JPH0647057Y2 - Eaves eaves ceiling panel - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Use) The present invention relates to a ventilation eaves ceiling panel for ventilating hot air in the attic by introducing outside air into the attic.

(Prior Art) Conventionally, as a ventilation eave ceiling plate, one having a plurality of ventilation holes provided so as to penetrate through a thin plate-shaped body in the front-back direction is known.

(Problems to be solved by the invention) However, in the conventional ventilation eaves ceiling plate, if the diameter of the ventilation hole is small, a sufficient ventilation amount cannot be secured, and conversely, in order to secure a sufficient ventilation amount. When the diameter of the ventilation hole is increased, there has been a problem that raindrops during a storm and sparks from a nearby fire blow into the back of the eaves through the ventilation hole.

(Effects of the Invention) The present invention has been made in view of the above points to improve the above-described ventilation eaves ceiling plate, and raindrops and sparks can be blown into the back of the ceiling while ensuring sufficient ventilation. Aims to provide no eaves ceiling panels for ventilation.

(Means for Solving the Problem) In order to achieve the above object, the present invention is to prevent the progress of raindrops and sparks inside the ventilation hole of the eaves ceiling plate for ventilation. Targeting a ventilation ceiling plate that is attached to the eaves of a building to ventilate the attic, targeting a rectangular plate-shaped body made of extrusion-molded noncombustible material or semi-incombustible material, and extruded into the plate-shaped body A plurality of elongated hollow portions formed by molding so as to extend parallel to each other and through the plate-shaped body, and the front surface portion and the back surface portion of the plate-shaped body are displaced from each other in the extending direction of the hollow portions. And a front surface side ventilation hole and a back surface side ventilation hole that are communicated with each other through the hollow portion.

(Function) The outside air that has entered the hollow part from the front side ventilation hole travels in a substantially horizontal direction along the hollow part, and passes through the back of the ceiling from the back side ventilation hole that is offset in the direction in which the front side ventilation hole and the hollow part extend. Enter the attic and ventilate the hot air in the attic. During a storm or a fire in the vicinity, raindrops and sparks enter the hollow part from the surface side ventilation hole with the outside air, but since the hollow part is elongated, it collides with the upper and lower bottom surfaces of the hollow part or the partition walls on both sides, and it is more hollow. It stays in the hollow part without going to the back of the part. In this case, since the plate-shaped body is made of non-combustible material or semi-combustible material,
There is no risk of fire if the sparks stay inside the hollow.

In addition, the front-side vent holes and the back-side vent holes are offset from each other in the direction in which the hollow part extends, and the ceiling base is not exposed on the back side of the ceiling plate. Since each can be made larger, the attic can be sufficiently ventilated.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an eaves ceiling plate A for ventilation according to an embodiment of the present invention, and reference numeral 1 is a rectangular plate-like body that constitutes the eaves ceiling plate A for ventilation.

The plate-like body 1 is manufactured by extruding a cement material mixed with fibers or a cement material mixed with lightweight aggregate, and a layer of a waterproof coating film 11 is formed on the surface (the lower surface in FIG. 1). There is. Of the plate-shaped body 1, the front surface material 12, the back surface material 13 and the intermediate material 14 connecting them may be either the same material or a combination of different materials, but a quasi non-combustible material that can prevent fire spread. It is formed of a material having the above performance. The semi-incombustible material is, for example, a cement material mixed with wood fibers or synthetic fibers, and the non-combustible material is preferably an inorganic foam or a cement material mixed with inorganic fibers from the viewpoint of fire protection and water resistance.

A ridge 15 for joining is provided on one side of the plate-like body 1 and a groove 16 for joining is provided on the other side thereof, which is used for joining a plurality of plate-like bodies 1. In addition, the plate-like body 1 has a plurality of rows of elongated hollow portions 2 each having a square hole-shaped or round hole-shaped hollow hole that is partitioned from each other by a partition wall and penetrates in the extrusion direction inside the plate-shaped body 1. The part 2 is formed at the same time when the plate 1 is extruded.

A hollow portion 2 is provided on each of the front surface portion and the back surface portion of the plate-shaped body 1.
The front surface side ventilation hole 3A and the back surface side ventilation hole 3B are formed so as to be offset from each other in the extending direction. As a result, the front surface side ventilation hole 3A and the back surface side ventilation hole 3B communicate with each other through the hollow portion 2 and are completely offset so that there is no overlapping portion in the front-back direction.

FIG. 2 shows a sectional structure of the ventilation eaves ceiling board A according to the present embodiment attached to a house, and arrows indicate the flow direction of outside air. The outside air that has entered the hollow portion 2 from the front surface side ventilation hole 3A moves substantially horizontally in the hollow portion 2 toward the ridge, then proceeds from the rear surface side ventilation hole 3B to the ceiling space B, and passes through the attic C to exit from the ridge. Exit to the outside of the house. In this case, raindrops and sparks may enter from the front side ventilation holes 3A together with the outside air during a storm or a nearby fire, but the raindrops and the like hit the upper and lower bottom surfaces or partition walls of the hollow portion 2 and adhere to them. Therefore, do not proceed from the back side ventilation hole 3B to the ceiling back B.

The distance between the front surface side ventilation holes 3A and the back surface side ventilation holes 3B is related to the diameters of the front surface side and back surface side ventilation holes 3A, 3B, but generally it is 10 cm or more away from rainwater. It is preferable in order to prevent the invasion of the ceiling back space B and the like.

Also, the diameter of the front side ventilation holes 3A and the diameter of the back side ventilation holes 3B are
Although they may be the same or different, if the diameter of the front air holes 3A is increased, the outside air can be sufficiently taken in. In this case, even if the diameter of the front air vent 3A is large, the front air vent
Since 3A and the back surface side ventilation hole 3B are displaced from each other, the ceiling back surface B cannot be seen from the front surface side.

Further, it is preferable that both the front surface side and the rear surface side ventilation holes 3A and 3B are elongated holes and are provided so as to straddle a plurality of adjacent hollow portions 2 because the ventilation amount increases.

FIG. 3 shows a modified example of the ventilation ceiling plate A of the present invention.
The figure shows a state in which this ventilation ceiling plate A is attached to a house. In this ventilation ceiling plate A, the front surface side ventilation holes 3A are concentratedly arranged on the eaves side, and the back surface side ventilation holes 3B are concentratedly arranged on the ridge side. In this way, the outside air flows into the portion of the back of the ceiling B near the back of the cabin C, so that the hot air of the back of the cabin C can be more smoothly ventilated.

FIG. 5 shows an enlarged sectional structure of a part of another modification of the ventilation ceiling board A, and FIG. 6 shows a state in which the ventilation ceiling board A is attached to a house. This ventilation ceiling plate A is an inclined hole, and its upper part is inclined so that its upper part is close to the ridge side and its lower part is close to the eaves side. By doing this, the outside air is in the back of the cabin C.
Because it is forced to flow in the direction of, the hot air in the attic can be ventilated more smoothly.

FIG. 7 shows an eaves ceiling plate A according to another embodiment of the present invention, in which the hollow portion 2 (hollow hole) is provided.
Penetrates in the long side direction of the plate-shaped body 1. As shown in FIG. 8, the ceiling plate A for the eaves is attached so that the hollow portions 2 are arranged side by side along the eaves. You can guide it and let it flow evenly into the attic.

(Effects of the Invention) As described above, according to the ventilation eaves ceiling plate of the present invention, the hollow portion is elongated and the front surface side ventilation hole and the back surface side ventilation hole are deviated in the extending direction of the hollow portion. The ventilation holes on the front side or the back side can be increased to ensure sufficient ventilation in the attic, and even if raindrops or sparks enter the hollow part from the front side ventilation holes during a storm or a nearby fire, Since the sparks stay in the hollow part and do not enter the ceiling,
Sufficient ventilation can be secured in the attic while preventing raindrops and sparks from blowing into the ceiling.

Further, since the plate-like body forming the ventilation eaves ceiling plate according to the present invention is formed of a noncombustible material or a semi-incombustible material, there is no risk of fire even if the sparks stay in the hollow portion.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a ventilation eaves ceiling plate according to an embodiment of the present invention, FIG. 2 is a sectional view showing a state where the ventilation eaves ceiling plate is attached to a house, and FIG. FIG. 4 is a plan view of a ventilation eaves ceiling board according to a modification of FIG. 4, FIG. 4 is a sectional view showing a state where the ventilation eaves ceiling board shown in FIG. 3 is attached to a house, and FIG. 5 is another modification of the present invention. FIG. 6 is a partially enlarged sectional view of a ventilation eaves ceiling plate according to FIG. 6, FIG. 6 is a sectional view showing a state where the ventilation eaves ceiling plate is attached to a house, and FIG. 7 is another embodiment of the present invention. FIG. 8 is a plan view of the ventilation eaves ceiling plate, and FIG. 8 is a sectional view showing a state in which the ventilation eaves ceiling plate shown in FIG. 7 is attached to a house. A ... Ventilation ceiling plate, 1 ... Plate-like body, 2 ... Hollow part, 3A ... Front side ventilation hole, 3B ... Back side ventilation hole.

Claims (1)

[Scope of utility model registration request] 1. A ventilation eaves ceiling plate that is attached to the eaves of a building to ventilate the attic, and has a rectangular plate-like body made of an extruded noncombustible material or a semi-incombustible material, A plurality of elongated hollow portions formed in the plate-shaped body by extrusion molding so as to extend in parallel to each other and through the plate-shaped body, and the hollow portions extend to the front surface portion and the back surface portion of the plate-shaped body, respectively. A ventilation eaves ceiling plate comprising front surface side ventilation holes and back surface side ventilation holes which are formed to be displaced from each other in the direction and communicate with each other through the hollow portion.