JP2576325B2 - Ventilation system for duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device for a duct, which is provided with a decorative panel on the indoor side and whose main body is attached to the back of a ceiling or the like, for ventilation through a duct.

[0002]

2. Description of the Related Art This type of ventilation device is widely used as an air-conditioning device for buildings and public facilities. Its basic structure is composed of a box-shaped main body attached to the back of the ceiling or the like, and a decorative panel mounted on the main body and constituting a substantial indoor air inlet on the ceiling surface. In the body,
A ventilation path for exhaust is formed, and a blower for forming an exhaust flow is incorporated in the ventilation path.

In the ventilation device for a duct having the above-described structure, one end of the ventilation path of the main body is connected to the outside of the room by the duct, and the air in the polluted room can be exhausted to the outside of the room through the duct.

[0004]

The ventilation device for ducts as described above is suitable as a ventilation device for buildings and public facilities. However, since ceilings in such places have traditionally been fitted with lighting equipment and speakers for information broadcasting, the installation of this type of ventilator makes the ceiling more complicated and creates a harmonious indoor atmosphere. Tend to be difficult to form.

A duct ventilation system requires a space for duct piping and a relatively large installation space for a main body. Therefore, in order to keep the room small, the space above the ceiling is suitable as an installation location. The ceiling is not always suitable as a mounting place for the. In other words, most of the space behind the ceiling of a building or the like is a continuous space, and if the sound effect for this space is ignored, the sound of the speaker attached to the ceiling of a specific room will sound in other rooms, and the sound itself will be It will be of poor quality. Therefore, in actual practice, the speaker must be a speaker device with a speaker box, or a speaker box made of a sound absorbing material or the like must be mounted on the ceiling to mount the speaker.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ventilation system for a duct that does not compete with a speaker and does not compete with a mounting location, and that provides a simple and harmonious indoor atmosphere that functions satisfactorily as a speaker device.

[0007]

A ventilation device for a duct according to the present invention is mounted in a space such as a space above a ceiling, has one end of a ventilation passage formed inside a room on the indoor side, and a ventilation passage on the other surface. At the center of the decorative panel that is attached like a lid on the indoor side surface of the main body box that has an air outlet that can be connected to the duct of the road and is open, a speaker is installed facing the indoor side, and behind this speaker Is wrapped in a sound absorbing member that also serves as a ventilation guide formed in an umbrella shape.

[0008]

[Action] In the duct ventilator in the present invention is composed ventilation channel having a blower, the body box body, sound from speakers attached to the decorative panel diffuses into the ceiling
It becomes a speaker box to prevent that, with better without separately provided speakers for BG M and announcement other notification means, the sound absorbing member provided behind the decorative panel, after the acoustic characteristics of the speaker can be improved In addition, the flow of the exhaust gas in the relevant section is smooth.

[0009]

1 is a longitudinal sectional view of a duct ventilation device according to an embodiment of the present invention, and FIG. 2 is a plan view of the decorative panel.

The basic configuration of the illustrated ventilating device for a duct is the same as that of a well-known ventilating device for exhausting air to the outside through a duct. That is, as shown in FIG. 1, an air blower 2 for exhaust is provided in a main body box 1 having a box structure in which the lower surface of a rectangular parallelepiped is open, with a suction port being directed downward and an air outlet being directed to one side. A blower 2 is provided on one side of the main body 1
The exhaust air outlet 3 facing the air outlet of the air outlet is configured to be duct-connectable. On the lower surface of the main body box 1, a decorative panel 4 attached along the ceiling surface at a predetermined interval like a lid is mounted. Around the decorative panel 4, an indoor air suction port 5 formed by an interval between the decorative panel 4 and the main body box 1 is opened into the room. The blower 2 forms a ventilation flow from the indoor air inlet 5 to the exhaust outlet 3 in a ventilation path.

A speaker 6 is fitted and fixed to the decorative panel 4 in the vicinity of a central portion surrounded by the indoor air suction port 5 so as to be directed to the indoor side. Except for the front part of the speaker 6, it is housed on the back side of the decorative panel 4, and the back side is wrapped with an umbrella-shaped sound absorbing member 7 formed of a sound absorbing material such as sound absorbing plastic mounted on the back of the decorative panel 4. I have. The sound absorbing member 7 improves the acoustic characteristics behind the speaker 6, reduces the noise of the indoor air suction, and reduces the flow of the exhaust flow from the indoor air inlet 5 to the blower 2 in the main body box 1 by its shape. This is a configuration that performs a smooth airflow guiding function.

The duct ventilator having the above-described structure has a main body mounted in a space above a ceiling or the like, and an exhaust outlet 3 is connected to the outside of the room by a duct to perform a ventilation function. The decorative panel 4 is attached to the lower surface of the main body box 1 along the ceiling surface, and dirty indoor air is sucked from the indoor air suction port 5 formed by the lower surface of the main body box 1. The speaker 6 incorporated in the decorative panel 4 is connected to the output system of the audio device or the broadcasting device, and functions independently as an output unit of the audio device or the broadcasting device. The speaker 6 is not exposed, but has a ventilation path, is equipped with the blower 2, and is connected to a duct so that the speaker 6 itself does not easily resonate and has little reverberation.
Main box body 1 will have I構 formation is therefore constitute a speaker device was completed by a suitable speaker box speaker 6 with the mounting of the decorative panel 4, B
It plays an even need function without another set of speakers for the G M and guide broadcasting other notification means. The sound absorbing member 7 further improves the acoustic characteristics behind the speaker 6, reduces suction noise, and smoothes the flow of exhaust air from the indoor air inlet 5 to the blower 2 in the main body 1.

[0013]

According evident as the invention from the description of above embodiments according to the present invention, the ventilation passage is formed, the blower is built for ventilation, resonance hardly reverberation duct is also connected small I構 The main body box constituting the speaker box is a suitable speaker box for the speaker attached to the decorative panel.
Since it is not necessary to separately provided a speaker for the G M and guide broadcasting other notification means, without conflict speaker and the mounting location, also satisfaction to achieve a balanced room atmosphere of the simple harmony, which functions as a speaker device A duct ventilation device that can be obtained is obtained. In particular, the umbrella-shaped sound absorbing member provided behind the decorative panel has an advantage that the acoustic characteristics of the speaker are improved and the flow of the air current in the relevant portion is smooth.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a ventilation device for a duct showing one embodiment of the present invention.

FIG. 2 is a plan view showing a decorative panel of the duct ventilation device of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body box 2 Blower 3 Exhaust air outlet 4 Decorative panel 5 Indoor air inlet 6 Speaker 7 Sound absorbing member

Claims (1)

(57) [Claims] 1. An air passage, which is mounted in a space such as an underside of a ceiling, has an open end on the indoor side, and an air outlet formed on the other side so as to be connectable to a duct of the air passage. A main body box, a decorative panel mounted along a ceiling surface or the like, which is mounted in a lid shape on the indoor side surface of the main body box and forms an indoor air suction port for sucking room air between itself and the main body box. And a blower that forms an exhaust flow from the indoor air suction port of the decorative panel toward the outlet of the main body box is provided in one of the ventilation paths in the main body box, and near the center of the decorative panel. A speaker for a duct, characterized in that a speaker is installed in a functional state toward the indoor side, and the back of the speaker is wrapped in an umbrella-shaped sound absorbing member which also functions as a ventilation guide.