WO2010098048A1

WO2010098048A1 - Ventilation fan

Info

Publication number: WO2010098048A1
Application number: PCT/JP2010/001073
Authority: WO
Inventors: 長谷川徳彦; 平野広諭; 坪佐大輔; 王懐鵬
Original assignee: パナソニック株式会社
Priority date: 2009-02-25
Filing date: 2010-02-19
Publication date: 2010-09-02
Also published as: JPWO2010098048A1

Abstract

The disclosed ventilation fan is equipped with a main body frame that is installed on the wall of a room and that holds a motor and an orifice, a fan that is affixed to the motor, and a filter and an oil cup that are attached to the orifice. A concave section or a convex section is provided on any surface of the orifice, and a fitting section is provided on the filter and the oil cup for fitting to the concave section or the convex section. A ventilation fan that can be cleaned easily by simply removing the filter from the orifice without requiring the use of tools can thus be realized.

Description

Ventilation fan

The present invention relates to a ventilation fan with a filter that is installed on a wall surface of a kitchen and attaches and removes oily smoke generated during cooking.

Conventionally, a ventilation fan equipped with a filter has a structure in which the filter is fitted to the front surface of the orifice fixed to the main body frame or attached by screwing (for example, see Patent Document 1).

In such a conventional ventilation fan, when removing the filter or oil cup from the orifice, it is necessary to remove the fitting portion or remove the screw that is connected. In the case of fitting, removal may be difficult due to the fixing of the fitting portion due to oil generated during cooking. In addition, in the case of screwing, it takes time because it is necessary to unscrew the ventilation fan installed at a high place. As a result, there was a problem that it was difficult to remove the filter and the oil cup and the cleaning property was poor.

JP-A-4-254130

The present invention solves such a conventional problem, and it is possible to easily remove the filter and the oil cup from the orifice without using a tool, and to improve the cleanability of the filter and the oil cup. Provide ventilation fan.

The ventilation fan of the present invention is a ventilation fan that is attached to a wall surface of a room and includes a main body frame that holds a motor and an orifice, a fan that is fixed to the motor, a filter that is attached to the orifice, and an oil cup. A concave portion or a convex portion is provided on any of the surfaces, and at least one of the filter and the oil cup is provided with a fitting portion fitted into the concave portion or the convex portion.

With this configuration, it is possible to realize a ventilating fan with a good cleaning property that can easily remove the filter from the orifice without using a tool.

FIG. 1 is a perspective view showing a ventilation fan according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the ventilation fan according to the first embodiment of the present invention. FIG. 3 is a partial cross-sectional view showing the filter mounting structure of the ventilation fan according to the first embodiment of the present invention. FIG. 4 is a perspective view showing the filter of the ventilation fan according to the second embodiment of the present invention. FIG. 5 is a perspective view showing the filter of the ventilation fan according to the second embodiment of the present invention. FIG. 6 is a perspective view showing a filter of another form of the ventilation fan according to the second embodiment of the present invention. FIG. 7: is a perspective view which shows the ventilation fan concerning Embodiment 3 of this invention. FIG. 8 is a partial cross-sectional view showing the filter and oil cup mounting structure according to the fourth embodiment of the present invention. FIG. 9 is a partial perspective view showing the ventilation fan according to the fifth embodiment of the present invention. FIG. 10: is a perspective view which shows the ventilation fan concerning Embodiment 6 of this invention. FIG. 11: is a perspective view which shows the oil cup of the ventilation fan concerning Embodiment 6 of this invention. FIG. 12: is a perspective view which shows the ventilation fan concerning Embodiment 7 of this invention. FIG. 13: is a perspective view which shows the ventilation fan concerning Embodiment 7 of this invention. FIG. 14: is a perspective view which shows the oil cup of the ventilation fan concerning Embodiment 8 of this invention. FIG. 15: is a perspective view which shows the oil cup of the ventilation fan concerning Embodiment 8 of this invention. FIG. 16: is a perspective view which shows the oil cup of the ventilation fan concerning Embodiment 9 of this invention. FIG. 17: is a perspective view which shows the oil cup of the ventilation fan concerning Embodiment 9 of this invention. FIG. 18 is a perspective view showing an oil cup of a ventilation fan according to the ninth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same components are denoted by the same reference numerals, and the description thereof may be omitted.

(Embodiment 1)
1 and 2 are perspective views showing a ventilation fan according to the first embodiment of the present invention, and FIG. 3 is a partial cross-sectional view showing a filter mounting structure of the ventilation fan according to the first embodiment of the present invention. In addition, FIG. 1 has shown that the filter 5 and the oil cup 6 can be attached and detached from the main body frame 3 of the ventilation fan of this Embodiment 1. FIG. FIG. 2 is a perspective view showing the entire outer shape when the ventilation fan of the first embodiment is attached to an indoor wall surface and operates. FIG. 3 is an enlarged cross-sectional view of a main part of the filter mounting structure for the ventilation fan according to the first embodiment.

As shown in FIGS. 1, 2, and 3, the ventilation fan according to the first embodiment is attached to a wall surface (not shown) of the room, and includes a main body frame 3 that holds the motor 1 and the orifice 2, and the motor 1. A fixed fan 4, a filter 5 attached to the orifice 2, and an oil cup 6 are provided. In this ventilation fan, a concave portion 7 or convex

portions

8 and 9 are provided on any surface of the orifice 2, and a concave portion 7 or a

convex portion

8 or 9 is provided on at least one of the filter 5 and the oil cup 6. It is configured.

With this configuration, as will be described later, it is possible to realize a ventilating fan with good cleanability that can easily remove the filter 5 from the orifice 2 without using a tool.

As shown in FIG. 1, two hooks 7 a are provided on the upper side of the front surface of the orifice 2 as the recess 7. Further, as the

convex portions

8 and 9, a hooking claw portion 8 that is hooked on the orifice 2 and a detachment preventing claw portion 9 that prevents the projection from being removed from the orifice 2 are provided on both side surfaces of the filter 5.

With this configuration, the filter 5 is hooked by the hooking claw portions 8 of the filter 5 on the two hooking portions 7 a on the front surface of the orifice 2. Then, with the filter 5 in a predetermined position as shown in FIG. 3, the detachment prevention claw portion 9 of the filter 5 is inserted into the square hole 10 of the orifice 2, and the filter 5 is moved upward as indicated by the arrow 5a. Stops moving.

Thus, the ventilation fan of the first embodiment can be fixed simply by hooking the hooking claw portion 8 on the hooking portion 7 a above the front surface of the orifice 2. Thereby, the filter 5 can be easily attached and detached from the orifice 2 without using a tool. In addition, since the structure of the hook portion is not complicated and simple, for example, the possibility that the hook portion is fixed by oil generated during cooking and the filter 5 is difficult to remove is reduced. Therefore, the cleanability of the filter 5 can be improved, and a ventilation fan with good cleaning can be realized.

Further, as shown in FIG. 3, the length of the detachment prevention claw portion 9 is set to a length in which the filter 5 is engaged with the orifice 2 until the filter 5 reaches a certain angle. As shown in FIG. 3, when the angle formed by the filter 5 and the front surface of the orifice 2 is θ, for example, the length of engagement with the square hole 10 of the orifice 2 until θ becomes an angle of 30 degrees.

With this configuration, the disengagement prevention claw portion 9 is inserted into the square hole 10 until the filter 5 reaches a certain angle, for example, 30 degrees.

Thus, according to the ventilation fan of the first embodiment, when removing the filter 5, the filter 5 does not move upward until the filter 5 is pulled to the near side to a certain angle. Thereby, the ventilation fan which the filter 5 does not remove carelessly is realizable.

Although not shown, a configuration in which a water repellent or hydrophilic paint is applied to the surface 5b of the filter 5 may be adopted.

With this configuration, the oil that is generated in a vapor state during cooking and adheres to the surface 5b of the filter 5 to be liquefied easily drops down downward. This is because when a water-repellent coating is applied to the surface 5b, the vapor-like oil adheres to the surface 5b and becomes liquid fine particles, which easily move downward due to the water-repellent action of the coating. In the course of this movement, the oil consisting of fine liquid particles moves downward by increasing the size of the particles, and since the particle size increases, it becomes easier to move downward and more likely to sag.

In addition, when a hydrophilic paint is applied to the surface 5b, water vapor or the like adheres to the surface 5b together with oil, thereby preventing the oil to be adhered thereafter from adhering to the surface 5b. If it does so, oil will be repelled by the water on the hydrophilic coating, and it will become a large particle from a liquid fine particle, and it will be easy to move below and it will fall down easily.

As described above, according to the ventilation fan of the first embodiment, it is difficult for oil to adhere to the filter 5, and thus a ventilation fan that can further improve the cleaning performance can be realized.

That is, the ventilation fan of the present invention is attached to the wall surface of the room, the main body frame 3 holding the motor 1 and the orifice 2, the fan 4 fixed to the motor 1, the filter 5 and the oil cup 6 attached to the orifice 2. It has. In this ventilation fan, two hooking portions 7 a are provided on the upper side of the front surface of the orifice 2, hooking claws 8 that are hooked on the orifice 2 on both side surfaces of the filter 5, and removal prevention that prevents the filter 2 from coming off the orifice 2. A claw portion 9 is provided.

With this configuration, the filter 5 is hooked by two hooks 7a on the front surface of the orifice 2 with the hooks of the filter 5, and the filter 5 is prevented from coming off when the filter 5 is in a predetermined position. 9 is inserted into the square hole 10 of the orifice 2. As a result, the filter 5 does not move upward.

Further, the length of the detachment prevention claw portion 9 is set to a length in which the filter 5 is engaged with the orifice 2 until the filter 5 reaches a certain angle. With this configuration, the disengagement prevention claw portion 9 is inserted into the square hole 10 until the filter has a fixed angle of 5, and the filter 5 does not move upward.

Further, the surface 5b of the filter 5 is configured to be applied with a water repellent or hydrophilic paint. With this configuration, the oil adhering to the filter 5 is easily removed.

(Embodiment 2)
4 and 5 are perspective views showing the filter 5 of the ventilation fan according to the second embodiment of the present invention.

As shown in FIG. 4, a disengagement prevention claw portion 9 is provided in the vicinity of the hooking claw portion 8 provided on the upper portion of the filter 5.

With this configuration, when the filter 5 is tilted, the detachment prevention claw portion 9 is positioned at a distance close to the orifice 2.

As described above, according to the ventilation fan of the second embodiment, when the filter 5 is tilted at a certain angle, the slip-off preventing claw portion 9 for keeping the slip-off preventing claw portion 9 inserted in the square hole 10 is provided. Can be shortened. Further, since the detachment prevention claw portion 9 may be deformed when the filter 5 is cleaned, the filter 5 can be stably attached and detached by shortening the length and making it difficult to deform.

Further, as shown in FIG. 5, the hooking claw portion 8 and the detachment preventing claw portion 9 are integrally formed as an integrated claw portion 20, and the integrated claw portion 20 is joined to the filter 5 with a rivet 11. Yes.

This configuration makes it possible to make the protrusion of the surface 5b of the filter 5 of the fixed part for fixing the rivet 11 as flat as possible.

As described above, according to the ventilation fan of the second embodiment, since the filter 5 can be easily removed from the orifice 2 without using a tool, a ventilation fan that can easily clean the filter 5 can be realized. Further, by using two rivets 11, it is possible to prevent the parts from rotating. At the same time, the filter 5, the disengagement prevention claw portion 9, and the hooking claw portion 8 can be made of different thickness materials or different materials.

FIG. 6 is a perspective view showing a filter 5 of another form of the ventilation fan according to the second embodiment of the present invention. As shown in FIG. 6, an integral filter 21 in which a hooking claw portion 8 and a detachment preventing claw portion 9 are integrally provided on a part of the filter 5 is formed, and the integral filter 21 is formed of the same material. Yes.

With this configuration, the filter 5, the hooking claw portion 8, and the detachment preventing claw portion 9 can be formed as a single-piece integral filter 21 by integral molding using the same material such as a metal material or a resin material.

This makes it possible to reduce the processing time of the parts in the factory and the assembly time of the parts used for the ventilation fan, thereby realizing a low-cost ventilation fan.

That is, the ventilating fan of the present invention is provided with the disengagement prevention claw portion 9 in the vicinity of the hooking claw portion 8 provided on the upper portion of the filter 5. With this configuration, when the filter 5 is tilted, the detachment prevention claw portion 9 is positioned at a distance close to the orifice 2, and the filter 5 can be stably attached and detached.

Further, the hooking claw portion 8 and the detachment preventing claw portion 9 are integrally formed as an integrated claw portion 20, and the integrated claw portion 20 is joined to the filter 5 with a rivet 11. With this configuration, the detachment preventing claw portion 9 and the hooking claw portion 8 are integrated, and are securely fixed to the filter 5 with the rivet 11.

Further, the filter 5 is configured as an integrated filter 21 in which a hooking claw portion 8 and a detachment preventing claw portion 9 are integrally provided on a part of the filter 5, and the integrated filter 21 is formed of the same material. With this configuration, the filter 5, the disengagement prevention claw portion 9, and the hooking claw portion 8 are configured as a single part as the integrated filter 21, and the cost of the filter 5 can be reduced.

(Embodiment 3)
FIG. 7: is a perspective view which shows the ventilation fan concerning Embodiment 3 of this invention. As shown in FIG. 7, a boss 12 is provided on the orifice 2 so that the filter 5 can be fixed to the orifice 2 with a screw.

With this configuration, the filter 5 is mechanically fixed to the orifice 2. Accordingly, it is possible to reliably prevent a dangerous state in which the filter 5 is unintentionally removed by the user during operation of the ventilation fan and the user is injured by the fan 4.

(Embodiment 4)
FIG. 8 is a partial cross-sectional view showing the mounting structure of the filter 5 and the oil cup 6 of the ventilation fan according to the fourth embodiment of the present invention. As shown in FIG. 8, a plurality of protrusions 13 that protrude toward the oil cup 6 are provided in a portion that engages with the oil cup 6 below the filter 5.

With this configuration, it is possible to reliably provide a gap between the filter 5 and the oil cup 6. Thereby, the oil dripping down the surface 5 b of the filter 5 is guided to the inside of the oil cup 6, and the oil can be reliably collected by the oil cup 6.

(Embodiment 5)
FIG. 9 is a partial perspective view showing the ventilation fan according to the fifth embodiment of the present invention. As shown in FIG. 9, a plurality of vent holes 14 are provided in the front surface 5c of the filter 5, and a strip-shaped throttle portion 15 is provided in the vertical direction indicated by the arrow 5d.

This configuration can improve the strength of the filter 5. Thereby, since the intensity | strength is improving also at the time of attachment or detachment of the filter 5, and the oil dirt cleaning, the ventilation fan which cannot change easily is realizable.

(Embodiment 6)
FIG. 10 is a perspective view showing a ventilation fan according to the sixth embodiment of the present invention, and FIG. 11 is a perspective view showing an oil cup of the ventilation fan according to the sixth embodiment of the present invention.

As shown in FIGS. 10 and 11, the ventilation fan according to the sixth embodiment is attached to a wall surface of a room and has a main body frame 103 that holds a motor 101 and an orifice 102, a fan 104 that is fixed to the motor 101, and an orifice. A filter 105 and an oil cup 106 attached to 102 are provided. In the ventilation fan according to the sixth embodiment, the concave portion 108 or the convex portion 107 is provided on any surface of the orifice 102, and the concave portion 108 or the convex portion 107 is fitted into at least one of the filter 105 and the oil cup 106. Is provided. The convex portion 107 is provided in a trapezoidal shape on the lower surface of the orifice 102, and the oil cup 106 is provided with a concave portion 108 similar to the convex portion 107 in a portion where the oil cup 106 is fitted to this portion, and a handle is provided on the lower surface of the oil cup 106. A claw portion 110 integral with the portion 109 and the handle portion 109 is provided with a spring property. The claw catching portion 111 is provided on the lower surface of the orifice 102 into which the claw portion 110 is fitted, and when the oil cup 106 is attached to the orifice 102, for example, a “click” is provided to make a mounting sound. .

This configuration prevents the oil cup 106 from falling during operation because the concave portion 108 of the oil cup 106 is slid and fitted to the convex portion 107 of the orifice 102 spreading downward from the front surface. Further, when the claw portion 110 of the handle portion 109 having a spring property gets over the claw catching portion 111 on the lower surface of the orifice 102 and engages, a clicking sound is heard.

Thus, according to the ventilation fan of the sixth embodiment, it is not necessary to use a tool, and the oil cup 106 can be easily attached and detached. This makes it possible to realize a ventilation fan that can be securely attached to the filter 105 because it is hard to drop even if vibration during operation or aging of parts occurs, and it makes a clicking sound when attached.

Further, as shown in FIG. 11, a handle portion 109 is provided at two locations on the lower surface of the oil cup 106, and a claw catching portion 111 is provided on the lower surface of the orifice 102 to which the claw portion 110 of the handle portion 109 is fitted. Yes.

With this configuration, the oil cup 106 needs to be attached and detached by gripping the handle portions 109 on both sides.

Thus, according to the ventilation fan of the sixth embodiment, it is necessary to remove the oil cup 106 by holding the handle 109 with both hands. Accordingly, the oil cup 106 can be removed while maintaining the horizontal state, and the oil cup 106 can be reliably treated without overflowing when the oil cup 106 is removed.

That is, the ventilation fan of the present invention is attached to a wall surface of a room, a main body frame 103 that holds the motor 101 and the orifice 102, a fan 104 fixed to the motor 101, a filter 105 and an oil cup 106 attached to the orifice 102, It has. In this ventilation fan, a trapezoidal convex portion 107 is provided on the lower surface of the orifice 102, and the oil cup 106 is provided with a concave portion 108 similar to the convex portion 107 at a portion where the oil cup 106 is fitted. On the lower surface of the oil cup 106, a handle portion 109 and a claw portion 110 integrated with the handle portion 109 are provided with a spring property. A claw catching portion 111 is provided on the lower surface of the orifice 102 into which the claw portion 110 is fitted so that a mounting sound is produced when the oil cup 106 is mounted on the orifice 102.

With this configuration, in the ventilation fan, the concave portion 108 of the oil cup 106 is slid in the horizontal direction in accordance with the convex portion 107 of the orifice 102, and the claw portion 110 of the handle portion 109 having a spring property is provided on the bottom surface of the orifice 102. Get over the catch 111 and engage.

Further, a handle portion 109 is provided at two locations on the lower surface of the oil cup 106, and a claw catching portion 111 is provided on the lower surface of the orifice 102 into which the claw portion 110 of the handle portion 109 is fitted. With this configuration, the handle portions 109 on both sides of the oil cup 106 are picked and attached.

(Embodiment 7)
12 and 13 are perspective views showing a ventilation fan according to Embodiment 7 of the present invention. As shown in FIG. 12, a plurality of ribs 112 projecting from the lower front surface of the orifice 102 toward the filter 105 are provided, and slits 113 having an interval that prevents fingers from entering the ribs 112 are provided.

This configuration prevents a finger from entering through the opening between the filter 105 and the orifice 102. Thereby, even when the user is driving without wearing the oil cup 106, it is possible to prevent the finger from coming into contact with the fan (not shown) and being injured.

Further, as shown in FIG. 13, the shape of the rib 112 is inclined toward the slit 113.

With this configuration, oil that adheres to the orifice 102 and flows down to the rib 112 flows to an oil cup (not shown) below the slit 113 due to the inclination of the rib 112. As described above, according to the ventilation fan of the seventh embodiment, oil accumulates in the oil cup (not shown) and can be easily cleaned.

(Embodiment 8)
14 and 15 are perspective views showing the oil cup 106 of the ventilation fan according to the eighth embodiment of the present invention.

As shown in FIG. 14, it is set as the structure which provided the notch part 114 in the side surface of the oil cup 106. As shown in FIG.

With this configuration, when the oil accumulated in the oil cup 106 exceeds a predetermined amount, the oil flows out from the notch 114. As described above, according to the ventilating fan of the eighth embodiment, the oil begins to flow from the originally intended place, prevents the wall surface from becoming dirty, and the oil exceeds the specified amount and overflows from the oil cup 6. Can easily be noticed.

Further, as shown in FIG. 15, the oil receiver 115 is provided outside the notch 114 of the oil cup 106.

With this configuration, the oil overflowing from the oil cup 106 is collected in the oil receiver 115. Thereby, the ventilation fan which can collect without dripping the oil which overflowed from the oil cup 106 on a stove is realizable.

(Embodiment 9)
16, 17 and 18 are perspective views showing an oil cup of a ventilation fan according to the ninth embodiment of the present invention.

As shown in FIG. 16, a display unit 116 that displays the amount of accumulated oil is provided on the front side of the oil cup 106. The display unit 116 is made of a transparent material so that the amount of accumulated oil can be confirmed. Further, when the oil cup 106 is made of a resin material, it is useful that the oil cup 106 is formed integrally with the material of the display unit 116 without fear of oil leakage.

With this configuration, a transparent display 116 is provided on the front surface of the oil cup 106, and the amount of oil accumulated in the oil cup 106 can be confirmed. As described above, according to the ventilation fan of the ninth embodiment, the amount of oil accumulated in the oil cup 106 can be confirmed. Along with this, it is possible to display an accumulation amount that requires oil disposal, and it is possible to realize a ventilation fan that allows a user to easily determine the timing of oil disposal.

Further, as shown in FIG. 17, the display unit 116 is also provided on the lower surface side of the oil cup 106.

With this configuration, the display unit 116 is provided from the front side to the lower side of the oil cup 106, and accumulation of oil can be confirmed from below the ventilation fan. Thereby, when a ventilation fan is attached to a high place, accumulation | storage of oil can be confirmed from the lower part.

Further, as shown in FIG. 18, the display unit 116 is provided at the left and right ends of the oil cup 106.

With this configuration, the oil accumulation status can be confirmed on the left and right display units 116. Thus, according to the ventilating fan of the ninth embodiment, it is possible to realize a ventilating fan in which the display unit 116 is easy to see even when the ventilating fan is installed in the right corner or the left corner of the kitchen.

Although not shown, the oil cup 106 is made of a transparent resin material.

With this configuration, accumulated oil can be confirmed from all directions. Thus, according to the ventilation fan of the ninth embodiment, a ventilation fan in which the amount of accumulated oil can be easily confirmed from anywhere can be realized.

The ventilating fan according to the present invention has a configuration in which a concave portion or a convex portion is provided on any surface of the orifice, and a fitting portion that is fitted into the concave portion or the convex portion is provided in at least one of the filter and the oil cup. With this configuration, the filter can be easily attached and detached without the use of tools, and the present invention is useful for a ventilation fan with a filter.

DESCRIPTION OF SYMBOLS 1,101 Motor 2,102 Orifice 3,103 Main body frame 4,104 Fan 5,105

Filter

5a, 5d Arrow 5b Front surface 5c Front surface 6,106 Oil cup 7,107 Insertion part (concave part)
7a Hook (recess)
8 Claw for hook (convex)
9 Detachment prevention nail (convex)
10 Square hole 11 Rivet 12 Boss 13 Protruding part 13a Clearance 14 Vent hole 15 Restriction part 20 Integrated claw part 21 Integrated filter 107 Convex part 108 Concave part 109 Handle part 110 Claw part 111 Claw hook part 112 Rib 113 Slit 114 Notch Part 115 Oil receiver 116 Display part

Claims

A ventilation fan that is attached to a wall surface of a room and has a motor and a body frame that holds the orifice, a fan that is fixed to the motor, a filter that is attached to the orifice, and an oil cup. A ventilating fan comprising a recess or a projection, and an inset portion fitted into the recess or the projection in at least one of the filter and the oil cup.
The concave portions are two hook portions provided on the upper side of the front surface of the orifice. The hook portions are hooked on the both sides of the filter and are prevented from coming off from the orifice. The ventilation fan according to claim 1, further comprising a prevention claw portion.
The ventilating fan according to claim 2, wherein a length of the claw portion for preventing detachment is a length in which the filter is engaged with the orifice until the filter reaches a certain angle.
The ventilation fan according to claim 2, wherein the detachment preventing claw portion is provided in the vicinity of the hooking claw portion provided on the upper portion of the filter.
5. The device according to claim 2, wherein the hooking claw portion and the disengagement prevention claw portion are formed as an integral claw portion, and the integral claw portion is joined to the filter with a rivet. The ventilation fan of item 1.
5. The integrated filter in which the hooking claw portion and the detachment preventing claw portion are integrally provided in a part of the filter, and the integrated filter is formed of the same material. The ventilation fan of any one of Claims.
The ventilation fan according to any one of claims 2 and 4, wherein a water-repellent or hydrophilic paint is applied to a surface of the filter.
The ventilation fan according to claim 2, wherein the orifice is provided with a boss, and the filter can be fixed to the orifice with a screw.
The ventilation fan according to claim 2, wherein a plurality of protrusions that are convex toward the oil cup are provided at a portion of the lower part of the filter that engages with the oil cup.
The ventilation fan according to claim 2, wherein a plurality of ventilation holes are provided in front of the filter, and a strip-shaped throttle part is provided in the vertical direction.
The convex portion is provided in a trapezoidal shape on the lower surface of the orifice, a concave portion similar to the convex portion is provided in a portion where the oil cup is fitted to this portion, and the handle portion and the handle are provided on the lower surface of the oil cup. A claw part integrated with the claw part is provided with a spring property so that a claw catching part is provided on the lower surface of the orifice to which the claw part is fitted, and a mounting sound is produced when the oil cup is attached to the orifice. The ventilation fan according to claim 1, wherein the ventilation fan is provided.
The ventilation fan according to claim 11, wherein the handle portion is provided at two locations on the lower surface of the oil cup, and a claw catching portion is provided on the lower surface of the orifice to which the claw portion of the handle portion is fitted. .
The ventilation fan according to claim 11, wherein a plurality of ribs projecting from the lower front surface of the orifice toward the filter are provided, and slits are provided having an interval enough to prevent fingers from entering the ribs.
The ventilation fan according to claim 13, wherein the shape of the rib is inclined toward the slit.
The ventilation fan according to claim 11, wherein a cutout portion is provided on a side surface of the oil cup.
The ventilation fan according to claim 15, wherein an oil receiver is provided outside the notch of the oil cup.
The ventilation fan according to claim 11, wherein a display unit that displays an accumulated amount of oil is provided on a front side of the oil cup.
The ventilation fan according to claim 17, wherein the display unit is also provided on a lower surface side of the oil cup.
The ventilation fan according to claim 11, wherein the display unit is provided at left and right ends of the oil cup.
The ventilation fan according to claim 11, wherein the oil cup is formed of a transparent resin material.