JP2023078850A - vacuum cleaner - Google Patents

Abstract

To eliminate irregular color in a vacuum cleaner including LEDs for improving dust visibility.SOLUTION: A vacuum cleaner includes: a fan motor for generating suction force; and a suction port body for sucking dust sucked by the fan motor. In the vacuum cleaner, the suction port body includes a plurality of light sources. At least one light source among the light sources having the same luminous color in the plurality of light sources has luminance different from that of the other light sources having the same color.SELECTED DRAWING: Figure 2

Description

The present invention relates to vacuum cleaners.

For example, when cleaning with an electric vacuum cleaner, the user visually checks the surface to be cleaned, such as the floor and the top of the shelf, and collects dust and other debris. At this time, if the visibility of the dust is low from the user's point of view, the cleaning may be left uncleaned, or the efficiency may be lowered by cleaning the place where there is no dust. Therefore, the technique described in Patent Document 1 is known as a technique for improving the visibility of dust on a surface to be cleaned. In Patent Document 1, a suction body having a suction port for sucking gas containing dust and a light-emitting diode arranged in the suction body are provided, and are arranged so as to be in contact with the suction body or substantially parallel to the floor surface. The light-emitting diodes are arranged in the suction body so that the irradiation range of the light emitted from the light-emitting diodes and emitted to the outside of the suction body spreads downward from the direction extending substantially parallel to the floor surface. A vacuum cleaner is listed.

WO2008/035478

In the technique described in Patent Document 1, no consideration is given to the irradiation range of the light-emitting diodes on the floor surface. For this reason, there is a problem that the irradiated light does not sufficiently spread over the surface to be cleaned, and the dust is overlooked. Also, when illuminating the floor with LEDs of two colors, green and white, as light-emitting diodes, the white light has a higher brightness than the green, so the green light emitted from the floor is canceled out by white. It turned out that there was a problem that the green and white colors were clearly separated. Due to this situation, it is assumed that the user will feel uncomfortable with the way the two colors are mixed while cleaning, and there will be a problem that the improvement of the visibility of the garbage by the LED light is not optimized. SUMMARY OF THE INVENTION An object of the present invention is to provide a mouthpiece that irradiates the illuminated floor with light having no color unevenness when the floor is illuminated with LEDs of two colors, green and white.

The present invention is a vacuum cleaner comprising a fan motor that generates a suction force and a suction body that sucks up dust sucked by the fan motor, wherein the suction body has a plurality of light sources, 1. A vacuum cleaner comprising a plurality of light sources having the same emission color among the plurality of light sources, wherein at least one light source has a luminance different from that of other light sources of the same color.

Advantageous Effects of Invention According to the present invention, it is possible to provide an electric vacuum cleaner capable of eliminating color unevenness of LEDs and efficiently illuminating a floor surface with light, and an electric vacuum cleaner having the same.

It is a side view which shows an example of a vacuum cleaner. FIG. 4 is a perspective view of the mouthpiece as viewed from above; Front view of the mouthpiece. FIG. 4 is a perspective view of the mouthpiece as viewed from the bottom side; FIG. 4 is a top view showing a state in which the upper case is removed from the mouthpiece. The perspective view which shows the state which removed the upper case from the mouthpiece. The perspective view which shows an LED board. Hue circle of the Munsell color system that describes the hue of illuminating light. The perspective view of an upper case. Front view of the upper case. Front view of the lens. Top view of the lens. The perspective view of an LED holder. The front view of an LED holder. The top view of an LED holder. XII-XII line sectional view of FIG. FIG. 4 is a top view showing a state in which the upper case is removed from the mouthpiece. The top view which shows the back surface side of an upper case. Bottom view of the mouthpiece. Sectional drawing of XXXIX-XXXIX of FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

FIG. 1 is a side view showing an example of a side view of a vacuum cleaner to which the mouthpiece of the present embodiment is applied. A vacuum cleaner 1000 is of a cyclone type, and includes a cleaner body 1 , a dust case (dust collector) 2 and a rechargeable battery 3 .

The cleaner main body 1 includes a main body portion 10 , a motor case portion 11 and a handle portion 12 . The motor case portion 11 accommodates an electric blower (not shown) that generates a suction force. The handle portion 12 is provided with an operation switch SW for switching the suction force.

One end of the extension pipe 5 is connected to a connection port of the cleaner body 1 so as to communicate with the dust case 2 of the cleaner body 1 . The other end of the extension pipe 5 is connected to the mouthpiece 400 . The extension pipe 5 is formed with a ventilation passage (not shown) and has wiring (not shown) for electrically connecting the rechargeable battery 3 and a brush motor (not shown) of the suction body 400 . The extension pipe of the present embodiment is manufactured using a computational technique called topology optimization technology, which is lightweight and strong. has an uneven shape.

Note that the vacuum cleaner 1000 is not limited to the illustrated stick type vacuum cleaner, and can be applied to power cord type or cordless vacuum cleaners such as handy type vacuum cleaners and canister (cylinder type) vacuum cleaners. can do.

FIG. 2 is a perspective view of the mouthpiece as viewed from above. As shown in FIG. 2, the suction body 400 is of a power brush type in which a brush is rotated by a motor, and includes a suction mouth main body 20 and a joint portion 30 rotatably connected to the suction mouth main body 20. configured as follows.

The mouthpiece main body 20 is configured by combining a lower case 21, an upper case 22, a lens 63, and a unit cover 24. - 特許庁The lower case 21, upper case 22, lens 63, and unit cover 24 are all made of a synthetic resin material. For example, the lower case 21 and the upper case 22 are made of ABS resin or the like. The lens 63 is made of acrylic resin. The unit cover 24 is made of resin such as glass-filled nylon that is harder than ABS resin. A bumper portion 23 is provided on the lower case 21 . The bumper portion 23 is made of an elastomer resin and formed by double molding with the lower case 21 . In this way, the unit cover 24 and the bumper portion 23, which are parts that the user tends to hit against the wall or the like during cleaning, are made of strong members.

FIG. 3 is a front view of the mouthpiece. 3 shows a state in which the suction body 400 in the state of FIG. 2 is viewed from the front. As shown in FIG. 3, the bumper portion 23 is provided on the front side of the lower case 21 and extends in the width direction (horizontal direction). Also, the lower portion of the bumper portion 23 is formed shorter than the width dimension of the mouthpiece main body 20 . The upper portion of the bumper portion 23 extends to the right end of the lower case 21 at its right end and to the unit cover 24 at its left end.

The mouthpiece main body 20 is formed so that the upper case 22 is shorter in the left-right direction (width direction) than the lower case 21 . In other words, the mouthpiece main body 20 is configured such that a part of the lower case 21 protrudes from the right end of the upper case 22 and the unit cover 24 protrudes from the left end of the upper case 22 .

FIG. 4 is a perspective view of the mouthpiece as viewed from the bottom side. As shown in FIG. 4 , the suction body 400 includes a rotating brush (rotary cleaning body) 40 and a bearing cover 50 . Details of the bearing cover 50 will be described later.

The rotating brush 40 is arranged along the left-right direction (width direction) of the mouthpiece main body 20 and is rotatably supported in the brush chamber Q. As shown in FIG. In addition, the rotating brush 40 is continuously provided from one end side to the other end side in the left-right direction (the axial direction of the rotating brush 40) of the mouthpiece main body 20. As shown in FIG.

Moreover, the rotating brush 40 includes a plurality of types of brushes such as brushes having different hardnesses, heights, etc., and the brushes are spirally arranged. The joint part 30 is connected to the extension pipe 5 (see FIG. 1) and used in a stick state, or directly connected to the cleaner main body 1 and used in a handy state. The joint portion 30 includes a straight pipe portion 31 , a rotary joint portion 32 and a rotary cover 33 .

Further, the lower case 21 is formed with legs 25 on the rear surface of the lower case 21 . The leg portion 25 is resin-molded integrally with the lower case 21 . Further, the leg portion 25 has extending portions 25a, 25a extending rearward from the vicinity of both left and right sides of the rotary joint portion 32, and a connecting portion 25b connecting the rear ends of the extending portions 25a. It is configured to have a U-shape when viewed. A wheel 25c is rotatably supported by the connecting portion 25b.

Further, the lower case 21 is provided with a brush 120 having a shape along the rotating brush 40 behind the rotating brush 40 . By providing such a brush 120, dust written from the front by the rotating brush 40 is prevented from flying backward. Further, the brush 120 has a rotating shaft (not shown) parallel to the rotating brush 40 and is configured to rotate in the front-rear direction.

FIG. 5 is a top view showing a state in which the upper case 22 is removed from the mouthpiece. FIG. 6 is a perspective view showing a state in which the upper case is removed from the mouthpiece. FIG. 7 is a perspective view of an LED substrate 60 that is a light source. As shown in FIGS. 5 and 6, the lower case 21 accommodates an LED board 60 (wiring board) on which LEDs (Light Emitting Diodes) 61, 61 as a plurality of light emitting elements are mounted. A lens 63 fixed to the upper case 22 is arranged in front of the LED board 60 so as to cover the LED board 60 from above. As shown in FIG. 7, the LED board 60 has a plurality of LEDs 6101G, 6102W, 6103G, 6104W, and 6015G in order from the right. Note that 6101G, 6103G, and 6015G emit green light, and 6102W and 6104W emit white light. That is, they are alternately arranged in the order of green, white, green, white, and green from right to left in the left-right direction (width direction) of the mouthpiece 400 . In Example 1, the green and white LEDs are turned on at the same time, and the floor surface is irradiated with light in a state in which the LEDs of the plurality of colors are mixed. The reason for selecting LEDs of multiple colors of green and white will be described.

FIG. 8 is a hue wheel of the Munsell color system (hereinafter referred to as Munsell color wheel as appropriate) for explaining the hue of light to be irradiated. The Munsell color wheel is an annular Munsell color chart having a center P0, and in the illustrated example, has 20 hues obtained by dividing the circumference into 20 equal parts. Symbols on the circle represent hues (synonymous with "color"), R for red, Y for yellow, G for green, B for blue, and P for purple. For example, if the light source irradiates light of an absorption color, which is a color easily absorbed by the surface to be cleaned, from the light source, the surface to be cleaned absorbs the light. can be easily confirmed. Therefore, for example, the LED 61 emits light of the color absorbed by the surface to be cleaned, and in the Munsell color ring shown in FIG. A non-similar color light having a hue belonging to the region of . By irradiating light of non-similar colors, the surface to be cleaned can easily absorb the light, suppress reflection, and make the dust more conspicuous, thereby improving the visibility of the dust. For example, regarding hue C1 of the surface to be cleaned, the hues adjacent to hue C1 among the 20 hues are hue 5YR and hue 10YR. If the area between hue 5YR and hue 10YR including hue C1 is defined to be similar in color to hue C1 of the surface to be cleaned, the light source emits light of a non-similar color, which is a hue belonging to an area other than the similar color. Irradiate. When monochromatic light is irradiated, any one color can be selected from non-similar colors, and when multiple colors of light L are irradiated, arbitrary two or more colors can be selected.

In Example 1, green (5G) and white LEDs are lit at the same time, and the floor surface is irradiated with light in a state in which the LEDs of multiple colors are mixed.

For example, if the surface to be cleaned is wooden flooring, the color is generally close to the color of wood between yellow (5Y) and purple (5P). For this reason, if light with a hue in a region other than the region between hue 5Y and hue 5P, specifically, for example, light with a hue between yellowish green (7.5GY) and blue (5B) is irradiated, , the color difference between the dust and the surface to be cleaned can be increased, and the dust can be easily conspicuous. Therefore, in Example 1, a green LED is provided.

Furthermore, in this first embodiment, from the right, 6101G (green), 6102W (white), 6103G (green), 6104W (white), and 6015G (green), among the multiple color LEDs, the central 6103G (green) A current 30% or more larger than 6101G (green) and 6015G (green) at both ends is passed. By increasing the brightness of the green light in the center and decreasing the brightness of the green light at both ends, the mixture of the light on the floor illuminated when the white LEDs 6102W (white) and 6104W (white) emit light at the same time. Get better. Therefore, 6103G (green) has a resistor with a different magnitude of resistance than 6101G (green) and 6015G (green).

Further, behind the LED substrate 60, a channel portion 64 (a member forming a channel) that constitutes a part of the channel that communicates with the joint portion 30 is integrally formed.

An electric motor 70 as a driving source for driving the rotating brush 40 is arranged in the lower case 21 . The electric motor 70 is located on one end side (left side) in the left-right direction. A control board 80 for controlling the rotating brush 40 is arranged on the side of the lower case 21 opposite to the electric motor 70 in the left-right direction.

FIG. 9 shows a perspective view of the upper case 22, and FIG. 10 shows a front view of the upper case 22. As shown in FIG. The upper case 22 holds the lens 63 as shown in FIGS. The bottom surface of the upper case 22 is provided with projections 22a and 22b, which engage with the projections of the lower case to fix the upper case and the lower case.

A front view of the lens 63 is shown in FIG. 11, and a top view of the lens 63 is shown in FIG. The lens 63 has a first convex portion 63e and a second convex portion 63d on both side surfaces. Furthermore, as shown in FIG. 12, the lens 63 also has a third convex portion 63b and a fourth convex portion 63a on the LED side. The third convex portion 63b and the fourth convex portion 63a prevent the LED 61 from coming into contact with the lens 63, thereby preventing breakage of the LED and stably assembling while keeping the distance between the LED and the lens small.

Note that lens 63f is the green lens of 6101G, 63h is the central green lens of 6103G, and 63j is the green LED lens on the side of 6105G. A lens 63g is a 6102W white lens, and a lens 63i is a 6104w lens. Therefore, white light is emitted from the lenses 63g and 63i, and green light is emitted from the lenses 63f, 63h, and 63j.

The lens 63g, lens 63i, lens 63f, lens 63h, and lens 63j are formed in a conical shape so that the diameter increases from the light incident side (rear side) toward the light irradiation side (front side). . Further, the lens 63f, lens 63h, lens 63j, lens 63g and lens 63i have different lens diameters on the light irradiation side (front side). That is, the diameter D1 of the lens 63f, the lens 63h, and the lens 63j on the irradiation side (front side) is formed larger than the diameter D2 of the lens 63g and the lens 63i on the irradiation side (front side) (D1>D2).

For this reason, a lens that emits white light has a low refractive index and a high degree of condensing. On the other hand, since the lens for irradiating green light has a smaller radius of curvature than the lens for irradiating white light, the refractive index is higher, and the degree of light collection is lower. In other words, the lenses 63f, 63h, and 63j that emit green light have wider angles of view than the lenses 63g and 63i that emit white light.

In Example 1, lenses with different angles of view are used in combination, so that the green light absorbed by the surface to be cleaned is diffused and the white light is narrowed to brighten, thereby improving the visibility of dust. Furthermore, as described above, since the brightness of green in the center is increased, it becomes easier to mix with white, and color unevenness can be suppressed.

FIG. 13 is a perspective view of an LED holder. As shown in FIG. 13 , both left and right ends 64 b and 64 c of the flow path portion 64 are formed to extend downward along the mounting holes 21 a of the lower case 21 . FIG. 14 is a front view of the LED holder. FIG. 15 is a top view of the LED holder. 16 is a cross-sectional view taken along the line XII-XII of FIG. 14. FIG. In FIG. 16, a board holding portion 65b for holding the LED board 60 is formed. The substrate holding portion 65b is formed to have a concave shape in a cross-sectional view, and is formed to extend in the left-right direction (perpendicular to the drawing paper surface). Further, the width of the substrate holding portion 65b in the front-rear direction is such that the lower portion of the LED substrate 60 is fitted therein. Thereby, the LED substrate 60 can be stably held. Also, a restricting projection 65d is formed to restrict the movement of the LED substrate 60 in the left-right direction. Further, the ribs 65c of the LED holder are extended upward as structurally possible so that the LED substrate 60 is firmly fixed. The LED substrate is fixed by being sandwiched between the ribs 65c and 65e.

As shown in FIG. 17 , when the joint portion 30 is attached to the lower case 21 , the connection portion 32 c is connected to the flow path portion 64 . A gap S1 for taking in air is formed on the left side surface of the lower case 21 . When the electric blower of the vacuum cleaner main body 1 is driven and a suction force is generated, air flows from the brush chamber Q (see FIG. 4) through the joint portion 30 and at the same time outside air is taken in from the gap S1. After cooling the electric motor 70, the air taken in through the gap S1 is taken into the joint portion 30 through the through holes 32d to 32g.

FIG. 18 is a plan view showing the back side of the upper case. As shown in FIG. 18, the back surface of the upper case 22 is formed with a plurality of concave portions 22b serving as a plurality of recessed portions. By forming these concave portions 22b, the weight of the upper case 22 can be reduced, and the weight of the mouthpiece 400 can be reduced. The recesses 22b are formed in the shape of elongated holes having a predetermined width and are long in the front-rear direction, and are spaced apart in the left-right direction. As a result, the weight is reduced while ensuring the strength against the load from above, which tends to be applied to the upper case.

Further, screw bosses 22c, 22d, and 22e are formed on the back surface of the upper case 22. As shown in FIG.

FIG. 19 is a bottom view of the mouthpiece. As shown in FIG. 19, the mouthpiece 400 is screwed to the lower case 21 and the upper case 22 . The lower case 21 is formed with screw insertion holes (not shown) through which the screws 121a, 121b, and 121c are inserted. The screw insertion holes are formed at positions facing the screw bosses 22c, 22d and 22e in the vertical direction.

Screws 121a, 121b, and 121c are inserted through the respective screw insertion holes from the bottom side of the lower case 21 and screwed into the screw bosses 22c, 22d, and 22e of the upper case 22 to be fixed.

In addition, the lower case 21 is provided with a screw fixing portion by a screw 121 d for fixing the unit cover 24 to the lower case 21 .

FIG. 20 is a cross-sectional view taken along line XXXIX-XXXIX in FIG. 3, and as shown here, the suction body 400 has a lower case 21 and an upper case 22 that are fixed by claw engagement in addition to the screw fixing described above. Fixed. That is, the front edge of the upper case 22 is formed with a claw 22t forward, and the rear edge of the upper case 22 is formed with a claw 22u. The upper portion of the lower case 21 is formed with a recess 21t into which the claw 22t is fitted, and the rear portion of the lower case 21 is formed with a hole 21u into which the claw 22u is fitted.

1 vacuum cleaner main body 20 mouthpiece main body 21 lower case 22 upper case

Claims (5)

A vacuum cleaner comprising a fan motor that generates a suction force and a suction body that sucks up dust sucked by the fan motor,
The mouthpiece has a plurality of light sources,
A vacuum cleaner, wherein, among the plurality of light sources, the plurality of light sources having the same emission color, at least one of the light sources has a luminance different from that of other light sources of the same color. The vacuum cleaner according to claim 1,
the plurality of light sources having green and white light sources;
A vacuum cleaner, wherein a first green light source of the green light sources has higher brightness than other light sources. The vacuum cleaner according to claim 2,
The electric vacuum cleaner, wherein the first green light source is arranged so as to be positioned at the center of the plurality of light sources. The vacuum cleaner according to claim 3,
The electric vacuum cleaner, wherein the plurality of light sources are alternately arranged in green and white, and the first green light source is arranged in the center. The vacuum cleaner according to any one of claims 1 to 4,
A vacuum cleaner, wherein the light source is an LED.

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