filter structure

Abstract

To provide a filter structure capable of being pasted by avoiding a part to which no filter layer needs to be pasted or a part which causes inconvenience when the filter layer is pasted.SOLUTION: A filter structure F1 has: a filter layer 1 which has air permeability and filters passing gases; an adhesive layer 10 formed of an adhesive on at least a part of one surface of the filter layer; and a sheet layer 20 which is layered on the surface of the adhesive layer and is releasable. An area 3 to be cut off is set at the filter layer. A boundary 4 showing a boundary position between the area to be cut off and an area not to be cut off of the filter layer is formed in at least one of the sheet layer and the filter layer. Cutting off the area to be cut off at a position shown by the boundary before being fitted to an object makes it possible to fit the filter structure to the object while avoiding a part where pasting to the object is not needed or a part where pasting causes inconvenience.SELECTED DRAWING: Figure 1A

Description

Technical Field

[0001] The present invention relates to a filter structure that is attached to objects such as air conditioners (hereinafter referred to as air conditioners), air purifiers, range hoods, vents, etc., and filters the passing gas.

Background Art

[0002] FIG. 10 is a rear view showing a conventional filter structure described in Patent Document 1. FIG. 11 shows a conventional air purifier described in Patent Document 2, where (A) is a perspective view showing the operating state, and (B) is a perspective view of the state where the front decorative panel is removed.

[0003] The conventional filter structure G shown in FIG. 10 has a sheet-like filter layer 100, an adhesive layer 101 formed of an adhesive on one surface of the filter layer 100, and a sheet layer (not shown) such as a release sheet laminated on the surface of the adhesive layer 101.

[0004] The filter layer 100 is made of a breathable material such as non-woven fabric. In this example, it is formed in a rectangular shape with the long side direction as the vertical and the short side direction as the horizontal.

[0005] The adhesive layer 101 has a contour adhesive layer 102 formed along the outer peripheral edge of the filter layer 100, a plurality of reinforcing adhesive layers 103 formed in the vertical and horizontal directions inside the contour adhesive layer 102 to form a grid pattern, and a heart-shaped design adhesive layer 104 formed in a region surrounded by the grid formed by the vertical and horizontal reinforcing adhesive layers 103.

[0006] When the filter structure G is attached to the air intake of an air purifier, the parts of the filter layer 100 through which air passes become dirty and discolored due to the accumulation of collected dust and other particles, whereas the areas where each adhesive layer 101 is formed have reduced airflow, making it less likely for dust and other particles to accumulate. As a result, with continued use, the shape of the adhesive layer 101 becomes visually more prominent as white light appears, and the heart shape of the design adhesive layer 104, in particular, becomes visible, thus serving as an indicator of when the filter structure G needs to be replaced.

[0007] In addition to rear-intake air purifiers, which have their air intake ports on the back, there are also front-intake models, such as the air purifier K shown in Figure 11. The front-intake air purifier K shown in the figure has an air intake port 122 on the front side of the main body 120, on which a sheet-like air purifying means 123 is arranged, and this air intake port 122 is covered by a front decorative panel 121. The upper part of the front decorative panel 121 is rotatably supported by an upper support part 124, and the lower part is supported so as to be movable in the front-rear direction by a lower support part 125 that is driven to move back and forth.

[0008] When using this air purifier K, the lower support section 125 is driven forward, and the lower part of the front decorative panel 121 is rotated forward using the upper support section 124 as an axis, thereby creating a gap between the main body section 120 and the front decorative panel 121, and allowing the air intake to communicate with the outside air. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] International Publication No. WO2018 / 043522 [Patent Document 2] Japanese Patent Publication No. 2017-32227 [Overview of the Initiative] [Problems that the invention aims to solve]

[0010] The conventional filter structure G shown in Figure 10 can be used as is for rear-intake type air purifiers, or it can be cut along the vertical or horizontal reinforcing adhesive layers to fit the dimensions of the air intake and then attached to the air intake.

[0011] However, in the case of a front-intake type air purifier K as shown in Figure 11, the upper support parts 124 and lower support parts 125 that support the four upper and lower points of the front decorative panel 121 are provided around the air intake port 122, and therefore interfere with the filter structure G. Therefore, when attaching this filter structure G to the air intake port 122 of the front-intake type air purifier K, the parts that interfere with the upper support parts 124 and lower support parts 125, that is, the region 110 including the four corners (the region enclosed by the dashed line in Figure 10), must be cut off.

[0012] However, with conventional filter structures G, the area to be removed is not clearly defined, which could lead to removing more material than necessary, preventing the air intake from being completely covered, or conversely, not removing enough material, resulting in interference with the air purifier's support and poor sealing around the air intake.

[0013] Furthermore, in the case of ceiling-mounted commercial air conditioners, sensors for detecting room temperature and human presence may be installed around the air intake located on the ceiling. If a filter structure is attached to such an air conditioner as is, part of it may cover the sensor and impair its function, so the part of the filter layer that may interfere with the sensor must be cut away. However, conventional filter structures have not clearly defined the area of ​​the filter layer that should be cut away in response to the sensor, which may lead to problems such as cutting away more than necessary, making it impossible to completely cover the air intake, or conversely, leaving a part that interferes with the sensor and impairs its function.

[0014] The present invention aims to provide a filter structure that can be attached to an object while avoiding areas where a filter layer does not need to be attached or where attaching a filter layer would cause problems. [Means for solving the problem]

[0015] To achieve the above objective, the invention described in claim 1 is a filter structure having a filter layer that is permeable and filters the gas passing through it, an adhesive layer formed of an adhesive on at least a part of one side of the filter layer, and a sheet layer laminated on the surface of the adhesive layer and peelable, wherein a region to be cut off is set in the filter layer, and a boundary portion indicating the boundary position between the region to be cut off and the uncut region of the filter layer is formed in at least one of the sheet layer and the filter layer. The filter layer has a rectangular shape, and the area to be excised is set at at least one corner of the filter layer, excluding the center. It is.

[0016] With this configuration, the effect 1 is obtained in which the boundary of at least one of the sheet layer or filter layer indicates the position where the filter structure is cut. The invention described in claim 2 is a filter structure having a filter layer that is permeable and filters the gas passing through it, an adhesive layer formed of an adhesive on at least a part of one side of the filter layer, and a sheet layer laminated on the surface of the adhesive layer and peelable, wherein a region to be cut is set in the filter layer, a boundary portion indicating the boundary position between the region to be cut and the non-cut region of the filter layer is formed in at least one of the sheet layer and the filter layer, the filter layer has a rectangular shape and further comprises a cuttable contour smaller than the overall contour of the filter layer, the region to be cut is set in at least one corner of the filter layer and also in at least one corner of the cuttable contour, and the region to be cut set in the corner of the filter layer and the region to be cut set in the corner of the cuttable contour overlap each other in at least a part. With this configuration, the effect 1 is obtained in which the boundary of at least one of the sheet layer or filter layer indicates the position where the filter structure is cut. The invention described in claim 3 is a filter structure having a filter layer that is permeable and filters the gas passing through it, an adhesive layer formed of an adhesive on at least a part of one side of the filter layer, and a sheet layer laminated on the surface of the adhesive layer and peelable, wherein a region to be cut is set in the filter layer, a boundary portion indicating the boundary position between the region to be cut and the region not to be cut is formed in at least one of the sheet layer and the filter layer, the filter layer has a rectangular shape, the region to be cut is set in at least one corner of the filter layer, a plurality of cutting lines parallel to the contour in one direction and a plurality of cutting lines parallel to the contour in another direction perpendicular thereto are formed in at least one of the sheet layer and the filter layer, and only at the four corners of at least one of the sheet layer and the filter layer, the cutting lines in one direction and the cutting lines in the other direction intersect to form a grid within the region to be cut. With this configuration, effect 1 is obtained, where the boundary of at least one of the sheet layer or filter layer indicates the position to be cut in the filter structure. Furthermore, effect 3 is obtained, where at least one of the four corners of the rectangular filter layer becomes the area to be cut.

[0017] Claim 4 The invention described is, Any of claims 1 to 3 In the configuration of the described invention, the boundary portion includes at least one selected from among lines, figures, characters, symbols, and other visual representations formed by printing, such as coloring within a certain range, markings formed by embossing or scribing, and cutting aids such as perforations or half-cuts.

[0018] With this configuration, since the boundary includes at least one of the following: a visual indicator, a marker, and a cutting aid, the function 2 is obtained, which allows the location of the boundary to be determined. [Effects of the Invention]

[0021] As described above, according to the invention described in claim 1, since operation 1 is obtained, the following effects can be achieved. When attaching to an object, by cutting the planned cutting area at the position indicated by the boundary portion, it is possible to attach the filter structure to the object while avoiding portions that do not need to be attached or portions that would cause problems if attached. Since the range of the planned cutting area can be confirmed by the boundary portion, the appropriate range of the filter layer can be easily cut based on the boundary portion. Also, it is possible to use the filter structure with the planned cutting area cut or without cutting the planned cutting area, so one type of filter structure can be used for multiple types of objects. Furthermore, when forming a boundary portion on the sheet layer, the same effect can be achieved even if no boundary portion is formed on the filter layer. The boundary portion formed on the sheet layer has a high degree of freedom in form, such as being colored or displaying explanatory words or symbols. Since the sheet layer is removed from the filter structure during use, forming such a boundary portion does not affect the design of the filter layer. According to the invention described in claim 2, since effect 1 is obtained, the following effects are achieved. When attaching to an object, by cutting the area to be cut at the position indicated by the boundary, it is possible to attach the filter structure to the object while avoiding parts that do not need to be attached to the object or parts that would cause problems if attached. Since the range of the area to be cut can be confirmed by the boundary, the appropriate range of the filter layer can be easily cut based on the boundary. Furthermore, since it is possible to use the filter structure with or without cutting the area to be cut, one type of filter structure can be used for multiple types of objects. Moreover, if a boundary is formed on the sheet layer, the same effect can be achieved even if a boundary is not formed on the filter layer. The boundary formed on the sheet layer offers greater freedom in form, such as by coloring it or displaying explanatory text or symbols. Since the sheet layer is removed from the filter structure when in use, forming such a boundary does not affect the design of the filter layer. According to the invention described in claim 3, since effect 1 is obtained, the following effects are achieved. When attaching to an object, by cutting the area to be cut at the position indicated by the boundary, it is possible to attach the filter structure to the object while avoiding parts that do not need to be attached to the object or parts that would cause problems if attached. Since the range of the area to be cut can be confirmed by the boundary, the appropriate range of the filter layer can be easily cut based on the boundary. Furthermore, since it is possible to use the filter structure with or without cutting the area to be cut, one type of filter structure can be used for multiple types of objects. Moreover, if a boundary is formed on the sheet layer, the same effect can be achieved even if a boundary is not formed on the filter layer. The boundary formed on the sheet layer offers greater freedom in form, such as by coloring or displaying explanatory text or symbols. Since the sheet layer is removed from the filter structure when in use, forming such a boundary does not affect the design of the filter layer. Furthermore, because effect 3 is obtained, even if there are parts of the object that do not need to be attached or parts where attachment would cause problems, by cutting off at least one part of the area to be cut, it becomes possible to properly attach the filter structure while avoiding those parts.

[0022] Claim 4 According to the invention described in claim Any of claims 1 to 3 In addition to the effects of the invention described in claim

Brief Description of the Drawings

[0024] [Figure 1A] It is a perspective view showing the filter structure according to the first embodiment of the present invention with the sheet layer separated. [Figure 1B] It is a front view of the filter structure shown in Fig. 1A. [Figure 2] It is a front view of the filter structure according to the second embodiment of the present invention. [Figure 3A]This is a perspective view showing the sheet layer separated to illustrate a filter structure according to a third embodiment of the present invention. [Figure 3B] Figure 3A is a rear view of the filter structure shown. [Figure 4] This is a rear view of a filter structure according to a fourth embodiment of the present invention. [Figure 5] This is a rear view of a filter structure according to a fifth embodiment of the present invention. [Figure 6] This is a rear view of a filter structure according to the sixth embodiment of the present invention. [Figure 7] This is a rear view showing an example of a cross-section of the filter structure shown in Figure 6. [Figure 8] Figure 6 is a rear view showing different cross-sections of the filter structure. [Figure 9] This is a rear view showing a part of a filter structure according to the seventh embodiment of the present invention. [Figure 10] This is a rear view showing a conventional filter structure described in Patent Document 1. [Figure 11] This shows a conventional air purifier as described in Patent Document 2, where (A) is a perspective view showing the unit in operation, and (B) is a perspective view with the front decorative panel removed. [Modes for carrying out the invention]

[0025] [First Embodiment] Figure 1A is a perspective view showing a filter structure according to the first embodiment of the present invention in a permanent configuration with the sheet layer separated, and Figure 1B is a front view of the filter structure shown in Figure 1A. In the following description, the side of the filter structure on which the sheet layer is laminated to the filter layer will be referred to as the back, and the opposite side will be referred to as the front.

[0026] Referring to these figures, the filter structure F1 comprises a sheet-like filter layer 1 that is permeable and filters the gas passing through it, an adhesive layer 10 formed of an adhesive on at least a portion of one side of the filter layer 1, and a sheet layer 20 that is laminated on the surface of the adhesive layer 10 and is peelable.

[0027] The filter layer 1 is composed of, for example, a nonwoven fabric, woven fabric, or knitted fabric, and is capable of both collecting dust and other particles and allowing gas to flow, while also possessing practical strength. Preferably, a nonwoven fabric composed of polyester such as polyethylene terephthalate (PET), a copolymer mainly composed of polypropylene or propylene, or synthetic resin fibers such as acrylic containing modacrylic can be used, but is not limited to these. There are also no limitations on the manufacturing method of the nonwoven fabric, and a nonwoven fabric manufactured by known methods such as the chemical bonding method or the thermal bonding method can be preferably used. Furthermore, the filter layer 1 may be treated to exhibit functions such as flame retardancy, antiviral properties, antibacterial properties, and antifungal properties.

[0028] The adhesive used to form the adhesive layer 10 is not particularly limited. For example, a two-component mixed adhesive containing a main component and a curing agent, such as a two-component polyurethane-based adhesive, or a hot-melt adhesive, such as an acrylic-based hot-melt adhesive, can be used. Furthermore, the adhesive may contain additives as needed, such as tackifiers to improve adhesion, UV absorbers, fillers, colorants, antioxidants, defoamers, light stabilizers, and various additives to suppress the decrease in adhesive strength at low temperatures and the presence of adhesive residue. A known method can be used to form the adhesive layer on the filter layer. For example, the adhesive can be applied directly to the filter layer, or it can be applied indirectly by first applying the adhesive to a peelable sheet layer (as described later) and then transferring the adhesive to the filter layer by bringing the sheet layer into contact with the filter layer, thereby forming a coating film, which is then dried (solidified). The application method for directly or indirectly applying the adhesive layer to the filter layer is not limited, but can be carried out by means of a roller, spray, brush, printing, etc. In other words, any known method can be employed, such as the roll coater method, comma coater method, die coater method, inkjet method, reverse coater method, silkscreen method, gravure coater method, etc. When applying directly, for example, an adhesive layer can be formed on the filter layer by spraying the adhesive onto one side of the filter layer, either entirely or partially. When applying indirectly, for example, an adhesive layer can be printed onto a peelable sheet layer coated with silicone using a roll, and then the adhesive layer side of this sheet layer can be brought into contact with the filter layer and pressed together with a roll to transfer the adhesive layer to the filter layer.

[0029] The sheet layer 20 can be made of, for example, a PET film with a silicone coating formed on at least one surface. By providing the sheet layer, the surface of the adhesive layer is protected, preventing the adhesive layer from sticking to objects other than the target object before the filter structure is used. Furthermore, it becomes possible to stack multiple filter structures, improving handling. When using the filter, the sheet layer is peeled off and the exposed adhesive layer is applied to the target object like a sticker. In addition to PET film, other materials such as cellophane, resin films other than PET, paper with a surface treatment such as a resin coating, and metal sheets can also be used as the material for the sheet layer 20.

[0030] The filter structure F1 in this example, shown in Figures 1A and 1B, is intended for use with a front-intake type air purifier. The filter layer 1 is rectangular, and if it is attached to the front-intake type air purifier as is, its four corners will interfere with the support members that support the front decorative panel provided around the air intake. Therefore, in this example, areas to be cut off 3 are set at the four corners of the filter layer 1, and boundary sections 4 indicating the boundary between the areas to be cut off 3 and the areas not to be cut off 5 are formed on the filter layer 1. These boundary sections 4 can be visually represented on the surface of the filter layer 1 by printing, perforations, or half-cuts, making it possible to visually grasp the outline of the areas to be cut off 3. The method of forming the boundary section 4 is not particularly limited and may be a visual representation such as lines, figures, letters, symbols, or coloring of a certain area formed by printing, a mark formed by embossing or scribing, or a cutting aid such as perforations or half-cuts.

[0031] With the filter structure F1 configured in this example, before attaching it to the front-intake type air purifier, which is the object to be installed, the area to be cut off 3 at the boundary 4 is cut off as needed. Next, the sheet layer 20 is peeled off, and the exposed adhesive layer 10 is aligned and attached to the air intake like a seal. This makes it possible to install the filter structure F1 while avoiding interference between the support members of the front decorative panel that protrude around the air intake and the filter layer 1.

[0032] Furthermore, the adhesive layer 10 may be formed by the spray method as described above, or it may be formed in a strip or grid pattern by pattern printing, and it may be formed with letters, symbols, figures, or even character designs. In addition, the adhesive layer 10 may be used to form a boundary.

[0033] [Second Embodiment] Figure 2 is a front view of a filter structure according to a second embodiment of the present invention.

[0034] The main components of the filter structure F2 in this example are the same as those in the first embodiment, and the differences will be explained here.

[0035] The filter structure F2 in this example is designed to accommodate cases where the size of the air intake port of the air purifier to which it is installed varies. Specifically, the filter structure F2 in this example includes a filter structure F2-A that corresponds to the overall contour 2a of the filter layer 1, a filter structure F2-B with a smaller contour 2b, and a filter structure F2-C with an even smaller contour 2c. It is configured so that one of these three different sized filter structures can be selected depending on the conditions. Here, each filter structure F2-A to F2-C is similar in shape.

[0036] In this example, the arrangement of each contour 2b and 2c is set such that each specific corner converges to a single vertex Q in the contour 2a of the entire filter layer 1. Furthermore, at the four corners of each contour 2a, 2b, and 2c, boundary sections 4a, 4b, and 4c indicating the extent of the areas to be removed 3a, 3b, and 3c are formed on the surface of the filter layer 1 by printing, perforation, or half-cutting. The method of forming the boundary sections 4a, 4b, and 4c is not particularly limited and may be visually represented by lines, figures, characters, symbols, or coloring of a certain area formed by printing, as in the first embodiment; or they may be marked by embossing or scribing; or they may be cut-assist sections such as perforations or half-cuts. In addition, the method of forming the contour 2b of filter structure F2-B and the contour 2c of F2-C can be the same as the method of forming the boundary sections 4a, 4b, and 4c.

[0037] With this configuration, if the size of the filter layer of the filter structure F2 in this example needs to be reduced to match the size of the air intake, the filter layer 1 can be cut along the contour 2b (or 2c) selected accordingly to create a filter structure F2-B (or F2-C) of the optimal size. Then, if necessary, the area 3b (or 3c) of the filter layer 1 of the cut-out filter structure F2-B (or F2-C) can be cut along the boundary 4b (or 4c) to avoid interference between the protrusions around the air intake and the filter layer 1, and the filter structure F2-B (or F2-C) can be attached to the air intake.

[0038] In this example, when cutting the filter layer to match the size of the air intake, it is only necessary to cut the filter layer linearly in two directions along two specific adjacent sides, thus enabling the creation of a filter structure of the desired size with fewer cuts. Furthermore, in this example, the boundary lines of the cut filter structure indicate the area to be removed, making it easy to visually determine the extent of the area to be removed and thus facilitating the removal work.

[0039] Furthermore, the adhesive layer 10 may be used to form the contour 2b of the filter structure F2-B and the contour 2c of F2-C.

[0040] [Third Embodiment] Figure 3A is a perspective view showing the filter structure according to a third embodiment of the present invention with the sheet layer separated, and Figure 3B is a rear view of the filter structure shown in Figure 3A, that is, it shows the sheet layer.

[0041] The main components of the filter structure F3 in this example are the same as those in the first embodiment, and the differences will be explained here.

[0042] Referring to these figures, the filter structure F3 in this example is intended for mounting on a front-intake type air purifier, and areas to be removed are set at the four corners of the filter layer 1. This example differs from the first embodiment in that a boundary portion 40 indicating the boundary position between the areas to be removed 30 and the areas not to be removed 31 is formed on the sheet layer 20, and no boundary portion indicating the boundary position between the areas to be removed and the areas not to be removed is formed on the filter layer 1.

[0043] This boundary 40 is formed, for example, on the surface of the sheet layer 20 by printing, perforation, or half-cutting, and visually displays the outline of the area 30 to be removed.

[0044] With the filter structure F3 configured in this example, before attaching it to the front-intake type air purifier, which is the object to be installed, the area to be cut off 30 at the boundary 40 is cut off as needed. Next, the sheet layer 20 is peeled off, and the exposed adhesive layer 10 is aligned and attached to the air intake like a seal. This makes it possible to install the filter structure F3 while avoiding interference with the support members of the front decorative panel that protrude around the air intake.

[0045] In this example, since a boundary portion 40 is formed on the sheet layer 20, there is no need to form a boundary portion on the filter layer 1 to indicate the boundary between the area to be cut and the area not to be cut. The boundary portion 40 formed on the sheet layer 20 can be colored or have explanatory text or symbols displayed, allowing for greater freedom in its form and ensuring that the extent of the area to be cut 30 is clearly understood. Furthermore, since the sheet layer 20 is removed from the filter structure F3 when in use, forming such a boundary portion does not affect the aesthetic appearance of the filter layer 1.

[0046] Incidentally, since the boundary portion 40 is formed on the sheet layer 20, it does not restrict the design or formation method of the adhesive layer 10, thus allowing for greater freedom in the shape and formation method of the adhesive layer 10. Therefore, in addition to being formed by the spray method as in this example, the adhesive layer 10 may be formed in the shape of strips or grids by pattern printing, and may also be formed with letters, symbols, figures, or even stylized character designs.

[0047] [Fourth Embodiment] Figure 4 is a rear view of a filter structure according to a fourth embodiment of the present invention.

[0048] The main components of the filter structure F4 in this example are the same as those in the third embodiment, and the differences will be explained here.

[0049] The filter structure F4 in this example is designed to accommodate cases where the size of the air intake port of the air purifier to which it is installed varies. Specifically, the filter structure F4 in this example includes a filter structure F4-A that corresponds to the overall contour 20a of the sheet layer 20, a filter structure F4-B with a smaller contour 20b, and a filter structure F4-C with an even smaller contour 20c. One of these three different sized filter structures can be selected depending on the conditions. Here, each filter structure F4-A to F4-C is similar in shape.

[0050] The contours 20b of filter structure F4-B and 20c of F4-C can be formed in the same manner as the boundary formation method of the third embodiment. Furthermore, in this example, the contours 20a to 20c are formed in a substantially concentric manner, with the centers of contours 20b and 20c overlapping the center P of the contour 20a of the entire sheet layer 20. In addition, boundary portions 40a, 40b, and 40c indicating the range of the areas to be cut 30a, 30b, and 30c are formed at the four corners of each of the contours 20a, 20b, and 20c, and these can be formed in the same manner as the boundary formation method of the third embodiment.

[0051] With this configuration, if the size of the filter layer of the filter structure F4 in this example needs to be reduced to match the size of the air intake, it can be cut along the contour 20b (or 20c) selected accordingly to create a filter structure F4-B (or F4-C) of the optimal size. Then, if necessary, the area 30b (or 30c) of the filter layer of the cut-out filter structure can be cut along the boundary 40b (or 40c) to avoid interference between the protrusions around the air intake and the filter layer, allowing the filter structure F4-B (or F4-C) to be attached to the air intake.

[0052] [Fifth Embodiment] Figure 5 is a rear view of a filter structure according to a fifth embodiment of the present invention.

[0053] The main components of the filter structure F5 in this example are the same as those in the third embodiment, and the differences will be explained here.

[0054] In this example, the area 30 to be removed in the sheet layer 20 is shown spatially by coloring, shading, hatching, etc. Therefore, in this example, the contour of the spatially shown portion indicating the area to be removed 30 becomes the boundary portion 41.

[0055] In this example, the area 30 to be resected is displayed spatially, making it easy to visually grasp its extent.

[0056] [Sixth Embodiment] Figure 6 is a rear view of a filter structure according to the sixth embodiment of the present invention, and Figure 7 is a rear view showing a cross-section example of the filter structure shown in Figure 6.

[0057] The main components of the filter structure F6 in this example are the same as those in the third embodiment, and the differences will be explained here.

[0058] The filter structure F6 in this example is intended for use with ceiling-mounted commercial air conditioners. Many air conditioners of this type have a panel facing the room with a roughly square outline, a roughly square air intake in the center, and air outlets positioned on the outside of each of the four sides of the air intake. The filter structure F6 in this example is formed in a square shape to match the shape of the air intake of such an air conditioner.

[0059] In this example, the filter structure F6 has multiple cutting lines formed on the sheet layer 20 for cutting the filter layer 1. Specifically, multiple cutting lines 51-56 parallel to the contour 20x (horizontal direction) in one direction of the square sheet layer 20, and multiple cutting lines 61-66 parallel to the contour 20y (vertical direction) in another direction perpendicular to these, are formed on the sheet layer 20 by printing, perforation, half-cutting, etc., in the same manner as the boundary formation method of the third embodiment. The area including the four corners of the sheet layer 20, where the cutting lines 51-56 and cutting lines 61-66 intersect to form a grid, is set as the area to be cut S.

[0060] The filter structure F6 in this example can accommodate air conditioners with different intake port sizes by forming the above-described cutting lines in the sheet layer 20. Referring to Figures 7(A) and 7(B), for example, the filter layer 1 is cut along one horizontal cutting line 51 and one vertical cutting line 61 to remove the L-shaped portions e1 and e2. This makes it possible to obtain filter structures f1 and f2 that are slightly smaller than the original filter structure F6, thus making them suitable for air conditioners with smaller intake ports.

[0061] Furthermore, the filter structure F6 in this example has multiple horizontal and vertical cutting lines, and its size can be changed in various ways by cutting along the cutting lines selected as appropriate. Therefore, this example provides a filter structure that can be adapted to air intake ports of various sizes.

[0062] In this example, the shape of the filter layer after cutting is set to be approximately square, similar to the original filter layer. This configuration makes it easy to apply to objects that are basically square in shape, even if they have different dimensions, such as commercial air conditioners.

[0063] Incidentally, in ceiling-mounted commercial air conditioners, sensors that detect human bodies and temperature may be placed around the air intake, and depending on their location, the sensors may be covered by the filter layer when the filter structure is attached. Therefore, in this example, a planned removal area S was set to remove the part of the filter layer that may correspond to the sensor. Specifically, each of the four corners of the nearly square filter layer 1 was designated as a planned removal area S, and at least one of these areas was selected. Furthermore, within this selected planned removal area S, a portion of it can be cut as needed according to the size of the object to be excluded. In other words, the grid-like cutting lines within the planned removal area S function as boundaries.

[0064] For example, in the example in Figure 6, multiple cutting lines are formed in a grid pattern within the area S to be removed, and these grid-like cutting lines divide the area S into nine sections. In the example in Figure 7(A), the filter structure f1, after being cut along the cutting lines 51 and 61, is configured to remove a portion S1 of one section within the area S to be removed, which is divided by the cutting lines 56 and 66. In this case, a portion of the cutting lines 56 and 66 forms a boundary.

[0065] Furthermore, in the example of Figure 7(B), in the filter structure f2 after cutting along the cutting lines 51 and 61, the area demarcated by the cutting lines 52 and 62 in the newly formed corners along the cutting lines 51 and 61 after cutting is designated as a newly removed portion S1. In this case, a portion of the cutting lines 52 and 62 forms a boundary.

[0066] Furthermore, the portion to be actually removed within the planned removal area S can be changed as appropriate; for example, two or more cells may be removed, or all nine cells may be deleted. In addition, two or more portions may be removed within the planned removal area S, and multiple planned removal areas S may be selected as targets for removal from the four planned removal areas S.

[0067] In this example, by forming a grid of cutting lines within the area S to be excised, it becomes easier to determine the excision range according to the object to be excluded.

[0068] Figure 8 is a rear view showing different cross-sections of the filter structure shown in Figure 6.

[0069] The cutting example shown in Figure 7 above involves cutting the filter structure in an L-shape along cutting lines that follow two adjacent contours 20x and 20y of the sheet layer 20's contour. However, the method is not limited to this; the structure may be cut in a straight line along a cutting line that follows only one contour, or in a U-shape along cutting lines that follow three contours, or even cut along a cutting line that follows the entire circumference of the contour to create a square.

[0070] Specifically, as shown in Figure 8(A), the filter structure F6 may be cut along a single cutting line 51 to separate the linear portion e3 and obtain a filter structure f3 with a shorter vertical length. Alternatively, as shown in Figure 8(B), the filter structure F6 may be cut along three cutting lines 51, 61, and 66 along three sides of the contour to separate the U-shaped portion e4 and obtain a smaller filter structure f4. Furthermore, as shown in Figure 8(C), the filter structure F6 may be cut along four cutting lines 51, 56, 61, and 66 along the entire circumference of the contour to separate the square-shaped portion e5 and obtain a filter structure f5 cut out in a square shape.

[0071] Furthermore, in each embodiment shown in Figures 8(A) to (C), in the filter structures f3 to f5 formed after cutting, a portion S1 of the filter structure may be removed using the cutting line to avoid interference with objects to be excluded, such as sensors.

[0072] Furthermore, in the example of Figure 8(A), the filter structure F6 may also be cut in a straight line along any one of the cutting lines parallel to the cutting line 51 to obtain a smaller filter structure. In the examples of Figure 8(B) and (C), the filter structure may be cut along an inner cutting line to obtain an even smaller filter structure. By adopting these embodiments, filter structures of various sizes after cutting can be obtained.

[0073] [Seventh Embodiment] Figure 9 is a rear view showing a part of the filter structure according to the seventh embodiment of the present invention.

[0074] The main components of the filter structure F7 in this example are the same as those in the third embodiment, and the differences will be explained here.

[0075] In the above-described embodiment, the boundary was formed on the sheet layer 20 by printing, perforations, or half-cuts. However, in this example, the filter structure F7 indicates the boundary 40 of the area to be removed S with markers 70 placed at regular intervals on the sheet layer 20. These markers 70 may be formed by printing, but they may also be formed by embossing or scribing on the surface of the sheet layer 20. The shape of the markers 70 is not particularly limited and can be, for example, a cross shape, a circle, a square, a triangle, a star shape, etc.

[0076] By placing markers 70 at regular intervals on the sheet layer 20, the filter structure F7 can be cut at predetermined positions using these markers as a reference.

[0077] In the second embodiment described above, two types of contours of different sizes were displayed on the filter layer, but it is also possible to display three or more types of contours of different sizes.

[0078] Furthermore, the contours and boundaries formed on the filter layer in the second embodiment described above may be formed on the sheet layer instead of the filter layer.

[0079] Conversely, the contours and boundaries formed on the sheet layer in the fourth embodiment, the planar markings formed on the sheet layer in the fifth embodiment, the cutting lines formed on the sheet layer in the sixth embodiment, and the markings formed on the sheet layer in the seventh embodiment may be formed on the filter layer instead of the sheet layer.

[0080] Furthermore, the boundary portions shown in these embodiments may be provided in both the filter layer and the sheet layer. In this case, the markings may be the same for both the filter layer and the sheet layer, or different formation methods may be employed.

[0081] Furthermore, in each of the embodiments described above, the boundary portion and the like were formed in either the filter layer or the sheet layer, but they may also be formed in both the filter layer and the sheet layer.

[0082] Furthermore, in each of the embodiments described above, the area to be excised is set to a rectangle, but it may be set to a shape other than that.

[0083] Furthermore, although the areas to be cut were set at the corners in the above embodiments, the system is not limited to this. For example, if there are parts on the inner side of the mounting object that interfere with the filter layer, or if there are parts that are not suitable to be covered by the filter layer because sensors or the like are installed there, the areas to be cut may be set inside the filter layer to match these parts. In this case, the boundary may be formed with a cutting aid such as a perforation to make it easier to cut out the areas to be cut.

[0084] Furthermore, although the filter structure was rectangular or square in the above embodiments, various shapes such as polygons, circles, and ellipses may be used. In this case, for example, a circular filter structure has no corners, so a cutting area can be set at the location corresponding to the interference part of the mounting target, and a boundary section indicating that range can be formed.

[0085] Furthermore, in each of the above embodiments, the shape of the filter layer after cutting was set to be similar to the original filter layer, but the shape after cutting does not necessarily have to be similar.

[0086] Furthermore, in each of the first to fifth embodiments described above, all four areas to be excised are made excisable, but it is also possible to set only one area to be excised.

[0087] Furthermore, in each of the above embodiments, the filter structure may use the entire filter layer without removing the area to be removed.

[0088] Furthermore, in the sheet layers of each of the above embodiments, if the product is large, such as a filter structure for a commercial air conditioner, it may include two divided sheet layers separated at an intermediate position in the filter layer. With this configuration, when installing the filter structure, the installation work can be made easier by peeling off one of the two divided sheet layers to expose half of the entire adhesive layer, attaching this to the air intake of the air conditioner, and then peeling off the other divided sheet layer and attaching the remaining half to the rest of the air intake. The back sheet layer may be divided into three or more parts, may be divided unequally, or may be divided into irregular shapes.

[0089] Furthermore, the adhesive layer in each of the above embodiments may include a design adhesive layer containing letters, symbols, figures, patterns, etc. Providing a design adhesive layer contributes to the attachment of the filter structure to the object, and also makes it possible to provide a replacement indicator function that indicates when the filter structure needs to be replaced. Alternatively, the replacement indicator function may be provided by pre-attaching a film that is non-permeable or has lower breathability than the filter layer by heat welding it to the filter layer.

[0090] Furthermore, the filter structure of the present invention can be used not only in air purifiers and household and commercial air conditioners, but also in household or commercial equipment such as kitchen range hoods and ventilation fans, as well as in vents installed indoors and outdoors. [Explanation of Symbols]

[0091] F1~F7...Filter Structures G... Filter structure (conventional) K... Air purifier 1…Filter layer 2a~2c... Outline 3…Area to be removed 3a~3c... Areas to be resected 4…Boundary 4a~4c…boundary part 5…Non-excision area 10…Adhesive 20…Sheet layer 20a~20c...Contour 20x…Contour (horizontal direction) 20y…Outline (vertical direction) 30…Area to be removed 30a~30c... Area to be resected 40, 41... Boundary 40a~40c…boundary part 51~56…cutting line 61~66…cutting line 70... Landmark In each figure, the same reference numeral indicates the same or corresponding part.

Claims

1. A filter structure comprising a filter layer that is permeable and filters passing gases, an adhesive layer formed of an adhesive on at least a portion of one side of the filter layer, and a peelable sheet layer laminated on the surface of the adhesive layer, The area to be removed is set in the filter layer. A boundary portion is formed in at least one of the sheet layer and the filter layer to indicate the boundary position between the area to be cut and the area not to be cut in the filter layer. The filter layer has a rectangular shape, The area to be excised is set in at least one corner of the filter layer, excluding the central part. Filter structure.

2. A filter structure comprising a filter layer that is permeable and filters passing gases, an adhesive layer formed of an adhesive on at least a portion of one side of the filter layer, and a peelable sheet layer laminated on the surface of the adhesive layer, The area to be removed is set in the filter layer. A boundary portion is formed in at least one of the sheet layer and the filter layer to indicate the boundary position between the area to be cut and the area not to be cut in the filter layer. The filter layer has a rectangular shape, The filter layer further comprises a cuttable contour smaller than the overall contour of the filter layer, The area to be excised is set not only at at least one corner of the filter layer, but also at at least one corner of the cuttable contour. The area to be cut, set at the corner of the filter layer, and the area to be cut, set at the corner of the cuttable contour, overlap in at least a portion of each other. Filter structure.

3. A filter structure comprising a filter layer that is permeable and filters passing gases, an adhesive layer formed of an adhesive on at least a portion of one side of the filter layer, and a peelable sheet layer laminated on the surface of the adhesive layer, The area to be removed is set in the filter layer. A boundary portion is formed in at least one of the sheet layer and the filter layer to indicate the boundary position between the area to be cut and the area not to be cut in the filter layer. The filter layer has a rectangular shape, The area to be excised is set at at least one corner of the filter layer, At least one of the sheet layer and the filter layer is formed with a plurality of cutting lines parallel to a contour in one direction and a plurality of cutting lines parallel to a contour in another direction perpendicular to the first. At least one of the four corners of the sheet layer and the filter layer, within the area to be cut, the cutting line in one direction and the cutting line in the other direction intersect to form a grid. Filter structure.

4. The aforementioned boundary portion is Visual representations such as lines, shapes, letters, symbols, and colored areas formed by printing. Marks formed by embossing or scribing, and Cutting aids such as perforations and half-cuts, Includes at least one selected from the following: A filter structure according to any one of claims 1 to 3.

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