JP2012170340A - Insect repellent ventilation filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insect repellent ventilation filter capable of being very easily attached to/detached from a vent hole without impairing the ventilation capability.SOLUTION: The insect repellent ventilation filter is formed in the shape of a disk (disk-shaped, oblong board-shaped, or polygonal board-shaped) having approximately the same size and contour as the opening area and contour of a target vent hole for attaching the filter, and is made of a flexible material configured into a net structure having a dimple 6b in the central area which is thinner tthan the wall thickness tof a flange 6a formed in the outer peripheral side edge area. Specifically, a plastic net base material formed in the shape of a bottomed cylinder is wound and layered outward from an open end side to form a flange 9 in the outer peripheral side edge area, so that the bottom part of the net base material corresponds to the dimple 6b of the filter 6. By heating and fusing the central are, the tucked-in open end is fixed not to be unwound.

Description

  The present invention relates to an insect-proof ventilation filter that is used, for example, by being attached to a vent hole or the like in a sarcophagus ostium.

  Generally, the inside of the ossuary chamber is highly humid due to dew condensation, etc., air stagnation, and a strange odor is generated due to the propagation of various germs. In addition, it becomes a hotbed where insects who like moisture such as geji and centipede are generated. Therefore, in the conventional ossuary room, a method of providing a vent hole with the outside to prevent the occurrence of mold and bad odor, or installing a dehumidifying agent in the ossuary room is adopted.

  In particular, there are graveyards with ossuary rooms equipped with intake and exhaust ducts equipped with fan units that are driven by the supply of power from solar cells and commercial power sources in order to forcibly ventilate and dehumidify the ossuary rooms. It has been proposed (see, for example, Patent Document 1 and Patent Document 2). Since such an ossuary chamber is provided with a vent hole communicating with the outside, the above-mentioned insects and the like enter the ossuary chamber from this vent hole.

  Therefore, a filter is attached to the vent so that insects, foreign matter, moisture, plant seeds, and the like do not enter the osteoid chamber from the outside through the vent. As such a filter, for example, Patent Document 3 discloses a gas meter with a built-in pressure sensor having a ventilation structure in which a filter is attached to a ventilation hole, and a sheet having air permeability and moisture resistance is disclosed as a meter. It is attached to the vent hole by a plate that is screwed to the case. In the gas meter with a built-in pressure sensor disclosed in Patent Document 4, a net for preventing insect penetration is attached to the inside of a conical cylindrical socket, and the socket is inserted into a vent hole to prevent entry of foreign matter. In the microcomputer gas meter disclosed in Patent Document 5, a lead wire insertion portion and a fine ventilation hole are formed in the bush, and the bush is attached to the insertion hole, thereby preventing foreign matter from entering.

Japanese Patent Laid-Open No. 9-49347 Japanese Patent No. 2631834 Japanese Patent No. 3662343 JP 2001-215142 A JP-A-8-327425

  However, in a structure that uses a fixture such as a plate or a screw for attaching the filter, the number of parts increases and the installation work becomes complicated. Moreover, in the structure using the socket and bush for attaching a filter, the cost for manufacturing a dedicated component increases. In view of the above-described conventional problems, an object of the present invention is to provide an insect-proof ventilation filter that can be attached / detached to / from a ventilation hole without deteriorating ventilation performance.

  Therefore, the insect-proof ventilation filter of the present invention is formed in a disk shape (disk shape, elliptical disk shape or polygonal disk shape) having substantially the same size and outer shape as the opening area and outer shape of the ventilation hole to be attached. The first feature is that it is made of a flexible material having a net structure having dimples (dents) thinner than the thickness of the collar portion formed in the outer peripheral edge region at least in the central region. Further, a second feature is that a cylindrical net having one end closed is wound outwardly to form a flange portion of the outer peripheral edge region.

The present invention has the following excellent effects.
(1) The filter can be attached to the vent by one-touch operation. Therefore, the attachment is simple, the fixing bracket for attaching the filter and the like are unnecessary, and the cost can be reduced.
(2) Further, since the filter can be elastically deformed, the applied stress can be reduced or buffered by the deformation of the filter, and adverse effects such as an excessive force acting and damage can be prevented.
(3) It can be applied to any vent for introducing outside air.

(A) which shows the filter for insect-proof ventilation based on this invention is a perspective view, (b) is the sectional view on the AA line of (a). It is a perspective view which shows an example of the manufacturing method of a filter. It is a front view which shows typically the state which attached the filter to the vent hole of the osteotomy room. It is a perspective view which shows the state which attaches a filter to the vent hole of an ossuary chamber.

  Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings.

As shown in FIG. 1, the insect repellent ventilation filter 6 according to the present invention is a disk-shaped (disk-shaped, elliptical disk-shaped or polygonal disk) having substantially the same size and outer shape as the opening area and outer shape of a vent to be mounted is formed into Jo), was the net structure having at least a central region thinner t ₂ dimple (dent than the thickness t ₁ of the outer peripheral edge region which is formed in the flange portion 6a) 6b flexible Consists of materials. Specifically, for example, as shown in FIG. 2, a bottomed cylindrical net base made of plastic is wound outward from the open end side to form a collar portion 9 in the outer peripheral edge region. As a result, the bottom portion of the net base material corresponds to the dimple 6b of the filter 6. Therefore, the center portion can be manufactured by heat-sealing and fixing so that the opened open end portion cannot be unwound.

  3 to 4 show a mausoleum having a vent hole to which the insect repellent ventilation filter 6 according to the present invention is attached. This mausoleum is composed of an ossuary chamber 5 integrally formed in the shape of a hollow box from the basement and a tombstone 1 placed on the ossuary chamber 5. Here, the left and right walls of the ossuary chamber 5 are respectively provided with an intake port 5a and an exhaust port 5b communicating with the outside. On the intake port 5a side, for example, a tank storage box 4 in which a medicine storage tank 3 containing a pest repellent that is transpirated in the ossuary 5 is stored and arranged integrally with the tombstone 1 is formed. An exhaust hood 2 is attached to the mouth 5b. Then, the filter 6 is fitted into the intake port 5a while being bent. The filter 6 is urged and fixed to the intake port 5a by its own elastic force.

  By attaching the filter 6 to the intake port 5a in this way, it is possible to prevent intrusion of foreign matter such as dust and plant seeds. In particular, insect invasion can be reliably prevented by the ridge portion 6a of the filter 6. That is, the ridge part 6a of the filter 6 has a considerable thickness, and the net base material is laminated in layers, so that insects cannot easily pass through or break. Further, natural ventilation is not hindered by the thin-walled dimples (dents) 6b, and transpiration of the pest repellent or the like into the ossuary chamber 5 can be performed without any problem. That is, the filter 6 of the present invention has a mesh structure composed of a thick part and a thin part. Therefore, the thick part can maintain rigidity and elasticity, is strong against external force, and is good in a thin part. Can be obtained. Moreover, if it is the size suitable for the vent which should be mounted | worn by the flexibility, it can be attached without using an exclusive component. Therefore, the filter 6 can be replaced easily and economically.

  As mentioned above, although the Example of this invention was shown, this invention is not limited to the said Example, A various change is possible in the range which does not deviate from the summary of this invention. For example, in the above embodiment, the filter 6 has a disk shape, but the outer shape thereof may be an ellipse, a rectangle, or a polygon depending on the vent to be mounted. The material is not particularly limited, and may be fibrous or sponge-like, but is preferably flexible.

DESCRIPTION OF SYMBOLS 1 Tombstone 2 Exhaust hood 3 Drug storage tank 4 Tank storage box 4a Box opening / closing door 5 Ostony compartment 5a Intake port 5b Exhaust port 6 Filter 6a Filter outer periphery 6b Filter dimple

Claims (2)

It is formed in a disk shape having the same size and outline as the opening area and outline of the vent to be mounted, and at least thinner than the thickness of the collar part formed in the outer peripheral edge area in the central area. An insect repellent filter comprising a flexible material having a net structure having dimples. A second feature is that a cylindrical net having one end closed is wound outwardly to form a flange portion of the outer peripheral edge region.

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