JPH10139345A - Disaster prevention device for man conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fire caused when cigarette thrown to a step advances into the head of a flight of stairs of a man conveyer to ignite wooly dust in a structure or oil is ignited by providing a heat detecting means on the lower side of a handrail near the head of a flight of stairs of the man conveyer. SOLUTION: The cigarette thrown on a step 4 by a passenger is moved in the heated state to a comb plate 5. By this movement, the cigarette enters a detection area of heat sensors 8a, 8b or heat sensors 7a, 7b, infrared rays from the cigarette are detected by the respective sensors 7a-8b to output an abnormal signal. If cigarette is thrown away after passing the heat sensors 8a, 8b, it can be surely detected by the heat sensors 7a, 7b. After the abnormal signal is detected, for example, a warning of the danger of causing a fire is put on the air by a broadcasting device, or the abnormal signal is sent to a control room to give a warning of danger of producing a fire in the man conveyer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention device for a man conveyor, which prevents smoke and fire from being generated on the man conveyor such as an escalator and a moving sidewalk.

[0002]

2. Description of the Related Art Many conveyers such as escalators and moving walkways are used by many passengers, so that a large amount of so-called cotton dust is scattered, and mechanical oil adhering to these and the entire backside of the structure and accumulated oil is collected. A large amount of heatable material is generated by cotton dust. Therefore, when a passenger gets on the escalator while smoking a cigarette and throws out the lit cigarette on the steps,
It often happens that the sparks fly into the escalator and ignite the cotton dust, producing smoke and developing into a fire. In order to prevent such a situation, for example, in Japanese Patent Application Laid-Open No. 2-175588, an infrared detector is provided on the ceiling in front of the escalator entrance, and when a passenger trying to get on the escalator while smoking is passing, the cigarette is There has been proposed a device which detects a fire in a car and warns passengers.

[0003]

The above-mentioned conventional apparatus can give a warning to a passenger who smokes, but cannot respond to an inexplicable passenger who ignores the cigarette, and cannot take an escalator. It is not effective for passengers who smoke from tobacco.

An object of the present invention is to provide a disaster prevention device for a man-conveyor which can solve the above-mentioned problems in the prior art and can prevent smoking and fire caused by a cigarette fire.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a man conveyor in which a step moves between balustrades on both sides. Means are provided.

In the disaster prevention device for a man conveyor, another heat detecting means is provided below the balustrade in the middle of the man conveyor.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a perspective view showing a disaster prevention device for a man conveyor according to an embodiment of the present invention.

In this figure, 1 indicates an escalator. 2a,
2b is the balustrade of escalator 1, 3a and 3b are 2 of the balustrade
a, a handrail that moves on 2b, 4 is a step on which a passenger rides,
5 is a comb plate. If this escalator is for descending, the comb plate 5 serves as a passenger exit and 6
Is the entrance for passengers. 7a and 7b are infrared sensors installed under the balustrades 2a and 2b on the exit side of the escalator, and 8a and 8b are infrared sensors installed under the balustrades 2a and 2b in the middle of the escalator 1. It is a heat sensor.

[0009] When the passenger throws away the cigarette on the step 4, the thrown cigarette moves toward the comb plate while emitting light heat. The tobacco that emits light heat is moved to move the heat sensor 8a, 8b or the heat sensor 7
Each of the heat sensors enters the detection areas a and 7b, and detects an infrared ray generated from a cigarette fire, and outputs an abnormal signal. Even if the tobacco is thrown away at a point in time after passing the heat sensors 8a and 8b, it is detected by the heat sensors 7a and 7b installed at the exits (entrances of the steps), and reliable detection is performed.

[0010] After being detected as an abnormal signal, the abnormal signal can be used as appropriate according to the location where the man conveyor is used. For example, a broadcaster may broadcast a warning that there is a risk of fire, or an escalator remote abnormality monitoring device that uses a telephone line may send an abnormal signal to a maintenance company. Can contact the administrator of the If the responsible person is resident in the management room, an abnormal signal can be transmitted to the management room to warn that there is a risk of firing of the man conveyor. In the description of the above-described embodiment, an example in which two heat sensors are attached to face each other has been described. However, the present invention is not limited to this, and the object can be sufficiently achieved by installing only one side. Also, the example in which the heat sensor is interrupted and installed at the exit has been described, but it is apparent that only the exit may be installed.

[0011]

As described above, according to the present invention, since the heat detecting means is provided at the lower part of the balustrade near the exit of the conveyer or at the lower part of the balustrade and the lower part of the balustrade halfway through the conveyer, the heat detecting means is provided on the step of the conveyer. The tobacco that has been thrown out enters the exit of the conveyer (the entrance of the step), and the cotton dust in the structure is ignited or the oil is ignited. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disaster prevention device for a man conveyor according to an embodiment of the present invention.

[Description of Signs] 1 Escalator 2a, 2b Railing 3a, 3b Railing 4 Steps 5 Comb plate 6 Ride 7a, 7b Heat sensor 8a, 8b Heat sensor

Claims (3)

[Claims] 1. A disaster prevention device for a man conveyor in which a step is moved between balustrades on both sides, wherein a heat detecting means is provided below the balustrade near an exit of the man conveyor. 2. The disaster prevention device for a man conveyor according to claim 1, wherein another heat detection means is provided below the balustrade in the middle of the man conveyor. 3. The disaster prevention device for a man conveyor according to claim 1, wherein the heat detecting means or the other detecting means is provided on at least one side of the balustrade lower part. .