JP5078591B2 - Security camera device for elevator - Google Patents

Description

  The present invention relates to a security camera device for an elevator that improves the reliability of a video signal photographed by a security camera and realizes downsizing and cost reduction.

In a conventional security camera device for an elevator, power is supplied to the security camera installed in the cage room from an elevator device placed on the upper part of the cage.
In addition, a video signal photographed by the security camera is transmitted to a monitor installed in a monitoring room or the like via a cable for elevator control by a wired system using a coaxial cable or the like.

Therefore, in general, when installing a security camera in the elevator car room, it is necessary to wire a power cable and a video signal transmission cable between the security camera and the elevator equipment and to electrically connect them. It was.
As a result, the electrical noise from the elevator equipment enters the security camera via the wiring of each cable, which degrades the quality of the video signal photographed by the security camera and takes a lot of time for troublesome wiring work. Therefore, there is a problem that the reliability of the video signal is lowered, and the entire apparatus is increased in size and cost.

On the other hand, there has also been proposed a technology that eliminates the need for wiring of a power cable and a video signal transmission cable by using a power source combining a solar battery and a secondary battery and wirelessly transmitting a video signal (for example, patent Reference 1).
However, since the camera device described in Patent Document 1 is premised on outdoor installation and does not consider the monitoring function inside the elevator car room, it cannot be used as a security camera device for an elevator.

JP 2002-77893 A

In the conventional security camera device for an elevator, wiring is necessary for a power cable and a video signal transmission cable, and thus there is a problem in that the reliability of the video signal is reduced, the overall size of the device is increased, and the cost is increased.
Moreover, since the camera apparatus described in Patent Document 1 is premised on use under sunlight and does not consider deterioration in appearance due to the installation of solar cells, it cannot be applied in an elevator car room. was there.

  The present invention has been made to solve the above-described problems, and by placing a planar amorphous silicon solar battery panel on the top of the security camera, no power supply wiring is required, An object of the present invention is to obtain an elevator security camera device that improves the reliability of the signal and realizes downsizing and cost reduction of the entire device.

A security camera device for an elevator installed in an elevator car room according to the present invention includes a security camera disposed at a lower part of ceiling lighting in the car room, and a planar solar panel placed on the upper part of the security camera. In the security camera device for elevators that converts the illumination light from the ceiling lighting into electricity and supplies power to the security camera , the security camera is extendable to transmit the captured video signal to the outside It has a whip antenna, and the whip antenna is disposed so as to penetrate the side wall of the cage room and protrude into the elevator hoistway .

  According to the present invention, an amorphous silicon solar cell panel having high photoelectric conversion efficiency with respect to the wavelength region of visible light is used, and power is supplied to the security camera from the amorphous silicon solar cell panel. Intrusion of static noise can be blocked, video signal reliability can be improved, the entire device can be downsized, and costs can be reduced.

Embodiment 1 FIG.
1 is a side view showing a security camera portion of a security camera device for an elevator according to Embodiment 1 of the present invention.
In FIG. 1, a security camera 10 which is a main body of an elevator security camera device is installed on a side wall 21 in an elevator cage 22.

  In the camera cover 11 of the security camera 10, a board camera 12 for photographing the inside of the basket room 22, a relay device 13 connected to the board camera 12, and amorphous silicon that performs photoelectric conversion most efficiently in the visible light wavelength range. A solar cell panel (hereinafter simply referred to as “solar cell panel”) 14, and a condensing lens 15 that collects irradiation light L from ceiling lighting (described later) in the basket chamber 22 and irradiates the solar cell panel 14. A whip antenna 16 that can extend and contract so as to protrude from the side wall 21 into the hoistway is provided.

  The relay device 13 is supplied with power by an electric signal E converted from light to electricity by the solar cell panel 15, and stabilizes the power supplied from the solar cell panel 15, and directs the board camera 12 based on the supplied power. A power output circuit for supplying the power Dp, a receiving circuit for receiving the video signal Si from the board camera 12, and a transmitting circuit for modulating the video signal Si and outputting it to the whip antenna 16 are provided. In addition, since the circuit configuration of the relay device 13 is known, the illustration is omitted individually.

  The solar cell panel 14 is provided in a planar shape part on the upper part of the camera cover 11, and the upper part is covered with a condenser lens 15. Although the condensing lens 15 is a device for condensing with high efficiency without increasing the area of the solar cell panel 14, a specific example is known from a prior document (for example, Japanese Patent No. 2913024), so here. Omitted.

The planar solar cell panel 14 may be disposed outside the upper surface flat plate portion of the camera cover 11, but if the camera cover 11 is a light-transmitting material, the camera cover 11 as shown in FIG. You may arrange | position inside. The upper part of the camera cover 11 may be an opening.
As shown in the figure, the solar cell panel 14 and the condensing lens 15 efficiently receive the irradiation light L from the ceiling illumination in the basket room 22 at the center of the ceiling (in the light source direction) in the basket room 22. It is provided so as to be inclined slightly.

  Moreover, although the solar cell panel 14 and the condensing lens 15 become a factor which impairs an external appearance property, since it is provided in the planar shape part of the upper surface part of the substantially spherical security camera 10, it is in a position higher than a human eye. The installed security camera 10 is not seen by users and does not impair the appearance.

FIG. 2 is a side view showing the whole elevator apparatus in a building to which Embodiment 1 of the present invention is applied, and schematically shows a peripheral configuration of the cage 20 in which the security camera 10 of FIG. 1 is installed.
In FIG. 2, a ceiling illumination 23 is provided in the cage room 22, and a station 24 serving as an elevator device is placed on the upper portion of the cage 20.

The station 24 on the cage 20 is connected to an elevator control panel 26 installed on the building roof via a control cable 25. Under the control of the elevator control panel 26, power is supplied into the cage room 22 and various control information. Give and receive.
The cage 20 is suspended from a rope 27, and moves up and down in the hoistway 30 through a hoisting machine 29 together with a counterweight 28 suspended from the other end of the rope 27.

A diversity antenna 31 for reception is installed at the lower end of the elevator hoistway 30.
A monitor (not shown) of a monitoring center is connected to the diversity antenna 31 via a video signal transmission cable 32. The monitoring center performs monitoring in the basket room 22 based on the transmitted video signal. Is called.

The ceiling lighting 23 in the basket room 22 is involved in the appearance in the basket room 22 and brightens the inside of the basket room 22 and is always constant, unlike sunlight (which changes depending on weather conditions and time zones). Holds illuminance.
The security camera 10 is disposed above the side wall 21 of the basket room 22 and below the ceiling lighting 23. The solar battery panel 14 (see FIG. 1) in the security camera 10 converts the irradiation light L from the ceiling illumination 23 received at a short distance into electricity and supplies power to the security camera 10.

Therefore, the ceiling lighting 23 can sufficiently contribute to the power supply of the low power consumption board camera 12 if the solar battery panel 14 in the security camera 10 is properly installed.
Further, by using the condensing lens 15 in combination with the upper part of the solar battery panel 14, it is possible to supply power to the security camera 10 even with the ceiling illumination 23 set at low illuminance for the purpose of production. That is, the combination of the solar battery panel 14 and the condenser lens 15 can cope with the ceiling illumination 23 having various illuminances.

  The whip antenna 16 is disposed so as to pass through the side wall 21 of the cage room 22 from the back of the security camera 10 and protrude into the elevator hoistway 30, and a radio signal (radio wave signal) W based on the photographed video signal Si. Is transmitted to the diversity antenna 31 in the hoistway.

At this time, since the radio wave signal W is reflected by the side wall 21 of the cage 20, the wall surface in the hoistway 30, the counterweight 28, and the like, various reflected wave noises are generated, but the diversity antenna 31 is used as a receiving antenna. Therefore, the disturbance of the video signal due to the reflected wave noise can be avoided.
The video signal received by the diversity antenna 31 is transmitted by wire to the monitor of the monitoring center via the video signal transmission cable 32.

  In the conventional apparatus, when the security camera 10 is installed in the cage room 22, power is supplied from the station 24 (elevator equipment) on the cage 20 to the security camera 10 by a cable connection. The video signal Si from 10 is transmitted to the station 24 by cable connection, and further transmitted to the elevator control panel 26 via the control cable 25, and both power supply and signal transmission are performed by cable connection.

  On the other hand, according to the first embodiment of the present invention, in the security camera device for elevators installed in the elevator car room 22, the security camera 10 disposed under the ceiling lighting 23 in the car room 22 And a planar solar cell panel 14 placed on top of the security camera 10, and the solar cell panel 14 converts the irradiation light L from the ceiling illumination 23 into electricity and supplies power to the security camera 10. The cable connection between the security camera 10 and the station 24 (elevator equipment) becomes unnecessary.

Thereby, the cable connection work between the station 24 (elevator device) on the car 20 and the security camera 10 in the car room 22 becomes unnecessary, and the work labor when installing the security camera 10 can be reduced.
That is, the security camera 10 can be installed in the basket room 22 while eliminating the need for wiring of the video signal transmission cable 32 from the security camera 10.

  Further, by securing the power source of the security camera 10 with the solar battery panel 14, it is not necessary to wire a power cable between the elevator device and the entire device can be reduced in size and cost.

  In addition, the power supply from the elevator equipment and the video signal transmission cable connection wiring are not required, so electrical noise (inverter noise for elevator operation) entering from the elevator equipment via the power line or from the elevator equipment Electrical noise (inverter noise) that enters the video signal transmission cable 32 by electromagnetic induction can be blocked.

Moreover, according to Embodiment 1 of this invention, since the amorphous silicon solar cell panel 14 with high photoelectric conversion efficiency was used with respect to light in the wavelength region of visible light, the ceiling illumination 23 in the basket room 22 Even if it is the irradiation light L, the power supply to the security camera 10 is attained.
Moreover, since the solar cell panel 14 was mounted on the upper part of the security camera 10, the irradiation light L from the ceiling illumination 23 can be received efficiently and can be electrically converted.
Moreover, since the solar cell panel 14 has a planar shape and is not visible to the user in the basket room 22, the appearance is not impaired.

Moreover, since the condensing lens 15 which covers the upper part of the solar cell panel 14 is provided so that a large amount of the irradiation light L can be received through the condensing lens 15, the condensing lens 15 can receive the light. The power supply to the security camera 10 can be performed without particularly increasing the area of the solar battery panel 14.
In addition, the appearance is further improved by covering the solar cell panel 14 with the condensing lens 15.

  A telescopic whip antenna 16 is provided on the rear surface of the security camera 10 so that the whip antenna 16 penetrates the side wall 21 of the cage room 22 and protrudes into the elevator hoistway 30 (outside the cage room 22). Since the video signal Si photographed by the board camera 12 is transmitted to the outside as the radio wave signal W, the radio wave signal W is reliably transmitted to the outside of the car room 22 without being blocked by the side wall 21 of the car room 22 itself. (Video signal Si) can be transmitted.

That is, the radio wave signal W is not affected by the radio wave shielding of the cage room 22, so that wireless communication is possible in the hoistway 30, and the radio wave shielding property in the car room 22 can be ignored.
Therefore, the video signal Si can be transmitted to the external receiving antenna even with a weak radio wave signal W with low power consumption.

Further, since the whip antenna 16 can be expanded and contracted, it can be accommodated in the basket room 22 when it is not needed, for example, when the security camera 10 is transported, and does not interfere with transportation.
In addition, since the radio signal W (video signal Si) is wirelessly transmitted from the whip antenna 16 to the external diversity antenna 31, wiring of the video signal transmission cable via the elevator device can be eliminated.

It is a side view which shows the security camera part of the security camera apparatus for elevators concerning Embodiment 1 of this invention. It is a side view which shows the whole elevator apparatus in the building in which Embodiment 1 of this invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Security camera, 11 Camera cover, 12 Board camera, 13 Relay device, 14 Solar cell panel (amorphous silicon solar cell panel), 15 Condensing lens, 16 Whip antenna, 20 Basket, 21 Side wall, 22 Basket room, 23 Ceiling lighting , 24 stations (elevator equipment), 26 elevator control panel, 27 rope, 28 counterweight, 29 hoisting machine, 30 hoistway, 31 diversity antenna, 32 video signal transmission cable, L irradiation light, E electrical signal, Si Video signal, W radio signal.

Claims (2)

A security camera system for an elevator installed in the car room of the elevator,
A security camera disposed under the ceiling lighting in the basket room;
A planar solar cell panel placed on top of the security camera;
In the security camera device for an elevator , the solar panel converts the irradiation light from the ceiling lighting into electricity and supplies power to the security camera.
The security camera has a retractable whip antenna for transmitting a photographed video signal to the outside,
The elevator camera apparatus according to claim 1, wherein the whip antenna is disposed so as to pass through a side wall of the cage chamber and protrude into a hoistway of the elevator.   The elevator security camera device according to claim 1, further comprising a condensing lens that covers an upper portion of the solar cell panel.

Images