JPH02175588A - Safety device for man conveyor - Google Patents

Abstract

PURPOSE:To prevent a man having a fire from utilizing a conveyor to prevent the generation of a fire from the conveyor by providing a device for detecting heat rays from the fire in a specified area on a platform to the conveyor. CONSTITUTION:A heat ray detecting device 3 for detecting an energy wave such as an infrared ray, etc. generated from a fire of some hundreds degrees Celsius, for example, a lighted cigarette, is provided on the ceiling in the vicinity of a platform to a conveyor 1 to set a heat ray detection area 4 for passengers passing through it. When a passenger having a lighted cigarette passes through the detection area 4 enclosed by dotted lines in the drawing, a warning device operates based on information from the heat ray detecting device 3 to give a warning signal and to stop the operation of the conveyor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a safety device for a passenger conveyor installed on an escalator or a pedestrian conveyor such as a pedestrian walkway.

[Conventional technology]

A human conveyor generally has an endless circulation conveyor belt with connected footboards (circulating inside the body).

Then, one passenger is transported on a circulation conveyance belt, but at this time, flammable foreign matter such as paper thrown by the passenger onto the tread surface is found in the gap between the tread and the frame, and when the tread board is at the end of the transport process. 'When the paper is turned over, it falls and accumulates at the bottom of the frame.

On the other hand, flammable lubricant is used in the moving parts of the circulating conveyor belt, and it spreads to the bottom of the body.
Electrical wiring for lighting equipment etc. attached to the passenger conveyor is installed inside the frame. As a result, foreign matter with flammable oil adhering to it accumulates inside the frame, and this is ignited by electrical wiring leakage.1 Passengers carelessly throw away lighted cigarette butts on the footboard and fall into the frame. There is a risk of being exposed and catching fire. In this way, the frame is in a state where a fire is likely to occur, and the outer surface is covered for the safety of one passenger and for aesthetic reasons. In addition, because the circulating conveyance belt and its support devices are arranged inside the frame, it is difficult for fire extinguishing personnel to enter the frame, and even to see through the frame through the first inspection opening. Also, opening the entrance itself.

(This would allow outside air to enter the body, which could encourage a fire inside the body. Therefore, if a fire were to occur inside the body, extinguishing it would be extremely difficult.) be.

[Problem to be solved by the invention]

Conventional passenger conveyors are configured as described above, so they can be used in aisles 1 and 20 that are used by an unspecified number of people at stations, department stores, etc.
Some passengers are smoking on the passenger conveyor installed in the stairs, and there are problems such as discarded cigarettes entering the passenger conveyor and igniting combustible materials such as garbage accumulated in the machine room, causing a fire. was there.

This invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a safety device for a passenger conveyor that can prevent fires from occurring from the passenger conveyor.

[Means to solve the problem]

A safety device for a passenger conveyor according to the present invention is configured to detect heat rays from fire such as cigarettes in a predetermined area at the entrance of the passenger conveyor.

[For production]

What is the safety device for the passenger conveyor in this invention?

By detecting heat rays near the entrance, it can determine if a smoker or other person is about to board the passenger conveyor, and issue a warning or stop the passenger conveyor.

〔Example〕

An embodiment of the present invention will be described below.

In Figures 1 and 2, (1) is a passenger conveyor such as an escalator, (2) is an entry prevention fence, (3) is a heat ray detection device, (4) is a heat ray detection area, (5) is a smoker, A and B are the spread angles of the heat ray detection area (4) in the front direction and the side direction.

A heat ray detection device (3) that detects energy waves such as infrared rays emitted from cigarettes and other flames with temperatures of several hundred degrees is installed on the ceiling near the passenger conveyor (1).

It is set for passengers passing through the heat ray detection area (4). As a result, when a passenger with a lit cigarette passes through the heat ray detection area (4), the warning device is activated based on the information from the heat ray detection device +31.

FIG. 3 is a block diagram of the configuration of the heat ray detection device (3). (6) is an optical system device, and (7) is a disturbance removal type thermal element.

(8) is a band amplifier, (9) is a signal processing circuit, Q[I
is the drive circuit and συ is the warning device.

Heat rays from a cigarette or the like are inputted to a heat ray detection device (3) by an optical system device (6). This optical system device (3) is one of the requirements for defining the range of the heat ray detection area (4), and is capable of adjusting the spread angles A and B of the heat ray detection area (4).

Next, the disturbance elimination type thermal element (7) is a noise elimination type thermal element that eliminates heat rays other than fire, such as light sources and reflected light, and it converts the intensity of the heat rays input from the optical system device (6) into electric power. Convert to a specific intensity and output. Next, the band amplifier (8)
In order to select energy waves such as infrared rays with wavelengths and frequencies specific to fire, only a predetermined band is allowed to pass through. At the same time, the electric signal of this energy wave is passed through a band amplifier (8
) is amplified by.

The signal is sent to the signal processing circuit +91. Here, the type and amount of hot rays are determined from the electric signal, and it is determined whether the flame has passed through the hot ray detection area 14). If applicable, a signal is sent to the drive circuit a, and this drive circuit scream activates a warning device (111).The warning device, for example, uses a voice to ask the smoker to put out his cigarette.

The safety device for the passenger conveyor consists of two or more heat ray detection devices (3) and differs from a normal fire alarm device in the following points.

(1) A fire alarm device detects room temperature or smoke concentration, whereas the safety device for a passenger conveyor according to the present invention detects heat rays and does not detect room temperature or smoke.

(11) While a fire alarm system detects the state of the atmosphere in an enclosed place such as a room, the safety system for a passenger conveyor according to the present invention detects the presence of objects passing by in a very short period of time. The device detects the state of the device, and requires a highly sensitive and high performance device.

[+iil Fire alarm systems are for early detection when a fire has already started.

The safety device for a passenger conveyor according to the present invention takes into account that the passenger conveyor has a structure that is likely to cause a fire, and that it is difficult to extinguish a fire once it occurs.
This is provided to prevent the occurrence of fire.

As described above, the purpose of the safety device for a passenger conveyor according to the present invention is not to detect fire.

This is to prevent fires by preventing users of passenger conveyors from passing through them while smoking or carrying open flames.

Incidentally, in the above example, the case of tobacco was shown.

Any other type of fire may be used. Also, it is not limited to just one person passing through.

It may also be used when detecting a high-temperature object.

Further, in the above embodiment, the case where the heat ray detection device is provided on the ceiling is shown, but it may be provided on the side wall or the floor.

Further, in the above embodiment, an example is shown in which a warning is issued when a heat ray is detected, but it may also be possible to take actions such as stopping a passenger conveyor or spraying water.

Further, in the above embodiment, in the heat ray detection device.

Although the case where the hot rays are converted into electrical signals to detect the hot rays has been shown, the case where the hot rays are converted into other signals such as optical signals may also be used.

〔Effect of the invention〕

As described above, according to the present invention, the safety device of the passenger conveyor is configured to take safety actions such as warning by detecting heat rays, so it is possible to prevent the passenger conveyor from being used with open flames. This has the effect of preventing fires from occurring from passenger conveyors.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a block diagram of the present invention. 11...Man conveyor, (2)...Entry prevention fence, (
3)... Heat ray detection device, (4)... Heat ray detection area, (5)... Smoker. (6)...Optical system device, (7)...Disturbance removal type thermal element, (8)...Band amplification a, 19)...Signal processing circuit, αQ...Drive circuit. σt...Warning device. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] A safety device for man conveyors that detects heat rays from fire in a predetermined area at the entrance of man conveyors.