Air purifier

Abstract

Provided is an air purifier that can suction and purify the smoke generated when a cigarette is smoked.　An air purifier 10 according to the present disclosure is provided with: a case 11 including a front panel (air intake surface) 20 for air that is provided to one side in a predetermined direction intersecting the vertical direction, an outlet for air, and a ventilation channel 16 through which air that is suctioned from the front panel 20 and discharged from the outlet flows; a filter 12 disposed in the ventilation channel 16; and a fan 13 that is disposed in the ventilation channel 16 and generates a flow of air from the front panel 20 to the outlet. The front panel 20 has an air intake 25 that is formed to a size allowing insertion of at least a cigarette, and that is able to suction external air. The case 11 has a cigarette insertion space 26 that extends from the air intake 25 toward the other side of the predetermined direction.

Description

Air purifier

[0001] The present disclosure relates to an air purifier.

[0002] Patent Document 1 discloses an air purifier. A fan device is attached to the rear case of the air purifier main body, and an operation panel is attached to the front case. Further, a dust collection filter is fixed to the front case, and a front panel with a suction port is attached. There is an air outlet at the upper part of the rear case, and a movable louver for changing the wind direction of the blown air flow to the left and right is attached to the air outlet.

[0003] Japanese Unexamined Patent Application Publication No. 2006-057919

[0004] By the way, the smoke emitted when smoking includes the smoke exhaled from the smoker's mouth and the smoke coming out of the cigarette held in the hand. Therefore, it is difficult to completely suck and purify the smoke emitted when smoking with an air purifier. When smoking, a smoker may suck under the hood where a kitchen ventilation fan is provided so that the smoke does not spread in the room, or may go out of the room and smoke on a veranda or the like. In particular, the smoke exhaled from the smoker's mouth can be sucked and purified by the air purifier by the smoker exhaling the smoke toward the suction port of the air purifier, but it is difficult to suck the smoke coming out of the cigarette held in the hand with the air purifier.

[0005] Therefore, an object of the present disclosure is to provide an air purifier capable of sucking and purifying the smoke emitted when smoking.

[0006] To solve the above problems, an air purifier according to a first aspect of the present invention includes an air suction surface portion provided on one side in a predetermined direction intersecting the vertical direction, an air discharge port, and a ventilation path through which the air sucked from the suction surface portion and discharged from the discharge port flows, a case having the above, a filter disposed in the ventilation path, and a fan disposed in the ventilation path to generate a flow of air from the suction surface portion to the discharge port. The suction surface portion is formed to have a size at least large enough to insert a cigarette and has a suction port capable of sucking external air. The case has a cigarette insertion space extending from the suction port toward the other side in the predetermined direction.

[0007] A second aspect of the present invention is the air purifier according to the first aspect, wherein the intake surface is formed in a concave shape that is recessed from one side to the other side, and the intake port is formed at the bottom of the other side of the concave intake surface.

[0008] A third aspect of the present invention is an air purifier according to the first or second aspect, wherein the intake surface has a plurality of small intake ports that are smaller in size than the intake port.

[0009] A fourth aspect of the present invention is an air purifier according to the first or second aspect, wherein the filter is disposed on the other side of the cigarette insertion space, and the case has a filter guard disposed between the cigarette insertion space and the filter to protect the filter from cigarettes.

[0010] A first aspect of the present invention is an air purifier according to the fourth aspect described above, wherein the one side surface of the filter has a first region covered by the filter guard from the one side and a second region not covered by the filter guard, and the filter guard has an inclined surface that slopes from the top side protruding toward the one side toward the other side toward the second region, and is formed in a convex shape that protrudes toward the one side.

[0011] According to this disclosure, it is possible to provide an air purifier that can suck up and purify the smoke produced when smoking cigarettes.

[0012] This is a front view perspective of an air purifier according to one embodiment of the present invention. This is a rear view perspective of the air purifier. This is a cross-sectional view taken along the line III-III in Figure 1. This is a cross-sectional perspective view of Figure 3.

[0013] One embodiment of the present invention will be described below with reference to the drawings. In each figure, FR indicates the side (front) where the air intake of the air purifier is located, UP indicates the top, and IN indicates the inside in the width direction. In the following description, the front-to-back direction is the direction that intersects with the up-and-down direction, with the side where the air intake of the air purifier is located being considered the front, and the opposite side being the rear. The width direction is the direction that intersects with both the up-and-down direction and the front-to-back direction. The inside in the width direction means the direction toward the center in the width direction, and the outside in the width direction means the direction away from the center in the width direction.

[0014] Figure 1 is a front view perspective of an air purifier according to one embodiment of the present invention. Figure 2 is a rear view perspective of the air purifier. Figure 3 is a cross-sectional view taken along the line III-III in Figure 1. Figure 4 is a perspective view of the cross-section in Figure 3.

[0015] The air purifier according to this embodiment is applicable, for example, to a portable air purifier used in a home or the like. The air purifier cleans the surrounding air by purifying the air drawn in from the outside with an internal filter and then discharging it from an outlet.

[0016] As shown in Figures 1 to 4, the air purifier 10 according to this embodiment comprises a case 11, a filter 12 disposed inside the case 11, and a fan 13 disposed inside the case 11. In addition to these, the air purifier 10 also comprises a control unit (not shown) for controlling the fan 13, a sensor (not shown), and the like.

[0017] The case 11 comprises a case body 14 that houses various components including a filter 12 and a fan 13, and a front case 15 fixed to the case body 14, and partitions an air passage 16 through which air flows inside. Details of the front case 15 will be described later.

[0018] The case body 14 is formed in a box shape with an opening 17 on the front side (one side) in the front-to-back direction (a predetermined direction intersecting the up-and-down direction). The case body 14 also has an outlet 18 that can discharge purified air. The opening 17 is covered by the front case 15, which will be described later. The outlet 18 is the air outlet when the air purified by the air purifier 10 is discharged to the outside of the case 11. In this embodiment, the outlet 18 is formed on the lower part of one side in the width direction of the rear surface of the case body 14. The shape of the outlet 18 is not particularly limited. Also, the position in which the outlet 18 is formed is not limited to the above; for example, the outlet 18 may be formed on the top surface or side surface of the case body 14.

[0019] Inside the case body 14, the area of ​​the air passage 16 through which air flows, which is continuous from the opening 17 to the discharge port 18 (the area downstream of the opening 17), is partitioned. The area of ​​the air passage 16 upstream of the opening 17 is partitioned by the front case 15.

[0020] A filter 12 is positioned near the rear of the opening 17 in the ventilation passage 16 of the case body 14. In this embodiment, three rectangular plate-shaped filters 12a to 12c are arranged. The three filters 12a to 12c are, in order from the opening 17 side (front side), the first filter 12a, the second filter 12b, and the third filter 12c. The three filters 12a to 12c are arranged in layers, intersecting the front-to-back direction, so that air passes from the front to the rear (other side). The front surface of the first filter 12a is exposed to the front from the opening 17. Note that the number, position, and shape of the filters 12 are not limited to those described above, and should be able to purify the air drawn in from the outside.

[0021] Examples of the first filter 12a and the second filter 12b include HEPA filters that remove components of cigarette smoke. HEPA filters can remove fine particles that make up cigarette smoke by blocking with glass fibers, contact with glass fibers due to inertia, sedimentation due to gravity, Brownian motion, and electrostatic force.

[0022] Examples of the third filter 12c include a gas filter that removes tobacco odor components. Preferably, the third filter 12c is an activated carbon filter that supports activated carbon that adsorbs tobacco odor components.

[0023] A hopper 19 is provided in the ventilation passage 16 of the case body 14, downstream of the third filter 12c (towards the rear in this embodiment). The hopper 19 reduces the cross-sectional area of ​​the ventilation passage 16 as it moves towards the rear.

[0024] A fan 13 is positioned downstream of the hopper 19 (towards the rear in this embodiment) in the ventilation passage 16 of the case body 14. That is, the fan 13 in this embodiment is positioned downstream of the filter 12 in the ventilation passage 16. The space in the ventilation passage 16 where the fan 13 is positioned is connected to the outside via the discharge port 18. The fan 13 generates an airflow from the front panel (suction surface) 20 of the front case 15, which will be described later, to the discharge port 18. The type of fan 13 is not particularly limited, but examples include a sirocco fan and a propeller fan. The fan 13 in this embodiment is a sirocco fan.

[0025] The front case 15 is positioned to cover the entire opening 17 on the front of the case body 14 and is fixed to the case body 14. The front case 15 has a top panel 21, a bottom panel 22, side panels 23 on both sides in the width direction, a front panel (suction surface) 20, and a filter guard 24. An example of the front case 15 is described below, but the shape of the front case 15 is not limited to this example.

[0026] The upper panel 21 and lower panel 22 of the front case 15 are formed in a plate shape that intersects the vertical direction. Furthermore, the upper panel 21 and lower panel 22 are formed symmetrically to each other vertically. The upper panel 21 and lower panel 22 are positioned along the upper and lower edges of the opening 17 of the case body 14 and extend forward from the opening 17. The rear ends of the upper panel 21 and lower panel 22 are inserted into the opening 17 along the edge of the opening 17 of the case body 14. The upper panel 21 and lower panel 22 define the upper and lower parts of the ventilation passage 16 above and below the region upstream of the opening 17 of the case body 14. In the widthwise central part of the region of the upper panel 21 and lower panel 22 that is inserted into the opening 17, a guard support portion 22a (the guard support portion of the upper panel 21 is not shown in the figure) is provided to support the filter guard 24, which will be described later.

[0027] The side panels 23 on both sides of the front case 15 in the width direction (hereinafter referred to as "side panels 23 on both sides") are formed in a plate shape that intersects with the width direction. Furthermore, the side panels 23 on both sides are formed symmetrically with respect to each other in the width direction. The side panels 23 on both sides extend in the vertical direction and connect the widthwise edges of the top panel 21 and the bottom panel 22. That is, the top panel 21, bottom panel 22, and side panels 23 on both sides in the width direction of the front case 15 in this embodiment are formed in a rectangular frame shape. The side panels 23 on both sides are arranged along the widthwise edges of the opening 17 of the case body 14 and extend forward from the opening 17. The rear ends of the side panels 23 on both sides are inserted into the opening 17 along the edges of the opening 17 of the case body 14. The side panels 23 on both sides partition the widthwise side of the region of the ventilation passage 16 upstream of the opening 17 of the case body 14.

[0028] The front panel 20 of the front case 15 is formed in a plate shape that intersects the front-to-back direction and is positioned at a location spaced forward from the opening 17 of the case body 14. The front panel 20 has an intake port 25 that can draw in outside air. The intake port 25 is formed to be at least large enough to insert a cigarette.

[0029] The front panel 20 of this embodiment is composed of front panels 20a on both sides in the width direction (hereinafter referred to as "left and right front panels 20a"). The left and right front panels 20a are formed symmetrically in the width direction. The left and right front panels 20a are positioned spaced apart from each other in the width direction and extend in the vertical direction. The left and right front panels 20a extend inward in the width direction from the front edges of the side panels 23 on both sides, and the upper and lower edges of the left and right front panels 20a are supported by the upper panel 21 and the lower panel 22. When both the left and right front panels 20a are viewed as a whole (hereinafter, the state in which both the left and right front panels 20a are viewed as a whole may simply be referred to as "front panel 20"), the front panel 20 is curved so that the central side in the width direction bulges backward. That is, the front panel 20 is formed in a concave shape that curves and recesses from front to rear. As a result, a space 33 that recesses toward the rear is formed in front of the front panel 20. Each of the left and right front panels 20a is inclined so that it is positioned further back from the outside in the width direction towards the inside, and the central side of each panel in the width direction is curved so as to bulge outwards towards the rear. In this embodiment, each of the left and right front panels 20a is curved so as to bulge outwards towards the rear, but this is not the only option. For example, both the left and right front panels 20a may be extended in a straight line from the outside in the width direction towards the rear. That is, the front panel 20 may be formed in a valley shape so that the central side in the width direction is recessed towards the rear.

[0030] A vertically elongated suction port 25 is partitioned between the left and right front panels 20a. That is, the suction port 25 is formed at the bottom rear of the concave front panel 20. The suction port 25 is located in the center of the width direction of the front case 15 and extends vertically. Both sides of the suction port 25 in the width direction are partitioned by the width direction inner edges of the left and right front panels 20a, and the top and bottom of the suction port 25 are partitioned by the top panel 21 and the bottom panel 22. The width direction inner edges of the left and right front panels 20a are positioned spaced forward from the front surface (one side surface) of the filter 12. That is, the suction port 25 is positioned spaced forward from the front surface of the filter 12.

[0031] Behind the intake port 25, a cigarette insertion space 26 is provided, extending backward from the intake port 25. That is, the case 11 has a cigarette insertion space 26 extending backward (to the other side in a predetermined direction) from the intake port 25, and the filter 12 is positioned behind the cigarette insertion space 26. The top and bottom of the cigarette insertion space 26 are divided by the top panel 21 and the bottom panel 22. The front of the cigarette insertion space 26 is open by the intake port 25, and the rear of the cigarette insertion space 26 is divided by the filter guard 24, which will be described later. In addition, both sides in the width direction of the cigarette insertion space 26 are open and communicate with the space behind the left and right front panels 20a (hereinafter referred to as the "rear panel space 27"). The rear panel space 27 is the space between the left and right front panels 20a and the front of the filter 12. The cigarette insertion space 26 refers to the space in which a smoker can insert a cigarette held in their hand from the intake opening 25 towards the rear.

[0032] Multiple small suction ports 28, smaller in size than the main suction port 25, are formed on the left and right front panels 20a. In this embodiment, the small suction ports 28 are slits extending in the vertical direction, and multiple such ports are provided on each of the left and right front panels 20a. That is, the front panel 20 has multiple small suction ports 28, each smaller in size than the main suction port 25. The area of ​​each small suction port 28 is smaller than that of the main suction port 25. Note that the shape of the small suction ports 28 is not limited to slits extending in the vertical direction; for example, they may be slits extending in the width direction, or they may be holes of a circular or rectangular shape.

[0033] The filter guard 24 is a component for protecting the filter 12 from cigarettes inserted into the cigarette insertion space 26, and is positioned between the cigarette insertion space 26 and the filter 12. The filter guard 24 is formed in a plate shape that intersects the front-rear direction, is positioned in front of the filter 12, extends in the vertical direction, and protects the filter 12 from cigarettes. That is, the case 11 has a filter guard 24 positioned between the cigarette insertion space 26 and the filter 12 to protect the filter 12 from cigarettes. Both the upper and lower sides of the filter guard 24 are supported by guard support portions 22a of the upper panel 21 and the lower panel 22 (the guard support portion of the upper panel 21 is not shown in the figure). The widthwise length of the filter guard 24 in this embodiment is set to be approximately the same as the widthwise length of the intake port 25 (the distance between the inner edges in the widthwise direction of the left and right front panels 20a). The filter guard 24 is positioned at the same widthwise position as the intake port 25. Furthermore, the filter guard 24 is spaced rearward from the inner edges (inlet ports 25) in the width direction of the left and right front panels 20a and is positioned near the front of the filter 12. In this embodiment, the length of the filter guard 24 in the width direction is approximately the same as the length of the inlet port 25 in the width direction, but it is not limited to this, and it is preferable that it has at least the same length as the inlet port 25 in the width direction, and may be longer than the length of the inlet port 25 in the width direction.

[0034] The filter guard 24 of this embodiment is formed in a convex shape with its central part in the width direction projecting forward. The filter guard 24 has left and right inclined surfaces 24b that extend backward on both sides in the width direction (towards the second region 32 of the filter 12, which will be described later) from the top portion 24a located in the center in the width direction and projecting forward. Each of the left and right inclined surfaces 24b is inclined so that it is located further backward as it moves outward in the width direction from the top portion 24a, and the central side in the width direction of each panel is curved so as to bulge backward. In this embodiment, each of the left and right inclined surfaces 24b is curved so as to bulge backward, but this is not the only way to do so. For example, both the left and right inclined surfaces 24b may be extended linearly from the top portion 24a to the rearward side in the width direction.

[0035] Multiple small intake ports 29 are formed on the left and right inclined surfaces 24b of the filter guard 24. In this embodiment, the small intake ports 29 are slits that extend in the vertical direction, and multiple ports are provided on each of the left and right inclined surfaces 24b. The shape of the small intake ports 29 is not limited to slits that extend in the vertical direction; for example, they may be slits that extend in the width direction, or they may be holes of a circular or rectangular shape.

[0036] A communication opening 30 is defined between the inner edges in the width direction of the left and right front panels 20a and the outer edges on both sides in the width direction of the left and right inclined surfaces 24b of the filter guard 24, connecting the cigarette insertion space 26 and the rear panel spaces 27 on both sides in the width direction. The top and bottom of each communication opening 30 are defined by the top panel 21 and the bottom panel 22, the front of the communication opening 30 is defined by the inner edges in the width direction of the left and right front panels 20a, and the rear of the communication opening 30 is defined by the outer edges on both sides in the width direction of the filter guard 24.

[0037] The front surface of the filter 12 has a first region 31 that is covered from the front by the filter guard 24, and a second region 32 that is not covered by the filter guard 24. In this embodiment, the first region 31 is a region of the front surface of the filter 12 that extends vertically in the central part in the width direction. The second region 32 is a region of the front surface of the filter 12 that is located on both sides of the first region 31 in the width direction and extends vertically. The second region 32 partitions the rear of the rear panel space 27.

[0038] In the air purifier 10 configured as described above, the front panel 20 of the case 11 has an intake port 25 that is at least large enough to insert a cigarette and can draw in outside air. Therefore, smokers can exhale smoke towards the intake port 25 of the air purifier 10, allowing the air purifier 10 to draw in and purify the smoke they exhale from their mouths.

[0039] Furthermore, since case 11 has a cigarette insertion space 26 extending backward from the intake port 25, when a smoker is not inhaling a cigarette but simply holding it in their hand (hereinafter referred to as "when not inhaling a cigarette"), they can keep the cigarette inserted into the cigarette insertion space 26 from the intake port 25. This ensures that when not inhaling, the smoke emitted from the cigarette held in the hand is reliably drawn in and purified by the air purifier 10.

[0040] Furthermore, since case 11 has a cigarette insertion space 26 extending backward from the intake port 25, smokers can smoke a cigarette with the cigarette inserted from the intake port 25 into the cigarette insertion space 26. In this case, the air purifier 10 can reliably draw in and purify the smoke coming from the cigarette, not only when the smoker is not inhaling, but also when the smoker is inhaling.

[0041] In this way, the air purifier 10 can suck up and purify the smoke coming from the cigarette when you are not smoking it, the smoke coming from the cigarette when you are inhaling it, and the smoke exhaled from your mouth after you have inhaled it.

[0042] Therefore, according to this embodiment, it is possible to provide an air purifier 10 that can suck up and purify the smoke produced when smoking a cigarette.

[0043] Further, since the front panel 20 is formed in a concave shape that curves and depresses from the front to the rear, a space 33 that depresses rearward is formed in front of the front panel 20. Therefore, a smoker can insert his / her face into the space 33 in front of the front panel 20. Also, since the suction port 25 is formed at the bottom rear of the concave front panel 20, the smoker can insert his / her face into the space 33 in front of the front panel 20 while inserting the tobacco held in his / her hand from the suction port 25 into the tobacco insertion space 26 and smoke the tobacco. Further, since the front panel 20 is formed in a concave shape that curves and depresses from the front to the rear and the suction port 25 is formed at the bottom rear of the front panel 20, the wind speed in the suction direction in the space 33 in front of the front panel 20 is stronger on the rear end side (the suction port 25 side) than on the front end side of the front panel 20. Thereby, even if the smoke leaks forward from the suction port 25 (for example, leaks from the mouth) when smoking the tobacco with the face inserted into the space 33 in front of the front panel 20, it will leak into the space 33, so the leaked smoke can be sucked in from the suction port 25 and purified.

[0044] Further, since the left and right front panels 20a have a plurality of small suction ports 28 that are smaller than the suction port 25, smoke can also be sucked in from the small suction ports 28 on the surfaces (front sides) of the left and right front panels 20a.

[0045] Also, since the case 11 has a filter guard 24 that is disposed between the tobacco insertion space 26 and the filter 12 and protects the filter 12 from the tobacco, the filter 12 can be protected from the fire of the tobacco inserted into the tobacco insertion space 26. Therefore, a smoker can insert the tobacco into the tobacco insertion space 26 with confidence.

[0046] Further, the front surface of the filter 12 has a first region 31 at the central portion in the width direction that is covered from the front by the filter guard 24, and a second region 32 located on both sides in the width direction of the first region 31 and not covered by the filter guard 24. Also, the filter guard 24 has left and right inclined surfaces 24b that extend from the top 24a protruding forward at the central portion in the width direction toward the rear on both sides in the width direction (the side of the second region 32 of the filter 12 described later), and the central portion in the width direction is formed in a convex shape protruding forward. Therefore, the air flowing from the suction port 25 toward the second region 32 of the filter 12 can be suitably guided by the left and right inclined surfaces 24b of the filter guard 24 from the tobacco insertion space 26 to the panel rear spaces 27 on both sides in the width direction.

[0047] Further, a plurality of small suction ports 29 are formed in the left and right inclined surfaces 24b of the filter guard 24, so that smoke can also be sucked in from the small suction ports 29 of the left and right inclined surfaces 24b of the filter guard 24.

[0048] In the present embodiment, the filter guard 24 is formed in a convex shape with the central portion in the width direction protruding forward, but it is not limited to this. For example, the filter guard 24 may extend in a flat plate shape in the width direction.

[0049] Also, in the present embodiment, the filter guard 24 is provided, but the filter guard 24 may not be provided.

[0050] Also, in the present embodiment, a plurality of small suction ports 28 smaller than the suction port 25 are provided in the left and right front panels 20a, but the plurality of small suction ports 28 may not be provided. Also, in the present embodiment, a plurality of small suction ports 29 are provided in the left and right inclined surfaces 24b of the filter guard 24, but the plurality of small suction ports 29 may not be provided.

[0051] Also, in the present embodiment, the front panel 20 is formed in a concave shape that recesses from the front to the rear, but it is not limited to this, and for example, it may be formed in a flat shape.

[0052] Furthermore, in this embodiment, the left and right front panels 20a are arranged so that the suction port 25 extends in the vertical direction, but this is not limited to this. For example, the upper and lower front panels may be arranged so that the suction port 25 extends in the width direction. In this case, the filter guard 24 may also be arranged so that it extends in the width direction. Alternatively, the front panel 20 may be formed to be recessed in a funnel shape from front to rear, with the suction port 25 formed at the rear end. In this case, the filter guard 24 may be formed in a disc shape, for example, and a support member for supporting the filter guard 24 may be provided on the case 11.

[0053] Furthermore, in this embodiment, the front panel 20 is provided with one intake port 25 into which a cigarette can be inserted, but the number of intake ports 25 is not limited to this, and for example, multiple intake ports 25 may be provided.

[0054] Furthermore, in this embodiment, the case 11 is composed of a case body 14 and a front case 15 fixed to the case body 14, but it is not limited to this. For example, the case 11 may be formed by integrally molding the case body 14 and the front case 15, or the case 11 may be composed of members that are further divided than in this embodiment.

[0055] Furthermore, the placement of the filter 12 and the fan 13 are not limited to those described above.

[0056] Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can naturally be modified as appropriate without departing from the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on these embodiments are of course included in the scope of the present invention.

[0057] 10: Air purifier 11: Case 12: Filter 13: Fan 16: Ventilation path 18: Outlet 20: Front panel (intake side) 24: Filter guard 24a: Top 24b: Inclined surface 25: Intake 26: Cigarette insertion space 28: Small intake 31: First area 32: Second area

Claims

1. An air purifier comprising: a case having an air intake surface provided on one side of a predetermined direction intersecting the vertical direction, an air outlet, and a ventilation passage through which air drawn in from the intake surface and discharged from the outlet flows; a filter disposed in the ventilation passage; and a fan disposed in the ventilation passage to generate an airflow from the intake surface to the outlet, wherein the intake surface has an intake opening formed to be at least large enough to insert a cigarette and capable of drawing in outside air, and the case has a cigarette insertion space extending from the intake opening toward the other side of the predetermined direction.

2. The air purifier according to claim 1, characterized in that the suction surface is formed in a concave shape that is recessed from one side to the other side, and the suction port is formed at the bottom of the other side of the concave suction surface.

3. The air purifier according to claim 1 or 2, characterized in that the intake surface portion has a plurality of small intake ports that are smaller in size than the intake port.

4. The air purifier according to claim 1 or 2, characterized in that the filter is disposed on the other side of the cigarette insertion space, and the case has a filter guard disposed between the cigarette insertion space and the filter to protect the filter from cigarettes.

5. The air purifier according to claim 4, wherein the surface of the filter on one side has a first region covered by the filter guard from the one side and a second region not covered by the filter guard, and the filter guard has an inclined surface that slopes from the top side protruding toward the one side toward the other side toward the second region, and is formed in a convex shape protruding toward the one side.

Images