JP3629993B2 - Speaker with fire detector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker with a fire detector.
[0002]
[Prior art]
In buildings that contain a large number of people, fire alarms are installed to detect the occurrence of a fire and notify the people in the building of the fire, and in the event of an emergency such as a fire, Broadcasting facilities are also provided for guidance. However, the fire alarm facility and the emergency broadcast facility are installed independently. In addition, the fire detector, which is one of the fire alarm equipment, and the speaker, which is one of the emergency broadcast equipment, are both installed on the ceiling of the building and installed in the disaster prevention center, etc. Despite being connected to a fire receiver, broadcast amplifier, etc., it was constructed separately and wired separately.
[0003]
For this reason, a large number of fire detectors and speakers are mixed and installed on the ceiling. When newly installing or adding to the ceiling, both must be separately installed on the ceiling, which makes wiring work complicated. It was time consuming and cumbersome and was not good looking.
[0004]
In order to solve the above problems, as disclosed in Japanese Patent Application Laid-Open No. 7-306988, the fire detector in the fire alarm facility and the speaker in the emergency broadcast facility are integrated to share the wiring. A fire detector with an integrated speaker has been invented. Also, as seen in Japanese Patent Laid-Open No. 58-54495, a fire detector with a built-in speaker in which a speaker is built in the fire detector has been invented.
[0005]
[Problems to be solved by the invention]
However, all the fire detectors installed in a building that accommodates a large number of people will be made into speakers with fire detectors such as the above-mentioned speaker integrated fire detector and built-in speaker fire detector. Instead, it may be more convenient to provide the fire detector and the speaker separately, which makes it difficult for manufacturers who manufacture the speaker with the fire detector to share the same variety. Also, for speakers that do not have much adverse effects even if some dust drifts, take the installation work to the early process, and for fire detectors that suffer adverse effects even if slight dust drifts There was a problem that it was impossible to adjust the process, such as taking the work to a later process.
[0006]
The present invention has been made to solve the above-described problems. The object of the present invention is to make the speaker body common regardless of the necessity of the fire sensor, and to An object of the present invention is to provide an excellent speaker with a fire detector capable of shifting the construction period.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a speaker main body embedded in a ceiling and a fire detector attached to the front surface of the speaker main body. And a guard for covering.
[0008]
In addition, the speaker main body embedded in the ceiling and a guard to which the detector base to which the fire detector head is detachably attached are attached to detachably cover the front surface of the speaker main body are provided. Is.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a speaker with a fire detector according to the present invention will be described in detail with reference to FIG. FIG. 1 is an exploded perspective view of a speaker with a fire sensor attached to the ceiling, as seen from diagonally below, with the ceiling partially broken.
[0010]
As shown in FIG. 1, the speaker with a fire detector includes a speaker body 1 and a guard 2. In FIG. 1, A is a ceiling board. The ceiling plate A, as sound emitted from the speaker body 1 is clearly transmitted without being soundproof by ceiling board A, a circular sound-transmitting hole A ₁ is provided.
[0011]
The speaker main body 1 includes a speaker 10, a mounting frame 11, and a terminal block 12. The mounting frame 11 is for fixing the speaker 10 and has a substantially square outer shape, and includes a circular opening 11 _a facing the speaker 10. The terminal block 12 includes a pair of audio terminals for connecting an audio signal line from the broadcast amplifier and a pair of line terminals for connecting a sensor line from the fire receiver. 11 is attached to one corner of the upper surface. Further, in the opening 11 _a near a lower surface of the mounting frame 11, suspended springs 13, 13 for attaching the guard 2 is provided in the diameter direction position. Further, a sensor connector 14 connected to the above-described line terminal is drawn out from the mounting frame 11 near the terminal block 12.
[0012]
The guard 2 is for protecting the speaker 10 and preventing the speaker 10 from being exposed and detracting from the beauty. The guard 2 includes an outer frame body 20, a mesh cover 21, and a fire detector 22. The outer frame body 20 is circular. The mesh cover 21 is made of a mesh steel plate, the periphery of which is fixed to the outer frame body 20, and the center portion is slightly swelled downward. The fire detector 22 detects the occurrence of a fire from the smoke concentration or the ambient temperature rise, and is attached to the center of the mesh cover 21. Further, a connector 23 for connecting the fire sensor 22 to the fire receiver by connecting to the sensor connector 14 is drawn out from the back side of the mesh cover 21 from the back surface of the fire sensor 22.
[0013]
In addition, hooks (not shown) for hooking the suspension springs 13 and 13 are provided at positions corresponding to the back portions of the outer frame body 20, and the guard 2 is connected to the speaker main body by the suspension springs 13 and 13. It is urged so that it can be attached and detached. In consideration of the case where the fire sensor is not necessary and used only as a speaker, a guard without the fire sensor 22 is also prepared separately.
[0014]
The speaker with a fire sensor configured as described above can be constructed as follows. That is, in a reinforced concrete building such as a building, interior equipment work is performed after the frame work. The electrical wiring work is carried out relatively early in the interior equipment work. Broadcasting equipment is indispensable even during construction, and it is customary to complete construction related to broadcasting equipment at the same time as electrical wiring work. Therefore, the speaker is also installed relatively early in the interior equipment work.
[0015]
However, during the relatively early period of interior equipment construction, construction work for grinding and cutting the concrete of the skeleton is frequently carried out and a lot of dust drifts around it, which makes it more accurate than a fire detector. It is not suitable for the environment of the equipment, and causes the fire detector to fail. Therefore, although the speaker main body 1 is attached to the ceiling board A at a relatively early stage of interior equipment construction, the audio signal line from the broadcast amplifier and the sensor line from the fire receiver are connected to the terminal block 12. At this point, the guard 2 to which the fire detector 22 is attached is not yet attached, and the fire detector 22 is not exposed to dust.
[0016]
In addition, in the speaker main body 1 where the guard without the fire detector 22 is attached, the guard without the fire detector 22 prepared separately is attached at the same time as the speaker main body 1 is attached to the ceiling plate A.
[0017]
Then, at the time when the drift of dust is reduced at the end of the interior equipment construction, the guard 2 to which the fire detector 22 is attached is prepared, and the connector 23 is connected to the sensor connector 14 and the outer frame body. A hook (not shown) provided on the back portion of 20 is hooked on the suspension springs 13 and 13, and the guard 2 is attached so as to cover the sound hole A ₁ of the ceiling plate A.
[0018]
In this case, since the connector 23 is inserted into the sensor connector 14 of the speaker body 1 and the hooks provided on the back of the guard 2 are suspended from the suspension springs 13 and 13, the attachment and removal of the guard 2 is easy. Good workability.
[0019]
Further, by attaching the guard 2 to the speaker body 1, even if an object approaches the speaker 10 from below, the guard 2 protects the sound and the sound emitted from the speaker 10 can be emitted from the mesh cover 21 without being interrupted. Moreover, the structure of the speaker body 1 can be hidden, and the speaker with a fire detector can be made to look good.
[0020]
Moreover, in the speaker with a fire detector as described above, the speaker body 1 and the guard 2 are detachably separable, so that the speaker body 1 is used as a speaker with a fire detector. It may be attached to a place, or it may be attached to a place used only as a speaker without a fire sensor, but the same speaker body 1 is used in any case apart from the guard 2. Therefore, unlike conventional speakers with fire detectors, in which the main body of the speaker and the fire detector are inseparably integrated, the fire detector is not necessary and cannot be used as a speaker only. In the speaker body 1, it is possible to make common production varieties, and it is possible to create mass production merits, with a high-quality fire detector It becomes possible to inexpensively provide a speaker.
[0021]
Further, in the speaker with the fire detector configured as described above, unlike the conventional speaker with the fire detector in which the speaker body and the guard are inseparably integrated, the construction period of the speaker body 1 and the guard 2 is different. It can be made into a speaker with a fire detector that is flexible and easy to use.
[0022]
In addition, in the above-mentioned speaker with a fire sensor, the one with the fire sensor attached to the guard is exemplified, but the fire sensor is configured to be detachable into the base part and the head part, You may make it ship the base part of a fire detector attached to a guard.
[0023]
【The invention's effect】
According to the first aspect of the present invention, the speaker main body can be used in common regardless of the necessity of the fire detector to create a mass production merit, and a good quality can be supplied at low cost. This makes it possible to shift the construction period and to provide a speaker with a fire detector that is excellent in quality assurance.
[0024]
According to the second aspect of the present invention, the speaker body can be used in common regardless of the necessity of the fire detector to create mass production merits, and high quality products can be supplied at low cost. As a result, it is possible to shift the work period, and to provide a speaker with a fire detector that can easily replace the sensor head, perform maintenance easily, and have excellent quality assurance.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a state in which a speaker with a fire detector according to an embodiment of the present invention is attached to a ceiling, as viewed from diagonally below.
[Explanation of symbols]
1 Speaker body 2 Guard 22 Fire detector A Ceiling

Claims (2)

A speaker with a fire sensor, comprising: a speaker body embedded in a ceiling; and a guard to which a fire sensor is attached and detachably covers a front surface of the speaker body. A speaker main body embedded in a ceiling, and a guard to which a sensor base to which a fire detector head is detachably attached is attached and detachably covers a front surface of the speaker main body is provided. Speaker with fire detector.

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