JPH03180997A - Broadcasting equipment for building - Google Patents

Abstract

PURPOSE:To accurately inform an intra-building emergency state to passengers in an elevator cage by connecting a speaker for an emergency calling equipment already arranged in the cage to an intra-building broadcasting equipment at the time of generating emergency broadcasting. CONSTITUTION:When an emergency event, e.g. a fire, is generated in a building, an emergency broadcasting switch is turned on and the intra-building broadcasting equipment 5 executes emergency broadcasting. When the emergency broadcasting switch is turned on, a contact 6a is closed, a switching delay 3 is energized, a normally opened contact 3a is closed, a speaker 4 is connected to the output side of the equipment 5 through the contact 3a, and emergency broadcasting is transmitted to the cage through the speaker 4. When a failure occurs and a call button 1 is depressed by a passenger in the cage, the call from the passenger is informed to the outside. Thus, the intra-building emergency information can be accurately informed to the passengers in the cage without losing the information of the confined state in the elevator cage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a broadcasting device for a building equipped with an elevator.

[Conventional technology]

BACKGROUND ART Conventionally, as a system for broadcasting information to elevator users, a system in which a speaker is provided in a car is known, as described in Japanese Patent Application Laid-open No. 55-156171.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the speaker is used exclusively for announcement announcements, and installing such a speaker in an existing elevator car requires space or installation space.
It wasn't that easy because there was one problem with processing. In addition, elevators are equipped with an emergency call device to communicate with the outside when a passenger is trapped in the car due to a malfunction, etc., and the emergency call device and the in-house public address system are independent of each other. Because of this, the in-house announcement will be played while the emergency non-call device is in operation. In other words, there was a risk that the emergency call device and the in-house public address system would operate at the same time, and emergency information in the facility would not be accurately conveyed to the passengers in the car.

SUMMARY OF THE INVENTION An object of the present invention is to provide a building broadcasting device that can be easily installed in existing elevators and that can accurately convey broadcasts to passengers.

[Means to solve the problem]

In order to achieve the above objective, an external communication device and a switching means interposed between the audio signal output side of the in-house broadcasting device and the speaker are provided, and when an emergency broadcast is made in the building, the switching means is switched between the speaker and the speaker. The configuration is such that it is connected to the in-house broadcast system.

[Effect]

With the above configuration, the speaker of the emergency call device already installed in the elevator car is connected to the in-house public address system during emergency broadcasts, so there is no need to separately install a speaker for in-house announcement. In addition, even if there is an in-house emergency broadcast while the emergency call device is operating, only the speaker will be used for the emergency broadcast, and the original function of the emergency call device will not be fulfilled, i.e., passengers are confined in the car. To accurately notify passengers in a car of emergency information within a building without losing information about the situation to the outside.

〔Example〕 Embodiments of the present invention will be described below with reference to the drawings.

The first construction drawing is a system diagram showing an embodiment of the building broadcasting device of the present invention.

An intercom device 2 disposed inside the car is connected between the uninterruptible power supplies P and N via a call button 1, and this intercom device 2 is connected to an intercom 4 via a normally closed contact 3b of a switching relay 3. These constitute an external communication device. The public address system 5 has a switch (not shown) that is operated during emergency broadcasts, and the audio signal output side of the public address system 5 is connected to the speaker 4 via the normally open contact 3a of the switching relay 3. There is. The changeover relay 3 is operatively connected to a contact 6a of an emergency broadcast switch. Connected between uninterruptible power supplies P and N,
The relay 7, which operates when the call button ↓ is pressed, has a normally open contact 7a and is self-maintaining. A switch 8 installed at a location away from the elevator car (not shown) is connected in series with the normally open contact 7a and in parallel with the call button 1 to release the operation of the intercom device 2. Spinicas 9 for in-house broadcasting are placed at various locations within the building 3.

Next, the operation of this embodiment will be explained.

When an emergency situation such as a fire occurs in the hall, an emergency broadcast switch is turned on and an emergency broadcast is made from the hall broadcasting device 5. When the emergency broadcast switch is turned on, contact 6a
is closed, the switching relay 3 is energized, the normally open contact 3a is closed, and the speaker 4 is connected to the public address system 5 via the contact 3a.
is connected to the output side of the car, and an emergency broadcast is broadcast through the speaker 4 inside the car. At this time, if a failure occurs and the call plumber is operated by a passenger in the elevator car,
A closed circuit between the call button 1 and the relay 7 is formed between the uninterruptible power supplies P and N, the relay 7 is energized, and its normally open contact 7a
The uninterruptible power supply P will continue to operate even if the call leadwork stops operating due to the closing of P.
, N, a closed circuit of switch 8, contact 7a, and relay 7 is formed, and relay 7 is self-maintained. As a result, the call from the passenger inside the car is announced to the outside. Incidentally, since the speaker 4 is connected to the in-house public address system @5 side, the sound from the outside is not played, but the function of notifying the outside of the abnormality 4 of the car is not lost.

In the above embodiment, even if the emergency call device is operated during an in-house emergency broadcast, only the speaker 4 is connected to the in-house announcement device, but the normally closed contact of the relay 7 is switched and connected in series with the relay 3. By intervening, the speaker 4 can be connected to the emergency call device even during emergency broadcasting.

〔Effect of the invention〕

According to the present invention, since the speaker of the emergency call device already installed in the elevator car is connected to the in-house public address system during emergency broadcasting, there is no need to separately install a speaker for in-house announcement. Even if there is an in-house emergency broadcast while the emergency call device is in operation, only the speakers are used for emergency broadcasts, and the emergency call device's original function, i.e., when passengers are trapped in the car, is ignored. This has the effect of accurately informing passengers in the car of an emergency situation within the building without losing the ability to inform the outside.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing an embodiment of the building broadcasting device of the present invention. 1... Call button, 2... Intercom device, 3...
Switching relay, 4... Speaker, 5... In-house public address system. 72

Claims (1)

[Claims] (1) In a broadcasting system for a building equipped with an elevator having an external communication device with a speaker and an in-building broadcasting device, the external communication device and the in-building broadcasting device are interposed between the audio signal output side and the speaker. 1. A broadcasting system for a building, characterized in that the switching means is provided with a switching means, and the switching means is connected to a speaker and an in-building broadcasting device when an emergency broadcast is made in the building.