JPH1163592A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform ventilation to the periphery of an ultraviolet lamp without leakage of ultraviolet rays. SOLUTION: In this air cleaner to incorporate an ultraviolet lamp 61 in a ventilation passage and have a sterilization function by ultraviolet rays of ventilation air, the ultraviolet lamp 61 is contained in a box body (an unit case 62) having a draft hole (a slit 62f). Further, a shield member (a louvered piece 62e) is provided to prevent leakage of radiation light from the ultraviolet ray lamp 61 to the outside of the box body through the ventilation hole (the slit 62f).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier having a built-in ultraviolet lamp and having a sterilizing function using ultraviolet light.

[0002]

2. Description of the Related Art When a UV lamp is incorporated in an air cleaner, if it is incorporated as it is, the resin body case around the lamp is deteriorated by the emitted UV light.

[0003] Therefore, if the ultraviolet lamp is covered in a box shape with a metal shielding plate with little ultraviolet deterioration, it becomes difficult for the ventilation air to pass around the lamp, and the sterilizing effect cannot be expected much.

[0004]

As described above, if the ventilation air easily passes around the ultraviolet lamp, the deterioration of the ultraviolet ray on the inner wall of the ventilation path becomes larger. If the area around the ultraviolet lamp is shielded in order to reduce the number, there is a contradictory problem that it becomes difficult for ventilation air to pass through the area around the ultraviolet lamp and the sterilization effect cannot be expected much.

Accordingly, the present invention has been made to solve such a problem, and it is an object of the present invention to provide an air purifier that can effectively ventilate around an ultraviolet lamp without leaking ultraviolet light. It is the purpose.

Another object of the present invention is to prevent not only the direct ultraviolet light but also the reflected ultraviolet light from leaking.

[0007]

In order to achieve the above object, the present invention provides an air purifier having a built-in ultraviolet lamp in a ventilation passage and having a function of sterilizing ventilation air with ultraviolet light, wherein the ultraviolet lamp is A housing is provided in a box having a ventilation hole through which the ventilation air passes, and a shielding member is provided for preventing the radiation of the ultraviolet lamp from leaking out of the box through the ventilation hole.

In addition, a plurality of cut-and-raised pieces are formed on the two sides of the box, on the windward and leeward sides of the ventilation passage so as to surround the ultraviolet lamp, and the cut-and-raised pieces are formed. Corresponding parts are cut out to form the same number of slits, and this slit is used as the ventilation hole,
A cut-and-raised piece is used as the shielding member.

Furthermore, a member for preventing reflection of ultraviolet rays is attached to the inner wall of the box.

[0010] Further, the inner wall of the box is coated with a coating for preventing reflection of ultraviolet rays.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 to FIG. 5 are general structural views of an air purifier according to the present embodiment. FIG. 1 is a front view, FIG.
3 is a bottom view, FIG. 4 is a side view, and FIG. 5 is a side sectional view.

In this air purifier, a main case 1 includes a rear case 2 in which main components to be described later are incorporated, a front case 4 which covers an upper side of a front surface of the main body and has a display unit 3 on one side and which can be operated by a remote controller. It is covered with a front cover 5 detachably provided on the lower side of the front surface of the main body.

In addition, an exhaust port 6 is provided on the upper inside thereof.
Are integrally formed with a front casing 7 and a rear casing 8, and a fan casing 9 that covers a blower fan 70 described later is incorporated. The exhaust port 6 serves as an outlet during fan operation. Further, an intake port 10 is integrally formed at a lower portion, and a pre-filter 20 and a discharge unit 3 to be described later are formed.
0, an inner case 11 for detachably mounting the dust collection unit 40 and the like is incorporated. The intake port 10 is shared between the ion wind operation and the fan operation.

A switch button 12 for turning on / off the power is provided at a lower portion of one side wall of the rear case 2, and the front cover 5 is detached at an upper portion of both side walls of the front cover 5. Clamp button 1 sometimes used
3 are provided. A coil spring 13a is mounted inside the clamp button 13 as shown in FIG. 15, which will be described later.
3b is detached from the mounting holes 2a formed on both sides of the rear case 2, and the front cover 5 is detached.

As shown in FIG. 2, the front side of the front case 4 is formed in a concave shape with a concave central portion, and a convex decorative cover 5 is formed in the central portion of the front cover 5.
a is provided in the gap formed by the concave and convex shapes, the opening 1 serving as an intake port during a fan operation and an exhaust port during an ion wind operation.
4 is formed in a slit shape. This opening 14 is
A dust collecting unit 40 and a dust collecting filter 50, which will be described later,
It communicates with the ventilation passage 15 between them.

With the above configuration, both the intake port and the exhaust port during the ion wind operation become the intake ports during the fan operation, and the apparatus can be downsized accordingly. In addition, during the operation of the fan, dust stagnating below the room is effectively sucked by the intake port 10 on the lower side of the main body, and floating substances such as cigarette smoke floating above the room are effectively sucked by the opening 14. Can be removed.

Further, when the main body 1 is mounted on a wall or installed near a wall using an accessory, even if ions are emitted from the opening 14 by the ion wind operation, since the ions are emitted away from the wall, they are separated from the wall. No more dirty walls. Further, since the opening 14 is open upward, during the operation of the fan, it is possible to more effectively suction and remove floating substances such as tobacco smoke floating above.

Further, the gap formed by the concave shape of the central portion of the front case 4 and the convex shape of the decorative cover 5a attached to the central portion of the front cover 5 allows the ventilation between the dust collecting unit 40 and the dust collecting filter 50 to pass through. Since the opening 14 is formed by communicating with the path 15, the upward opening 14 can be easily formed on the front side of the device without impairing the appearance of the device.

Now, as shown in the side sectional view of FIG. 5 and the front view of FIG. 6 from which the front case 4, the fan front casing 7 and the front cover 5 are removed, the internal ventilation passages 15 are arranged in order from the bottom. A pre-filter 20, a discharge unit 30, a dust collection unit 40, a dust collection filter (electrostatic filter) 50 serving as a main filter, an ultraviolet lamp unit 60, and a blower fan 70 are arranged.

The pre-filter 20 is removably mounted inside the air inlet 10 formed on the bottom side of the main body.
It removes relatively large dust contained in the indoor air that is sucked.

As shown in a partially enlarged sectional view of FIG. 7 and a perspective view of the unit of FIG. 8, the discharge unit 30 has a discharge wire 31 for generating corona discharge and counter electrodes 32, 32 housed in a unit case 33. Is formed. The discharge unit case 33 is fully open on the lower side, and is formed and opened on the upper side with a concave portion 33a into which the frame 32a of the opposing electrodes 32, 32 is fitted.

Both ends of the discharge wire 31 are attached to the side wall of the unit case via springs (not shown), and the spring absorbs expansion and contraction of the discharge wire 31 due to linear expansion and the like, and is always straight. The discharge wires 31 can be easily removed to clean the discharge wires 31 that have become dirty due to discharge. A high voltage of +6.5 kV is applied to the discharge wire 31 from a high voltage generator 80 (see FIG. 13) installed on one side of the rear case 2.

The opposing electrode 32 is composed of a pair of ground electrodes disposed in front of and behind the discharge wire 31.
The corona discharge as shown by the dotted arrows in FIGS. 5 and 7 from the discharge wire 31 causes the dust in the air between the opposed electrodes 32 and 32 to be charged, and the dust to move upward as shown by the dashed-dotted arrows. Ion wind is generated.

In this embodiment, the opposing electrodes 32, 32
So that the lower side, that is, the discharge line 31 side is narrower, and the upper side, that is, the dust collection unit 40 side is wider,
Each is bent and formed in the frame 32a so as to be inclined.

By forming the opposing electrodes 32, 32 so as to be inclined such that the interval becomes wider upward, the interval between the discharge unit 30 and the dust collection unit 40 is narrowed as in the present embodiment. However, as shown in FIG. 7, a wide ventilation path is formed along the direction in which the ionic wind is generated by the discharge, so that it is possible to reduce the amount of the ionic wind without increasing the ventilation resistance of the ionic wind. No) and the size of the device can be reduced.

The upper surface opening 33 of the unit case 33
b, the discharge wire 31 and the dust collection unit 4
The partition wall 33c is interposed between the 0 bottom portions and has a width that does not hinder ventilation.

By providing the partition wall 33c as described above, it is possible to prevent the dust collecting paper of the dust collecting unit 40 from coming into contact with the high-voltage discharge wire 31 even if it falls due to a mounting error or the like. . In addition, the partition wall 33c can prevent a direct discharge from being generated between the discharge wire 31 and the dust collection electrode of the dust collection unit 40, and can prevent the dust collection paper in that portion from being stained by the direct discharge and quickly deteriorated. In addition, the distance between the discharge unit 30 and the dust collection unit 40 can be narrowed, and the size of the apparatus can be reduced.

Incidentally, the frame 32 of the counter electrodes 32, 32
a to the corner of the upper surface of the unit case 33
When the discharge unit 30 is mounted on the main body 1, the ground terminal 32b comes into contact with a ground terminal (not shown) on the main body side.

On the other hand, the dust collection unit 40 is shown in FIGS.
It is configured as shown in FIG. FIG. 9 shows the dust collection unit 40.
10 is a perspective view, FIG. 11 is a front view, and FIG.
Is a bottom view.

The unit case 4 of the dust collection unit 40
Reference numeral 1 denotes a main holding member 41b having a substantially U-shaped cross section and a narrow head portion, and a head portion 41c of the main holding member 41b provided with a gap between the side plates 41a and 41a. And the upper holding body 41d arranged so as to be horizontally mounted. Locking claws 41e, 41e for hooking locking holes formed in a dust collecting electrode plate described later are formed on the front and rear inner walls of the upper holding body 41d. The unit case 41 having such a shape includes a unit case front half 41.
f and the rear half 41 g of the unit case are formed by dividing and pasting.

A dust collecting electrode plate 42 serving as a ground electrode is mounted on the main holder 41b so as to cover almost the entire surface. The dust collecting electrode plate 42 is formed to have a substantially U-shaped cross section in accordance with the cross-sectional shape of the main holder 41b,
d is bent inward so as to fit on the inner wall side.
The bent portions 42a, 42a are used to connect the dust collecting electrode plate 41b to FIG.
As shown in the figure, the upper holding body 41d is formed so as to be located below the lower end of the upper holding body 41d, and a concave portion 43 is formed therebetween.

Further, in order to facilitate the mounting of the dust collecting electrode plate 42, the length from the bent portion 42a to the upper end is substantially the same as the narrowed head portion 41c of the main holding member 41b. It is formed as follows. Further, on both upper ends of the dust collecting electrode plate 42, the engaging claws 41e, 41e formed on the inner wall of the above-described upper holding body 41d in a state where the dust collecting electrode plate 42 is in close contact with the main holding body 41b. Engagement locking holes 42b, 4
2b is formed. The dust-collecting paper 44 is attached from above the dust-collecting electrode plate 42 mounted in this manner. Dust collecting paper 4
As 4, a general paper towel is used.

On the other hand, on both front and rear sides of the upper holding body 41d,
Paper holders 45, 45 extending between both side plates 41a are attached. These paper holders 45, 45 are each formed in a J-shaped cross section with the convex portions 45a, 45a at the lower ends facing inward. Also, the paper holder 45 is attached to both side edges of each paper holder 45 on both side plates 4 of the unit case 41.
A mounting piece 45b for mounting on the upper portion 1a is provided, and a rotating shaft 45c protruding outward from the mounting piece 45b is rotatably inserted into a shaft hole formed in the side plate 41a.

Further, a torsion spring 45d is mounted on one of the rotating shafts 45c, 45c on both sides of each of the paper holders 45, 45, and the torsion spring 45d is provided.
The urging force in the direction of arrow P of FIG.
5a is rotated inward from the lower side, and the upper holding body 4 described above is rotated.
1 d and the concave portion 43 formed by the dust collecting electrode plate 42 are fitted to press the dust collecting paper 44 into the concave portion 43.

At the center of the paper holder 45 in the horizontal direction, the paper holder 45 is rotated downward against the urging force of the torsion spring 45d when the dust collecting paper 44 is attached or detached, and its convex portion is formed. A knob 45e for releasing the fitted state of the 45a into the holding body side concave portion 43 is formed.

When attaching the dust collecting paper 44, first, the user holds the knob 45e of one of the paper presses 45 and turns it downward.
One end of the dust collecting paper 44 is inserted between the paper holder 45 and the upper holding body 41d, and the hand is released from the knob 45e. As a result, one end side of the dust collecting paper 44 is placed on the paper presser 4 as shown on the right side of FIG.
5 is sandwiched between the holder-side concave portions 43 by the convex portions 45a and firmly fixed. Thereafter, the dust-collecting paper 44 is brought to the opposite side so as to be attached to the dust-collecting electrode plate 42 mounted on the main holder 41b, and the other paper holder 45 is moved to the above-mentioned position as shown on the left side of FIG. Similarly, it is rotated downward, and the other end of the dust-collecting paper 44 is inserted between the dust-collecting paper 44 and the upper holding body 41 d, and is sandwiched in the holding-body-side recess 43 by the convex part 45 a of the paper holder 45. The dust collection unit 40 on which the dust collection paper 44 is set in this manner is mounted on the main body 1.

As shown in FIGS. 10 and 12, a rounded convex portion 41h is formed at the center of the outer rear side edge of both side plates 41a in the unit case 41. When the dust collection unit 40 is mounted on the main body 1 side, as shown in FIG. 13 (a cross-sectional view taken along the line AA in FIG. 5), the protrusion 41h is provided on a claw 11a formed on the rear side of the inner case 11. By being engaged, it is detachably attached to the main body 1.

Further, as shown in FIG.
A contact plate 46 that comes into contact with the ground terminal of the main body 1 when the dust collection unit 40 is mounted on the main body 1 is exposed slightly above the convex portion 41h of the main body 1a.
The contact plate 46 is mounted so as to be wound around a side plate 41a of a rear half 41g of the unit case as shown in FIG. 14 (a cross-sectional view taken along the line BB of FIG. 5). As shown by a circle b, a portion of the dust collecting electrode plate 42 that contacts the dust collecting electrode plate 42 from the inside and a ground terminal 47 attached to the rear case 2 of the main body 1 as shown by a circle b. The plate 42 serves as a ground electrode.

The dust charged by the discharge unit 30 is attracted to the dust collecting electrode plate 42 serving as a ground electrode while passing through the ventilation path of the dust collecting unit 40 by the ionic wind, and adheres to the surface thereof. The collected dust is collected on the dust collecting paper 44. The dust-collecting paper 44 which has collected a large amount of dust and turned black can be removed by pulling down the paper holder 45 by holding the knob 45e in the same manner as described above, and is replaced with a new dust-collecting paper 44.

As described above, the paper retainer 45 has its convex portion 4
5a, the dust-collecting paper 44 can be attached to the dust-collecting electrode plate 42 by pulling the dust-collecting paper 44 upward from below and sandwiching and pressing the dust-collecting paper 44 in the holder-side recess 43. Further, even after mounting, the dust collecting paper 44 is sandwiched between the convex portion 45a and the holding body side concave portion 43 and pressed against the concave portion 43 side.
The dust collecting paper 44 can be prevented from being displaced, and the dust collecting paper 44 is maintained in close contact with the dust collecting electrode plate 42.
It is possible to prevent a gap from being generated between the dust collecting electrode 4 and the dust collecting electrode plate 42 from lowering the dust collecting ability.

On the other hand, the dust collecting filter 50 arranged on the upper side of the dust collecting unit 40 is mounted on the filter frame 51 and is detachably mounted on the main body 1. Between the dust collection unit 40 and the dust filter 50, a vent 5b communicating with the above-described front side opening 14 is located.

As shown in FIG. 6, the filter frame 5
Handles 51a, 51a used for putting the filter frame 51 in and out are provided on both front sides of the front side 1. The dust collecting filter 50 is an electrostatic filter obtained by adding a deodorant such as activated carbon to a fibrous material such as a non-woven fabric charged with static electricity, and is a cross-sectional view taken along the line CC in FIG. As shown in FIG. 5 a), the filter is folded zigzag in the horizontal direction and mounted on the filter frame 51 to increase the dust collection area.

On the other hand, the ultraviolet lamp unit 60 is
As shown in FIG. 5, the ultraviolet lamp 61 is housed in a box-shaped unit case 62 that allows ventilation without leaking ultraviolet rays to the outside, and is attached to a mounting boss 63 projecting from the rear case 2 of the main body 1. It is disposed at a substantially central position of the ventilation path, and sterilizes a part of the air passing through the ventilation path.

That is, the ultraviolet lamp unit 60 is
As shown in FIG. 16 and FIG.
And a box 62a having a horizontally long upper surface opening for accommodating the ultraviolet lamp 61, and an upper lid 6 covering the upper surface opening of the box body 62a.
2b. The box body 62a and the upper lid 62b constituting the unit case 62 are made of metal which does not deteriorate even when irradiated with ultraviolet rays.

A substantially U-shaped notch is provided on both longitudinal side walls of the box 62a to support both ends of the rod-shaped ultraviolet lamp 61 and to position the ultraviolet lamp 61 in the center of the unit case 62. 62c, 62c are formed. In addition, flange-shaped members 61a, 6 fitted into the notches 62c, 62c of the box 62a are provided at both ends of the ultraviolet lamp 61, respectively.
The cutout 62c is closed when the ultraviolet lamp 61 is mounted to prevent the ultraviolet rays from leaking toward the side wall of the main body. This prevents the deterioration of the main body side wall formed of the synthetic resin by ultraviolet rays.

A bottom plate 62d located on the windward side of the box body 62a and an upper lid 62b located on the leeward side of the box body 62a include:
A plurality of cut-and-raised pieces (shielding members) 62e that are cut and raised inside so as to surround the ultraviolet lamp 61 are formed. As a result, as shown in FIG. 17, ultraviolet rays (indicated by dotted arrows) emitted from the ultraviolet lamp 61 disposed in the center of the unit case 62 do not leak directly to the outside, thereby preventing ultraviolet deterioration of the inner wall of the main body. In.

The bottom plate 62d and the upper lid 62b of the box body 62a are formed with the cut-and-raised pieces 62e as described above so that the corresponding portions are cut out to form the same number of slits (vent holes) 62f. Have been. This allows
By suction of the blower fan 70, as shown in FIG.
Ventilation (indicated by a solid arrow) passing through the inside of the unit case 62 is enabled from the bottom to the top, so that the passing air can be sterilized.

As described above, the cut-and-raised pieces 62e formed in the unit case 62 of the ultraviolet lamp 61 and the slits 62f formed thereby form the ultraviolet shielding member and the ventilation holes integrally, so that they are formed. It can be easily realized at low cost.

Further, although not shown, the inner surface of the unit case 62 is coated with a paint which is hard to reflect ultraviolet rays, for example, a fluororesin paint. This prevents not only the direct light of the ultraviolet light but also the reflected light from leaking from the slit 62f by being reflected on the inner surface of the unit case 62, thereby effectively preventing deterioration of the inner wall of the main body due to the ultraviolet light.

By applying a coating for preventing the reflection of ultraviolet rays on the inner surface of the unit case 62 as described above, measures for preventing the reflection of ultraviolet rays can be easily realized at low cost.

A mounting flange 62h having a screw hole 62g is formed at both ends of the rear wall of the box body 62a. The mounting boss 63 shown in FIG. It is attached using.

On the upper side of the ultraviolet lamp unit 60, a blow-through type fan 70 is provided. The fan 70 is provided with a rib 2b standing on the left side of the rear case 2 as shown in FIG. It is rotationally driven by a fan motor 72 attached between the side walls by a support plate 71. The other end of the rotation shaft of the fan 70 is rotatably supported by a bearing 73 attached to a rib 2 b erected on the right side of the rear case 2. The air sucked by the rotation of the blower fan 70 is supplied to an exhaust port 6 formed at the top of the main body.
From the room.

Next, the operation of the present embodiment configured as described above will be described.

First, the dust collection by the ion wind operation will be described. When the ion wind operation mode is selected by a remote control operation or the like at night when the air is not very dirty, only the power supply of the high-pressure generator 80 is turned on while the blower fan 70 and the ultraviolet lamp unit 60 are stopped.

When the high voltage generator 80 is turned on, a high voltage of +6.5 kV is applied to the discharge line 31 of the discharge unit 30, and corona discharge is generated toward the opposite electrodes 32, 32 which are ground electrodes (FIG. 5). Dotted arrow). Due to this corona discharge, an ionic wind is generated as indicated by a dashed-dotted arrow in FIG. 5, and the room air is sucked through the air inlet 10 on the bottom side of the main body.

The air sucked in from the air inlet 10 passes through the pre-filter 20 to remove relatively large dust, and then enters the discharge unit 30, where the air is discharged between the discharge line 31 and the counter electrodes 32, 32. The dust inside is positively charged. The charged dust is attracted to the dust collecting electrode plate 42 serving as a ground electrode while passing through the ventilation path of the dust collecting unit 40, and is collected by the dust collecting paper 44 adhered to the surface thereof.

The air, from which dust has been removed and which has become clean, passes through a vent 5b formed in the front cover 5 between the dust collecting unit 40 and the dust collecting filter 50, and an opening formed upward at the upper side thereof. The air is discharged from the unit 14 into the room.

As described above, since the blower fan 70 and the ultraviolet lamp unit 60 do not operate during the ion wind operation,
Silent and power-saving dust collection can be performed.

Next, dust collection by fan operation will be described. When the fan operation mode is selected by a remote control operation or the like during the day when the air is easily polluted or during smoking, the ultraviolet lamp 61 is energized together with the fan motor 72. The high-voltage generator 80 is not energized and the discharge unit 30
Does not work.

When the blower fan 70 rotates, the suction force causes the air below the room to flow through the intake port 10 on the bottom side of the main body, and the air above the room to blow the ionic wind as shown by the solid arrow in FIG. During operation, each is taken into the inside of the main body from the opening 14 functioning as an exhaust port.

After the relatively large dust is removed by the pre-filter 20, the air sucked from the suction port 10 on the bottom side of the main body passes through the discharge unit 30 and the dust collection unit 40 and is sucked into the dust collection filter 50. It is. In addition, the air above the room sucked from the opening 14 formed upward on the front surface of the main body is sucked into the dust collection filter 50 through the ventilation port 5 b formed in the front cover 5.

Since the dust collecting filter 50 is an electrostatic filter, it also collects fine dust and tobacco smoke and the like, and the odor of cigarettes is deodorized by activated carbon.

The air from which fine dust and odor have been removed by the dust collecting filter 50 has a part thereof in the ultraviolet lamp unit 60.
And sterilized. UV lamp unit 60
The air that has been sterilized in the above and the air that has passed before and after the air are exhausted indoors from the upper exhaust port 6 via the blower fan 70. Note that only a part of the air is supplied from the ultraviolet lamp unit
Even if the air does not pass through, the air that has not been sterilized circulates and is sucked in again, so that the air in the entire room is sterilized over time.

As described above, when the fan is operating, the ultraviolet lamp unit 60 operates together with the blower fan 70, so that quick sterilization and dust collection can be performed.

During the operation of the fan, the opening 14 formed on the front surface of the main body 1 serving as the exhaust port and serving as the exhaust port during the operation of the ion wind.
Since the air also serves as an air intake port, it is possible to remove dust staying in the lower part of the room, and more effectively suck and remove floating substances such as cigarette smoke floating in the upper part of the room.

The ultraviolet lamp unit 60 allows ventilation around the ultraviolet lamp 61 while almost completely preventing ultraviolet rays from leaking out of the unit case 62, so that the inner wall of the main body case is not deteriorated by ultraviolet rays. An effective bactericidal effect can be obtained.

In the above-described embodiment, only the ion wind operation mode for operating only the discharge unit 30 and the fan operation mode for operating the blower fan 70 and the ultraviolet lamp unit 60 are provided for simplification of operation and configuration. However, a mode for further operating the discharge unit 30 during the operation of the fan may be provided. In this case, the dust collection unit 40
Since the dust collecting operation of a different type is performed in both the dust collecting filter 50 and the dust collecting filter 50, improvement in dust collecting performance can be expected.

In the above-described embodiment, a positive high voltage is applied to the discharge line 31. However, a similar effect can be obtained by applying a negative high voltage.

In the above embodiment, the ultraviolet lamp 6
The unit case 62 accommodating the unit case 62 is disposed substantially at the center of the ventilation path, and a portion of the air passing through the ventilation path is sterilized. May be arranged. In this case, although the ventilation resistance increases, the suction force by the fan 70 is large and there is no problem, and the entire ventilation air can be sterilized, so that the sterilizing effect can be improved.

[0071]

As described above, according to the present invention, the ultraviolet lamp is housed in the box having the ventilation hole through which the ventilation air passes, and the radiation of the ultraviolet lamp leaks out of the box through the ventilation hole. Is provided, the ventilation can be effectively performed around the ultraviolet lamp without leaking the ultraviolet rays, and a sufficient sterilizing effect can be obtained while preventing the ultraviolet ray deterioration of the inner wall of the ventilation path.

Further, a plurality of cut-and-raised pieces are formed on two sides of the box body, on the windward and leeward sides, so as to surround the ultraviolet lamp, and the cut-and-raised pieces are formed. Corresponding parts are cut out to form the same number of slits, and this slit is used as the ventilation hole,
Since the cut-and-raised pieces are used as the shielding members, they can be easily realized at low cost.

Further, since a member for preventing the reflection of ultraviolet rays is attached to the inner wall of the box, not only the direct light of ultraviolet rays but also the reflected light can be prevented from leaking, and the deterioration of ultraviolet rays on the inner wall of the ventilation path can be more effectively prevented. Can be prevented.

Further, since the inner wall of the box is coated to prevent the reflection of ultraviolet rays, measures for preventing the reflection of ultraviolet rays can be easily realized at low cost.

[Brief description of the drawings]

FIG. 1 is a front view of an air purifier according to an embodiment of the present invention.

FIG. 2 is a top view of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is a side sectional view of the same.

FIG. 6 is a front view showing the internal configuration of the embodiment.

FIG. 7 is a partially enlarged sectional view of FIG. 5;

FIG. 8 is a perspective view of a discharge unit.

FIG. 9 is a side sectional view of the dust collection unit.

FIG. 10 is a perspective view of the same.

FIG. 11 is a front view of the same.

FIG. 12 is a bottom view of the same.

FIG. 13 is a sectional view taken along the line AA of FIG. 5;

FIG. 14 is a sectional view taken along the line BB of FIG. 5;

FIG. 15 is a cross-sectional view taken along the line CC of FIG. 6 (the front cover is attached).

FIG. 16 is an exploded perspective view of the ultraviolet lamp unit.

FIG. 17 is a side sectional view of the ultraviolet lamp unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Rear case 4 Front case 5 Front cover 5a Decorative cover 5b Vent 6 Exhaust port 10 Intake port 11 Inner case 14 Opening 15 Ventilation path 20 Prefilter 30 Discharge unit 31 Discharge line 32 Counter electrode 33c Partition wall 40 Dust collection unit 42 dust collecting electrode plate 43 concave portion 44 dust collecting paper 45 paper holder 50 dust collecting filter 60 ultraviolet lamp unit 61 ultraviolet lamp 62 unit case 62e cut and raised piece 62f slit 70 blower fan 80 high pressure generator

Continuation of front page (72) Inventor Koji Tabuchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yoshiaki Matsumoto 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. An air purifier having a built-in ultraviolet lamp in a ventilation path and having a function of sterilizing the ventilation air with ultraviolet rays, wherein the ultraviolet lamp is housed in a box having a ventilation hole through which the ventilation air passes. An air purifier comprising a shielding member for preventing radiation of the ultraviolet lamp from leaking out of the box through the ventilation hole. 2. A plurality of cut-and-raised pieces which are cut and raised inward so as to surround an ultraviolet lamp are formed on two surfaces of a wind passage on the windward and leeward sides of the box, and the cut-and-raised pieces are formed. The air purifier according to claim 1, wherein a corresponding portion is cut out to form the same number of slits, the slits are used as the ventilation holes, and cut-and-raised pieces are used as the shielding members. 3. The air purifier according to claim 1, wherein a member for preventing reflection of ultraviolet rays is attached to the inner wall of the box. 4. The air purifier according to claim 3, wherein the inner wall of the box is coated with a paint for preventing reflection of ultraviolet rays.