TWI633258B - Air purifier - Google Patents

Abstract

The air cleaner has: a main body casing; a fan for taking in air; an air purifying filter for purifying air; a human detection device for detecting the position of the person; and a control mechanism for controlling the person detection device. The human detection device includes: an infrared detector (55b); a detector holder (551b) formed of a material that transmits infrared rays; and a housing (55a) that houses the infrared detector (55b) and the detector holder Shelf (551b). The housing (55a) is formed with an infrared receiving opening (554a) that opens forward. The infrared access opening (554a) is an opening that is close to a finger's contact with the detector holder (551b).

Description

Air cleaner

The present invention relates to an air cleaner for purifying indoor air.

Previously, there are air cleaners provided with a detector having a scanning chamber to detect the directionality of a person, and a rotating mechanism that causes the suction port to face the direction of the person detected by the detector. This air cleaner is provided with a control board on the upper part of the housing before the suction port is formed, and an upper housing having an infrared light receiving section is provided on the upper part. The infrared light receiving portion is formed of an acrylic resin plate provided with a slit. The infrared rays incident through the slits are received by the detector (for example, refer to Patent Document 1).

In addition, there is an infrared detection device including: an infrared detection element; a light receiving window provided opposite the infrared detection element and constituted by an infrared transmitting material that transmits infrared energy; and a metal wall provided to support the light receiving window. Detect components by surrounding the infrared; metal wall temperature detector to measure the inner surface temperature of the metal wall; temperature signal pin for transmitting the temperature signal of the metal wall temperature detector to the outside; radiation signal pin for transmitting infrared The output signal of the detection element goes to the outside; and the cover of the detector prevents cold and warm wind from contacting the light receiving window, and is composed of an infrared transmitting material that transmits infrared rays (for example, refer to FIG. 1 of Patent Document 2).

[Advanced technical literature] [Patent Literature]

Patent Document 1: Japanese Patent Application Laid-Open No. 2-245212

Patent Document 2: Japanese Patent No. 3839922

However, in the configuration of Patent Document 1, it is possible for a finger or a foreign object to enter through a slit in the infrared light receiving section. In addition, the conductor may be inserted, and the inserted conductor may contact the charging portion. Conductors that come into contact with the charging section are energized.

In Patent Document 2, the conductor is not in direct contact with the charging portion (referred to herein as a metal wall) by the detector cover. However, the user can touch the cover of the detector. Therefore, after being touched, fingerprints, dirt, or sebum, etc. will adhere, and the detection accuracy may be deteriorated. In addition, the distance between the charging part of the detector cover is relatively short, and the detecting cover is used as the insulation protection of the charging part. Therefore, the detector cover must have a certain degree of strength. When the wall thickness of the material is increased to increase the intensity to the detector cover, the infrared transmittance decreases. In addition, when the distance between the cover of the detector and the charging part is relatively long, there is a concern that the device becomes large.

The present invention has been developed to solve the above problems. An air cleaner that does not contact the human detection device with a finger or a conductor, does not deteriorate the detection accuracy of the human detection device due to fingerprints or sebum contamination, etc. As the object of the present invention.

The air purifier of the present invention has: a main body casing; a fan for taking indoor air into the interior of the main body casing; an air cleaning filter for purifying air taken in by a fan; a human detection device for detecting the position of a person; And a control mechanism that controls a person's detection device; and operates in response to a detection result of the person's detection device. The human detection device has: an infrared detector; a holder for the detector to transmit infrared material Material forming; and a housing that houses an infrared detector and a detector holder. The housing is formed with an infrared intake opening that opens forward. The infrared access opening is an opening to the extent that a finger cannot reach the detector holder.

According to the present invention, it is possible to provide a human detection device that does not contact a finger or a conductor, and the detection accuracy of the human detection device is not deteriorated due to dirty fingerprints or sebum, and the human detection device is not large. Air purification machine.

M‧‧‧Air Purifier

10‧‧‧Body housing

11‧‧‧Front body case

11a‧‧‧ Upper divider

111a‧‧‧ opening

11b‧‧‧ Lower divider

111b‧‧‧ lower opening

11c‧‧‧detector opening

12‧‧‧ rear body housing

12a‧‧‧Up Rolling Shell

121a‧‧‧open from the top

122a‧‧‧Upper recess

12b‧‧‧ lower rolling shell

121b‧‧‧Open above

122b‧‧‧Down recess

12c‧‧‧Ministry of Space

12x‧‧‧ wall before and after separation

13‧‧‧fan protector

20‧‧‧fan unit

21‧‧‧Motor

21a‧‧‧rotation shaft

22‧‧‧Motor cover

23‧‧‧ Wing

30‧‧‧ substrate unit

31‧‧‧printed circuit board

32‧‧‧The first substrate housing

33‧‧‧ 2nd substrate housing

40‧‧‧automatic rotation unit

41‧‧‧ base

41a‧‧‧Recess of base

413a‧‧‧ Divider

414a‧‧‧Slit

415a‧‧‧ rack

41b‧‧‧center convex

41c‧‧‧Power cord

42‧‧‧ bottom body housing

42a‧‧‧bearing

421a‧‧‧Side opening

42b‧‧‧flange

42c‧‧‧wheel housing

42d‧‧‧Photo interrupter mounting recess

43‧‧‧automatic rotation axis

43a‧‧‧through hole

431a‧‧‧groove section

44‧‧‧Rotary drive unit

44a‧‧‧stepping motor

441a‧‧‧rotation shaft

44b‧‧‧ pinion

44c‧‧‧bearing retaining plate

44d‧‧‧Motor housing

45‧‧‧rotation position detection mechanism

46‧‧‧Sliding plate

46a‧‧‧ sliding plate opening

46b‧‧‧flange recess

47‧‧‧Sliding plate pusher

48‧‧‧ Wheels on base

49‧‧‧body wheel

50‧‧‧ Upper Unit

51‧‧‧frame

51a‧‧‧blowout

51b‧‧‧section

51c‧‧‧Front surface recess

52‧‧‧Louvres

53‧‧‧Louvre Drive Motor

54‧‧‧ Operation display

54a‧‧‧operation substrate

541a‧‧‧ recess

54b‧‧‧Under the operation frame

541b‧‧‧Opening of light path

542b‧‧‧ connecting rod

543b‧‧‧Concave part of operation frame

54c‧‧‧on the operation rack

541c‧‧‧piece

55‧‧‧person detection device

55a‧‧‧shell

551a‧‧‧shell frame

552a‧‧‧shell cover

553a‧‧‧bottom opening

554a‧‧‧Infrared access opening

555a‧‧‧shaft connection

556a‧‧‧rotation limit rib

55b‧‧‧Infrared Detector

551b‧‧‧Scout holder

552b‧‧‧ light receiving element

553b‧‧‧Receiving lens

554b‧‧‧metal wall

555b‧‧‧ substrate

55c‧‧‧sensor drive motor

551c‧‧‧rotation axis

60‧‧‧Air Purification Filter

61‧‧‧ pre-filter

62‧‧‧HEPA filter

63‧‧‧ Deodorizing filter

70‧‧‧ front cover

71‧‧‧ recess

72‧‧‧ Detector opening

80‧‧‧ side cover

81‧‧‧hand touch recess

82‧‧‧Side recess

82a‧‧‧Air inlet

83‧‧‧ snap claw

83a‧‧‧claw opening

84‧‧‧Threaded opening

90‧‧‧ rear cover

91‧‧‧ engagement receiving section

91a‧‧‧ slit opening

91b‧‧‧ convex

FIG. 1 is a perspective view of the air cleaner M. FIG.

Fig. 2 is an A-A sectional view of the air cleaner M in Fig. 1.

FIG. 3 is a first exploded perspective view of the air cleaner M. FIG.

Fig. 4 is a second exploded perspective view (a) of the air cleaner M and an enlarged view (b) of the engagement receiving portion.

FIG. 5 is a perspective view of the automatic rotation unit 40.

Fig. 6 is a top view (a) and a cross-sectional view (b) of the top view (a) of the automatic rotation unit 40.

FIG. 7 is an exploded perspective view of the automatic rotation unit 40.

FIG. 8 is an exploded perspective view of the upper unit 50.

FIG. 9 is an exploded perspective view of the human detection device 55. FIG.

Fig. 10 is a front view (a) and a sectional view (b) of the C-C in the front view (a) of the human detection device 55.

Fig. 11 is a sectional view taken along the line D-D in the front view (a) of Fig. 10;

FIG. 12 is an enlarged schematic view of part E in FIG. 11.

FIG. 13 is a schematic diagram showing the field of view of the infrared detector in the up-down direction.

FIG. 14 is an image diagram of the rotation driving angle of the human detection device.

FIG. 15 is a conceptual diagram of a position when the corresponding person detection device is rotated and driven.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same or corresponding parts are given the same reference numerals, and repeated descriptions are simplified or omitted as appropriate.

Embodiment 1

When referring to FIGS. 1 to 4, the air cleaner M of this embodiment includes: a main body casing 10; a fan unit 20; an automatic rotation unit 40 as a rotation mechanism for changing the direction of the main body casing 10; an upper part; Unit 50; air cleaning filter 60; front cover 70 covering the front surface; side cover 80 covering the left and right sides respectively; rear cover 90 covering the rear surface; and parts attached to the aforementioned parts.

The structure of the main body shell 10 is a front body shell 11 on the front side, and a rear body shell 12 on the rear side.

The front body case 11 has a shape viewed from the front, and has a long rectangular shape in the longitudinal direction. The front body case 11 is provided with an upper divider 11a and a lower divider 11b, which are wall surfaces that divide the interior into a front side and a rear side.

The upper divider 11 a divides the upper side of the front body case 11. A circular upper opening 111a is formed in the upper separator 11a. The lower divider 11 b divides the lower side of the front body case 11. A circular lower opening 111b is formed in the lower divider 11b. The upper opening 111a and the lower opening 111b are openings extending through the front-rear direction. The upper divider 11a is positioned further forward than the lower divider 11b.

In addition, at the front surface of the front body case 11, it becomes the following The detector opening 11c at the position out of the device 55 is an opening. This detector opening 11c is located on the upper side of the front surface of the front body casing 11 and is centered on the left and right widths.

Then, the rear body case 12 is formed in a shape viewed from the front, and has a long rectangular shape in the longitudinal direction. An upper rolling case 12a is formed on the upper side of the rear body case 12 and a lower rolling case 12b is formed on the lower side.

These rolling shells 12a and 12b are formed by partition walls standing forward from the front and rear wall surfaces 12x of the body casing 12 after partition. The rolling housings 12a and 12b face forward and are opened in a rolling shape. Upper rolling openings 121a, 121b are formed at the rolling housings 12a, 12b, respectively.

The upper rolling case 12a is positioned further forward than the lower rolling case 12b. The space adjacent to the upper opening 121a is communicated with the upper opening 121b through the space behind the upper rolling housing 12a.

Further, a space portion 12c is formed between the wall surfaces 12x on the front and rear sides of the separated main body case 12 and the upper rolling case 12a and the lower rolling case 12b.

Further, inside the upper rolling case 12a, a concave portion 122a is formed as a circular concave portion which opens forward. Similarly, a lower concave portion 122b is formed inside the lower rolling housing 12b as a circular concave portion that opens forward.

Here, the space portion 12c is located between the upper and lower rolling shells 12a, 12b, and the distance between the space portion 12c and the upper recessed portion 122a is equal to the distance between the space portion 12c and the lower recessed portion 122b, or there is not much difference. .

Next, the fan unit 20 includes a motor 21, a motor cover 22 covering the motor 21, and a wing body 23 fixed to a rotation shaft 21a of the motor 21. The fan unit 20 is driven by the motor 21 to rotate the wing body 23, takes in air from the direction of the rotation axis (front), and blows it out in the radial direction. This fan unit 20 is loose Centrifugal multi-wing fans such as heat fans.

Next, the substrate unit 30 includes a printed circuit board 31 (hereinafter referred to as a substrate 31) in which electronic components are assembled, a first substrate case 32, and a second substrate case 33. The first substrate case 32 contains the substrate 31 therein. The first substrate case 32 is made of resin. The second substrate case 33 houses the first substrate case 32 in a state where the substrate 31 is held inside. The second substrate case 33 is formed of a metal.

This substrate unit 30 constitutes a control mechanism that controls the operation of various electrical components such as a sensor or a motor constituting the air cleaner M based on inputs from an operation unit or various sensors.

The printed circuit board 31 constituting the substrate unit 30 may be a power supply substrate. A microcomputer serving as a control mechanism may be provided on the operation substrate 54a constituting the operation display section 54 described below.

Next, the automatic rotation unit 40 will be described with reference to FIGS. 5 to 7.

The automatic rotation unit 40 includes a base 41, a bottom body housing 42, an automatic rotation shaft 43, a rotation driving unit 44, a rotation position detection mechanism 45, a slide plate 46, a slide plate pusher 47, a base-side wheel 48, and a body.侧 轮 49。 The side wheel 49. The bottom body casing 42 is connected to the body casing 10 to become a bottom. The bottom body case 42 is rotatably supported on the automatic rotation shaft 43. The rotation driving unit 44 rotates the bottom body case 42 with respect to the base 41. The rotation position detection mechanism 45 detects the rotation position of the bottom body case 42.

The base 41 is a portion that supports the bottom of the entire air cleaner M as a whole. The shape of the base 41 is rectangular. The base 41 is formed with a base recessed portion 41 a as a recessed portion having a circular opening. The center of the base recess 41a is formed as The central convex portion 41b of the protruding portion opened at the central portion. An automatic rotation shaft 43 is provided in the central convex portion 41b.

A through hole 43a is formed in the center of the automatic rotation shaft 43 so as to penetrate vertically. In a state where the automatic rotation shaft 43 is mounted on the center convex portion 41b, the center convex portion 41b is located inside the through hole 43a. A through-hole 43 a opened in the center of the automatic rotation shaft 43 is fitted into this central convex portion 41 b, whereby the automatic rotation shaft 43 is mounted on the base 41. The through hole 43a is in communication with the central convex portion 41b.

A power cord 41c for receiving power from the outside is passed through the central convex portion 41b. The opening of the central convex portion 41b is an opening for introducing the power cord 41c into the main body case. The power line 41c is connected to the printed circuit board 31.

In this way, the power cord 41c is led into the main body case 10 through the central convex portion 41b. Thereby, even if the main body case 10 is rotated by the automatic rotation unit 40, the power cord 41c is not affected by this rotation.

A divider 413a is provided in the base recess 41a so as to protrude from the bottom surface. The divider 413a has a circular arc shape in which the center of the base recessed portion 41a is drawn at the origin. The separator 413a is formed with three slits 414a at equal intervals. The center of the base recessed portion 41 a becomes the center of rotation of the bottom body case 42.

Further, a rack 415a is formed on the opening edge of the base recessed portion 41a on the opposite side of the separator 413a from the side of the automatic rotation shaft 43 to expand into a fan shape along the opening edge. A plurality of base-side wheels 48 are provided on the opening edge of the base recessed portion 41a. The pedestal-side wheel 48 is provided so as to rotate in a wiring direction in which the center of the pedestal recessed portion 41 a is drawn at the origin.

Next, the bottom body housing 42 is tied at the center and is formed as a bearing 42a opening. The outer shape of the bottom body case 42 is a shape of a lid that can be inserted into the inside of the base recess 41a. A flange 42b is formed on the bottom body casing 42 and extends outward from the upper end. The bottom body case 42 is provided with a rotation position detection mechanism 45, a rotation drive unit 44, a slide plate 46, and a body-side wheel 49.

The rotation position detection mechanism 45 uses three photo interrupters. The photointerrupter has a light emitting portion and a light receiving portion facing each other. The photointerrupter is a detector that can detect the light from the light-emitting part by the light-receiving part. The control mechanism determines the rotation position based on the combination of the signals when the three photo interrupters detect light.

The three photo interrupters constituting the rotational position detection mechanism 45 are provided with photo interrupter mounting recesses 42d so as to extend from the center of rotation of the bottom body housing 42 to the position where the light emitting portion and the light receiving portion face each other. The distances are equal. The photo-interrupter mounting recess 42 d is formed in the bottom body case 42. The photo-interrupter mounting recess 42d is a recess that opens downward. In addition, the rotation center of the bottom body case 42 is a passing position of the rotation axis of the bottom body case 42 in the case of this embodiment. The rotation center of the bottom body case 42 is also the opening center of the bearing 42a.

In addition, the distance from the center of rotation of the bottom body housing 42 to the gap between the light-emitting portion and the light-receiving portion of the photointerrupter is separated from the center of the automatic rotation shaft 43 provided on the base 41 to the distance. The distances up to the device 413a are equal. The interval between the centers of the adjacent photointerrupters is equal to the interval between adjacent slits formed in the partition 413a.

The gap between the light-emitting portion and the light-receiving portion of the photointerrupter is configured to open downward.

Next, the rotary drive unit 44 has a step that becomes a driving source. The motor 44a, the pinion gear 44b, the bearing holding plate 44c, and the motor case 44d. The pinion 44b is mounted on a rotation shaft 441a of the stepping motor 44a. The bearing holding plate 44c receives a rotation shaft 441a of the stepping motor 44a. The motor case 44d covers and holds the stepping motor 44a from the lower side.

The rotation drive unit 44 configured as described above is screwed from the lower side of the bottom body case 42 through the screw holes formed in the motor case 44d and the bearing holding plate 44c with the rotation shaft 441a facing downward. In this way, the rotation drive unit 44 is mounted so that the pinion 44 b is located below the bottom body case 42.

Next, the slide plate 46 is formed into a circular plate body and is formed into a ring shape of the slide plate opening 46a. On the upper surface of the sliding plate 46, a flange recess 46b into which the flange 42b is inserted is formed.

The sliding plate 46 formed in this manner is fixed to the bottom body casing 42 by screws or the like while the sliding plate opening 46a leads into the bottom body casing 42 while the flange recessed portion 46b is inserted into the flange 42b.

Next, the main body side wheel 49 is a part of the main body side wheel 49, and is rotatably mounted in the wheel housing 42c in a state where the main body side wheel 49 protrudes downward from the bottom main body case 42. The wheel housing 42c is a recessed portion formed on the lower surface of the bottom body case 42 and opened downward.

A plurality of body-side wheels 49 are attached to the bottom body case 42. Each body-side wheel 49 is arranged so that the center of rotation from the bottom body case 42 (the opening center of the bearing 42a) is the same distance.

Each part of the automatic rotation unit 40 described above is assembled as follows.

The bottom body housing 42 provided with the above-mentioned parts is mounted so that the bearing 42a is rotatably supported by an automatic rotation shaft 43 mounted on the base 41, thereby being mounted on the base 41.

At this time, the pinion 44b of the rotation driving unit 44 provided on the bottom body case 42 is in a state of being engaged with the rack 415a provided on the base 41. The divider 413a is located on the gap between the light-emitting portion and the light-receiving portion facing each other in the rotation position detection mechanism 45.

Further, the stopper 42e is mounted so that the bearing 42a does not disengage from the automatic rotation shaft 43. This stopper 42e is formed from the side opening 421a of the bearing 42a, and is engaged with the groove portion 431a formed on the side surface of the automatic rotation shaft 43, thereby preventing the bottom body casing 42 from detaching upward.

In addition, the slide plate depressor 47 that presses the peripheral edge of the slide plate 46 from above is attached to the base 41, thereby suppressing the shake when the bottom body case 42 side is rotated.

As such, in a state where the bottom body case 42 is mounted on the base 41, the body-side wheel 49 is in contact with the base 41 to support the bottom body case 42. The base-side wheel 48 is in contact with the slide plate 46 to support the bottom body case 42.

These wheels roll relative to the base 41 when the bottom body case 42 rotates, thereby reducing the resistance between the two members. Thereby, the bottom body case 42 side is smoothly rotated.

The distance from the center of rotation of the bottom body housing 42 (the center of the opening of the bearing 42a) to the gap between the light-emitting portion and the light-receiving portion of the photointerrupter is automatically rotated from the base 41. The distance from the center of the shaft 43 to the divider 413a is equal. Therefore, in a state where the separator 413a is located between the light emitting section and the light receiving section, the bottom body case 42 is rotatable.

Therefore, in a state where the base 41 is placed on the ground, the stepping motor 44a is operated, whereby the pinion gear 44b engaged with the rack 415a is rotated, and the bottom body housing 42 side is rotated relative to the base 41.

In this way, when the bottom body casing 42 is rotated to change the direction, the light interrupter serving as the rotation position detection mechanism 45 is connected to the bottom body in a state where the light emitting portion and the light receiving portion are sandwiched by the separator 413a. The housing 42 rotates together.

The positions of the rotation position detection mechanism 45 and the separator 413a are changed by rotation. By the rotation position, the slit 414a is located between the light emitting section and the light receiving section, and the light receiving section detects the light from the light emitting section.

The control mechanism determines the rotation position (direction) of the bottom body casing 42 (body casing 10) based on the combination of the states of the photointerrupters detected by the light receiving unit.

Next, the upper unit 50 will be described with reference to FIGS. 1 to 2 and 8.

The upper unit 50 includes a frame body 51, a louver 52, a louver drive motor 53, an operation display unit 54, and a human detection device 55. The frame body 51 serves as a skeleton of the upper unit 50. The louvers 52 change the direction of the clean wind being blown. The louver drive motor 53 changes the direction of the louver 52. The operation display section 54 inputs various setting conditions of the air cleaner M, and displays the state of the air cleaner M. The person detection device 55 is provided with a detector for detecting the presence of a person.

The frame body 51 has a rectangular shape as seen from above. On the rear side of the frame body 51, a blow-out port 51a is formed as a clean air having a rectangular opening facing upward. The frame body 51 is located on a side further than the blowout port 51a, and is lower than the peripheral portion 51b of the blowout port 51a. A front surface recessed portion 51 c is formed on the front surface of the frame body 51 so as to be recessed rearward. The front surface recessed portion 51c is provided with a person detection device 55 described below.

Next, the louver 52 changes the direction of the cleaned air blown out from the blowing outlet 51a. The two louvers 52 are arranged side by side so that they pass over the left and right of the blowout port 51a. The louver 52 is pivotally supported on the inner wall of the blow-out port 51a so as to rotate freely.

A louver drive motor 53 for driving the louver 52 to change its direction is provided on the side of the frame body 51 and near the louver 52.

Next, the operation display portion 54 is composed of an operation substrate 54a, a lower operation frame 54b, an upper operation frame 54c, and a sheet body 541c. Electronic components such as switches 541s and LEDs as light emitting sections 541h are incorporated in the operation substrate 54a. The lower operation frame 54b is provided with an optical path opening 541b or a link 542b. The light path opening 541b guides light from the LED. The link 542b pushes down the switch 541s on the operation substrate 54a. The upper operation frame 54c is provided with a display opening 542c through which light from an LED passes, and a push button 543c. The function or description of the LED lamp is printed on the sheet body 541c. The sheet body 541c is formed with a push button opening 541d which is in an up-down position with the push button 543c.

The operation substrate 54a is provided on the segment portion 51b. A lower operation frame 54b is provided on the operation substrate 54a. An upper operation frame 54c is provided on the lower operation frame 54b. A sheet body 541c is provided on the upper surface of the upper operation frame 54c.

In this way, in a state where each part is provided, the key opening 541d is formed on the sheet body 541c so as to press the key opening 541d, and the position of the key opening 541c is up and down. The depression button 543c and the link 542b provided on the lower operation frame 54b are in a vertical positional relationship. The link 542b and the switch 541s are in a vertical positional relationship.

The function or description of the LED lamp is printed on the display opening. 542c becomes a positional relationship between up and down. The display opening 542c is in a positional relationship with the optical path opening 541b. The LED as the light emitting portion 541h is located inside the optical path opening 541b.

With this configuration, the depression button 543c is depressed, whereby the link 542b provided on the lower operation frame 54b is depressed. The link 542b is pressed down, and the switch 541s assembled on the operation substrate 54a is pressed down.

The functions and descriptions of the LEDs assembled on the operation substrate 54a, the light path of the lower operation frame 54b, and the lamp body of the sheet body 541c are the same. The LED corresponding to the function ‧ description display printed on the sheet body 541c is turned on and off, whereby the state of the air cleaner M is displayed.

Here, the operation substrate 54a is a part of a predetermined area from the front side of the center portion of the left and right widths, and is formed in a shape of a semicircular notch. In other words, on the operation substrate 54a, the shape of the operation substrate 54a is formed into a recessed shape, whereby the substrate recessed portion 541a is formed. This substrate recessed portion 541a is a position overlapping the front surface recessed portion 51c in a state where the operation substrate 54a is provided on the segment portion 51b.

Here, the notch forming the substrate recess 541a is configured so as not to overlap with a switch or LED provided on the operation substrate 54a.

Next, the lower operation frame 54b is from the front side of the center portion of the left and right widths, and the predetermined area is formed in a shape of a notch in a semicircular shape. In other words, on the lower operation frame 54b, the outer shape of the lower operation frame 54b is formed into a recessed shape, whereby the operation frame recessed portion 543b is formed. This operation frame recessed portion 543b is a position overlapping the front surface recessed portion 51c in a state where the lower operation frame 54b is provided on the step portion 51b.

Here, the notch forming the operation frame recessed portion 543b is configured so as not to overlap with the opening where the opening of the light path of the LED provided on the lower operation frame 54b or the link of the switch is located.

Next, the human detection device 55 will be described with reference to FIGS. 8 to 13.

The human detection device 55 includes a housing 55a, an infrared detector 55b housed inside the housing 55a, and a detector drive motor 55c connected to the housing 55a.

The case 55a is composed of a case frame 551a and a case cover 552a. The housing frame 551a is cylindrical. The housing frame 551a is formed with a lower opening 553a opening downward, an infrared receiving opening 554a opening forward, a shaft connecting portion 555a connected to a rotation shaft of a detector drive motor 55c, and a rotation restricting rib 556a To limit the rotation angle of the housing 55a.

The rotation restricting ribs 556a are formed by protruding from the shaft connecting portions 555a in the left-right direction, respectively. The rotation restricting rib 556a is the one that restricts the rotation angle of the casing 55a when the casing 55a is rotated by the detector driving motor 55c and collides with the frame 51 as a part where the human detection device 55 is installed.

The position where the left rotation restricting rib 556a collides with the frame body 51 corresponds to the left collision position 0 described below. The position where the right rotation restricting rib 556a hits the frame 51 corresponds to the right collision position 4 described below.

The infrared detector 55b is inserted in the inside of the housing 55a thus constituted while being held by the detector holder 551b. The lower opening 553a is closed by the case cover 552a.

The detector holder 551b is made of a member that transmits infrared rays, such as polyethylene resin. In this state, the infrared detector 55b is configured to detect The infrared rays incident on the housing 55a are taken into the infrared rays of the opening 554a.

The detector driving motor 55c drives the housing 55a to change the direction of the infrared detector 55b. A stepper motor is used as the sensor drive motor 55c. The sensor driving motor 55c is connected to a shaft connection portion 555a formed on the upper portion of the housing 55a so that the rotation shaft 551c is vertically downward.

In this way, the fixed person detection device 55 is formed by a sensor driving motor 55c and a housing 55a that holds the infrared sensor 55b inside, and has a vertically long shape connected vertically.

The person detection device 55 thus constructed is driven by the detector driving motor 55c, and the direction of the housing 55a is changed, and the direction of the infrared detector 55b is changed. The infrared detector 55b is configured so that it can be driven in a horizontal direction at a rotation angle of about 150 degrees.

When referring to FIG. 14, the angle from the left stop position 1 to the right stop position 3 of the infrared detector 55b is set to about 150 degrees. The angle from the left collision position 0 to the left stop position 1 of the infrared detector 55b and the angle from the right collision position 4 to the right stop position 3 are set to about 3 degrees. The infrared detector 55b is configured so that the angle from the left collision position 0 to the right collision position 4 cannot be rotated more than about 156 degrees.

As shown in FIGS. 10 to 12, the infrared detector 55 b is composed of a light receiving element 552 b, a light receiving lens 553 b, a metal wall 554 b, and a substrate 555 b. The light receiving element 552b outputs a signal according to the amount of incident infrared rays. The light receiving lens 553b is provided so as to face the light receiving element 552b. The metal wall 554b supports the light receiving lens 553b and surrounds the light receiving element 552b. The substrate 555b is a component that continuously holds the light receiving element 552b or the metal wall 554b, and constitutes a circuit so that Amplify the signal and output the signal to the outside. The light receiving lens 553b is made of an infrared transmitting material (for example, silicone).

In this embodiment, eight light-receiving elements 552b are provided. The light receiving elements 552b are arranged side by side in the vertical direction. In this way, by arranging the light receiving element 552b, as shown in FIG. 13, the detected object (target area) can be divided into eight areas of A1 to A8 with different heights for detection. That is, the infrared detector 55b is an area in which the detected object (target area) is expanded in the vertical direction in the stopped state.

The infrared rays incident on the human detection device 55 are taken in through the infrared access opening 554a of the housing 55a, because they are attenuated by the detector holder 551b and the light receiving lens 553b formed by the infrared transmitting material, and are attenuated by the light receiving element 552b. By light. The light receiving element 552b converts the amount of infrared light received into a signal. The converted signal is amplified to be output. Therefore, the higher the infrared transmittance of the detector holder 551b and the light-receiving lens 553b is, the less the attenuation of infrared rays is. Therefore, the detection accuracy of the human detection device 55 is improved as a result. The detection accuracy here means that people far away can be detected.

The thickness of the resin of the detector holder 551b is about 1 to 2 mm, and the thickness Xt of the portion facing the infrared intake opening 554a is about 0.3 to 0.5 mm in order to improve the infrared transmission efficiency.

The infrared receiving opening 554a of the casing 55a is formed in such a size that a finger cannot reach the detector holder 551b from the opening. For example, the infrared receiving opening 554a is a rectangle having a shorter dimension X of less than 3.6 mm. Here, the shape and size of the opening may be a circle with a diameter of 3.6 mm or less, or an oval with a short diameter of less than 3.6 mm. In this way, it can be made by fingers The reason why the infrared receiving opening 554a is in contact with the detector holder 551b is because a plurality of light receiving elements 552b are arranged in parallel in the longitudinal direction.

That is, the light-receiving element 552b is arranged side by side in the longitudinal direction. Therefore, the width of the infrared receiving opening 554a in the left-right direction is only required for a space (field of view) through which the incident infrared rays can pass as compared with one light-receiving element 552b. Degree.

Therefore, the width of the left and right infrared receiving openings 554a is relatively small, and the field of view of the light receiving element 552b is continuously ensured, so that it is difficult for a finger to enter the infrared receiving openings 554a.

The human detection device 55 configured as above is repeatedly driven in a range of about 150 degrees in the horizontal direction, changes the direction of the light receiving element 552b in the left and right directions, and scans the temperature in the room. Based on the temperature detection result, the control mechanism determines the existence of a person and the direction of existence of the person as viewed from the air cleaner.

In this way, the human detection device 55 is moved in the horizontal direction, so that even if the infrared detector 55b whose detection area is expanded in the vertical direction, it can detect infrared rays in a wide range in the left and right directions. .

The sensor driving motor 55c is a stepping motor that can adjust the driving angle correctly. Therefore, the direction of human existence is correctly judged. The stepping motor rotates the angle corresponding to the input pulse wave number.

This detector drive motor 55c is set to drive an angle corresponding to the pulse wave number of the input. The detector driving motor 55c is, for example, driven by α degrees per pulse wave. That is, the sensor drive motor 55c rotates by (100 × α) degrees when 100 pulses are input per second.

With this configuration, the finger cannot reach the detector holder 551b, Therefore, no fingerprints or sebum stains occur, and the detection accuracy does not deteriorate.

In addition, the housing 55a and the detector holder 551b are configured to be incapable of directly contacting the charging portion (here, the metal wall 554b). Therefore, there is no possibility that a finger may enter through the slit, a foreign substance may enter, and a conductor may be inserted to contact the charging portion.

In this way, the detector holder 551b protects the insulation of the charging part. In addition, since the distance between the detector holder 551b and the charging portion (here, the metal wall 554b) is relatively short, the human detection device 55 does not become large.

The upper unit 50 having the above units is assembled as follows.

When referring to FIG. 8, an operation substrate 54 a is provided on the upper surface of the segment portion 51 b on the front side of the frame body 51. Next, a lower operation frame 54b is provided so as to cover the operation substrate 54a. An upper operation frame 54c is provided on the upper surface of the lower operation frame 54b.

In this way, the upper surface of the operation display portion 54 provided on the frame body 51 is approximately the same height as the air outlet 51a. The upper surface of the operation display portion 54 is in a state in which the louver 52 is closed to cover the blow-out opening 51a, and has a height corresponding to the upper surface of the louver 52.

In this way, the front surface recessed portion 51c, the substrate recessed portion 541a, and the operation frame recessed portion 543b of the frame body 51 are perpendicular to the frame body 51 when the operation substrate 54a and the lower operation frame 54b are provided. Connected location relationship. Inside these recesses, a human detection device 55 is provided.

In the case of this embodiment, the housing 55a is located inside the recessed portion of the front surface recessed portion 51c. The detector driving motor 55c is located inside the recessed portion of the substrate recessed portion 541a and the operation frame recessed portion 543b. Furthermore, the human detection device 55 is fixed to the frame body 51 by screws, and is electrically connected to the control mechanism.

In addition, the infrared detector 55b of the human detection device 55 is lying at a predetermined angle with respect to the vertical direction so as to be mounted inside the casing 55a and slanted upward from the front.

The installation angle of the infrared detector 55b is, for example, in the air cleaner M, when the infrared detector 55b is installed at a position about 80 centimeters above the ground, it is set so that θ = 14 degrees from the horizontal upward.

With this configuration, the infrared detector 55b can detect from the head of a child (65 cm high) sitting at a place about 1.0 meters away from the air cleaner M to a place about 1.0 meters away from the air cleaner M Up to the head of an adult (170 cm high).

In this way, the upper unit 50 is arranged so that the recesses (51c, 541a, and 541b) are connected in the vertical direction, and a person detection device 55 is provided in a space formed by the recesses. Thereby, the amount by which the human detection device 55 protrudes below the upper unit 50 becomes smaller.

That is, the air cleaning filter 60 and the human detection device 55 described below are not overlapped up and down, or the amount of overlap is reduced. The area in which the air cleaning filter 60 is installed below the human detection device 55 is larger.

In addition, the amount by which the human detection device 55 protrudes forward of the upper unit 50 is reduced.

Next, the air cleaning filter 60 will be described with reference to FIGS. 2 to 4.

The air cleaning filter 60 is composed of a pre-filter 61, a HEPA filter 62, and a deodorizing filter 63.

The pre-filter 61 is used to remove large dust and the like from the air. HEPA The filter 62 removes dust (particles), bacteria, and viruses that cannot be removed by the pre-filter 61 from the air. The deodorizing filter 63 is one which is desorbed and decomposed by the airflow passing through the pre-filter 61 and the HEPA filter 62 to remove malodorous components or volatile organic compounds (VOC).

Next, the lids constituting the outer contour of the air cleaner M will be described with reference to FIG. 4.

The outer contour of the air cleaner M is comprised of the front cover body 70, the left side cover body 80, and the rear cover body 90, respectively.

The front cover 70 is formed in a rectangular shape with a long longitudinal direction. On the front surface of the front cover 70, left and right long concave portions 71 are formed. Further, at the left and right centers of the recessed portion 71, a detector opening 72 facing the human detection device 55 is an opening.

The recess 71 is provided to ensure that the infrared detection device 55b is driven by the detection device driving motor 55c while the direction of the infrared detection device 55 is changed when the human detection device 55 is located in the detection opening 72. Detect a recess in the field of view. In a state where the human detection device 55 is located in the detector opening 72, the front surface of the human detection device 55 is approximately the same surface as the front surface of the front cover 70.

In addition, the recess 71 is formed in a fan shape with the detector opening 72 as the center, which is larger than about 150 degrees, in accordance with the rotation angle of the infrared detector 55b. Thereby, when the human detection device 55 operates and the housing 55a rotates, the front cover 70 does not hinder the detection field of view of the infrared detector 55b.

Further, the detector opening 72 is provided at a position about 80 [cm] from the ground in a state where the front cover 70 is mounted on the body case 10.

Next, the left and right side cover bodies 80 are formed into a vertically long rectangle. A hand contact recess 81 is formed on the side surface of the side cover 80. In front of the side cover 80, A side recessed portion 82 having a width in the vertical direction is formed. An engaging claw 83 is formed on the rear side of the side cover 80 to stand inward. The engaging claw 83 is formed in a plate shape. The engagement claw opening 83 a is an opening in the engagement claw 83. Further, at the front side, the threaded opening 84 penetrating in the front-rear direction is an opening.

Next, the rear cover 90 is formed in a rectangular shape that is vertically long. A plurality of engagement receiving portions 91 are formed on the left and right sides of the rear cover 90 to which the engagement claws 83 are engaged. The engagement receiving portion 91 is formed by a slit-shaped opening (slit opening 91a) facing the side, and a convex portion 91b formed as a surface facing the front of the rear cover 90 and formed near the slit opening 91a. Make up.

Above, the front cover 70, the side cover 80, and the rear cover 90 are all the same height.

The above units and components are assembled as follows to form the air cleaner M.

When referring to FIGS. 2 to 4, the motor 21 is mounted on the upper recessed portion 122 a and the lower recessed portion 122 b of the rear body case 12, respectively, whereby a fan unit 20 is provided.

The motor 21 has the axial direction of the rotation shaft facing forward, and is mounted on the upper recessed portion 122a and the lower recessed portion 122b, respectively.

That is, the fan unit 20 is provided so that the suction opening of the wing body 23 faces forward, draws air from the front, and blows out the airflow toward the rolling shells 12a, 12b located in the radial direction of the wing body 23 and surrounding.

Then, the main body case 12 is connected to the front main body case 11 so as to cover the front surface. That is, the front body case 11 and the rear body case 12 are mated back and forth, and are fixed with screws or the like to constitute the body case 10.

Here, when the front main body case 11 and the rear main body case 12 are fixed in front and back, the bottom main body case is in the lower end of the front main body case 11 and the rear main body case 12 The body 42 is clamped, whereby the automatic rotation unit 40 is mounted with respect to the body case 10.

That is, a bottom body case 42 is provided in the lower space of the body case 10 formed by the front body case 11 and the rear body case 12 facing forward and backward, so as to be the bottom of the body case 10.

The bottom body case 42 is fixed relative to the front body case 11 and the rear body case 12 while being sandwiched between the front body case 11 and the rear body case 12. The structure of the bottom body case 42 is free to rotate relative to the base 41. Therefore, the body case 10 integrated with the bottom body case 42 is rotatable relative to the base 41.

In this way, when the front main body case 11 and the rear main body case 12 are fixed in front and back, the bottom main body case 42 is clamped by the lower ends of the front main body case 11 and the rear main body case 12, thereby, The automatic rotation unit 40 is attached to the body case 10. Thereby, the body case 10 and the automatic rotation unit 40 are firmly coupled.

A bottom body case 42 is embedded in a space formed by the front body case 11 and the rear body case 12 facing forward and backward.

That is, in the shape of the space, the movement of the body case 42 with respect to the bottom of the body case 10 is suppressed (the rotation is prevented). Therefore, even if the body casing 10 which is increased in weight by each part is rotated, the combination of the body casing 10 and the automatic rotation unit 40 remains strong.

In this way, in a state where the front body case 11 and the rear body case 12 are connected, the fan unit 20 is installed so that the shaft of the fan motor faces forward, so the suction opening of the wing body 23 faces forward. . Upper wind The suction opening of the fan unit 20 faces the upper opening 111a, and the lower fan unit 20 faces the lower opening 111b.

In this way, the fan body 13 and the air cleaning filter 60 are provided inside the body case 11 before being combined with the rear body case 12 as described below.

The fan protector 13 prevents a foreign object from entering the grid-like frame inside the fan unit 20. The fan protectors 13 are respectively provided so as to cover the upper opening 111a and the lower opening 111b.

The air cleaning filter 60 is provided inside the front body case 11. The air cleaning filter 60 is provided with a pre-filter 61 on the front surface side, a HEPA filter 62 behind the pre-filter 61 and a deodorizing filter 63 behind the HEPA filter 62.

Next, an upper unit 50 is provided on the upper portion of the main body casing 10 formed by the front main body cover 11 and the rear main body cover 12 abutting back and forth. This upper unit 50 is arranged across the front body cover 11 and the rear body cover 12. Further, the frame body 51 of the upper unit 50 is fixed to the front body cover 11 and the rear body cover 12 with screws or the like.

In this way, the upper unit 50 is disposed across the front body cover 11 and the rear body cover 12, and the frame 51 as the skeleton of the upper unit 50 is fixed to the front body cover 11 and the rear body cover. Body 12. Therefore, the combination of the front body cover 11 and the rear body cover 12 is stronger.

Next, as described above, the air outlet 51a of the upper unit 50 mounted on the main body casing 10 is located above the openings 121a and 121b of the rolling housing. In addition, the detector opening 11c of the front body case 11 has an opening for introducing infrared rays to the inside to face forward, so that the human detection device 55 faces.

Here, the human detection device 55 is provided inside a recessed portion formed by a front surface recessed portion 51c of the frame body 51, a substrate recessed portion 541a, and an operation frame recessed portion 543b connected vertically in the vertical direction. Thereby, the protrusion amount of the frame body 51 of the person detection device 55 to the front and the bottom in the state where the person detection device 55 is set on the frame body 51 is reduced.

As a result, the amount of protrusion of the human detection device 55 forward is reduced, so the size of the air cleaner system in the front-back direction becomes smaller.

In addition, since the amount of protrusion of the human detection device 55 downward is reduced, the amount by which the human detection device 55 shields the air purification filter 60 located below becomes smaller. Therefore, the indoor air efficiency flows to the air cleaning filter 60 more efficiently.

Next, a position where the substrate unit 30 is provided will be described.

Between the upper rolling case 12a and the lower rolling case 12b in the up-down direction, and the opening direction is a space portion 12c which is a side of the space from the lower rolling case 12b to the inside of the upper rolling case 12a, and a base unit 30 is provided .

The space portion 12c is a space formed by the shapes of the rolling shells 12a and 12b formed by curved surfaces and the shape of the main body shell 12 after being rectangular. In this way, the substrate unit 30 is provided in the space portion 12c. By efficiently disposing the substrate unit 30, the air cleaner can be made more compact.

The space portion 12c is located between the upper rolling case 12a and the lower rolling case 12b. Therefore, the distance from the base unit 30 can be made equal to the fan unit 20 provided on each rolling housing.

Thereby, the length of the wiring connecting the substrate unit 30 and each fan unit 20 is made the same. Therefore, there is no need to prepare a motor for changing the wiring length. In addition, when assembling, the upper and lower motors can be installed without distinction.

Next, the mounting of the front cover 70, the side cover 80, and the rear cover 90 constituting the outer contour will be described with reference to Figs. 3 and 4.

First, a rear cover 90 is provided on the back surface of the rear body case 12 to be screwed. Thereby, a space K surrounded by the rear body case 12 and the rear cover 90 is formed above the upper opening 121b.

This space K communicates with the upper opening 121b of the lower rolling housing 12b and the air outlet 51a. This space K is a flow path of the air flow blown from the fan unit 20 provided on the lower rolling housing 12b.

Next, attachment of the side cover 80 will be described.

The engaging claws 83 of the side cover 80 are inserted into the slit openings 91 a of the rear cover 90 from the side, in a state where they are mounted on the rear body case 12. The convex portion 91b is fitted into the engaging claw opening 83a. In this state, the side cover 80 is at a right angle to the rear cover 90 and covers the side of the main body casing 10. Further, the side cover 80 is screwed from the front through the threaded opening 84 to be screwed to the front body case 11.

In this way, the rear side of the side cover 80, the engaging claw 80 is inserted into the slit opening 91a of the back cover 90 to enter the inside of the back cover 90. On the rear side of the side cover 80, the fastening convex portion 91b is fitted into the engaging claw opening 83a, thereby being engaged without using screws or the like. The front side of the side cover 80 is fixed with screws.

As a result, the amount of screws used when attaching the side cover 80 to the back cover 90 is reduced.

Next, attachment of the front cover 70 will be described.

The front cover 70 is in a state where the air cleaning filter 60 is mounted on the front body case 11 and is detachably mounted on the front body case 11 so that the cover Cover air cleaning filter 60.

In a state where the front cover 70 is mounted on the front body case 11, the infrared detector 55 b is located at the detector opening 72. In a state where the front cover 70 is mounted on the front body case 11, the screws mounted on the threaded openings 84 of the side cover 80 cannot be seen from the outside because of the front cover 70.

In addition, the front cover 70 is freely attachable to and detachable from the front body case 11. By removing the front cover 70, the air cleaning filter 60 can be removed for maintenance such as cleaning.

A side recess 82 is formed in the side cover 80. Therefore, a gap R is formed at a position where the front cover 70 and the side cover 80 are mated. This gap R is an air inlet 82a for taking indoor air into the air cleaner.

In this way, the air inlet 82a faces the left-right direction of the air cleaner. Therefore, air is also taken in from the side of the air cleaner. That is, the rotation angle of the air cleaner is the direction in which the air intake port 82a can take indoor air from a wider range.

In addition, the air cleaner configured as described above is provided with a dust detector (not shown) that detects the amount of dust contained in the indoor air, and an odor detector (not shown) that detects the odor of the indoor air. Icon).

Moreover, these detectors are electrically connected to the control mechanism. The signal sent by the detector is input to the control mechanism. According to the signal input to the control mechanism, the air cleaning operation can be performed.

The air cleaners in which the units are assembled as described above operate the units as follows to take in indoor air and clean the air.

First, when the power cord 41c is connected to a power source, the rotational position detection mechanism 45 detects a positional relationship between the main body case 10 (hereinafter, simply referred to as the main body case 10) and the automatic rotation unit 40 in a state where each part is assembled.

When the body case 10 is not facing the same direction as the automatic rotation unit 40, that is, when the body case 10 is not facing the front, until the rotation position detecting mechanism 45 detects that the body case 10 is facing the front, the rotation driving unit 44 The body case 10 is driven to rotate.

Moreover, in the case of this embodiment, the state in which the main body casing 10 faces the front is three photo interrupters serving as the rotation position detection mechanism 45, and are respectively located on three slits formed in the partition 413a. , All the photo interrupters are in a state where the light receiving section detects the light from the light emitting section.

In this way, after the frontal movement of the main body housing 10 in the direction as the initial state is completed, the detector driving motor 55c of the human detection device 55 performs the following alignment operation, and the infrared detector 55b is Stop with the front facing.

Next, the operation start switch provided in the operation display unit 54 is operated, whereby the control mechanism starts the air cleaning operation.

First, by the drive of the louver drive motor 53, the louver 52 moves to the upper direction, and the air outlet 51a is released. At this time, the louvers 52 stop at an angle of about 45 degrees from the horizontal direction, and the angle at which the clean air is blown out. This blowing angle is the best angle for cleaning indoor air.

Then, the fan unit 20 is driven. Thereby, the indoor air is sucked into the air cleaner by the air inlet 82a formed between the front cover 70 and the side cover 80.

Moreover, the indoor air taken into the interior of the air cleaner is passed through the front The filter 61, the HEPA filter 62, and the deodorizing filter 63 are sucked into the wing body 23 of the fan unit 20 from the front, and are discharged into the rotation direction of the wing body 23, and the self-blowing outlet 51a is blown out of the air cleaner.

Here, a mode switching switch provided on the operation display section 54 is operated, and thereby an operation mode set in advance is selected.

For example, when the standard automatic operation mode is selected, the control mechanism operates the fan unit 20 and the automatic detection unit 55 based on the detection results of the human detection device 55, the dust detector (not shown), and the odor detector (not shown). Rotating unit 40 and louver 52.

Next, a person detection operation of the person detection device 55 will be described with reference to FIGS. 14 and 15.

When the standard operation is started, the human detection device 55 starts a human detection operation. By the drive of the detector driving motor 55c, the casing 55a provided with the infrared detector 55b inside rotates, and the direction of the infrared detector 55b is changed.

The sensor driving motor 55c is set to drive an angle corresponding to the number of input pulses. In response to this, the amount of rotation angle of the casing 55a is determined.

Moreover, in the case of this embodiment, the rotation angle of the detector driving motor 55c, that is, the rotation angle of the housing 55a, is from the state where the rotation restricting rib 556a on one side hits the frame 51 to the other The rotation restricting rib 556a is set to approximately 156 degrees until it hits the frame 51.

When referring to FIG. 15, in step 1, the control mechanism inputs the left collision pulse wave P1 to the detector driving motor 55 c, so that the rotation restriction rib 556 a on the left side of the housing 55 a is collided with the frame 51. The left collision position is 0, and the sensor driving motor 55c rotates to the left.

The input pulse wave number of this left collision pulse wave P1 is the sensor drive motor 55c Rotating to the left, the human detection position 55 serves as the right rotation restricting rib 556a, hits the right collision position 4 of the position of the frame 51, and reaches the left collision position 0. The rotatable rotation angle is about 156 degrees The number of pulse waves. In the phase after the end of this step 1, it is toward the leftmost direction.

This step 1 is the initial process of the control mechanism resetting the rotation position of the detector driving motor 55c, which is used for the correct alignment of the orientation of the infrared detector 55b. Thereby, before step 1 is started, even if the user touches the human detection device 55 or when any object comes in contact with and rotates, the alignment operation can be performed correctly.

Next, in step 2, the control mechanism inputs the first correction pulse wave P2 so that the sensor drive motor 55c is reversed relative to the rotation in step 1.

The input pulse wave number of the first correction pulse wave P2 is a value that corrects the backlash of the gears constituting the detector drive motor 55c, or the degree of backlash between the rotation shaft 551c and the housing 55a. The housing 55a stays at the left collision position 0 without rotating.

Here, from the state after the end of step 1, the state in which the sensor drive motor 55c is driven to turn right (reverse rotation in step 1) will be described. , First, in the state after step 1 ends, the rotation restricting rib 556a on the left side of the casing 55a hits the frame 51. When the first correction pulse wave P2 is input, the sensor drive motor 55c only drives to rotate the backlash of the gear constituting the sensor drive motor 55c, or a part of the clearance between the rotation shaft 551c and the housing 55a.

When there is no such clearance, the rotation of the sensor drive motor 55c is transmitted to the casing 55a, and the casing 55a starts to rotate to the right.

That is, the casing 55a is operated even if the detector driving motor 55c operates until the The backlash of the gear of the sensor drive motor 55c, or the clearance between the connection of the rotating shaft 551c and the housing 55a is no longer available. The rotation of the sensor drive motor 55c is not transmitted, so it does not rotate.

Therefore, when the housing 55a is to be rotated (reversed) in the right direction from the state of step 1, even if the pulse of only the part of the housing 55a to be rotated is input to the detector drive motor 55c, in fact, the gear has a back There is a gap in the gap or each part, so the casing 55a moves more slowly than the sensor driving motor 55c.

That is, by the input pulse wave, the angle at which the detector drive motor 55c rotates is different from the angle at which the casing 55a rotates. It is impossible to rotate the casing 55a to the correct angle only by the pulse wave rotating at a predetermined angle.

In order to reduce such errors, in step 2, the first correction pulse wave P2 is input, and the sensor driving motor 55c is driven. Thereby, the error of the rotation angle made by the backlash or the clearance of each part becomes small.

Next, in step 3, the control mechanism inputs an initial position setting pulse wave P3 of a right-handed 3 degree rotation to the detector drive motor 55c. The detector drive motor 55c is driven from the left collision position 0 to the left stop position 1. Thereby, an interval of 3 degrees is formed from the left collision position 0 to the left stop position 1.

This interval is used to prevent the housing 55a from colliding with the frame body 51 when the human detection device 55 performs a rotation operation in the left-right direction. During the detection operation, the left stop position 1 is changed in the rotation direction.

In the above, steps 1 to 3 are the initial position setting operations before the human detection device 55 performs the human detection operation. In this way, the initial rotation position of the borrower detection device 55 is set, and according to the detection result of the human detection device 55, the air cleaner is oriented in the correct direction.

Next, when the detection of a person is started, in step 4, the control mechanism inputs a right-handed pulse of a 150-degree turn to the detector drive motor 55c. The sensor drive motor 55c is driven from the left stop position 1 to the right stop position 3.

Here, the infrared detector 55b detects infrared rays from the object as the detection field of vision, and inputs the signal to the control mechanism. Further, the control mechanism determines the position where a person is based on the input signal from the infrared detector 55b and the pulse wave of the detector driving motor 55c at the position where the signal is input.

Next, when the human detection device 55 rotates to the right stop position 3, in step 5, the control mechanism reverses the detector drive motor 55c to the left and inputs the second correction pulse wave P5 to the detector drive motor 55c. .

The number of input pulse waves of the second correction pulse wave P5 is a value that corrects the backlash of the gears constituting the detector drive motor 55c, or the degree of backlash between the rotation shaft 551c and the housing 55a.

This second correction pulse wave P5 is the same as the first correction pulse wave P2, and is used to reduce the error between the angle of rotation of the sensor drive motor 55c and the angle of rotation of the housing 55a by the input pulse wave. The second correction pulse wave P5 and the first correction pulse wave P2 are set so that the absolute value becomes P2> P5.

In the left collision position 0, the state in which the housing 55a hits the frame body 51 is obtained. In the left collision position 0, after being pressed in the direction of rotation, the clearance after the sensor drive motor 55c reverses is large.

In contrast, the right stop position 3 is located between the right stop position 3 and the right collision position 4 with a gap of 3 degrees. In the right stop position 3, the housing 55a does not collide with the frame body 51, so the clearance after the sensor drive motor 55c is reversed is small.

Therefore, by setting, the size of the second correction pulse wave P5 is smaller than the first correction pulse wave P5. The magnitude of the pulse wave P2 can appropriately correct the above errors.

Next, in step 6, the control mechanism inputs a left-rotating pulse wave P6 that rotates left by 150 degrees to the detector driving motor 55c. The detector drive motor 55c is driven from the right stop position 3 to the left stop position 1.

Here, the infrared detector 55b detects infrared rays from the object as the detection field of vision, and inputs the signal to the control mechanism. Further, the control mechanism determines the position where a person is based on the input signal from the infrared detector 55b and the pulse wave of the detector driving motor 55c at the position where the signal is input.

Next, when the human detection device 55 is rotated to the left stop position 1, in step 7, the control mechanism inputs the third correction pulse wave P7 to the detector drive motor 55c in order to reverse the detector drive motor 55c to the right.

The number of input pulse waves of the third correction pulse wave P7 is a value that corrects the backlash of the gears constituting the detector drive motor 55c, or the degree of backlash between the rotation shaft 551c and the housing 55a.

This third modified pulse wave P7 is the same as the first modified pulse wave P2, and is used to reduce the error between the rotation angle of the detector drive motor 55c and the rotation angle of the housing 55a by the input pulse wave. The third correction pulse wave P7 and the first correction pulse wave P2 are set so that the comparison between the magnitudes of the absolute values becomes P2> P7.

In the left collision position 0, the state where the case 55a hits the main body case 10 is obtained. In the left collision position 0, after being pressed in the direction of rotation, the clearance after the sensor drive motor 55c reverses is large.

In contrast, the left stop position 1 is located between the left stop position 3 and the left collision position 3 with a gap of 3 degrees. In the left stop position 1, the housing 55a does not collide with the frame body 51, so the clearance after the reverse rotation of the sensor drive motor 55c is small.

Therefore, by setting the size of the third correction pulse wave P7 to be smaller than the size of the first correction pulse wave P2, the above errors can be appropriately corrected.

As described above, the control mechanism performs the initial position setting operation before the human detection device 55 performs the human detection operation in steps 1 to 3. The control mechanism repeats steps 4 to 7 to detect the presence or absence of a person in the direction of the corresponding person detection device 55, and to grasp the position of the person.

In particular, coupled with the scanning operation of the detector driving motor 55c of the human detection device 55, the direction of the main body casing 10 is changed by the rotation of the automatic rotation unit 40, thereby detecting a person in a wider range.

Moreover, the control mechanism drives the rotation drive unit 44 and the rotation position detection mechanism 45 of the automatic rotation unit 40 according to the detection result of the person detection device 55, so that the front of the air cleaner faces the direction of human existence.

Then, the louver drive motor 53 is driven, and the louver 52 faces the vertical direction. The air intake port 82a faces the left-right direction of the air cleaner M. The air inlet 82a is 90 degrees away from the direction from the air cleaner to the person. The blowing wind is sent in the direction of the person. Therefore, the dust around the person is efficiently transported to the side of the air cleaner, and the blowing wind does not touch the person.

In this state, according to the detection results from the dust detector (not shown) and the odor detector (not shown), when there is a lot of dust in the indoor air or when the odor is strong, Until the amount of dust or odor is reduced, the rotation speed of the motor 21 of the fan unit 20 is increased, and the indoor air is strongly cleaned.

Moreover, in the above state, if the dust detector and odor detector cannot detect the dust or odor or dirt in the room within a certain period of time, or the detection value When it is smaller than the predetermined value, the human detection device 55 starts human detection again.

[Industrial possibilities]

The present invention is an air cleaner that can be used, for example, to clean indoor air.

Claims (7)

An air cleaner includes: a main body casing; a fan for taking indoor air into the interior of the main body casing; an air cleaning filter for purifying air taken in by the fan; a human detection device for detecting the position of a person; And a control mechanism that controls the aforementioned human detection device; operates in response to the detection result of the aforementioned human detection device, the aforementioned human detection device includes: an infrared detector; a detector holder formed of a material that transmits infrared rays; and The housing houses the infrared detector and the detector holder, and an infrared access opening is formed in the housing. The infrared access opening is a degree to which a finger cannot contact the detector holder. Big and small openings. The air cleaner according to item 1 of the scope of the patent application, wherein the infrared detector has a plurality of light receiving elements that detect infrared rays, the light receiving elements are arranged side by side in the longitudinal direction, and the infrared receiving opening is along the foregoing The arrangement of the light receiving element has a longer opening in the longitudinal direction. The air cleaner according to item 1 or 2 of the scope of the patent application, wherein the aforementioned human detection device is connected to a rotating shaft of a drive motor, and by the drive of the aforementioned drive motor, the aforementioned human detection device rotates. In the left-right direction, the direction of the infrared detector can be changed. The air cleaner according to item 1 or 2 of the scope of the patent application, wherein the thickness of the portion of the detector holder facing the infrared detector is less than 0.5 mm. The air cleaner according to item 1 or 2 of the scope of the patent application, wherein the infrared detector is arranged in the interior of the casing and is arranged to face upward from a level. The air cleaner according to item 1 or 2 of the scope of patent application, wherein the air cleaner has a rotating mechanism that changes the direction of the main body casing. An air cleaner includes: a main body casing; a fan for taking indoor air into the interior of the main body casing; an air cleaning filter for purifying air taken in by the fan; a human detection device for detecting the position of a person; And a control mechanism that controls the aforementioned human detection device; operates in response to the detection result of the aforementioned human detection device, the aforementioned human detection device includes: an infrared detector; a detector holder formed of a material that transmits infrared rays; and The housing houses the infrared detector and the detector holder, and an infrared access opening is formed in the housing, and the housing has an opening for preventing access from the infrared access and a finger contacting the detection. Part of the cage.