JP3426966B2 - Photographing device in elevator car - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator car image pickup device having a television camera and a monitor device suitable for monitoring the inside of a car.

[0002]

2. Description of the Related Art As a device for monitoring the inside of an elevator car, a car monitoring device as disclosed in Japanese Patent Laid-Open No. 3-31177 has been known. Figure 4
This is for explaining such a conventional technique, in which a television camera 2 is installed in a car 1 of an elevator, and an image of the car 1 captured by the TV camera 2 is displayed in a building management room or the like. Monitor device 3 installed and the car 1
It is designed to be displayed on the monitor device 6 installed inside, and by making the passengers in the car 1 aware that it is an elevator equipped with a monitoring system, it is possible to detect a crime in the car 1 in a closed room. The deterrent effect is enhanced. Also,
In such a conventional technique, when the changeover switch 4 is operated, the image from the video signal generator 5 such as a video player can be transmitted to the monitor device 6 instead of the image in the car 1. For example, in a relatively safe time zone such as daytime, the monitor device 6 can be used to provide various kinds of information to passengers.

[0003]

In the above-mentioned prior art, passengers are always required to display the image in the car taken by the television camera 2 on the monitor device 6 in the car 1 continuously for a long time. Although they had to be aware that they were being monitored, they had a crime-deterrent effect, but there was a problem in that many passengers were likely to feel uncomfortable. Further, in this conventional technique, when a suspicious person who has entered from the outside gets into the car 1 and notices the television camera 2 and the monitor device 6, it is recognized that the car 1 is being monitored. From the viewpoint of crime prevention effect, it seems more effective to let the driver know that the inside of the car 1 is being monitored before boarding the car 1. Further, in order to make a clear impression that the inside of the car 1 is being monitored, it is not enough to simply display the image inside the car, and a method that allows passengers to recognize that the car 1 is being monitored is desired. In addition, in the above-described conventional technology, a signal line for transmitting a video signal from the television camera 2 in the car 1 to the monitor device 3 such as an administrator room, and a video signal from the monitor device 3 to the monitor device 6 in the car 1 Is required, and if these two signal lines are added to an existing elevator, there is a problem in that complicated work is forced and cost is increased.

The present invention has been made in view of the above problems of the prior art, and the purpose thereof is to have a high crime deterrent effect in a car, to provide various information to passengers, and more preferably to reduce construction cost. An object of the present invention is to provide an elevator car image capturing device that can be reduced.

[0005]

In order to achieve the above-mentioned object, the present invention provides a television camera for photographing the inside of a car, a video recorder for recording the image in the car photographed by the television camera, and the inside of the car. In an elevator car image capturing device having a monitor device for displaying an image, the monitor device is installed in at least one of a car and a hall on each floor, and a plurality of types of video signals of the television camera are included. comprising an image distribution apparatus for distributing selectively to said monitoring device that image by inputting an image signal, the image distribution apparatus, passengers from the elevator control board
When the trigger signal informing out is not input delivered selectively to the monitor device in the plurality of types time preset image spacing and display order, the Jer
When the trigger signal is input from the beta control panel , the image in the car is preferentially distributed to the monitor device.

[0006] As described above, the image in the car taken by the TV camera and various image information such as text broadcast and bulletin board information (notification) are displayed on the monitor device installed in the car or on each floor. If images are selectively delivered by the image delivery device, passengers recognize that the elevator is equipped with a surveillance system, but the images in the car are not continuously displayed, so the passengers in the car are not displayed. It also eliminates the strain on the passengers and thus can deter crime in the car without causing passenger discomfort. Further, if the monitor device is installed in each floor hall, the passengers can recognize the elevator monitoring system before getting into the car, so that the crime prevention effect can be improved. Then, when a predetermined trigger signal that notifies the passengers entering and leaving is input to the image distribution device, if the image in the car is preferentially distributed to the monitor device, when the passengers in the car are replaced, Since the image in the car is displayed, the crime deterrent effect is further enhanced.

Further, when the image distribution device outputs the character string for crime prevention stored in advance on the image in the car to be distributed to the monitor device, the image in the car is simply displayed. It is possible to clearly impress that the inside of the car is being monitored, as compared with the case of only.

Further, the image distribution device modulates a video signal output to a monitor device installed in a car, and the modulated video signal is input to the image distribution device from the television camera. If the signal line is output by being superposed on the signal line, it is only necessary to add one signal line to the existing elevator, so that the cost can be reduced by saving the signal line and simplifying the construction work.

Further, when the image distribution device receives a trigger signal indicating the occurrence of an emergency such as an earthquake or a fire, distribution of any of the plurality of types of images to the monitor device is interrupted and stored in advance. If an emergency character string is delivered to the monitor device, it is necessary for passengers in the car by using the monitor device in the car when an earthquake or fire occurs. This is preferable because the message can be quickly notified.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an image capturing apparatus in a car according to the present invention will be described below with reference to FIGS. However, FIG. 1 is an explanatory diagram showing the system configuration of this embodiment, FIG. 2 is a flowchart showing the basic operation of this embodiment, and FIG. 3 is recorded in various images and video recorders displayed on the monitor device in this embodiment. It is explanatory drawing which shows the example of the image.

In FIG. 1, reference numeral 7 is an elevator car, 8 is an elevator machine room, and 9 is an elevator hall. The car 7 includes a television camera 10 for photographing the inside of the car 7 and a signal discriminator 11
, A demodulator 12 and a monitor device 13 are installed, and the signal discriminator 11 is connected to the input / output terminal T1 of the image distribution unit 15 installed in the machine room 8 via the moving cable 14 of the elevator. It is connected to the. Further, a video recorder 16 for recording an image in the car, which is an image taken by the TV camera 10, and a monitor device 19 installed in the hall 9 on each floor are provided at the output terminals T2, T3 of the image distribution unit 15, respectively. It is connected. Further, a character broadcasting tuner 17 capable of receiving and outputting a character broadcasting and a message unit 18 capable of storing and outputting a message such as a bulletin board display are connected to the input terminals T4 and T5 of the image distribution unit 15, respectively. ing.
Then, in the image distribution unit 15, a signal discriminator 15a for discriminating a signal from the television camera 10 and a signal to the monitor device 13 and a video signal input via the signal discriminator 15a are superimposed. Character generator 15b that stores various character strings including character strings
And a switcher 15c for selectively connecting to the character generator 15b, the teletext tuner 17, or the message unit 18 to switch signals.
A modulator 15d that modulates a signal from the switcher 15c and supplies it to the signal discriminator 15a, and a microcomputer 15e for controlling the character generator 15b and the switcher 15c are built in. Further, in the microcomputer 15e, display time setting volumes 15f (a), (b), for setting the switching operation time of the switcher 15c,
(C) and a trigger signal input portion 15g to which various trigger signals are input from the outside are provided, and the trigger signal input portion 15g is provided with a contact for a door opening signal provided in the elevator control panel 20. 20a, a contact 20b for control operation during an earthquake, and a contact 20c for control operation during a fire are connected.

More specifically, referring to FIG. 1, an image (image in the car) in the car 7 taken by the television camera 10 is imaged as a video signal via the signal discriminator 11 and the moving cable 14. It is input to the input / output terminal T1 of the distribution unit 15. This video signal is branched into two directions in the image distribution unit 15 via the signal discriminator 15a, one of which is input to the video recorder 16 via the output terminal T2 and recorded, while the other is generated by the character generator. It is input to 15b, the character string "camera monitoring" is superimposed on the image in the car, and then sent to the switcher 15c. The switcher 15c includes a character broadcasting tuner 17 and a message unit 18 in addition to the signal input from the character generator 15b.
Signals from the switcher 15c are selectively output at a predetermined time interval and display order under the control of the microcomputer 15e. The signal selectively output by the switcher 15c is branched in two directions, one of which is input to the monitor device 19 of the hall 9 for display via the output terminal T3, and the other of which is input to the modulator 15d and RF. After being modulated, it is sent to the signal discriminator 15a and output from the input / output terminal T1, and the signal discriminator 1 of the moving cable 14 and the car 7 is output.
1 to the demodulator 12. Since the demodulator 12 demodulates the video signal (modulated signal) modulated by the modulator 15d and outputs the demodulated signal to the monitor device 13, the monitor device in the car 7 is the same as the monitor device 19 in the hall 9. The image in the car is also displayed at 13.

The moving cable 14 is connected to the car 7
The video signal sent from the television camera 10 in the inside and the modulation signal sent from the modulator 15d in the image distribution unit 15 are transmitted in a superimposed manner. These two kinds of signals are signal discriminators. They are distinguished by 11, 15a. In the character generator 15b, not only the character string ("camera monitoring") corresponding to the signal input from the door opening contact 20a to the microcomputer 15e via the trigger signal input unit 15g,
Contact points 20b, 20c for control operation during an earthquake or control operation during a fire
Another string corresponding to the signal from (specifically, an emergency message such as "Earthquake. Please exit when the door opens." Or "Fire. Please exit when the door opens.")
Is also remembered. In addition, the microcomputer 15e
Is the display time setting volume 15f (a), (b),
Character generator 1 according to the setting value of (C)
5b, teletext tuner 17, and message unit 18
Each display duration of is controlled.

Next, the display operation of this embodiment will be described with reference to the flowchart of FIG. Now, in step S1, the microcomputer 15e
The switcher 15c is controlled so as to output the signal from the character generator 15b, and therefore the image distribution unit 15 displays the image in the car 7 (image in the car) taken by the TV camera 10 as "camera monitoring. "
The video signal in which the character string is superimposed is output from the terminals T1 and T3, and the image is displayed on the monitor devices 13 and 19.
Next, in step S2, it is determined whether or not a signal for control operation during an earthquake or control operation during a fire (control operation signal from the contacts 20b, 20c) is input to the image distribution unit 15, and the control operation signal is input. If there is, "YE
The process branches to “S” and proceeds to step S9 to control the character generator 15b so as to output the character string (the emergency message) corresponding to each control operation.
That is, when an earthquake or a fire occurs, the display of the image in the car is interrupted and the character information for promptly evacuating the passenger from the car 7 is displayed on the monitor devices 13 and 19. Then, the process proceeds from step S9 to step S10, and it is determined whether or not the input of the control operation signal from the contacts 20b and 20c is released. If not released, the process returns to step S9. Proceeding to step S1, the image inside the car is overlaid with the character string "camera is being monitored" again and the monitor device 13, 19 is displayed.
Will be displayed in. On the other hand, if it is determined in step S2 that the control operation signal is not input, "N
It branches to "O" and proceeds to step S3, and it is determined whether or not a door open signal (a signal from the contact 20a of the door open signal) is input to the image distribution unit 15. When the door open signal is input, the process proceeds to step S1. When the door open signal is not input, the process proceeds to step S4. Here, since the series of operations performed in steps S2 and S3 are common operations repeated after step S4, steps S2 and S3 are collectively referred to as step X to simplify the description.

In step S4, it is judged whether or not the first predetermined time set by the display time setting volume 15f (a) has elapsed, and if not, the flow branches to "NO". And proceed to step S1 above.
If the predetermined time has passed, the process branches to “YES” and proceeds to step S5. In this step S5, the microcomputer 15e controls the switching of the switcher 15c so that the signal from the teletext tuner 17 is output, so that the teletext is displayed on the monitor devices 13 and 19 instead of the image in the cage so far. Will be done. Then, the operation proceeds from step S5 to the step S6 through the operation of the step X, and in this step S6, it is judged whether or not the second predetermined time set by the display time setting volume 15f (b) has elapsed. Done. That is,
In step S6, it is determined whether or not the time elapsed after displaying the teletext has reached a predetermined time. If not, the process branches to "NO" and proceeds to step S5. Although the teletext display is continued, if the second predetermined time has elapsed, the process branches to "YES" and proceeds to step S7. In this step S7, the microcomputer 15e controls the switching of the switcher 15c so as to output the signal from the message unit 18, so that the monitor devices 13 and 19 are prepared in advance instead of the character broadcast up to that point. Messages such as bulletin board information will be displayed. And step S
After step 7 through step X, the process proceeds to step S8, and in step S8, it is determined whether or not the third predetermined time set by the display time setting volume 15f (c) has elapsed. That is, step S8
Then, it is determined whether or not the time that has elapsed since the message was displayed has reached the predetermined time. If it has not yet elapsed, the process branches to “NO” and proceeds to step S7.
The display of the message is continued as it is, but if the third predetermined time has elapsed, the process branches to "YES" and returns to the step S1, and thereafter, the series of operations described above is repeated.

Incidentally, P1 to P4 in FIG.
3 is an example of various images displayed on P3, and P1 is a case where the character string "camera monitoring" is overlaid on the image in the car 7 taken by the TV camera 10 and displayed. Image example, P2 is an image example when the teletext output from the teletext tuner 17 is displayed, P3
Is an image example when the bulletin board information (notification) output from the message unit 18 is displayed, and P4 is an image example when an emergency message is displayed due to control operation during an earthquake. Also, P5 in FIG. 3 is a video recorder 1
6 is an example of the image in the car recorded in 6, which is the image itself in the car 7 captured by the television camera 10.

As described above, in this embodiment, the monitor device 1 installed in the car 7 and the hall 9 on each floor.
The images in the car captured by the television camera 10 and various video information such as teletext and bulletin board information are selectively delivered to the video cameras 3 and 19 by the image delivery unit 15, so that the passengers have a monitoring system. Although it is recognized that the car is an elevator, the image in the car is not continuously displayed, so there is no tension in the car 7, and therefore the car does not cause discomfort to the passengers. The crimes within 7 can be suppressed. Further, since the monitor device 19 is installed in the hall 9, passengers are to recognize the elevator monitoring system before boarding the car 7.
A high crime deterrent effect can be expected. Further, when a predetermined trigger signal (door open signal) that notifies passengers entering and leaving is input to the image distribution unit 15, the image in the car is preferentially distributed to the monitor devices 13 and 19. Therefore, although information such as teletext is provided, when the passengers in the car 7 are replaced, the image in the car is always displayed, and the crime can be efficiently suppressed. In addition, the character string "camera is being monitored" is overlaid on the image in the basket and the monitor device 13, 1
Since it is displayed on 9, it is possible to make a clear impression that the inside of the car 7 is being monitored, compared to the case where only the image inside the car is displayed, and in that respect also the crime deterrent effect can be obtained. It is rising. However, as the trigger signal, a signal other than the door open signal, for example, an elevator hall call registration signal may be used.

Further, in the present embodiment, when a trigger signal indicating the occurrence of an emergency such as an earthquake or fire is input to the image distribution unit 15, an emergency message for promptly evacuating the passengers from inside the car 7 is displayed. Monitor device 1
Since the information is displayed on Nos. 3 and 19, there is also an effect that the sway of passengers in the car 7 can be suppressed when an earthquake or a fire occurs.

Moreover, in the present embodiment, the video signal output from the image distribution unit 15 to the monitor device 13 in the car 7 is RF-modulated, so that the modulated signal is image-distributed from the television camera 10. Unit 15
Since it can be output by superimposing it on the signal line (moving cable 14) of the video signal input to, it is only necessary to add one signal line to the existing elevator, saving the signal line and performing construction work. A significant cost reduction can be expected due to the simplification. However, the modulation method of the video signal is not limited to RF modulation.

[0020]

The in-car image capturing apparatus according to the present invention is embodied in the form as described above and has the following effects.

[0021] An image in the car taken by the TV camera and various video information such as teletext and bulletin board information are selectively selected by the image distribution device with respect to the monitor device installed in the car or on each floor. Since it is distributed, passengers are aware that it is an elevator with a monitoring system, but the image in the car is not continuously displayed, so tension may be forced inside the car Thus, crimes in the car can be deterred without causing passenger discomfort. Further, if the monitor device is installed in each floor hall, the passengers can recognize the elevator monitoring system before getting into the car, so that the crime prevention effect can be improved. Then, when a predetermined trigger signal that notifies the passengers entering and leaving is input to the image distribution device, if the image in the car is preferentially distributed to the monitor device, when the passengers in the car are replaced, Since the image in the car is displayed, the crime deterrent effect is further enhanced.

Further, when the image distribution device outputs the character string for crime prevention stored in advance on the image in the car to be distributed to the monitor device, the image in the car is simply displayed. It is possible to clearly impress that the inside of the car is being monitored, as compared with the case of only.

Further, the image distribution device modulates a video signal output to a monitor device installed in the car, and the modulated video signal is input to the image distribution device from the television camera. If the signal line is output by being superposed on the signal line, it is only necessary to add one signal line to the existing elevator, so that the cost can be reduced by saving the signal line and simplifying the construction work.

Further, when the image distribution apparatus receives a trigger signal indicating the occurrence of an emergency such as an earthquake or a fire, distribution of any of the plurality of types of images to the monitor apparatus is interrupted and stored in advance. If an emergency character string is delivered to the monitor device, it is necessary for passengers in the car by using the monitor device in the car when an earthquake or fire occurs. The message can be notified promptly.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a system configuration of an embodiment of a car image capturing apparatus according to the present invention.

FIG. 2 is a flowchart showing a basic operation of the same embodiment.

FIG. 3 is an explanatory diagram showing an example of various images displayed on a monitor device and images recorded on a video recorder in the same embodiment.

FIG. 4 is an explanatory diagram showing a basic system configuration of a conventional technique.

[Explanation of symbols]

7 Car 8 Machine room 9 Hall 10 TV camera 11, 15a Signal discriminator 13, 19 Monitor device 14 Moving cable 15 Image distribution unit 15b Character generator 15c Switcher 15d Modulator 15e Microcomputer 16 Video recorder 17 Text broadcasting tuner 18 Message unit 20 control panel

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuichi Akiyoshi 1-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building Systems Co., Ltd. (72) Makoto Kuroki 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi In a building system (56) Reference JP-A-3-31177 (JP, A) JP-A-8-277080 (JP, A) JP-A-49-26953 (JP, A) JP-A-6-263355 (JP, A) Actual development Sho 61-128257 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B66B 3/00 B66B 5/00

Claims (2)

(57) [Claims] 1. A television camera for photographing the inside of a car,
In an in-car image capturing device for an elevator having a video recorder for recording an image in a car captured by this television camera, and a monitor device for displaying the image in the car, the monitor device being in a car and at a hall on each floor. An image distribution device is provided which is installed at at least one place, and which inputs a plurality of types of video signals including a video signal of the television camera and selectively distributes the image to the monitor device.
This image distribution device allows passengers to enter and leave the elevator control panel.
When the trigger signal informing Ri is not input delivered selectively to the monitor device in the plurality of types time preset image spacing and display order, the elevators
An in- car image capturing apparatus for an elevator, wherein the in-car image is preferentially distributed to the monitor device when the trigger signal is input from the control panel . 2. The image distribution device is configured to output a character string for crime prevention stored in advance on the image in the car to be distributed to the monitor device, and output the superimposed character string. Inside the elevator car shooting device.