller circuit 40 for detecting the impact are supplied.

The video signal from the video signal terminal 15c is input to the color liquid crystal control circuit 38 via the remote controller 7,
The video is stopped or stopped under the control of the controller circuit 40 similarly to the audio signal.

VTR to VTR control signal terminal 15d
The TR control signal is V
The color liquid crystal panel 3 is generated by sending signals from the TR control buttons 10 and 11 such as reproduction, stop and fast forward to an external device and inputting them to the controller circuit 40.
Play and stop video and audio from 7L and 37R.

Next, an emergency button 8 provided on the remote control unit 7
The function of will be described. The emergency button 8 is a button used when it is desired to see the outside world. That is, when the emergency button 8 is pressed, the emergency signal is sent to the controller circuit 40.
Is input to the external device such as a VTR to be temporarily stopped, and the power supply 34 for the audio amplifier of the earphones 5L and 5R is turned off so that the sounds from the earphones 5L and 5R are not heard. The backlight power source 36 is turned off, the backlight 35 is turned off, and the images from the color liquid crystal panels 37L and 37R cannot be seen.

At the same time, by instructing the black-and-white liquid crystal control circuit 38 to maximize the see-through state (open state), the shielding portions, that is, the black-and-white liquid crystal panels 3L and 3R become transparent (open), and from there. You can see the outside world. Although the sound amplifier power supply 34 is turned off so that the earphone 5 does not hear the sound, the sound from the outside world is input instead of turning off the sound amplifier power supply 34 so that the earphones 5L and 5R can hear the sound. Is also good.

As described above, the reproduction is temporarily stopped during the reproduction by the external device such as the VTR, and the original state is restored by pressing the emergency button 8 again.

By the way, when the impact sensor, that is, the vertical impact sensor 22 and the horizontal impact sensor 23 detects some impact due to sudden shaking of the head or external factors, the controller circuit 40 pushes the emergency button 8 described above. You can see the outside world quickly by performing the same operation as at time.
Even in this case, pressing the emergency button 8 attached to the remote controller 7 restores the original state.

Further, the transmittance of the light from the outside of the black and white liquid crystal panels 3L and 3R forming the shield can be changed by the transmittance adjusting button 9 of the remote controller 7. That is, if the user wants to concentrate on the image without seeing the outside world, the dark button 9a should be kept pressed, and conversely, if the outside world should be seen a little, the bright button 9b should be pressed.

Next, the second embodiment shown in FIGS. 7 to 9 will be described. The image display device of the second embodiment is a mechanism that can detect an impact or the like by a mechanical operation to see through the outside world, and a head mounting portion 43 to be mounted on the device body 2 and the face.
It has a structure that can be easily opened and closed by separating and.

That is, as shown in FIG. 7, the handle 4 is attached to the head mounting portion 43, and the earphone 5 is inserted from a part of the handle 4.
The structure is provided with a part of a cord 14a for guiding L and 5R and connecting to an external device such as a VTR, and the device body 2 and the head mounting portion 43 are openably and closably connected using a plurality of hinges 44. The device main body 2 is always urged by the spring provided in the hinge 44 in the direction of jumping up, that is, the opening direction. During normal use, the apparatus body 2 is closed with respect to the head mounting portion 43,
The structure is such that a hooking mechanism 45 that hooks a hook 49 on a projection 46 provided on the side of the hook controls the jumping up.

As shown in FIG. 8, the hooking mechanism 45 has a protrusion 46 having a circular shape on one side of the main body 2 of the apparatus and a side face of the head mounting portion 43 at a position corresponding to the protrusion 46. This is a structure including a stop drive unit 47.

The latch drive section 47 is provided with a bearing member 48b rotatably supported by a shaft 48a.
8b is provided with a hook 49 that is engaged with the protrusion 46 in a state of being implanted, and the free end of the hook 49 is formed in a hook shape.
Further, a spring hook 50 is formed on the bearing member 48b at a position facing the hook 49, and an impact rod having a metal ball 51 at a free end is formed on an upper side surface between the hook 49 and the spring hook 50. 52 is planted and fixed.

A coil spring 5 is attached to the spring hook 50.
3, one end of the coil spring 53 is hooked and the other end of the coil spring 53 is hooked on the spring stopper 54 so that the latch drive unit 47 is always in a tensioned state to maintain the latched state.

Then, for example, if the head is shaken up and down, the apparatus main body 2 and the head mounting portion 43 are shaken up and down together with the head, but the metal ball 51 of the latch drive portion 47 is delayed or overshooted due to the moment of inertia. Caused by the hook 49
Is disengaged from the hooking surface 46a of the projection 46, and the apparatus main body 2 is springed up by the biasing force of the spring provided on the hinge 44, as shown in FIG.

Even when the head is shaken left and right, the metal ball 5
The moment of inertia of 1 causes the hook 4 to move from the hooking surface 46a of the protrusion 46 of the apparatus main body 2 to the hook 4 in the same manner as the vertical movement.
9 is disengaged, and the apparatus main body 2 jumps up and opens.

When the apparatus main body 2 is returned to the original position from the flipped up position, the apparatus main body 2 is simply pushed down in the closing direction, and the tip end side of the hook 49 slides on the return surface 46b of the projection 46 and the hooking surface 46a. Since it will come back to and hang on, it can be restored with a simple operation.

Further, the third embodiment shown in FIGS. 10 to 14 will be described. In the third embodiment, the black and white liquid crystal panel 3 which is a shielding unit when the ambient sound is detected above a certain value.
It is a structure that allows L and 3R to be automatically opened for transparent viewing.

That is, as shown in FIG. 10, the structure is such that the microphones 6L and 6R, which are sound sensors, are attached to both sides of the main body 2 of the apparatus, and other structures and the configuration of the remote controller are the same as those of the first embodiment.
The details are omitted because they are the same as those described in FIG. 1 of the embodiment.

As shown in FIG. 11, the video display circuit 21a of the video display device 1 to which a microphone as a sound sensor is attached has microphones 6L and 6R and a microphone amplifier 32 for receiving signals from the microphones 6L and 6R. The sound amplified by the microphone amplifier 32 is input to the audio amplifier 33 and the controller 40, respectively. The other construction is the same as the video display circuit 2 of FIG. 6 described in the first embodiment.
Since it is substantially the same as 1, the same reference numerals are given and the details thereof are omitted.

When the controller 40 detects the sound from the microphones 6L and 6R which are sound sensors, the black and white liquid crystal panels 37L and 37R are controlled to the transparent state (open state) according to the detected sound level.

The external sound input through the microphones 6L and 6R is amplified by the microphone amplifier 32, and the amplified audio signal is input into the controller circuit 40 and is within a predetermined level value range set appropriately. Is constantly being measured. This constant level value is, for example, a value that determines whether the volume exceeds a certain level, the volume has changed more than a certain value within a certain period of time, or whether a sound other than a certain frequency has a certain level or more. Is.

The above case is an emergency case and the first
The same function as when the emergency button of the remote control unit 7 described in the embodiment is pressed works. That is, the black and white liquid crystal panels 37L, 37
While maximizing the transmission state of R, earphones 5L, 5R
Sound is stopped, and images from the color liquid crystal panels 37L and 37R are stopped.

In the above case, for example, a sudden noise is made in a place with a quiet atmosphere, and as shown in FIGS. 10 to 12, the black and white liquid crystal panels 3L and 3R are quickly and fully viewed ( After a certain period of time, it is automatically closed.

In the above case, for example, when the passenger is boarding an airplane, the sound of the engine is taken into consideration in advance and the microphone 6 is used.
The sound from L and 6R is detected, and the above-described function works by detecting the sound from the speaker in the airplane or the sound guided in the case of the in-flight service of the stewardess, for example.

When any of the above-mentioned conditions (1) to (3) occurs, the shield can be quickly opened to allow a see-through state and the earphones 5L and 5R can also be heard from the outside world so that a quick response can be made. Becomes

[0049]

As described above, the image display device of the present invention is provided with a shield from the outside in a portion other than the liquid crystal panel and is equipped with a predetermined sensor so that a sudden movement or a shock caused by an external factor may occur. Since the shielding part is opened instantly by the sound so that the outside world can be seen, it is said that even in the case of an eyeglass type image display device, it is possible to immediately see through the outside world in case of an abnormality in the outside world and take prompt action. Produce the effect.

Also, the black and white liquid crystal panel is used as the shielding part, and the transmittance of light is adjusted so that the outside world can be seen through from the outer periphery of the image. It also has the excellent effect of being able to see the outside world if necessary.

Furthermore, when the apparatus main body and the head mounting portion to be mounted on the face are separated and the apparatus main body is urged in the opening direction to be openably and closably connected, a sudden movement of the neck or an impact is detected. Moreover, since the main body of the apparatus jumps up to open the outside world, it is possible to immediately see the state of the outside world, which is an excellent effect.

Further, the sound of the earphone is stopped at the same time when the shield is opened, and the external sound can be heard through the earphone, which is an excellent effect that the change of the external environment can be promptly dealt with.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire image display device according to a first exemplary embodiment of the present invention.

FIG. 2 is a perspective view of the image display device of the embodiment as seen from the back side.

FIG. 3 is an exploded perspective view of the image display device of the embodiment.

FIG. 4 is an enlarged perspective view showing an impact sensor of the same embodiment.

FIG. 5 is a perspective view showing a state in which the image display device of the embodiment is attached to the head.

FIG. 6 is a block diagram of a video display circuit in the video display device of the embodiment.

FIG. 7 is a perspective view showing a second embodiment of the image display device according to the present invention.

FIG. 8 is an enlarged perspective view of a main part showing an example of an impact sensor used in the embodiment.

FIG. 9 is a perspective view showing a state where the main body of the image display apparatus of the embodiment is flipped up.

FIG. 10 is a perspective view showing the entire image display device of a third embodiment according to the present invention.

FIG. 11 is a block diagram of a video display circuit in the video display device of the embodiment.

FIG. 12 is an explanatory diagram showing a state in which the image display device of the embodiment is in a see-through state when a sound is detected.

FIG. 13 is an explanatory view showing a process in which the image display device of the embodiment is used, and halfway from a see-through state to a shielded state after a lapse of a certain time from when sound is detected.

FIG. 14 is an explanatory diagram showing the return from the see-through state to the shielding state after a certain period of time has elapsed after the sound was detected by using the video display device of the example.

[Explanation of symbols]

 1 Video display device 2 Device body 3L, 3R Black and white liquid crystal panel 4 Pattern 5L, 5R Earphone 6L, 6R Microphone (sound sensor) 7 Remote control unit 8 Emergency button 9 Transparency adjustment button 10, 11 VTR control button 12 Volume knob 13 Hook 14a, 14b cord 15 connection terminal 15a audio signal terminal 15b power supply terminal 15c video signal terminal 15d VTR control signal terminal 16 back panel 17 viewing window 18 image part 18a image 19 backlight 20 eyepiece 21, 21a image display circuit 22 vertical impact sensor (Impact sensor) 23 Left and right impact sensor (Impact sensor) 24a, 24b Connector 25 Base portion 26, 27, 28 Conductive plate portion 29 Ball 30, 31 Connection terminal 32 Microphone amplifier 33 Voice amplifier 34 Voice amplifier power supply 35 Backlight 36 Power supply for backlight 37L, 37R Color liquid crystal panel 38 Color liquid crystal control circuit 39 Monochrome liquid crystal control circuit 40 Controller circuit 43 Head mounting portion 44 Hinge 45 Hooking portion 46 Protrusion 46a Hooking surface 46b Return surface 47 Hooking drive mechanism 48a Axis 48b Center part 49 Hook 50 Spring hook 51 Metal sphere 52 Impact rod 53 Spring 54 Spring stop

Claims (5)

[Claims] 1. An image display device configured such that an eyeglass-type device main body including a light source and a liquid crystal panel is mounted on a face so that an image on the liquid crystal panel can be viewed, the portion other than the liquid crystal panel. In addition to providing a shield to the outside world to the outside, a predetermined sensor is provided, and when the sensor senses a sudden movement, an impact, or a predetermined level of sound, the outside is opened so that the outside world can be seen. Video display device. 2. The black-and-white liquid crystal panel as the shielding portion, and the light transmittance of the black-and-white liquid crystal panel is adjusted so that the outside world can be seen through from the outer peripheral portion of the image. Video display device. 3. A device main body and a head mounting portion to be mounted on the face are separated, and the device main body is urged in the opening direction to be openably and closably connected, and a predetermined sensor detects a sudden movement or an impact. The image display device according to claim 1, wherein the outside world is opened by the body of the device jumping up at the time of performing. 4. The image display device according to claim 1, wherein the predetermined sensor is an impact sensor or a sound sensor. 5. The image display device according to claim 1, wherein the sound of the earphone is stopped at the same time when the shield is opened, or the sound can be opened through an external sound and the earphone.