JPH11343079A - Information display device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the crime prevention effect by displaying output signals of a video camera for taking a photograph of the inside of a car on an image display device arranged in the car for a short time, in synchronism with external trigger input. SOLUTION: An information display device for elevators is provided with a video camera 12 arranged in a car 11 to photograph the inside of the car, an image display device 15 which displays photographed signals, etc., of the video camera 12, an image memory 172 for previously accumulating displaying image signals which are to be displayed on the image display device 15, and a display unit 16 provided with a switching means for switching output signals of the video camera 12 and output signals of the image memory 172, etc., to supply the signals to the image display device 15. Further, the switching means 164 has an external trigger input means 176, and when external trigger input is detected in the external trigger input means 176, output of the video camera 12 is supplied to the image display device 15 for a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display device for an elevator, and more particularly to a security device for displaying an image signal of a video camera for picking up an image in a car for a short time on an image display device arranged in the car. The present invention relates to an elevator information display device with improved effects.

[0002]

2. Description of the Related Art An image of an elevator car is taken by a video camera, and this image signal is displayed on a monitor TV arranged in a management room. An elevator car monitoring device provided with a changeover switch for selectively switching and displaying a video signal from an external video signal generator is known as disclosed in Japanese Patent Application Laid-Open No. 3-31177.

FIG. 6 is a diagram showing a conventional elevator car monitoring apparatus disclosed in the publication.

In the figure, reference numeral 1 denotes an elevator car,
Reference numeral 2 denotes a video camera disposed in the elevator car to capture an image of the elevator car, 3 denotes a monitor TV disposed in a management room, 4 denotes a changeover switch, 5 denotes room information in the building and general TV programs. Is a video signal generator for generating the above, and 6 is an in-car monitor television provided in the elevator car.

[0005] In the elevator car monitoring apparatus configured as described above, by operating the changeover switch 4, the image from the video camera 2 is displayed on the monitor television 6 in the car and the video signal generating apparatus is operated. 5 can also be displayed. Therefore, when it is relatively safe in the daytime, the video signal generator transmits the room information and general TV programs in the building and displays them on the monitor TV in the car, and at night the images in the car are displayed, thereby preventing crime. The effect can be obtained.

[0006]

A crime in a building or condominium often occurs at a time when the number of users is small, such as at night. However, elevators are locked when doors close, so crime and mischief occur day and night.

Therefore, as in the elevator car monitoring apparatus of the prior art, assuming that the daytime is a relatively safe time zone and displaying the image signals in the car only at nighttime, the security effect is sufficient. Can not be obtained. In order to obtain a sufficient security effect, it is necessary to project the image signal in the car day and night. However, it was also found that even if the projection time is short, the prevention effect can be sufficiently obtained, and that if the projection is performed for a long time, passengers may feel uncomfortable.

The present invention has been made in view of the above-mentioned problems of the prior art, and outputs an output signal of a video camera for capturing an image of an inside of an elevator car in synchronism with an external trigger input to the elevator car for a short time. An object of the present invention is to provide an elevator information display device which displays on an image display device provided to enhance a security effect.

[0009]

The present invention employs the following means in order to solve the above-mentioned problems.

A video camera arranged in an elevator car and taking an image of the elevator car, an image display device for displaying an image signal of the video camera and the like, a teletext receiver for receiving and decoding teletext; An image memory for storing in advance an image signal for display to be displayed on the image display device, and a display memory for storing a display pattern signal,
A message unit for selecting and outputting an output signal of the teletext receiver or an accumulated image signal accumulated in the image memory, and switching between an output signal of the video camera and an output signal of the message unit, to the image display device. A display unit having a switching means for supplying,
And the switching means has an external trigger input means, when detecting an external trigger input to the external trigger input means,
An information display device for an elevator, wherein an output of the video camera is supplied to the image display device for a short time.

In the elevator information display device, the display unit may include a modulator for modulating an output signal of the switching means, transmitting the modulator output signal to an image display device in the car, and A separator that separates and receives the imaging signal of the video camera in the
A character generator that inserts character information into the separated image pickup signal and supplies it to the modulator, and multiplexes the modulator output signal and the image pickup signal of the video camera between the car and the display unit. It is characterized by transmission.

Further, in the elevator information display device, the character information inserted into the separated image signal is information indicating that the video camera is operating.

Further, in the elevator information display apparatus, the message unit includes a display memory for storing an order and a display period for displaying the image signal and the output signal of the teletext receiver stored in the image memory. The stored signal and the output signal of the character signal receiver are supplied to a display unit in accordance with the order and display period stored in the memory.

[0014] In the elevator information display device, the image display device is provided in an elevator car or at an elevator platform.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a diagram showing an elevator information display device according to the present embodiment, and FIG. 2 is a diagram showing an example of an image pickup signal of a video camera and an image displayed on an image display device.

In these figures, reference numeral 1 denotes an elevator elevating section, 2 denotes an elevator platform, 3 denotes an elevator machine room, and 4 denotes a remote elevator management office.

(A) is an image taken by a video camera,
(B), (C), (D) and (E) show examples of display images on the image display device, and (E) shows an example of a teletext image.

Reference numeral 11 denotes an elevator car, and 12 denotes a video camera arranged in the elevator car and picking up an image of the elevator car.
It is shown in (A). 13 guides an image signal captured by the video camera 12 to a display unit 16 described below,
An RF separator that separates an RF signal (high-frequency modulation signal) output from the display unit 16 from an image signal captured by the video camera and supplies the signal to a demodulator 14 described later. 14
Is a demodulator for demodulating an RF signal, and 15 is an image display device arranged in the elevator car, which displays an image signal demodulated by the demodulator 14.

It is preferable that the power of the video camera is always on so that the video camera 12 can be operated at all times, while the power of the image display device provided in the elevator is provided by the lighting in the elevator. It is desirable to turn on and off at the same time as the power supply.

A display unit 16 supplies a display image to an image display device 15 disposed in an elevator car.
7 is a message unit for supplying a message to be displayed on the image display device 15, 18 is a teletext receiver, 1
Reference numeral 9 denotes a modem, and reference numeral 20 denotes a personal computer connected to the message unit 17 via the modem 19. The personal computer 20 creates a display image and a display schedule to be displayed on the image display device, stores the created display image in the image memory, and stores the created display schedule in the display memory. Reference numeral 21 denotes an elevator control panel, which supplies a control operation signal to the display unit when the elevator is brought into a control operation state due to an earthquake, a fire, a power failure, or the like. 2
2 is a time-lapse VTR (VT for recording images intermittently)
In R), the image of the video camera 12 is recorded. 23
Reference numeral 24 denotes an image display device disposed at the elevator platform, and reference numeral 24 denotes a moving cable such as a coaxial cable connecting the display unit in the elevator machine room and the elevator car 11.

In the display unit 16, 161 is R
RF separator 162 having the same configuration as F separator 13
Is a character generator, 163 is a modulator, 164 is a switcher for switching between a character generator output signal and an output signal of a message unit 17 described later, and 165 is a microcomputer. If it is in the state, the character of "security camera is operating", and if it is in the control operation state, the character of "earthquake" or "power failure" is generated.

The microcomputer 165 monitors the control operation signal of the elevator, and switches the switcher 164 to the terminal (b) when detecting the control operation state. FIG. 2B shows an example of an image displayed on the image display device when the control operation state is set.

In the message unit 17, 1
71 is a main memory of the microcomputer 174, 1
An image memory 72 stores image information such as a guide information screen and an advertisement screen in the hall. FIG. 2D shows an example of the image information stored in the image memory. 173 is a display memory,
174 is a microcomputer, 175 is an interface, 176 is a trigger signal generating means, and 177 is a switcher that selects an image signal stored in the image memory 172 or a decoded text broadcast image signal of a teletext receiver and supplies it to the display unit 16. . The switcher 177 transfers the image signal from the image memory to the display memory in response to a command from the microcomputer 174, and temporarily selects the image signal or the output signal of the teletext receiver which is stored in the display memory and supplies it to the display unit 16. FIG. 2 shows an example of the teletext image.
(E) is shown.

FIG. 3 is a diagram showing the setting of the image memory and the setting of the display pattern, and FIG.
FIG. 3 is a diagram showing the image numbers of a plurality of stored images stored in the storage device and their contents.

In the figure, the stored image stores image information for 16 screens in association with the image number of the image and the image number. In the image numbers 1 to 4, "bulletin 1" to "bulletin 4" which are bulletin board information such as guidance information images which substitute for a bulletin board are stored, and in the image numbers 5 to 16, "advertisement 1" to "advertisement 1" to "advertisement information" are stored. "Advertisement 12" is accumulated.

FIG. 3B is a diagram showing an example of a display pattern set in the display memory.

The display order 1 of this display pattern is the image of "post 1" of image number 1, and the display time of this image is 5 seconds. The next display order 2 is “posting” of image number 3
3 ", and the image display time is 5 seconds. The next display order 3 is the image of “advertisement 2” with image number 6,
This image display time is 7 seconds. The next display order 4 is the image of “advertisement 1” of image number 5, and the image display time is 7 seconds. The next display order 5 is an external input, and a teletext screen is set as the external input for 23 seconds. The combination, display order, and display time of each display image set as the display pattern can be arbitrarily set, and the combination, display order, and display time of the display images can be arbitrarily set by operating the personal computer 20. Thus, a plurality of display patterns can be obtained. Total display time is 60
Preferably, it is set within seconds. Then, the plurality of display patterns obtained in this manner are display patterns 1 to 10.
Can be registered in the display memory.

FIG. 4 is a diagram for explaining the display schedule, and FIG. 4A is a diagram showing the setting of the display schedule.

In the figure, "display pattern 1" to "display pattern 10" are the above-mentioned display patterns 1 to 1 respectively.
0 and “standard display” is a display pattern that is repeatedly displayed at all times, for example, the display pattern set in FIG. 3B. "Event display" is a specified time of day (for example, event display (1) is from 8:00 to 9:30, event display (2) is from 12:00 to 14
Until hour, event display (4) is from 17:00 to 19:00)
This is a display pattern that only displays. In the figure, the display schedule is display pattern 1, display pattern 3
4 and a display pattern 10.

FIG. 4B is a time chart showing the display schedule.

In the figure, the event displays (1), (2) and (4) are displayed only in the time zone set for the event display, and the period excluding each event display (1), (2) and (4) Repeats the display according to the standard display pattern continuously.

FIG. 5 is a timing chart showing switching timings of the switchers 177 and 164 for switching and displaying a plurality of stored images, the teletext image, and the image pickup signal of the video camera 12.

In the figure, (a) is an image pickup signal of a video camera disposed in a car, (b) is a timing chart in which the plurality of stored images and the teletext image are arranged in display order, and (c) is a timing chart. This is a trigger signal generated by the microcomputer 174, and the thick lines in the figure represent display images displayed on the image display devices 15 and 23.

Next, the operation of the elevator information display device having the above configuration will be described.

An image signal from the video camera 12 for imaging the inside of the elevator car is transmitted to the RF separator 161 in the display unit 16 via the RF separator 13 and the moving cable 24. The RF separator 161 separates the image signal transmitted through the moving cable from the RF signal output from the modulator 163, and supplies the separated image signal to the time-lapse VTR 22 and the character generator 162. The time lapse VTR 22 intermittently and continuously records the image signal, and saves the record.

The character generator 162 generates a character, for example, the character "operation of the security camera" according to a command from the microcomputer 165, and supplies a character superimposed image signal obtained by superimposing the character signal on the image pickup signal to the switcher 164. When the switch of the switcher 164 is switched to the terminal (b) side to select the character generator, the character superimposition signal is supplied to the modulator 163, and the modulator 163 converts this signal into R signal.
The signal is modulated into an F signal and supplied to the RF separator 161 to be RF
The separator 161 outputs this RF signal only to the moving cable 24. RF transmitted via moving cable 24
The signal is input to a demodulator 14 via an RF separator 13, and the demodulator 14 demodulates the RF signal and displays the character superimposed signal on an image display device 15.

Here, paying attention to the signal transmitted through the moving cable, the image pickup signal of the video camera is transmitted through the RF separator 13 and the cable conductor 24 to the display unit 16.
The RF signal is transmitted to the RF separator 161 via the modulator 163 and then modulated to a high-frequency signal via the modulator 163, and then transmitted to the RF separator 13 disposed in the car via the RF separator 161 and the moving cable 24. Thus, in the present embodiment, bidirectional communication can be performed using only one cable conductor. Next, the switcher 177 is switched to the terminal (c) by the microcomputer 174 to select the display memory, and the switcher 164 is switched to the terminal (a) by the microcomputer 165 to select the message unit. Reference numeral 174 sequentially reads out the stored image stored in the image memory 172 from the image memory in accordance with the setting contents set in the display memory 173, sequentially stores the stored image in the display memory 173, and sequentially reads out the stored image.

If the contents and the display time of the set image signal are, for example, 5 seconds for “post 1”, 5 seconds for “post 2”, and 10 seconds for “post 3”, the microcomputer 174 The stored images are read out of the image memory in order and temporarily stored in the display memory, and the image signals stored in the display memory are read out again from the display memory and supplied to the terminal (c) of the switcher 177. As described above, the display screen can be quickly switched by temporarily storing the display screen in the display memory.

The image signal supplied to the terminal (c) of the switcher 177 is passed through the terminal (a) of the switcher 164, and one of the signals is modulated by the modulator 163 into an RF signal. Displayed on the device. The others are displayed on the video display device 23 provided at the elevator platform.

Next, the microcomputer 174 outputs the external trigger signal TG1 when the display of the image signal "post 3" set by the display memory is completed, and switches the switcher 177 to the terminal (d) side. By this switching, the message unit supplies the teletext screen to the display unit. The microcomputer 165 that has received the external trigger signal TG1 switches the switcher 164 to the terminal (b) side in synchronization with this signal.

Therefore, the display unit 16 displays on the display circuit an image signal obtained from the character generator, that is, a signal in which the character signal generated by the character generator is superimposed on the video image pickup signal in the car. Then, after the display time of the character superimposed image signal in which the character signal generated by the character generator is superimposed on the video image pickup signal in the car, for example, 3 seconds, the microcomputer 165 switches the switcher 1.
64 is switched to the terminal (a) side again. The image signal displayed by this switching is switched from the character superimposition signal to a teletext image.

Next, the microcomputer 174 switches the switcher 177 again to the terminal (c) when the display time of the teletext image, for example, 23 seconds, has elapsed.
Thereby, the display circuit is switched to the display memory 173 side.

Next, the microcomputer 174 sequentially reads the stored images stored in the image memory 172 into the display memory 173 in accordance with the settings set in the display memory 173. Assuming that the contents and display time of the set image signal are "advertisement 1" for 7 seconds and "advertisement 2" for 7 seconds, the image signals are temporarily read from the image memory 172 to the display memory in this order. . The image signal read out again from the display memory is supplied to the display unit 16 via the terminal (c) of the switcher 177 and the terminal (a) of the switcher 164. As described above, the image signal supplied to the display unit is displayed on the video display devices 15 and 23.

The microcomputer 165 constantly monitors the elevator control operation signal supplied by the elevator control panel 21, and when the elevator control operation signal is input,
The character generation device 162 is instructed to generate a character representing control operation information such as "earthquake", and at the same time, the switcher 164 is switched to the terminal (b) side. Thus, the control operation information can be displayed on the image display device.

The microcomputer 165 has an external trigger signal TG supplied from the microcomputer 174.
1 is monitored, and when an external trigger signal is input, the switcher 164 is switched to the terminal (b) side in synchronization with this signal, but another arbitrary signal, such as a timer, is used as the external trigger signal. A trigger signal at a predetermined interval, an elevator door open signal, and the like can be used.

[0047]

As described above, according to the present invention,
By displaying an image signal of a video camera for imaging the inside of the car on an image display device arranged in the car for a short period of time, it is possible to provide an elevator information display device with an improved security effect.

Further, in addition to the image pickup signal of the video camera for picking up an image of the inside of the car, the output signal of the teletext receiver is displayed for a short time on the image display device arranged in the car, thereby providing the image display device. Can be provided effectively.

The display unit in the elevator machine room and the elevator car 11 are connected by a moving cable such as a coaxial cable, and an image signal of a video camera is transmitted from the car to the display unit in the elevator machine room using the moving cable. By transmitting an RF signal modulated by a modulator from the display unit to the inside of the elevator car, the signal can be efficiently transmitted by one transmission line.

[Brief description of the drawings]

FIG. 1 is a diagram showing an elevator information display device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of an image pickup signal of a video camera and an image displayed on an image display device according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating setting of an image memory and a display pattern according to the embodiment of the present invention.

FIG. 4 is a diagram illustrating a display schedule according to the embodiment of the present invention.

FIG. 5 is a diagram illustrating switching timing of a switcher according to the embodiment of the present invention.

FIG. 6 is a diagram showing a conventional elevator car monitoring device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Elevator car 12 Video camera 13,161 RF separator 14 Demodulator 15,23 Image display device 16 Display unit 162 Character generator 163 Modulator 164,177 Switcher 165,174 Microcomputer 17 Message unit 171 Main memory 172 Image memory 173 Display memory 175 Interface 176 Trigger signal generation 18 Teletext receiver 19 Modem 20 Microcomputer 21 Elevator control panel 22 VTR

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H04N 7/18 H04N 7/18 D (72) Inventor Yoshihiro Ohira 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building Systems, Ltd. (72) Inventor Chie Yashima 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Co., Ltd. Within Hitachi Building System Co., Ltd. (72) Inventor Hiroshi Goko 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Co., Ltd. Hitachi Building System Co., Ltd.

Claims (5)

[Claims] 1. A video camera arranged in an elevator car and taking an image of the elevator car, an image display device displaying an image signal and the like of the video camera, and a text broadcast receiving and decoding a text broadcast. , An image memory for previously storing a display image signal to be displayed on the image display device, and a display memory for storing a display pattern signal, wherein the output signal of the teletext receiver or the stored image stored in the image memory A message unit that selects and outputs a signal; and a display unit that includes a switching unit that switches between the output signal of the video camera and the output signal of the message unit and supplies the output signal to the image display device. When the external trigger input means detects an external trigger input, the video camera An information display device for an elevator, characterized in that the output signal is supplied to the image display device for a short period of time. 2. The car according to claim 1, wherein the display unit is a modulator that modulates an output signal of the switching means, and transmits the modulator output signal to an image display device in the car. And a character generator that inserts character information into the separated image pickup signal and supplies the signal to the modulator, wherein the modulator output signal and the image pickup of the video camera are provided. An information display device for an elevator, wherein a signal is multiplexed and transmitted between the car and the display unit. 3. The elevator information display device according to claim 2, wherein the character information inserted into the separated image signal is information indicating that the video camera is operating. 4. The display unit according to claim 1, wherein the message unit includes a display memory for storing an order and a display period for displaying the image signal and the output signal of the teletext receiver stored in the image memory. An information display device for an elevator, wherein the stored signal and the output signal of the character signal receiver are supplied to a display unit in accordance with the order and the display period stored in the elevator. 5. The elevator information display device according to claim 1, wherein the image display device is disposed in an elevator car or at an elevator platform.