JP2002058940A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display different information such as the dirt level of air and the number of the revolution of a blower in a limited display space and to enable a user to easily understand the contents of the information though the air cleaner is placed far away from the user by the color change of the whole display panel. SOLUTION: In the air cleaner in which the number of the revolution of the blower is controlled in accordance with the dirt level of air detected by a dirt detecting sensor for detecting the dirt of air, a liquid crystal display panel for displaying the dirt level of air and the level of the number of the revolution of the blower is provided, the dirt level of air is displayed by the variation of the patterns 85 and 86 of a liquid crystal display panel and the level of the number of the revolution of the blower is displayed by providing plural LEDs emitting light of different colors on the rear side of the liquid crystal display panel and varying the color of the whole liquid crystal display panel by the light emission of these LEDs.

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 control unit for controlling a rotation speed of a blower according to an air contamination level, and more particularly to an air purifier and a rotation speed level of the blower. Related to the display.

[0002]

2. Description of the Related Art Conventionally, there is provided a dirt detecting sensor for detecting dirt of air, and the intensity of driving, that is, the rotation speed of a blower, is controlled in accordance with the dirt level of air detected by the dirt detecting sensor. Purifiers are generally known. In this air purifier, for example, Japanese Unexamined Patent Application Publication No.
As shown in Japanese Patent Publication (B01D46 / 42), in order to let the user know the air contamination level and the rotation speed level of the blower, these are displayed at different places using indicator lights such as LEDs. Was.

[0003] When the air contamination level and the rotation speed level of the blower are displayed in this manner, the contents of the display can be determined when the user is near the air purifier, but the air purifier is separated. If it is placed in a place
There is a problem that the display lamp is small and it is difficult to determine the content of the display. Further, since the air contamination level and the rotation speed level of the blower are separately displayed at different places, a large display space is required.

[0004]

SUMMARY OF THE INVENTION According to the present invention, the air contamination level and the rotational speed level of the blower can be displayed in an easy-to-understand manner even in a limited display space. It is an object of the present invention to provide an air purifier provided with a display means capable of easily displaying the contents even when placed.

[0005]

According to the present invention, there is provided a blower that discharges air from an outlet after purifying and purifying outside air from an air inlet, a dirt detecting sensor for detecting dirt of air, and a dirt detecting sensor for detecting dirt of the air. An air purifier provided with a control unit for controlling the rotation speed of the blower according to the air contamination level, and a display panel for displaying the air contamination level and the rotation speed level of the blower. One of the dirt level and the rotation speed level of the blower is displayed by changing the pattern on the display panel, and the other is displayed by changing the color of the entire display panel.

[0006] With this configuration, different information such as the air contamination level and the rotation speed level of the blower is displayed based on a change in the pattern on the display panel and a change in the color of the entire display panel. Two different types of information can be displayed. In addition, one of them is a change in color of the entire display panel, so that even if the air purifier is installed at a place away from the user, it is easy to determine the contents. Therefore, it is preferable to display, among the air contamination level information and the rotation speed level information of the blower, those which are particularly important, by changing the color of the entire display panel.

Specifically, in the present invention, the display panel is constituted by a liquid crystal display panel, and a plurality of LEDs for emitting different colors are provided on the back side of the liquid crystal display panel. Try to change the color.

[0008] As a specific example of the display, the rotation speed level of the blower is displayed as a color change of the entire liquid crystal display panel by emitting light from the LED, and the dirt level of the air is displayed by a pattern change of the liquid crystal display panel.

According to such a display method, when the dirt detection sensor comprises a plurality of sensors for detecting different types of dirt, the dirt level of the air detected by each dirt detection sensor is changed by the pattern change of the liquid crystal display panel. Can be displayed.

Further, when the rotation speed of the blower is controlled at a higher detection level among the detection levels of the plurality of sensors for detecting the different types of dirt, the dirt level of the air detected by each dirt detection sensor is determined. Each of them is displayed by changing the pattern of the liquid crystal display panel, and the set rotation speed can be displayed by changing the color of the entire display panel, which is convenient.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air purifier according to the present invention will be described with reference to the drawings showing one embodiment. The air purifier main body case 1 includes a front cover 2, a rear cover 4 having a grill-like discharge port 3 formed on one side of an upper surface, and an upper cover 7 on which various operation buttons 5 and a display unit 6 described later are formed. An outer shell is formed from. The front cover 2 is provided with a punching metal 9 having a large number of small holes 8 serving as intake ports formed on the entire surface thereof. The front cover 2 is formed so that outside air is sucked into the main body through the small holes 8. A large lattice-shaped opening 10 is formed.

The inside of the main body case 1 is partitioned forward and backward by a partition plate 11, and a filter device 12 for collecting and deodorizing air is built in between the partition plate 11 and the front cover 2, and the partition plate 11 and the rear cover are provided. A blower 15 including a motor 13 and a fan 14 rotated by the motor is built in between the four. The motor 13 is mounted on the partition plate 11. The periphery of the fan 14 is surrounded by a spiral fan casing 16 projecting integrally from the rear cover 4, and the inside of the fan casing 16 communicates with the discharge port 3.

When the blower 15 is driven, the outside air is sucked through the small holes 8, and the sucked outside air is collected and deodorized by the filter device 12 to be purified, and passes through the fan casing 16. From the discharge port 3.

The filter device 12 includes a pre-filter 1
7, a dust collecting filter 18 and a deodorizing filter 19.

As shown in FIG. 4, the pre-filter 17 is composed of a lattice-shaped synthetic resin frame 20 and a filter material 21 made of a non-woven fabric held on the frame 20. On both left and right sides of the frame 20, filter holding plates 22 are rotatably mounted. That is, shafts 23 are integrally formed on the filter holding plate 22 at the upper and lower ends and a central portion thereof, and the shafts 23 are received by the bearings 24 formed on the frame 20 and further pressed by the retaining portions 25. The filter holding plate 22 is attached to the frame 20 (see FIGS. 5 and 6). Then, the filter material 21 is held on the frame 20 by sandwiching the left and right sides of the filter material 21 between the frame 20 and the filter pressing plate 22.

The upper and lower ends of the filter holding plate 22 are held by the claws 26 formed on the frame 20 in a closed state as shown in FIGS. 5 and 6. By releasing the engagement with the pawl 26, the filter press plate 22 can be rotated clockwise in FIG. The filter material 21 is represented by a two-dot line in FIGS.

The dust collecting filter 18 is formed by processing an electretized polypropylene nonwoven fabric into a fold and folding the periphery thereof to a paper frame.

As shown in FIGS. 7 and 8, the deodorizing filter 19 is fixed to a substrate 30 made of a nonwoven fabric to which an adhesive is applied, covered with a nonwoven fabric 31, colored blue, and impregnated with polyphenols. First deodorizing layer 33 made of cellulose beads 32, and second deodorizing layer 34 consisting of a nonwoven fabric layer impregnated with citric acid and chemically deodorizing ammonia.
A third deodorization formed by closing the openings at both ends of the honeycomb structure 35 made of paper with nonwoven fabrics 36 and 37 to form a large number of small chambers 38 and storing the activated carbon particles 39 in the small chambers 38. It comprises a layer 40 and a paper frame 41 for fixing the outer periphery of the first to third deodorizing layers. The activated carbon particles 39 are composed of a plurality of types in which components corresponding to each of a basic gas, a neutral gas, and an acidic gas are impregnated.

The third deodorizing layer 40 is formed by applying an adhesive to one end surface 42 of the honeycomb structure 35 and bonding a nonwoven fabric 36 to the honeycomb structure 35. The honeycomb structure 35 is formed by adhering the nonwoven fabric 37 to which the adhesive and the adhesive have been applied to the other end face of the honeycomb structure 35, and as a result, the activated carbon particles 39 in the small chamber 38.
Is adhered to the non-woven fabric 37 so as not to move.

The deodorizing filter 19 and the dust collecting filter 18 are stored in a filter storage chamber 43 formed in the partition plate 11 so that the deodorizing filter 19 is located on the leeward side.
7 is arranged on the windward side of the dust collecting filter 18.

Then, in the outside air sucked from the intake port 8, coarse dust is first captured by the pre-filter 17, then fine dust is removed by the dust collecting filter 18, and flows into the deodorizing filter 19. In the deodorizing filter 19, first, a specific odor, mainly a body odor called an aging odor, is removed by the cellulose beads 32, and subsequently, the ammonia component is chemically adsorbed by the nonwoven fabric layer 34. The last remaining odor component is activated carbon particles 3.
9 and exits from the discharge port 3. Here, the removal of the ammonia component is regarded as important, and the non-woven fabric layer 34 as the second deodorizing layer is made compatible with ammonia. It can also be.

The arrows in FIG. 8 indicate the flow of the wind. However, the flow of the wind may flow from the third deodorizing layer 40 to the first deodorizing layer 33, contrary to FIG.

The pre-filter 17 includes the dust filter 1
8 is arranged on the windward side in the following manner.

Claws 45 shown in FIG. 4 are protruded above and below the frame body 20 of the pre-filter 17, and engagement holes 46 into which the claws 45 are formed are formed at the lower end of the partition plate 11. , FIG. 9). The display section 6 provided on the upper cover 7 has an elliptical front shape as is apparent from FIGS. 1 and 3, and a lower portion 6 a thereof is located in front of a filter storage chamber 43 formed in the partition plate 11. As a result, a gap 47 is formed between the filter and the dust collecting filter 18 (see FIGS. 2 and 10).

Therefore, in order to install the pre-filter 17,
The upper end of the frame 20 is inserted into the gap 47, and the frame 2
The frame 20 is held so as not to come off by inserting the claw 45 at the lower end of the zero into the engagement hole 46. Since the frame body 20 is vertically symmetrical, it can be similarly installed on the windward side of the dust collection filter 18 even if it is turned upside down.

The filter storage chamber 43 of the elliptical display section 6
The back side of the overlapped portion is closed with a back cover 48, which can be easily inserted when inserting the pre-filter frame 20 into the gap 47, as is apparent from FIG. As described above, the taper 48a is provided so as to go forward (toward the front cover 2) as it goes down, so that the frame body 20 can be inserted smoothly. Thus, the pre-filter 17 can be easily installed.

As shown in FIG. 3, projecting portions 49, 49 are formed on the left and right sides of the filter storage chamber 43 formed in the partition plate 11, and extend forward (toward the front cover 2). These protruding portions protrude more toward the front cover 2 than the pre-filter 17 and serve for positioning in the left-right direction when the pre-filter 17 is installed. One of the protrusions 49
Inside, a dust sensor 50 for detecting dust in the air is mounted. The dust sensor 50 is a so-called well-known photoelectric sensor that converts the amount of light reflected by dust into an electric signal. 51
Is a small hole provided in the protrusion 49 for taking in dust. Since the small holes 51 are located ahead of the pre-filter 17, the dust in the outside air sucked from the intake port 8 is guided to the dust sensor 50 from the small holes 51 before being captured by the pre-filter 17, and accurate. The amount of dust can be detected.

An air-permeable urethane sheet 52 is attached to the back side of the punching metal 9 so as to cover the back side, so that the punching metal 9 which is a metal does not directly hit the front cover 2 made of synthetic resin. ing. This prevents chattering between the punching metal 9 and the front cover 2 due to vibration during operation. Further, the dirty pre-filter 17 in the main body case is not seen through the small hole 8.

Next, the display section 6 will be described.

The display unit 6 has an outer shape in which a part of the upper cover 7 is bulged 6b toward the near side in an elliptical shape, and the back side of the lower part 6a of the bulged part 6b is closed with the back cover 48. I have. Then, a circular viewing window 53 provided at the center of the bulging portion 6b, a transparent lens 54 attached to the viewing window 53, a liquid crystal display panel 55, and a space between the liquid crystal display panel 55 and the lens 54 are formed on the outside. And a board 57 for shielding from the space of
The main components are a holder 58 for attaching the liquid crystal display panel 55 to the substrate 57, and a plurality of LEDs 59 attached at positions surrounded by the holder 58 on the substrate 57.

The liquid crystal display panel 55 has a substantially square shape as shown in FIG. 12, and a portion (actual display portion 55a) actually used as a display portion has a circular shape. Holder 58
As shown in FIG. 10, FIG. 11, FIG. 13, and FIG. 17, a flat portion 60 on which the liquid crystal display panel 55 is mounted, and a conical portion shaped like a mortar so that the diameter decreases from the flat portion 60 toward the substrate 57. 61 and the liquid crystal display panel 5 mounted on the flat portion 60
5 is provided with a holding portion 62 for holding the liquid crystal display panel so as not to jump out by pressing around the periphery of the liquid crystal display panel 5, and a pair of left and right locking claws 63 protruding toward the substrate 57.

The liquid crystal display panel 55 is placed on the flat portion 6 of the holder 58.
0 and the holder 62 in the direction of arrow A in FIG.
The state is as shown in FIG. At this time, the holding portion 62 comes outside the circular real display portion 55a (see FIGS. 14 and 16).
With the holder 58 in this state, the locking claw 63 is
The liquid crystal display panel 55 is mounted on the substrate 57 via the holder 58 by engaging with the holes 64 provided in the. At the same time, the small diameter side of the conical portion 61 of the holder comes into contact with the substrate 57, and the LED 59 group is located inside the conical portion 61. The terminal 65 of the liquid crystal display panel 55 is connected to the substrate 57.
On the back surface of the liquid crystal display panel 55, a diffusion sheet 66 for diffusing the light of the LEDs 59 throughout is attached (see FIG. 10).
The light of the LED 59 irradiates the liquid crystal display panel 55 uniformly without leaking by the conical portion 61 and the diffusion sheet 66, and when viewed from the lens 54 side, the entire liquid crystal display panel 55 has a specific color.

The shielding board 56 has a holder 5 on its outside.
And a mortar-shaped conical portion 67 whose diameter increases from the circular real display portion 55a of the liquid crystal display panel 55 toward the lens 54 so that the holding portion 62 of FIG.
And a flange portion 68 is fixed to the back side of the elliptical bulging portion 6b with a screw 69 as shown in FIG. The lens 54 is sandwiched between the shielding board 56 and the edge of the circular viewing window 53 of the upper cover. Further, the edge of the circular viewing window 53 is set on the extension line L of the conical portion 67 as shown in FIG.

The conical portion 67 of the shielding plate 56 prevents the inside from being seen from the gap between the lens 54 and the liquid crystal display panel 55 when the liquid crystal display panel 55 is viewed through the lens 54, and the inclination angle is set to the viewing angle. Determined in consideration of the angle. That is, the liquid crystal display panel 55 is not always seen from the front, and the display content can be easily determined if the angle is within a certain angle from the front direction. If this angle is set as the viewing angle, as shown in FIG. Reference numeral 67 denotes an inclination angle having a spread larger than the viewing angle. Therefore, a display range (actual display unit 55a) that can be easily recognized when the user looks in the range of the viewing angle.
Can be increased.

If the inclination angle is zero or less than the viewing angle as shown in FIG. 19, it is not possible to cope with a case where the user looks through the viewing angle unless the range of the actual display section 55a is narrowed. If the range of the actual display portion is reduced, the size of the liquid crystal display panel 55 cannot be effectively used for display. However, if the inclination angle is set to be equal to or larger than the viewing angle, such a problem is eliminated.

In the case of this embodiment, the liquid crystal display panel 55 is substantially square, the actual display section 55a is circular, and the periphery (particularly, the corner) of the liquid crystal display panel 55 other than the actual display section is the holding section of the holder 58. 62, the liquid crystal display panel 5
The size of 5 can be effectively used for display.

The liquid crystal display panel 55 shown in FIGS. 1 and 3 and FIG.
6, the pattern of the liquid crystal display panel 55 is different from that of FIG. 1, FIG. 3 and FIG.
2, FIG. 14 and FIG. 16 are simplified patterns.

The LED 59 group includes an LED that emits red light and an LED that emits green light.
The mode is switched between a case in which only D emits light, a case in which only green LED emits light, and a case in which both LEDs emit light.
When both are emitted, it looks yellow.

As shown in FIG. 11, the back cover 48 of the display unit 6 is fixed to the back side of the elliptical bulging portion 6b, that is, the upper cover 7 at a plurality of places by screws 70, 71. Reference numeral 71 is screwed to the partition plate 11 together with the upper cover 7. This is because when the upper end of the pre-filter 17 is inserted into the gap 47 between the back cover 48 and the dust collecting filter 18, even if a force is applied by the pre-filter 17 to push the entire display unit 6 toward the user. By fixing the display unit to the partition plate 11, the entire display unit is prevented from being pushed out to the front, and the strength is increased.

A plurality of protrusions 72 are formed on the back cover 48, and the back side of the substrate 57 contacts the protrusions 72. This is for receiving the substrate 57 and protecting the substrate 57 when the display unit 6 is pushed inward via the lens 54.

The entire substrate 57 has the shape shown in FIG. 15, and is fixed to the upper cover 7 in place by screws. Said L
On the side opposite to the ED 59 group, switches 73 corresponding to the plurality of operation buttons 5 and a gas sensor 7 for detecting reducing gas are provided.
4 etc. are attached. The gas sensor 74 is a well-known sensor that reacts with the reducing gas in the air, and detects contamination of the air by detecting the gas.

In FIG. 11, reference numeral 75 designates the front cover 2 as the partition plate 11;
One end 76 is engaged with the front cover 2, and the other end 78 is engaged with an engaging hole 79 formed in the partition plate 11 via a U-shaped spring portion 77. You.
By pressing the push button 80 protruding in the middle, U
The clamp is deformed against the elasticity of the U-shaped spring portion 77, the engagement between the other end 78 and the engagement hole 79 is released, and the front cover 2 can be removed from the partition plate 11. When the front cover 2 is mounted, the other end 78 may be pushed toward the engagement hole 79.

FIG. 21 is a block diagram of an electric circuit according to the present invention. Reference numeral 81 denotes a control unit comprising a microcomputer.
In addition, output signals from the dust sensor 50 and the gas sensor 74 are input, and signals from the various operation buttons 5 are input. Based on these signals, the control unit 81 sends signals to the motor drive circuit 82, the LED drive circuit 83, and the liquid crystal drive circuit 84 to rotate or stop the motor 13 at low, medium, and high speeds. Further, the liquid crystal display panel 55 is lit in each pattern by the liquid crystal drive circuit 84 according to the situation, and the LED 59 group is lit in green, red and yellow by the LED drive circuit 83.

Next, how to display on the liquid crystal display panel 55 will be described.

As shown in FIG. 20, the liquid crystal display panel 55 includes a pattern 85 indicating the degree of gas concentration detected by the gas sensor 74 and a pattern of the amount of dust detected by the dust sensor 50 as an indicator of the degree of air contamination. Are arranged separately on the left and right, respectively, and the "smell" and "dust"
It is represented as Each of the patterns 85 and 86 is formed of a concentric triple １ ／ arc (specifically, each single is further tripled as shown in FIG. 12).
Sends a signal to the liquid crystal drive circuit 84 such that the higher the gas concentration and the greater the amount of dust, the more the area outside is lit.

The control section 81 is provided with a gas sensor 74.
The rotation speed of the blower 15 is automatically controlled to a low speed, a medium speed, and a high speed in accordance with the detection level of the dust sensor 50, in other words, the operation mode is switched between "weak operation", "medium operation", and "strong operation". However, this change in the operation mode is caused by the LE
The display is performed by turning on the D59 group and changing the color of the entire liquid crystal display panel 55.

That is, in the case of "weak operation", the control section 81 sends a signal to the LED drive circuit 83 so that the green LED of each LED 59 is turned on. In the case of the LED driving circuit 83, the green LED and the red LED of each LED 59 are turned on.
Is transmitted to the LED driving circuit 83 so that the red LED of each LED 59 is turned on in the case of "strong operation". As a result, the entire liquid crystal display panel 55 is turned on. Make it red.

FIG. 20 summarizes these relationships. In the upper part, the level of dust detected by the dust sensor 50 is slightly changed (<<), the change of the "dust" pattern 86, the change of the operation mode, and the change of the color (backlight color) of the entire liquid crystal display panel 55. And the gas concentration (odor level) detected by the gas sensor 74 is shown in the lower part.
The change of the “smell” pattern 85, the change of the operation mode, and the change of the color (backlight color) of the entire liquid crystal display panel 55 according to the level of (<<) are shown.

By the way, the control section 81 controls the blower 15
Is controlled in accordance with the higher one of the detection levels of the gas sensor 74 and the dust sensor 50.
For example, if the “dust level” detected by the dust sensor 50 is “odor level” detected by the gas sensor 74, the “dust” pattern 86 lights up only the innermost area and the “odor” pattern Numeral 85 lights up all the outermost areas. In addition, the rotation speed of the blower 15 becomes high and becomes “strong operation”,
The entire liquid crystal display panel 55 turns red.

FIG. 22 is a flowchart showing the flow of the display method, which will be described below with reference to FIG. First, the values of the dust sensor 50 and the gas sensor 74 are read (S
1). Next, it is determined whether or not the “odor level” by the gas sensor 74 is equal to or greater than (S2). If so, the rotation speed of the blower 15 is increased to set the "strong operation" mode, and the red LED is turned on to turn the backlight of the liquid crystal display panel 55 red. At the same time, the "smell" of the LCD panel 55
The pattern 85 is turned on in all three areas up to the outermost side (S3).

If the "odor level" is lower than (S2), it is determined whether or not the "dust level" by the dust sensor 50 is higher (S4). If it is above, while increasing the rotation speed of the blower 15 to the "strong operation" mode,
The red LED is turned on to turn the backlight of the liquid crystal display panel 55 red. At the same time, the "dust" pattern 86 of the liquid crystal display panel 55 is turned on in all three areas up to the outermost side (S
5).

If the "dust level" is lower than (S4), it is determined whether or not the "odor level" by the gas sensor 74 is higher (S6). If it is above, while the rotation speed of the blower 15 is set to the medium speed to set the “medium operation” mode,
The green LED and the red LED are turned on to make the backlight of the liquid crystal display panel 55 yellow. At the same time, the "smell" pattern 85 of the liquid crystal display panel 55 is turned on to two central areas (S7).

If the "odor level" is lower than (S6), it is determined whether or not the "dust level" by the dust sensor 50 is higher (S8). If it is above, while the rotation speed of the blower 15 is set to the medium speed to set the “medium operation” mode,
The green LED and the red LED are turned on to make the backlight of the liquid crystal display panel 55 yellow. At the same time, the "dust" pattern 86 of the liquid crystal display panel 55 is turned on to two central areas (S9).

If the "dust level" is equal to or less than "Dust level" in (S8), it is determined that the "dust level" by the dust sensor 50 and the "odor level" by the gas sensor 74, and the rotation speed of the blower 15 is reduced to "low operation". Mode, and the green LED is turned on to make the backlight of the liquid crystal display panel 55 green. At the same time, the "smell" of the LCD panel 55
And the "dust" patterns 85 and 86 are turned on for only one innermost area (S10).

By such a flow, the dust sensor 50
And the gas sensor 74 always detects air contamination,
The detected air dirt and the operation mode are displayed. Different types of air dirt detected by the dust sensor and the gas sensor are displayed on the liquid crystal display panel 55 by individual pattern changes, Since the operation mode, that is, the rotation speed of the blower, is displayed by the color change of the entire liquid crystal display panel, a plurality of information can be efficiently displayed within the limited space of the display unit. In addition, since the color of the entire liquid crystal display panel can be determined even from a position far away, the operation mode can be easily determined even from a distance.

In the above embodiment, two sensors of different types are used to detect air contamination. However, a single sensor may be used, or a sensor other than a dust sensor and a gas sensor, for example, a movement of a human body. A sensor or the like for detecting the frequency can also be used. Further, the contamination of air may be represented by a color change of the entire liquid crystal display panel, and the operation mode may be represented by a pattern change of the liquid crystal display panel.

[0057]

According to the present invention, a display panel for displaying an air contamination level and a rotation speed level of a blower is provided, and the control section displays one of the air contamination level and the rotation speed level of the blower on the display panel. Since the display is made by changing the pattern and the other is displayed by changing the color of the entire display panel,
Different information such as air contamination level and blower rotation speed level can be displayed by changing the pattern on the display panel and changing the color of the entire display panel. Two types of different information can be easily understood in a limited display space. Can be displayed.

Further, one of them is a color change of the entire display panel. Therefore, even if the air purifier is installed at a place remote from the user, the contents can be easily determined, and therefore, the air stain level information and the air contamination level information can be easily determined. Among the rotational speed level information of the blower, information that is considered particularly important may be displayed by color change of the entire display panel.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of the entire air cleaner.

FIG. 3 is a front view of the air cleaner with a front cover removed.

FIG. 4 is a front view showing a prefilter of the air purifier.

FIG. 5 is an enlarged view inside a circle A of FIG. 4;

FIG. 6 is a sectional view based on the line AA in FIG. 5;

FIG. 7 is a partially enlarged plan view of a deodorizing filter used in the air purifier of the present invention, as viewed from the leeward side, with a part cut away to show the inside.

FIG. 8 is a partially enlarged longitudinal sectional view of the deodorizing filter.

FIG. 9 is an enlarged sectional view inside a circle B of FIG. 2;

FIG. 10 is an enlarged sectional view inside a circle C of FIG. 2;

FIG. 11 is an enlarged cross-sectional view of a display unit of the air purifier of the present invention.

FIG. 12 is a front view of a liquid crystal display panel used for the display unit.

FIG. 13 is a front view of a holder used for the display unit.

FIG. 14 is a front view showing a state where a liquid crystal display panel is inserted into a holder of the display unit.

FIG. 15 is a front view of a substrate used for the display unit.

FIG. 16 is a front view showing a state where a liquid crystal display panel is attached to a substrate of the display unit.

17 is an enlarged vertical sectional view of a position of the display unit different from that of FIG. 10 (corresponding to a position along line BB in FIG. 16).

FIG. 18 is an explanatory diagram showing a relationship between a liquid crystal display panel and a shield panel of the display unit.

FIG. 19 is a diagram corresponding to FIG. 18, which is different from the present invention.

FIG. 20 is a diagram showing the relationship between the air contamination level and the display on the display unit according to the present invention.

FIG. 21 is an electric circuit block diagram of the present invention.

FIG. 22 is a flowchart showing the operation of the display unit of the present invention.

[Explanation of symbols]

 Reference Signs List 8 small hole (intake port) 3 discharge port 13 motor 15 blower 50 dust sensor (air dirt sensor) 74 gas sensor (air dirt sensor) 81 control unit 55 liquid crystal display panel (display panel) 85 "smell" pattern 86 "dust" pattern 59 LED 82 Motor drive circuit 83 LED drive circuit 84 Liquid crystal drive circuit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) // A61L 9/16 A61L 9/16 D (72) Inventor Yoshihide Nakagawa 2-chome Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Inventor Masaaki Hasegawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 2G046 AA01 BD01 BH02 BH04 CA09 DC13 2G060 AA01 AA02 AB26 AE09 HC07 HC22 HD01 3L056 BD01 BD07 BE01 4C080 AA05 BB02 BB04 CC08 HH05 JJ03 KK08 MM05 MM14 MM15 NN24 NN27 QQ17 QQ20 4D058 JA01 JA51 JB13 JB14 JB25 KB11 KC01 SA01 TA04

Claims (6)

[Claims] 1. A blower that discharges air from an outlet after suctioning and purifying outside air from an inlet, a dirt detection sensor that detects dirt of air, and a dirt level of air detected by the dirt detection sensor. In an air purifier including a control unit that controls the rotation speed of the blower, a display panel that displays a dirt level of air and a rotation speed level of the blower,
An air purifier configured to display one of a contamination level of air and a rotation speed level of a blower by changing a pattern on the display panel, and display the other by changing a color of the entire display panel. . 2. The display panel comprises a liquid crystal display panel, and a plurality of LEDs for emitting different colors are provided on the back side of the liquid crystal display panel, and the color of the entire liquid crystal display panel is changed by the light emission of the LEDs. The air purifier according to claim 1. 3. The air purifier according to claim 2, wherein a rotation speed level of the blower is displayed by the light emission of the LED, and a dirt level of the air is displayed by a pattern change of a liquid crystal display panel. 4. The dirt detection sensor includes a plurality of sensors for detecting dirt of different types, and displays the dirt level of air detected by each dirt detection sensor by a pattern change of the liquid crystal display panel. The air purifier according to claim 3, wherein: 5. The control unit controls the rotation speed of the blower at a higher detection level among the detection levels of the plurality of sensors that detect the different types of dirt, and displays the rotation speed on the entire display panel. The air purifier according to claim 4, wherein the display is made based on a change in color of the air purifier. 6. The air purifier according to claim 4, wherein the plurality of dirt detection sensors include a dust sensor for detecting dust in air and a gas sensor for detecting reducing gas in air.