JP2013220206A - Suction tool for vacuum cleaner and the vacuum cleaner using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction tool for a vacuum cleaner which can uniformly radiate light forward of the suction tool, and can easily find dust on a cleaned surface, and the vacuum cleaner using the same.SOLUTION: A suction tool includes: a suction tool body having an inlet port open opposing to the cleaned surface; and a connecting pipe having one end attached to the suction tool body, wherein the suction tool body has: two LEDs 29 disposed on both right and left sides, respectively, across the center in a longitudinal direction of the suction tool body so as to radiate light on the cleaned surface positioned forward; two windows provided on a front face of the suction tool body so as to radiate the light from the two LEDs 29 disposed on both right and left sides forward; and a diffusion window 35 formed so as to cover the entire face of the windows opposing to the LEDs 29, and diffusing light, and the diffusion window 35 is formed to be thin in the center part, and to be thicker than the center part on both right and left sides of the center part so that a cross-sectional form of the diffusion window 35 is concave in a longitudinal direction of the suction tool body.

Description

  The present invention relates to a vacuum cleaner used in a general household and a suction tool thereof.

  Conventionally, as this type of vacuum cleaner and its suction tool, a configuration in which illumination means such as a light bulb is attached is known (for example, see Patent Document 1).

  In addition, it is known that the dirt on the surface to be cleaned can be easily seen by providing the illumination means at a low position on the front surface of the suction tool (see, for example, Patent Documents 2 and 3).

Japanese Patent Publication No. 61-50616 Japanese Patent No. 2998074 Utility Model Registration No. 3138321

  However, if the lighting means is provided in the front part of the suction tool like the suction tool of the conventional vacuum cleaner, the suction port opened below the suction tool is arranged behind the suction tool by the amount of the storage space of the lighting means. Will be. When the suction port is disposed rearward, the distance between the suction port and the front surface of the suction tool becomes long, and it becomes difficult to remove dust when the front surface of the suction tool is pressed against a wall such as a room.

  Further, when an LED (Light Emitting Diode) is used as the illumination means, the irradiation angle becomes narrower when priority is given to the brightness of the irradiation light. For this reason, there was a problem that the surface to be cleaned could not be illuminated uniformly with the conventional illumination means attached.

  Furthermore, in the conventional suction tool provided with the illumination means, it becomes easy to see dirt, but it is configured to illuminate the front of the suction tool far away, and the front of the suction tool that performs the actual cleaning work is unevenly irradiated. . For this reason, there was a problem that it was difficult to recognize the state of dirt on the surface to be cleaned.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and is capable of uniformly irradiating light in front of the suction tool, making it easy to find dust on the surface to be cleaned, and a vacuum cleaner using the same. The purpose is to provide.

  In order to achieve the above object, the vacuum cleaner suction tool of the present invention includes a suction tool body having a suction port opened to face a surface to be cleaned, a connection pipe having one end attached to the suction tool body, The suction tool body has a plurality of light irradiation portions of the same number arranged on the left and right sides of the suction tool body so as to irradiate light on the front surface to be cleaned. Two windows provided on the front surface of the suction tool main body so as to irradiate light from a plurality of arranged light irradiation parts forward, and formed so as to cover the entire surface of the window facing the light irradiation part, A diffusion window for diffusing light, and the diffusion window is formed so that the cross-sectional shape is concave in the longitudinal direction of the suction tool body, the central part is thin, and the left and right sides of the central part are thicker than the central part This is a vacuum cleaner suction tool.

  Thereby, the light irradiated from the light irradiation part spreads in the left-right outer direction by passing through the diffusion window. For this reason, since the light from a light irradiation part is uniformly irradiated ahead over the whole width | variety of the longitudinal direction of a suction tool main body, generation | occurrence | production of the spot of light decreases. As a result, the efficiency of the cleaning work can be improved by making it easier to visually check the dirt during the cleaning work. In addition, when light is irradiated from a light irradiation unit in a dark place such as a corridor, the light is soft and the eyes are less irritating and the eyes are less tired.

  ADVANTAGE OF THE INVENTION According to this invention, the suction tool for vacuum cleaners which can irradiate light uniformly ahead of a suction tool, and can easily find the dust on a to-be-cleaned surface, and a vacuum cleaner using the same can be provided.

Whole perspective view of the vacuum cleaner in embodiment of this invention The perspective view of the suction tool in embodiment of this invention The bottom view of the suction tool in embodiment of this invention The top view which removed the upper cover of the suction tool in embodiment of this invention The enlarged view of the LED part of the suction tool in embodiment of this invention AA sectional view of FIG. BB sectional view of FIG. CC sectional view of FIG. The side view of the suction tool in embodiment of this invention

  1st invention is equipped with the suction tool main body which has the suction inlet opened facing the to-be-cleaned surface, and the connection pipe attached to the suction tool main body at one end, and the suction tool main body is the front to-be-cleaned surface The light from the same number of light irradiators arranged on the left and right sides across the longitudinal center of the suction tool main body and the light from the light illuminators arranged on the left and right sides so as to irradiate light Two windows provided on the front surface of the suction tool main body so as to irradiate forward, and a diffusion window formed so as to cover the entire surface of the window so as to face the light irradiator and diffuse light. The window is a vacuum cleaner suction tool in which the central part is thin and the left and right sides of the central part are thicker than the central part so that the cross-sectional shape of the window is concave in the longitudinal direction of the suction tool body.

  Thereby, the light irradiated from the light irradiation part spreads in the left-right outer direction by passing through the diffusion window. For this reason, since the light from a light irradiation part is uniformly irradiated ahead over the whole width | variety of the longitudinal direction of a suction tool main body, generation | occurrence | production of the spot of light decreases. As a result, the efficiency of the cleaning work can be improved by making it easier to visually check the dirt during the cleaning work. In addition, when light is irradiated from a light irradiation unit in a dark place such as a corridor, the light is soft and the eyes are less irritating and the eyes are less tired.

  In the second invention, in particular, in the first invention, the cross-sectional shape is set so that the light incident on the diffusion window from the light irradiation unit is refracted outward with respect to the center of the suction tool body.

  Thereby, the light irradiated from the light irradiation part spreads in the left-right outer direction by passing through the diffusion window. For this reason, since the light from a light irradiation part is uniformly irradiated ahead over the whole width | variety of the longitudinal direction of a suction tool main body, generation | occurrence | production of the spot of light decreases. As a result, the efficiency of the cleaning work can be improved by making it easier to visually check the dirt during the cleaning work. In addition, when light is irradiated from a light irradiation unit in a dark place such as a corridor, the light is soft and the eyes are less irritating and the eyes are less tired.

  In the third invention, in particular, in the first or second invention, the plurality of light irradiation units are held on a single substrate by a holding member so that the optical axes of the plurality of light irradiation units can be set in arbitrary directions. Has been. Thereby, the freedom degree of the setting of the optical axis of each light irradiation part becomes large, and the irradiation angle of the light from a light irradiation part can be set reliably. For this reason, since the individual difference of each light irradiation part becomes small about the light diffusion condition, the suction tool which can irradiate the stable light can be produced.

  In a fourth aspect of the invention, in particular, in the first to third aspects of the invention, the light irradiator is composed of LEDs. Thereby, the light irradiation part of long life and low power consumption can be comprised.

  5th invention is the vacuum cleaner by which the connection pipe of the suction tool for vacuum cleaners of any one of Claims 1-4 was connected with the suction extension pipe so that attachment or detachment was possible.

  Thereby, since it is easy to visually confirm the dirty place and the clean place, it is possible to provide a cleaner that can be easily cleaned.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment)
An example of a vacuum cleaner provided with the suction tool for vacuum cleaners in embodiment of this invention is demonstrated concretely with reference to FIGS.

  FIG. 1 is an overall perspective view of the electric vacuum cleaner according to the embodiment of the present invention. FIG. 2 is a perspective view of the suction tool according to the embodiment of the present invention. FIG. 3 is a bottom view of the suction tool according to the embodiment of the present invention. FIG. 4 is a top view of the suction tool with the top cover removed in the embodiment of the present invention. FIG. 5 is an enlarged view of the LED portion of the suction tool according to the embodiment of the present invention. 6 is a cross-sectional view taken along the line AA in FIG. 7 is a cross-sectional view taken along the line BB in FIG. 8 is a cross-sectional view taken along the line CC of FIG. FIG. 9 is a side view of the suction tool according to the embodiment of the present invention.

  As shown in FIG. 1, the suction tool main body 8 according to the present embodiment is provided in a typical canister-type vacuum cleaner 1. That is, the canister type vacuum cleaner 1 (hereinafter simply referred to as a vacuum cleaner 1) includes a cleaner body 2, a suction hose 3, a hand operating part 4, a suction extension pipe 5, and a suction tool body 8.

  The vacuum cleaner body 2 includes an electric blower 9 and a dust collection chamber 10. One end of the suction hose 3 is detachably connected to the cleaner body 2 via a connection pipe 11. At the other end of the suction hose 3, a hand operation unit 4 is provided. One end of the suction extension tube 5 is detachably connected to the distal end of the hand operation unit 4. Further, a suction tool body 8 is detachably attached to the other end of the suction extension pipe 5.

  The vacuum cleaner main body 2 is provided with an electric blower 9 and a dust collection chamber 10 inside. A suction force is generated by the operation of the electric blower 9, and a suction force is generated in the suction tool main body 8 through the suction hose 3 and the suction extension pipe 5.

  When using the vacuum cleaner 1, the hand operating unit 4 is operated to turn on the cleaner body 2. Thereby, a suction force is generated in the suction tool body 8 by the operation of the electric blower 9. As a result, dust on the floor is sucked and collected in the dust collecting chamber 10 via the suction extension pipe 5, the suction hose 3, and the connection pipe 11.

  The user changes the area of the floor surface to be cleaned by gripping the hand operation unit 4 and moving the position of the suction tool body 8 on the floor surface.

  Further, when it is desired to clean a narrow area such as a corner of a room, a gap such as furniture, instead of the floor surface, the suction extension pipe 5 or the suction tool main body 8 is removed and cleaning is performed. Further, when it is desired to clean a position that is difficult for the user to see or at a high position, the separation suction tool 7 attached to the suction tool body 8 is removed from the suction tool body 8 by stepping on the pedal 6, and cleaning is performed.

  The specific configuration of the vacuum cleaner 1, that is, the vacuum cleaner body 2, the suction hose 3, the hand operation unit 4, the suction extension pipe 5, etc. is not particularly limited, and various configurations known in the field of vacuum cleaners are preferably used. Can be used.

  Next, the specific structure of the suction tool main body 8 which concerns on this Embodiment is demonstrated.

  As shown in FIG. 2, the suction tool main body 8 according to the present embodiment is provided with a connection pipe 12 connected to the suction extension pipe 5 in the rear part near the center of the suction tool main body 8. It is configured to be rotatable. The connection pipe 12 forms a part of the outline of the suction tool body 8 and is configured behind the separation suction tool 7 that is detachably provided from the suction tool body 8. The suction tool body 8 is provided with a pedal 6 on either the left or right side of the separation suction tool 7. When the pedal 6 is pushed, the separation suction tool 7 is pushed up from the suction tool body 8 and thus separated.

  As shown in FIGS. 3 and 4, at the rear of the suction tool main body 8, two rooms of an electric motor room 14 and a control room 13 which are divided into left and right by a separate suction tool 7 are configured. In front of the control chamber 13 and the motor chamber 14, a suction port 15 opened below the suction tool body 8 is provided. A rotary brush 16 that is rotatably supported while facing the suction port 15 is accommodated in the suction tool body 8. The electric motor chamber 14 accommodates an electric motor 18 that is a drive source for rotating the rotary brush 16. The rotating brush 16 is stretched by an electric motor 18 and a belt 17. The control chamber 13 includes a switch lever 20 provided so as to be able to protrude and retract from the lower surface of the suction tool main body 8 and a switch cover 21 that rotatably holds the switch lever 20. A limit switch 22 is provided on the switch cover 21. The switch lever 20 controls ON / OFF of the limit switch 22. The switch lever 20 is configured to turn off the limit switch 22 when the suction tool body 8 is lifted up in the air, and is controlled so that the rotating brush 16 stops when the suction tool body 8 is lifted up in the air. The limit switch 22 is attached to the control board 23 by wiring. The control board 23 receives power from the cleaner body 2 via the terminal 24 and supplies power to the electric motor 18. Further, the protection device 25 installed on the control board 23 protects the electric motor 18 by stopping the current when an overcurrent occurs due to the electric motor 18 being restrained or the like. The protection device 25 is composed of Posister (registered trademark) or the like.

  A bumper 26 is provided from the front surface to the side surface of the suction tool body 8. The bumper 26 protects the wall so as not to damage the wall when the suction tool body 8 collides with the wall. Between the bumper 26 and the suction port 15, a porous shape for reducing noise of the suction tool body 8 is provided. A silencer 40 is configured by incorporating a cushioning material such as urethane between the bumper 26 and the suction port 15.

  A suction port 41 for taking in air from the upper part of the suction tool body 8 is provided. The suction port 41 is configured to be openable and closable by a shielding plate 27 that is rotatably held on the bumper 26.

  As shown in FIGS. 4 and 5, LED boards 28 are held on the left and right side surfaces of the shielding plate 27. The LED substrate 28 holds two LEDs 29a and 29b, which are two light irradiators, so as to be arranged in parallel in the longitudinal direction of the suction tool body 8, and a total of four LEDs 29 are provided. The LED 29 is held by a holding member 30 attached to the LED substrate 28 so that the optical axis has a specified angle. The LED 29 a disposed on the center side of the suction tool body 8 is held by the holding member 30 so that the optical axis thereof is about 45 degrees with respect to the direction orthogonal to the longitudinal direction of the suction tool body 8. Further, the LED 29 b disposed outside the suction tool body 8 is held by the holding member 30 so that the optical axis thereof is about 20 degrees with respect to the direction orthogonal to the longitudinal direction of the suction tool body 8. As described above, the optical axis of the LED 29 a arranged on the center side of the suction tool body 8 is set to face the center side of the suction tool body 8. In addition, the optical axis of the LED 29 b disposed outside the suction tool body 8 is set to face outward from the optical axis of the LED 29 a disposed on the center side of the suction tool body 8. Moreover, it is preferable to arrange | position LED29 in the vicinity of the left-right both ends of the suction tool main body 8 as shown in FIG. By disposing the LEDs 29 in the vicinity of the left and right end portions of the suction tool main body 8, the light to be cleaned from the LEDs 29 can be more uniformly applied to the surface to be cleaned in front of the suction tool main body 8.

  Further, as shown in FIGS. 6 and 7, a slope A31 is provided on the bumper 26 from the front surface of the bumper 26 to a location that is recessed about 22 mm. A fixing portion 42 for holding each LED board 28 is installed at an end portion inside the slope A31, and each LED 29 is arranged on the slope A31 so as to illuminate the lower part of the suction tool body 8. A slope B32 is provided at a distance of about 19 mm from the front surface of the bumper 26 in front of the slope A31 and connected to the slope A31 from the middle of the slope A31.

  The slope A31 and the slope B32 are preferably formed such that the depression angle of the slope B32 is larger than the depression angle of the slope A31, and the depression angle of the slope A31 is in the range of 15 degrees to 25 degrees. It is preferable that the depression angle of B32 is set in the range of 25 degrees or more and 35 degrees or less. More preferably, the depression angle of the slope A31 is set to 20 degrees, and the depression angle of the slope B32 is set to 30 degrees. By setting the depression angles of the slope A31 and the slope B32 in the above ranges, the light emitted from the LED 29 can also illuminate directly under the front surface of the suction tool body 8. As a result, since light can be uniformly irradiated in front of the suction tool, it becomes easier for the user to visually check the dirt during the cleaning operation, and the efficiency of the cleaning operation can be improved.

  Moreover, since LED29 was installed in the upper part of the suction tool main body 8, since opening of the suction inlet 15 can be set in the same position as the past, a suction tool front part can be made thin. Thereby, since the suction inlet 15 can be brought close to the wall of the room to be cleaned, the cleaning performance at the wall can be maintained while the LED 29 is mounted. Here, the depression angles of the slope A31 and the slope B32 are angles formed by the slope A31 and the slope B32 that are inclined forward and downward with the surface to be cleaned.

  The left and right sides of the light guide path 50 constituted by the slope A31 and the slope B32 are surrounded by the wall surface 34 so that the light emitted from the LED 29 does not leak from other than the front surface of the suction tool body 8 (see FIG. 5).

  On the front surface of the suction tool main body 8, two windows 33 are provided for guiding the light emitted from the respective LEDs 29 through the light guide path 50 and irradiating the front of the suction tool main body 8 outside. The width of the window 33 that faces the fixed portion 42 and corresponds to the light exit is set to about 60 mm, and the wall from the window 33 to the fixed portion 42 is covered by the wall surface 34. Since the LED 29 has a high brightness, the luminous flux is high, and the surface to be cleaned cannot be illuminated uniformly unless the light emitted from the LED 29 is diffused. For this reason, the window 33 is provided with a diffusion window 35. The diffusion window 35 is formed so as to cover the upper surface of the light guide path 50 so as to straddle the left and right wall surfaces 34a and 34b and to be substantially parallel to the slope B32 across the two left and right wall surfaces 34a and 34b. The upper surface diffusion portion 35b is formed. The cross-sectional shape covering the window 33 of the diffusion window 35 viewed from the upper surface of the suction tool body 8 is a concave lens. That is, the cross-sectional shape of the diffusion window 35 is thin at the center, and the wall thickness is set so that the left and right sides of the center are thicker than the center, and the concave shape is provided in a spherical shape. When the light emitted from the LED 29 reaches the diffusion window 35, the incident angle of the light to the diffusion window 35 is set so that the light is diffused toward the left and right ends (outside) of the suction tool body 8 due to the concave shape. ing.

  The wall surfaces 34 installed on the left and right side surfaces of the diffusion window 35 are formed so as to connect the upper surface diffusion portion 35 b and the light guide path 50. The wall surface 34 is composed of two wall surfaces: a wall surface 34 a provided on the center side of the suction tool body 8 and wall surfaces 34 b provided on the left and right ends of the suction tool body 8. The wall surface 34 b is provided in the front-rear direction, that is, in a direction substantially orthogonal to the suction tool main body 8, and the wall surface 34 a is formed so that the distance from the wall surface 34 b becomes narrower from the window 33 toward the LED 29. This prevents the light emitted from the LED 29 from spreading to the center side. Thus, since the light from the LED 29 is uniformly irradiated forward by the diffusion window 35, the occurrence of light spots is reduced. As a result, when light is emitted from the LED 29 in a dark place such as a corridor, the light becomes soft light and the eyes are less irritating and the eyes are less tired. Furthermore, by holding the LEDs 29 by the holding member 30, the degree of freedom in setting the optical axis of each LED 29 is increased, and the irradiation angle of light from the LEDs 29 can be set reliably. For this reason, since the individual difference of LED29 becomes small about the light diffusion condition, the suction tool which can irradiate the light stably can be produced.

  The cross-sectional shape of the upper surface diffusion portion 35 b of the diffusion window 35 as viewed from the side surface side of the suction tool body 8 is set to be substantially parallel to the optical axis of the LED 29. In addition, the slope A31 and the slope B32 are formed so that the depression angle of the inclination B32 is larger than the depression angle of the inclination A31. Therefore, the cross-sectional shape of the space (not shown) formed by the upper surface diffusing portion 35b of the diffusion window 35 and the light guide path 50 formed by the slope A31 and the slope B32 is increased toward the front of the suction tool body 8. It is formed so as to spread downward.

  Further, an angle R36 is provided at a joint portion between the front surface diffusion portion 35a that covers the window 33 of the diffusion window 35 and the upper surface diffusion portion 35b that covers the upper surface of the light guide path 50 of the diffusion window 35. The corner R36 is formed so as to form an R shape downward in the forward direction of the suction tool body 8. The light emitted from the LED 29 first enters the angle R36 and is refracted in the diffusion direction. The light refracted in the diffusing direction is reflected on the inner surface of the ceiling of the suction tool main body 8 and can be refracted further downward to illuminate directly under the suction tool main body 8.

  Further, the inner wall of the diffusion window 35 is subjected to diffusion processing such as embossing, so that light is uniformly irradiated from the LED 29 from the diffusion window 35 and the occurrence of light spots is reduced. Thereby, when light is emitted from the LED 29 in a dark place such as a corridor, the light becomes softer than the case where the light is diffused only by the diffusion window 35, and the eyes are less irritating and the eyes are less tired. Further, the outer portion covering the light guide path 50, the wall surface 34, and the upper surface of the diffusion window 35 is colored in a dark color to prevent light from leaking from the outer portion. Thereby, since light does not leak to the outside of the outer shell part, the light emitted from the LED 29 comes out only from the two windows 33 provided on the front surface of the suction tool body 8. For this reason, when light is emitted from the LED 29 in a dark place such as a corridor, there is no extra light, so there is little irritation in the eyes and the eyes are less tired.

  Each LED board 28 is connected to the control board 23 by a harness. The control board 23 is provided with a circuit for supplying power to the LEDs 29. In addition, a changeover switch 37 for turning on and off each LED board 28 is provided. As shown in FIGS. 6 and 9, the changeover switch 37 is provided in the middle of the harness of either the left or right LED board 28, and is held and fixed so that it can be operated from the side surface of the bumper 26. The changeover switch 37 is provided in the bumper 26 and is held by a cover 38 so as not to drop off. In addition, the cover 38 is provided with a deep in-row structure so that dust and static electricity do not easily enter the attachment portion of the changeover switch 37. The extended distance plate A39 is configured so that static electricity does not fly from the joint surface of the bumper 26 to the control board 23.

  When static electricity flows from the joint surface of the switch cover 21, the element that supplies power to the LED 29 is destroyed. For this reason, as shown in FIG. 8, the extended distance plate B43 is provided on the joint surface of the switch cover 21 to increase resistance to static electricity. The motor 18 and the LEDs 29 are also turned on and off by the operation of the switch lever 20. When the switch lever 20 is instantaneously turned off, the LED 29 appears to blink. For this reason, this is prevented by adopting a structure in which a capacitor or the like is placed in the control board 23.

  Next, the operation when the suction tool body 8 is used will be described.

  The electric blower 9 is operated by inserting a power cord (not shown) connected to the vacuum cleaner body 2 into a 100V outlet and operating the hand operating unit 4 to turn on the power. Suction air is generated in the dust collection chamber 10 by the negative pressure generated by the electric blower 9. The generated suction air reaches the suction tool body 8 through the connection pipe 11, the suction hose 3, and the suction extension pipe 5, and the surface to be cleaned is cleaned by the suction tool body 8. Further, when cleaning a high place or a narrow place, it is difficult to lift the suction tool body 8 because it is heavy while the suction tool body 8 remains connected. Moreover, since the suction tool main body 8 is wide, the suction tool main body 8 does not enter the gap. In such a case, the separated suction tool 7 is separated from the suction tool body 8 by stepping on the pedal 6 and used.

  A negative pressure is generated at the suction port 15 of the suction tool body 8 in response to the suction air from the electric blower 9. When a negative pressure is generated at the suction port 15, a suction force for taking in air is also generated from the suction port 41 formed at the upper part of the suction port 15. In order to take in air from the suction port 41, the shielding plate 27 is opened, and air is taken in from the upper part of the suction tool body 8. Around the suction tool main body 8, a lot of dusts generated by cleaning work or the like are scattered. When the shielding plate 27 is opened and the suction port 41 is opened, these dusts can be sucked. Moreover, many holes are opened at equal intervals in the ceiling part of the suction inlet 15, and the silencer 40 which covered the upper part of the hole with urethane etc. is comprised. Of the noise generated inside the suction port 15, the noise in the frequency band of the A characteristic is drawn into the hole and reflected inside the silencer 40 to reduce the noise. Thereby, the noise which generate | occur | produces at the time of cleaning work can be made low.

  The suction tool body 8 in the present embodiment incorporates an electric motor 18 and is generally recognized by the name of a power nozzle. The power nozzle is supplied with power from the cleaner body 2 and drives the electric motor 18. The electric motor 18 transmits power to the rotating brush 16 by the belt 17 to efficiently remove dust. By connecting the separation suction tool 7 to the terminal 24, power is supplied to the control board 23. For this reason, when the separation suction tool 7 is removed, the electric power is not supplied and the electric motor 18 stops.

  Further, the control board 23 is provided with a limit switch 22, and by detecting the surface to be cleaned by the switch lever 20, it is possible to detect whether the suction tool body 8 is in the air or on the ground. Thereby, when the rotary brush 16 can be touched (in the air or turned over), the rotation of the rotary brush 16 is stopped.

  The protection device 25 of the control board 23 determines the state of the rotary brush 16 from the current value of the electric motor 18. When the rotating brush 16 is restrained, the current value of the electric motor 18 increases. The protection device 25 detects the current value and interrupts the current to stop the motor 18 and protect it. The protection device 25 can be used again after being disconnected from the 100V power source for about 10 to 30 minutes to return to a normal state.

  Each LED board 28 is connected to the control board 23 to supply power to each LED 29. The turning on / off of the LED 29 is controlled by the limit switch 22 and also by a changeover switch 37 provided on the side surface of the bumper 26. The changeover switch 37 can switch the LED 29 on and off regardless of the use state of the suction tool body 8. On the other hand, the limit switch 22 detects whether the suction tool body 8 is in contact with the surface to be cleaned or in the air, and switches on / off.

  Thus, when the situation where the power supply to the electric motor 18 and the control board 23 is interrupted occurs, the power supply to each LED 29 is also stopped and each LED 29 is turned off.

  The four LEDs 29 receive power from the LED substrate 28 and irradiate the surface to be cleaned with a set irradiation angle. At this time, the two LEDs 29a whose irradiation angle is set to the inner side (center side) (arranged on the center side of the suction tool body 8) illuminate a substantially triangular shape on the surface to be cleaned at the center of the suction tool body 8. Irradiate. On the other hand, the two LEDs 29b whose irradiation angles are set to the outside (arranged outside the suction tool body 8) irradiate light forward from the left and right ends of the suction tool body 8. Depending on the setting of the irradiation angle of each LED 29a, 29b, a part of these irradiated light is overlapped.

  Further, since the LED 29 is a high-luminance type, the diffusion angle of light emitted from the LED 29 is narrow, and is often about 10 to 30 degrees around the optical axis of the LED 29. The width of the suction tool body 8 is about 250 mm. In order to make the user surely see the dust on the front surface of the suction tool body 8, it is preferable to irradiate light uniformly over the entire width of the suction tool body 8. For this purpose, the light emitted from the LED 29 is diffused in the left-right direction by forming the diffusion window 35 in a concave lens shape. As a result, the diffusion angle of each light becomes 50 to 60 degrees, illuminates the area where the light does not reach even if the above-described substantially triangular irradiation portion and the front irradiation portion are combined, and covers the entire width of the suction tool body 8. Thus, the light can be uniformly irradiated (see FIG. 5). The inner surface of the diffusion window 35 is textured, but when light is diffused, the illuminance decreases. For this reason, the embossing setting is suppressed to such an extent that the illuminance is reduced by about 10% with respect to the original LED 29.

  The irradiation range of light from the LED 29 is adjusted not only in the left and right directions but also in the vertical direction, so that light can be irradiated directly below the front surface of the suction tool body 8 and to a place 50 to 60 mm away from the front surface.

  The light emitted from the LED 29 installed on the slope A31 cannot be escaped at the depression angle of the slope A31, just below the front surface of the suction tool body 8. For this reason, by providing a slope B32 having a larger depression angle than the slope A31 in front of the slope A31, a sufficient lower angle is provided so that the light reaches the lower end of the diffusion window 35. The light applied to the lower end of the diffusion window 35 is diffused and can illuminate the area immediately below the front surface of the suction tool body 8.

  Moreover, if the upper surface of the suction tool main body 8 shines when seen from the upper part of the suction tool main body 8, the user may feel dazzling and get uncomfortable. For this purpose, the bumper 26 that covers the top of the suction tool body 8 is made black so as to absorb light, thereby blocking the light. For this reason, since the upward irradiation angle of the LED 29 becomes narrow, the light is reflected inside the diffusion window 35. An angle R36 is provided at the upper end of the front diffusion portion 35a of the diffusion window 35. The angle R36 of the diffusion window 35 has the effect of increasing the light diffusion angle, like the concave lens. The light incident on the corner R36 of the diffusion window 35 can illuminate a place 50 to 60 mm away from the front surface of the suction tool body 8.

  Due to the above effects, the light emitted from each LED 29 can illuminate the surface to be cleaned uniformly over the entire width of the suction tool body 8 to a location 50 to 60 mm away from directly under the front surface of the suction tool body 8. As a result, the actual size of the dust can be increased by a shadow extending from the back to the solid dust on the surface to be cleaned extending forward. As a result, it becomes easier for the user to find dust.

  Since the suction tool body 8 moves back and forth and left and right while in contact with the surface to be cleaned, static electricity is likely to be generated particularly in dry conditions. In addition, strong static electricity may be generated when a large amount of fine dust is sucked under the same conditions. In general, when static electricity flows to the control board 23, it is grounded to the main body side, and static electricity that causes damage to the motor 18 and the LED 29 does not flow. However, in a situation where static electricity directly flies to each component, the control board 23 cannot prevent damage due to static electricity, and each component may be damaged. Therefore, by providing the extended distance plate B43 as shown in FIG. 8 so that the distance reaching each component is the same as the electrostatic capacity (volt) of static electricity, the electrostatic force can be weakened.

  In addition, there are parts on the control board 23 that are easily damaged when static electricity directly flies. In many cases, the same countermeasures as described above are often taken because static electricity flows to the parts and breaks from the joints between the parts. Also in the present embodiment, the extended distance plate A39 is configured as shown in FIG. 6 to protect the components on the control board 23 from static electricity.

  With the above configuration, in the vacuum cleaner suction tool according to the present embodiment, the LED 29 illuminates the dust on the surface to be cleaned with light, so that the user can easily find the dust and improve the efficiency of the cleaning work. be able to. Moreover, by irradiating light uniformly on the surface to be cleaned, the user does not get too dazzled when viewing the front surface of the suction tool body 8, and eyes do not get tired even if they are looking for a long time.

  In the above-described embodiment, the LED has been described as an example of the light irradiation unit. However, the light irradiation unit may be another solid light source such as an organic EL.

  As described above, the application field of the present invention is not particularly limited, and can be widely used as a vacuum cleaner and a vacuum cleaner suction tool.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Vacuum cleaner main body 3 Suction hose 4 Hand operation part 5 Suction extension pipe 6 Pedal 7 Separation suction tool 8 Suction tool main body 9 Electric blower 10 Dust collection chamber 11 Connection pipe 12 Connection tube 13 Control room 14 Motor room 15 Suction Port 16 Rotating brush 17 Belt 18 Motor 20 Switch lever 21 Switch cover 22 Limit switch 23 Control board 24 Terminal 25 Protection device 26 Bumper 28 LED board 29, 29a, 29b LED
30 Holding member 31 Slope A
32 Slope B
33 Window 34, 34a, 34b Wall 35 Diffusion window 35a Front diffuser 35b Upper diffuser 36 Angle R
37 Changeover switch 38 Cover 39 Extended distance plate A
40 Silencer 41 Suction port 42 Fixed part 43 Extended distance plate B
50 Light guide

Claims (5)

A suction tool body having a suction port that opens opposite the surface to be cleaned;
A connection pipe having one end attached to the suction tool body,
The suction tool body is
A plurality of light irradiators of the same number arranged on both the left and right sides across the longitudinal center of the suction tool main body so as to irradiate the front surface to be cleaned;
Two windows provided on the front surface of the suction tool main body so as to irradiate the light from the plurality of light irradiation portions arranged on the left and right sides forward,
A diffusion window that is formed so as to cover the entire surface of the window so as to face the light irradiation unit, and diffuses light;
Have
The vacuum cleaner suction tool, wherein the diffusion window has a thin central part and a thicker left and right sides of the central part than the central part so that a cross-sectional shape of the diffusion window is a concave shape in the longitudinal direction of the suction tool body. The vacuum cleaner suction tool according to claim 1, wherein the cross-sectional shape is set so that light incident on the diffusion window from the light irradiation unit is refracted outward with respect to a center of the suction tool body. The electric cleaning according to claim 1 or 2, wherein the plurality of light irradiation units are held by a holding member on a single substrate so that optical axes of the plurality of light irradiation units can be set in arbitrary directions. Air suction tool. The vacuum cleaner suction tool according to any one of claims 1 to 3, wherein the light irradiating unit is configured by an LED. The vacuum cleaner with which the said connection pipe | tube of the vacuum cleaner suction tool of any one of Claims 1-4 was connected with the suction extension pipe | tube detachably.

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