Cleaner nozzle

Abstract

The present invention relates to a cleaner nozzle. More specifically, the cleaner nozzle includes: a nozzle housing having a suction port for sucking air containing dust; at least one agitator rotatably coupled to the nozzle housing; and a lighting module installed inside the nozzle housing to provide light to an object to be cleaned, wherein the lighting module is disposed closer to the front side than the agitator to improve dust visibility.

Description

vacuum cleaner nozzle

[0001] The present invention relates to a vacuum cleaner nozzle, and more specifically, to a vacuum cleaner nozzle capable of efficiently detecting a cleaning environment.

[0002] A vacuum cleaner refers to a device that uses suction power generated by a suction motor mounted inside the main body of the vacuum cleaner to suck in dust and air, and separates dust from the air to collect it.

[0003] The vacuum cleaner nozzle refers to the part that comes into contact with the floor and directly sucks in dust and air. The suction force generated by the suction motor mounted inside the vacuum cleaner body is transmitted to the nozzle, and this suction force draws dust and air into the nozzle.

[0004] The vacuum cleaner nozzle is equipped with an agitator and an agitator motor that drives it. The agitator rotates as the agitator motor drives it, scraping dust from the floor or carpet to improve cleaning performance.

[0005] Meanwhile, when the vacuum cleaner nozzle cleans a dark cleaning area or the cleaning environment is dark, the user cannot perceive dust in the floor or carpet, so a lighting module is provided to provide light to the floor or the object to be cleaned. The lighting module is installed in front of the vacuum cleaner nozzle and is configured to provide light toward the front.

[0006] However, as the lighting module radiates light forward, some of the light is directed toward the opposite side of the object to be cleaned, causing glare. Since only the remainder of the light is directed toward the actual object, the amount of light available to illuminate the object is reduced, resulting in a problem where the brightness of the object is lowered.

[0007] In addition, the lighting module consists of multiple light sources, and as these sources are spaced apart in the left-right direction, it appears as a point light where the areas where the light sources are located are exposed; this presented a problem of poor appearance quality in terms of design.

[0008] The present invention was created to improve upon the problems of conventional vacuum cleaner nozzles as described above, and aims to provide a vacuum cleaner nozzle that minimizes glare-inducing light to reduce light loss and ensure product reliability.

[0009] In addition, the purpose is to provide a vacuum cleaner nozzle that ensures dust visibility while providing light in the form of linear illumination, thereby allowing the user to visually check the cleaning status of the object to be cleaned, providing convenience to the user, and improving the appearance quality.

[0010] In addition, the purpose is to provide a vacuum cleaner nozzle that can be installed in a narrow space in front of the vacuum cleaner nozzle and has a simple structure and configuration.

[0011] The problems of the present invention are not limited to those mentioned above, and other unmentioned objectives will be clearly understood by those skilled in the art from the description below.

[0012] To achieve the above-mentioned purpose, a vacuum cleaner nozzle according to the present invention comprises: a nozzle housing having a suction port formed therein for sucking in air containing dust; at least one agitator rotatably coupled to the nozzle housing; and a lighting module installed inside the nozzle housing to provide light to a cleaning object; wherein the lighting module may be positioned in front of the agitator.

[0013] The lighting module above may be positioned below the rotation axis of the agitator.

[0014] It further includes an auxiliary wheel installed in the nozzle housing and positioned forward of the rotation axis of the agitator, and the lighting module may be positioned above the rotation axis of the auxiliary wheel.

[0015] The lighting module comprises: a light source unit that generates light; and a lens unit having an incident surface into which light generated from the light source unit is incident and an exit surface into which light is emitted; wherein the lens unit may be provided with a curved surface in which the exit surface gradually protrudes toward the center in the width direction.

[0016] The nozzle housing has a light-passing hole in which a window through which light from the lighting module passes is installed, and the lens portion may have its center positioned above the center of the light-passing hole.

[0017] The above lens portion may be positioned so that the optical axis slopes downward as it moves forward.

[0018] The light source unit comprises a substrate; and at least one light source provided on the substrate; and the substrate may be positioned vertically with respect to the object to be cleaned.

[0019] The lens portion may be provided with a curved surface in which the incident surface gradually protrudes toward the light source portion as it approaches the center in the width direction.

[0020] The lens portion may have a fixing portion into which the light source is inserted and fixed, wherein both sides of the incident surface protrude toward the light source to support both sides of the light source portion.

[0021] The light source unit comprises a substrate; and at least one light source installed on the substrate; and the light source unit is inserted into and fixed to the fixed part, and the light source may be spaced apart from the incident surface at a certain distance.

[0022] The nozzle housing has a light-passing hole in which a window through which light from the lighting module passes is installed, and the lighting module may further include a reflector arranged to reflect light emitted from the lens portion to the window.

[0023] The light source unit comprises a substrate arranged parallel to the object to be cleaned; and at least one light source installed on the substrate; and the reflector is arranged to move further away from the window as it extends upward, and its upper end may be positioned above the upper end of the window.

[0024] The lens portion above may be positioned above the light passage hole.

[0025] The nozzle housing has a light-passing hole in which a window through which light from the lighting module is transmitted is installed, and the lighting module may include: a light source part that generates light; and a reflector positioned below the light source part and positioned behind the window to reflect the light generated from the light source to the window.

[0026] The nozzle housing may be characterized by having a light-passing hole in which a window through which light from the lighting module passes is installed, wherein the height from the object to be cleaned to the center of the light-passing hole is 10.5 mm or more and 11.5 mm or less.

[0027] Meanwhile, the vacuum cleaner nozzle according to the present invention comprises: a nozzle housing having a suction port formed therein for sucking in air containing dust; and a lighting module installed inside the nozzle housing to provide light to an object to be cleaned; wherein the nozzle housing is provided with a light passage hole in which a window through which light from the lighting module is transmitted is installed, and the height from the object to be cleaned to the center of the light passage hole is 10.5 mm or more and 11.5 mm or less.

[0028] Additionally, the vacuum cleaner nozzle according to the present invention comprises: a nozzle housing having an intake port formed therein for sucking in air containing dust; and a lighting module installed inside the nozzle housing to provide light to a cleaning object; wherein the lighting module may include: a light source unit that generates light; a lens unit to which light generated from the light source unit is incident on one surface and emitted on the other surface; and a reflector arranged to reflect the light emitted from the lens unit.

[0029] Other specific details of the present invention are included in the detailed description and drawings.

[0030] According to the vacuum cleaner nozzle of the present invention as described above, one or more of the following effects are provided.

[0031] According to the present invention, by minimizing light that causes glare and reducing light loss, the brightness of the object to be cleaned is improved, and the reliability of the product can be ensured.

[0032] In addition, by ensuring dust visibility and providing light in the form of linear illumination, users can visually check the cleaning status of the object to be cleaned, providing convenience to the user and improving the appearance quality.

[0033] In addition, the simple structure and configuration allow it to be installed in the narrow space in front of the vacuum cleaner nozzle.

[0034] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0035] FIG. 1 is a perspective view for explaining a vacuum cleaner according to one embodiment of the present invention.

[0036] FIG. 2 is a perspective view illustrating a vacuum cleaner nozzle according to one embodiment of the present invention.

[0037] FIG. 3 is a side view illustrating a vacuum cleaner nozzle according to one embodiment of the present invention.

[0038] FIG. 4 is an enlarged cross-sectional view illustrating a lighting module of a vacuum cleaner nozzle according to one embodiment of the present invention.

[0039] FIG. 5 is an exploded perspective view of the light source part of a vacuum cleaner nozzle according to one embodiment of the present invention.

[0040] FIG. 6 is a perspective view of a cylindrical lens portion of a vacuum cleaner nozzle according to one embodiment of the present invention.

[0041] FIG. 7 is a perspective view of another type of lens portion of a vacuum cleaner nozzle according to one embodiment of the present invention.

[0042] FIG. 8 is a drawing for explaining a light path structure in which only a part of the lens portion is arranged at an angle in a lighting module of a vacuum cleaner nozzle according to one embodiment of the present invention.

[0043] FIG. 9 is a drawing for explaining a light path structure in which a lighting module of a vacuum cleaner nozzle according to one embodiment of the present invention is arranged at an angle.

[0044] FIG. 10 is a cross-sectional view of a vacuum cleaner nozzle according to another embodiment of the present invention.

[0045] FIG. 11 is an enlarged cross-sectional view illustrating a lighting module of a vacuum cleaner nozzle according to another embodiment of the present invention.

[0046] FIG. 12 is a diagram illustrating the light path of a lighting module of a vacuum cleaner nozzle according to another embodiment of the present invention.

[0047] FIG. 13 is an enlarged cross-sectional view illustrating a lighting module of a vacuum cleaner nozzle according to another embodiment of the present invention.

[0048] FIG. 14 is a diagram illustrating the light path of a lighting module of a vacuum cleaner nozzle according to another embodiment of the present invention.

[0049] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0050] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be interpreted to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0051] Hereinafter, the present invention will be described with reference to the drawings for explaining a vacuum cleaner nozzle according to embodiments of the present invention.

[0052] FIG. 1 illustrates a perspective view of a vacuum cleaner according to an embodiment of the present invention; FIG. 2 illustrates a perspective view of a vacuum cleaner nozzle according to an embodiment of the present invention; FIG. 3 illustrates a side view of a vacuum cleaner nozzle according to an embodiment of the present invention; FIG. 4 illustrates an enlarged cross-sectional view for explaining a lighting module of a vacuum cleaner nozzle according to an embodiment of the present invention; FIG. 5 illustrates an exploded perspective view of a light source part of a vacuum cleaner nozzle according to an embodiment of the present invention; FIG. 6 illustrates a perspective view of a cylindrical lens part of a vacuum cleaner nozzle according to an embodiment of the present invention; FIG. 7 illustrates a perspective view of a lens part of a vacuum cleaner nozzle of a different form according to an embodiment of the present invention; FIG. 8 illustrates a diagram for explaining a light path structure in which only a part of the lens part is arranged at an angle in the lighting module of a vacuum cleaner nozzle according to an embodiment of the present invention; FIG. 9 illustrates a diagram for explaining a light path structure in which the lighting module of a vacuum cleaner nozzle according to an embodiment of the present invention is arranged at an angle; FIG. 10 illustrates a cross-sectional view of a vacuum cleaner nozzle according to another embodiment of the present invention. FIG. 11 shows an enlarged cross-sectional view for explaining a lighting module of a vacuum cleaner nozzle according to another embodiment of the present invention, FIG. 12 shows a diagram for explaining a light path of a lighting module of a vacuum cleaner nozzle according to another embodiment of the present invention, FIG. 13 shows an enlarged cross-sectional view for explaining a lighting module of a vacuum cleaner nozzle according to yet another embodiment of the present invention, and FIG. 14 shows a diagram for explaining a light path of a lighting module of a vacuum cleaner nozzle according to yet another embodiment of the present invention.

[0053] Referring to FIGS. 1 to 3, the vacuum cleaner nozzle (1) of the present invention is described as follows.

[0054] The vacuum cleaner nozzle (1) according to an embodiment of the present invention can be connected to and used with, for example, a handheld vacuum cleaner or a canister-type vacuum cleaner.

[0055] That is, the vacuum cleaner nozzle (1) can be detachably connected to the vacuum cleaner body (not shown) or the extension tube (3). The vacuum cleaner nozzle (1) is connected to the vacuum cleaner body or the extension tube (3), allowing the user to clean the object to be cleaned (40, floor surface) using the vacuum cleaner nozzle (1). At this time, the vacuum cleaner body to which the vacuum cleaner nozzle (1) is connected can separate dust from the air using a multi-cyclone method.

[0056] The vacuum cleaner nozzle (1) can be operated by receiving power from the vacuum cleaner body. Specifically, the vacuum cleaner nozzle (1) can be operated by receiving power from a battery (not shown) provided in the vacuum cleaner body.

[0057] The vacuum cleaner body includes a suction motor (not shown), and the suction force generated by the suction motor can be applied to the vacuum cleaner nozzle (1).

[0058] Accordingly, in this embodiment, the vacuum cleaner nozzle (1) can perform the role of sucking in foreign matter and air from the object to be cleaned (40, floor surface) and guiding it to the main body of the vacuum cleaner.

[0059] A vacuum cleaner nozzle (1) according to an embodiment of the present invention may be configured to include a nozzle housing (100), a driving unit (not shown), at least one agitator (10), and a lighting module (200).

[0060] For reference, the direction used in the present invention is explained as follows.

[0061] In the present invention, based on the state in which the vacuum cleaner nozzle (1) is placed on the object to be cleaned (40), the direction away from the object to be cleaned (40) can be called the upward direction (upper side), and the direction approaching the object to be cleaned (40) can be called the downward direction (lower side). Additionally, based on the agitator (10), the direction in which the extension tube (3) is positioned can be called the rear of the vacuum cleaner nozzle (1), and the opposite direction can be called the front of the vacuum cleaner nozzle (1).

[0062] The nozzle housing (100) may be configured to include, for example, a housing body (110) and a side cover (120). The housing body (110) has an internal space that is open on both sides, and side covers (120) may be attached to both sides to cover the openings on both sides. Additionally, an auxiliary suction port (121) consisting of a plurality of holes may be formed in the side cover (120). This housing body (110) may be composed of an upper housing and a lower housing.

[0063] This nozzle housing (100) can form the shape of a vacuum cleaner nozzle (1) and can be coupled with an extension tube (3). A driving unit and an agitator (10) can be placed inside this nozzle housing (100).

[0064] A suction port (111) may be formed in the nozzle housing (100). Specifically, a suction port (111) may be formed on the lower side of the housing body (110). The suction port (111) refers to a space into which air containing dust can be introduced. With this configuration, when the suction motor of the vacuum cleaner body is operated, dust and air present around the floor surface can be sucked into the flow path of the vacuum cleaner nozzle (1) through the suction port (111).

[0065] Inside the nozzle housing (100), a printed circuit board (not shown) for controlling a driving unit that drives the agitator (10) may be installed.

[0066] Additionally, a passage may be formed in the nozzle housing (100) that communicates with the suction port (111) and directs air flowing in from the suction port (111) to the main body of the vacuum cleaner.

[0067] The flow path can be placed inside the nozzle housing (100), the lower end of the flow path is in communication with the suction port (111), and the upper end of the flow path can be connected to the extension tube (3).

[0068] At this time, the flow path connecting the intake port (111) and the extension pipe (3) can be formed along the approximately vertical direction. With this configuration, the path through which air containing dust is sucked in can be minimized, and the loss of flow rate can be minimized.

[0069] Additionally, the nozzle housing (100) may be rotatably coupled with at least one wheel (30) that can roll along the bottom surface (ground) at the rear.

[0070] Such wheels (30) are provided so that when the vacuum cleaner nozzle (1) is placed on the floor surface, the wheels (30) can come into contact with the floor surface. Therefore, when the vacuum cleaner nozzle (1) is moved by the user's operation, friction between the nozzle housing (100) and the floor surface can be reduced and the mobility of the vacuum cleaner nozzle (1) can be improved.

[0071] Additionally, the vacuum cleaner nozzle (1) may further be provided with at least one auxiliary wheel (20) capable of rolling along the object to be cleaned (40). The auxiliary wheel (30) may be rotatably coupled to the nozzle housing (100). When the vacuum cleaner nozzle (1) is placed over the object to be cleaned (40), the auxiliary wheel (20) may come into contact with the object to be cleaned (40) together with the wheel (30).

[0072] Here, the wheel (30) may be positioned at the rear of the nozzle housing (100). Specifically, the wheel (30) may be positioned at the rear of the agitator (10), and its axis of rotation may be positioned at the rear of the axis of rotation of the agitator (10). Additionally, the auxiliary wheel (20) may be positioned at the front of the nozzle housing (100). Specifically, the auxiliary wheel (20) may be positioned at the front of the agitator (10), and its axis of rotation may be positioned at the front of the axis of rotation of the agitator (10).

[0073] At least one agitator (10) is installed in the nozzle housing (100) and serves to separate foreign matter from the object to be cleaned (40). The agitator (10) can be positioned in front of the cleaner nozzle (1) and can be rotatably coupled to the nozzle housing (100).

[0074] The agitator (10) is formed in a cylindrical shape and can be positioned along the left-right direction of the nozzle housing (100). That is, the longitudinal direction (axial direction) of the agitator (10) can be positioned in a direction that intersects the front-rear direction of the vacuum cleaner nozzle (1).

[0075] The outer surface of the agitator (10) may be provided with a brush or a member capable of increasing friction.

[0076] The agitator (10) is equipped with at least one gear to receive rotational power from the drive unit.

[0077] The agitator (10) can guide external dust and air to the suction port (111) by rotation. The agitator (10) can be rotated so that the outer surface facing the floor moves toward the suction port (111). In other words, the agitator (10) can be rotated counterclockwise relative to the view of the vacuum cleaner nozzle (1) from the left side of the vacuum cleaner nozzle (1). With this configuration, external dust and air can be guided toward the suction port (111) while rubbing against the agitator (10).

[0078] Meanwhile, the agitator (10) can be replaced and coupled to the nozzle housing (100). Thus, the agitator (10) can be replaced and cleaned according to the cleaning environment.

[0079] The drive unit may be configured to include a reduction gear. The reduction gear includes at least one gear and is gear-coupled between the drive unit and the agitator (10) to transmit rotational power, and can reduce the rotational speed of the agitator (10) through the gear ratio. Through this, precise rotation of the agitator (10) can be controlled, and a relatively large force can be provided to the agitator (10).

[0080] Meanwhile, the vacuum cleaner nozzle (1) includes a lighting module (200) to provide light when cleaning a dark space or when the cleaning environment is dark.

[0081] Referring to FIGS. 3 and 4, a lighting module (200) is installed on one side of the nozzle housing (100) to provide light to the object to be cleaned (40). This lighting module (200) is installed in front of the agitator (10) and emits light toward the front and toward the object to be cleaned (40).

[0082] The lighting module (200) is positioned at the very front of the nozzle housing (100) but is positioned at the lower side of the nozzle housing (100) so as to be positioned close to the object to be cleaned (40), and is positioned within a narrow space due to the auxiliary wheel (20) positioned at the front lower side of the nozzle housing (100).

[0083] In particular, the lighting module (200) is positioned as close as possible to the object to be cleaned (40) because the closer it is to the object to be cleaned, the larger the shadow of foreign substances such as dust becomes and the greater the visibility. For example, the lighting module (200) may be positioned below the rotation axis of the agitator (10). Additionally, the lighting module (200) may be positioned in front of the rotation axis of the auxiliary wheel (20) but above the rotation axis of the auxiliary wheel (20). The lighting module (200) may be installed in a space provided above the front of the auxiliary wheel (20) and positioned close to the object to be cleaned (40).

[0084] The nozzle housing (100) is provided with a lighting module receiving portion (130) on the upper front side of the part where the auxiliary wheel (20) is installed. The lighting module receiving portion (130) is provided with a protruding lower part of the portion surrounding the agitator (10) of the nozzle housing (100), and a part of the auxiliary wheel (20) can be stored on one side of the lighting module receiving portion (130).

[0085] The lighting module receiving portion (130) may be provided with a light passage hole (131) formed by penetrating one side and the other side at the very front. The lighting module receiving portion (130) encloses the lighting module (200) with the lighting module (200) installed inside, and is provided with a light passage hole (131) to allow light generated from the lighting module (200) to pass through.

[0086] The light passage hole (131) is formed along the left and right directions of the nozzle housing (100), and a window (132) may be installed to prevent foreign substances such as dust from penetrating into the interior of the lighting module receiving portion (130). The window (132) may be formed of a transparent material or provided by being coated with a black tint that transmits light.

[0087] Light passing through the light passage hole (131) may slope downward as it moves forward or may proceed forward.

[0088] In addition, the light module receiving portion (130) has a light passage hole (131) located within a certain height (h) from the object to be cleaned (40). For example, the height (h) from the object to be cleaned (40) to the center of the light passage hole (131) may be 10.5 mm or more and 11.5 mm or less. If the height (h) from the object to be cleaned (40) to the center of the light passage hole (131) is less than 10.5 mm, the space for installing the light module (200) cannot be secured, and if the height (h) from the object to be cleaned (40) to the center of the light passage hole (131) is higher than 11.5 mm, dust visibility is reduced, so the light passage hole (131) may be positioned so that its center is located between 10.5 mm and 11.5 mm. At this time, the vertical spacing of the light passage hole (131) may be 5 mm. Here, when a virtual horizontal line passing through the center of the upper and lower directions of the light passage hole (131) is called the center line (a1) of the light passage hole (131), the light passage hole (131) can be arranged in the lighting module receiving portion (130) such that the straight distance between the object to be cleaned (40) and the center line (a1) of the light passage hole (131) is 10.5 mm or more and 11.5 mm or less.

[0089] Below, an embodiment of a lighting module (200) will be described in detail with reference to FIGS. 4 to 9.

[0090] The lighting module (200) may include a light source part (210) and a lens part (220).

[0091] The light source unit (210) is positioned inside the lighting module receiving unit (130) to generate light, and the generated light may be arranged to face forward. This light source unit (210) may be composed of a substrate (211) and at least one light source (212) provided on the substrate (211).

[0092] The substrate (211) is positioned vertically with respect to the object to be cleaned (40) and can be positioned along the left and right directions.

[0093] At least one light source (212) may be provided on the substrate (211), and if multiple are provided, they may be spaced apart along the left and right directions and spaced apart at a certain distance so that the lighting module (200) can provide linear lighting. For example, the light sources (212) may be spaced apart at intervals of 10 mm or more and 12 mm or less.

[0094] And, the light source unit (210) can be provided as a PCBA in which a light source (212) is installed on a substrate (211) for compaction.

[0095] The lens portion (220) is positioned between the light source portion (210) and the window (132), and light generated from the light source portion (210) is incident on it and emits light toward the window (132). The lens portion (220) may be provided with an incident surface (225) positioned to face the light source portion (210) where light generated from the light source portion (210) is incident, and an emission surface (226) positioned to face the window (132) where light is emitted.

[0096] The lens portion (220) is designed to have a shape that implements a narrow beam angle for the emitted light, and can be formed so that the light generated from the light source portion (210) is emitted in parallel. For example, the incident surface (225) of the lens portion (220) can be provided as a curved surface that gradually protrudes toward the center in the width direction, and the exit surface (226) of the lens portion (220) can be provided as a curved surface that gradually protrudes toward the center in the width direction. In addition, the amount of protrusion of the exit surface (226) can be formed to be greater than the amount of protrusion of the incident surface (225).

[0097] The lens portion (220) may be configured to include a lens body (221), a protrusion (222), and a fixing portion (223), and may be installed by being seated on the inner lower surface of the lighting module receiving portion (130). The lens body (221) may be provided in the form of a long block in the left-right direction. The protrusion (222) is provided such that one side of the lens body (221) is formed to protrude forward, and the convex side protruding forward may become the emission surface. Additionally, the other side of the lens body (221) may be formed to protrude backward, and the convex side facing backward may become the incident surface.

[0098] The lens portion (220) is provided with a fixed portion (223) in which a light source portion (210) is installed for compaction, and as the light source portion (210) is inserted and fixed in the fixed portion (223), a separate structure or part for fixing the light source portion (210) becomes unnecessary, and the lighting module (200) itself can be compacted.

[0099] The fixing part (223) is formed such that both sides of the lens body (221) protrude backward, and a light source part (210) can be inserted and fixed between them. Additionally, the fixing part (223) may be provided such that both sides of the incident surface (225) of one side of the lens body (221) protrude toward the light source part (210). Referring to FIG. 5, the fixing part (223) is formed such that the upper end and the lower end extend backward, and a substrate (211) is inserted and fixed between them. Additionally, the fixing part (223) may support both sides of the light source part (210) by providing an insertion part (224) at the end where the substrate (211) is inserted and seated. The insertion part (224) is provided on each of the pair of fixing parts (223) and is formed with a step difference on the facing surfaces of the pair of fixing parts (223), and is positioned at the end of the fixing part (223). Accordingly, the substrate (211) is inserted into the insertion portion (224) and is supported and fixed on the stepped surface between the fixing portion (223) and the insertion portion (224). This fixing portion (223) may be formed along the longitudinal direction of the lens body (221) or may be provided by being formed at multiple locations on the lens body (221).

[0100] Additionally, since the fixed part (223) is provided with an insertion part (224), the light source (212) can be spaced apart from the incident surface (225) at a certain distance (g), and the reliability of the product can be ensured by maintaining the certain distance (g) at a constant level. At this time, the certain distance (g) may be 0.5 mm or less, but is not limited thereto.

[0101] Additionally, the lens portion (220) may be provided with a protrusion (222) as a first convex portion (222a) in the shape of a cylinder as shown in FIG. 6, or as a second convex portion (222b) in which a convex shape is repeatedly arranged along the length direction as shown in FIG. 7.

[0102] Referring to FIG. 6, the protrusion (222) may be a first convex portion (222a). The first convex portion (222a) may be formed with an elliptical cross-section and the major axis of the ellipse may be positioned in the front-rear direction, and may be formed extending along the length direction of the lens body (221). The protrusion (222) may be a first convex portion (222a) in the shape of a cylinder lens.

[0103] Additionally, referring to FIG. 7, the protrusion (222) may be a second convex portion (222b). The second convex portion (222b) may also have an elliptical cross-section formed such that the major axis of the ellipse is positioned in the front-rear direction, and may be formed such that the cross-sectional area decreases or increases along the length direction of the lens body (221). The protrusion (222) may be a second convex portion (222b) in the shape of a peanut lens.

[0104] Additionally, the lighting module (200) is configured such that the light emitted from the lens portion (220) is close to parallel light, and the light passing through the window (132) proceeds in a downward sloping direction as it moves forward. That is, the lens portion (220) is positioned so that the optical axis (a2) is inclined with respect to the center line (a1) of the light passage hole (131), and the light emitted from the lens portion (220) is emitted parallel to the optical axis (a2) and can pass through the window (132).

[0105] To this end, the lighting module (200) may be positioned such that the protrusion (222) protrudes downwardly from the lens body (221) as in FIG. 8, or the lens part (230) itself is positioned downwardly.

[0106] Referring to FIG. 8, the lighting module (200) may be positioned such that the substrate (211) is positioned perpendicularly to the object to be cleaned (40) and the lens body (221) is positioned upright relative to the object to be cleaned (40). The substrate (211) and the lens body (221) may be positioned parallel to each other. However, the incident surface (225) of the lens portion (220) may be provided to protrude backward in an upwardly inclined direction, and the exit surface (226) may be provided to protrude forward in a downwardly inclined direction. That is, the optical axis (a2) may be positioned at an angle with respect to the centerline (a3) ​​of the lens body (221).

[0107] At this time, the center line (a1) of the light passage hole (131) and the center line (a3) ​​of the lens body (221) may be arranged parallel to each other, and the center line (a3) ​​of the lens body (221) may be arranged so as to be spaced upward from the center line (a1) of the light passage hole (131). Accordingly, light emitted from the lens part (220) in a downwardly inclined direction may pass through the light passage hole (131) and be provided to the object to be cleaned (40). In addition, the optical axis (a2) may be arranged to pass through the center of the light passage hole (131) in the vertical direction. With this structure arranged, referring to FIG. 8, it can be seen that the first light ray (L1), which represents the light ray emitted from the lens part (220), proceeds parallel to the optical axis (a2) but proceeds in a downwardly inclined manner as it moves forward. In addition, as light passes through the lens portion (220), it can be confirmed that it passes within the gap of the light passage hole (131) with a narrow beam angle.

[0108] Additionally, the height from the object to be cleaned (40) to the center of the lens body (221) in the vertical direction can be positioned higher than the height from the object to be cleaned (40) to the center of the light passage hole (131) in the vertical direction.

[0109] Additionally, referring to FIG. 9, the lighting module (200) may have the lens portion (230) itself positioned at an angle with respect to the object to be cleaned (40). That is, the center line (a3) ​​of the lens body (231) of the lens portion (230) may be positioned at an angle with respect to the center line (a1) of the light passage hole (131), and the optical axis (a2) of the lens portion (230) may be positioned at an angle with respect to the center line (a1) of the light passage hole (131). Furthermore, the center line (a3) ​​of the lens body (231) and the optical axis (a2) of the lens portion (230) may be positioned to coincide. Here, the center line (a3) ​​of the lens body (231) may refer to a line connecting the center of the lens body (231) in the width direction along the front-rear direction.

[0110] Additionally, the lens portion (230) may be formed such that the protrusion (232) protrudes along the centerline (a3) ​​of the lens body (231) and is symmetrically formed with respect to the centerline (a3) ​​of the lens body (231). Furthermore, the fixing portion (233) and the insertion portion (234) may also be formed symmetrically with respect to the optical axis (a2) of the lens portion (230). According to this shape, the most convex point of the incident surface (235) and the most convex point of the exit surface (236) of the lens portion (230) may be positioned on the centerline (a3) ​​of the lens body (231). Additionally, the optical axis (a2) may be positioned to pass through the center of the upper and lower direction of the light passage hole (131).

[0111] With this structure arranged, referring to FIG. 9, it can be seen that the first light ray (L1), representing the light ray emitted from the lens unit (230), travels parallel to the optical axis (a2) but slopes downward as it moves forward. Additionally, as the light passes through the lens unit (230), it can be seen that it passes within the gap of the light passage hole (131) with a narrow beam angle.

[0112] Meanwhile, another embodiment of the lighting module (1200) will be described in detail with reference to FIGS. 10 to 12.

[0113] The lighting module (1200) may include a light source part (1210), a lens part (1220), and a reflector (1230).

[0114] The light source unit (1210) is composed of a substrate (1211) and at least one light source (1212) provided on the substrate (1211), and is fixedly installed on the fixed part (1223) of the lens unit (1220). The light source unit (1210) is positioned above the window (132) installed in the light passage hole (131). Additionally, the light source unit (1210) is positioned above the centerline (a1) of the light passage hole (131) to provide light toward the object to be cleaned (40).

[0115] The substrate (1211) is positioned along the horizontal and facing the object to be cleaned (40), and is positioned lengthwise along the left and right directions. At least one light source (1212) is installed on the surface of the substrate (1211) facing the object to be cleaned (40).

[0116] The lens portion (1220) is positioned between the light source portion (1210) and the reflector (1230) to be described later, so that light generated from the light source portion (1210) is incident on it and light is emitted through the reflector (1230). The lens portion (1220) is positioned above the window (132) and can be positioned above the center line (a1) of the light passage hole (131).

[0117] The lens portion (1220) is configured to include a lens body (1221), a protrusion (1222), and a fixing portion (1223). The lens body (1221) is formed in a block shape and arranged along the left and right directions, and a fixing portion (1223) is provided on the upper side facing the light source portion (1210), and a protrusion (1222) may be provided on the lower side opposite thereto.

[0118] The lens portion (1220) is provided with a pair of fixing portions (1223) that support both sides of the light source portion (1210) by having the front and rear ends of the lens body (1221) protrude toward the light source portion (1210). The pair of fixing portions (1223) are provided with an insertion portion (1224) into which the light source portion (1210) is inserted and fixed at the end, thereby fixing the light source portion (1210). Accordingly, the light source portion (1210) can be positioned such that the light source (1212) is spaced apart from the incident surface (1225) of the lens portion (1220) by a certain distance (g), and the lens portion (1220) and the light source portion (1210) are provided in a combined form, so that the lighting module (1200) itself becomes compact.

[0119] The protrusion (1222) is formed so that the lower surface of the lens body (1221) protrudes downward, and the convex surface that protrudes forward can become the emission surface.

[0120] This lens portion (1220) may be provided with an incident surface (1225) positioned to face the light source portion (1210) and to receive light generated from the light source portion (1210), and an exit surface (1226) positioned to face the window (132) and to receive light.

[0121] The lens portion (1220) is designed to have a shape that implements a narrow beam angle for the emitted light, and can be formed so that the light generated from the light source portion (1210) is emitted in parallel. For example, the incident surface (1225) of the lens portion (1220) can be provided as a curved surface that gradually protrudes toward the center in the width direction, and the exit surface (1226) of the lens portion (1220) can be provided as a curved surface that gradually protrudes toward the center in the width direction. In addition, the amount of protrusion of the exit surface (1226) can be formed to be greater than the amount of protrusion of the incident surface (1225).

[0122] The reflector (1230) is positioned below the light source (1210) and the lens unit (1220) and behind the window (132) to reflect light emitted from the lens unit (1220) to the window (132). The reflector (1230) is positioned so as to move further away from the window (132) as it moves upward, and its upper end may be positioned above the upper end of the window (132).

[0123] Specifically, the lighting module receiving portion (130) is provided with a horizontal partition (133) that is formed with a portion protruding from the rear surface, and the upper end of the reflector (1230) can be supported and fixed to the horizontal partition (133). In addition, the lower end of the reflector (1230) can be supported and fixed to the inner lower surface of the lighting module receiving portion (130). The reflector (1230) can be positioned obliquely inside the lighting module receiving portion (130).

[0124] The reflector (1230) has a curved reflective surface that reflects light emitted from the lens unit (1220) toward the window (132), and has asymmetric light distribution with respect to a virtual reference plane that is positioned at an angle to the object to be cleaned (40). Referring to FIG. 12, it can be seen that the second light ray (L2), representing the light rays of light emitted from the lens unit (1220), travels parallel to the optical axis (a2) and travels vertically downward. The second light ray (L2) travels toward the reflector (1230), and the third light ray (L3), representing the light rays of light reflected from the reflector (1230), can be seen that a part of it travels in a downwardly inclined direction as it moves forward, while another part travels along the horizontal. Specifically, it can be observed that the rear side of the second light ray (L2) is reflected by the reflector (1230) and the third light ray (L3) proceeds in a downwardly inclined direction, and the front side of the second light ray (L2) is reflected by the reflector (1230) and the third light ray (L3) proceeds along the horizontal. As such, the light distribution according to the third light ray (L3) has an asymmetric light distribution, which can minimize light directed toward the upper front side and prevent glare.

[0125] In particular, since the reflector (1230) is positioned obliquely in the upper space of the auxiliary wheel (20), the space utilization of the lighting module receiving part (130) is high, and the space for installing the lens part (1220) and the light source part (1210) can be secured.

[0126] Meanwhile, another embodiment of the lighting module (2200) will be described in detail with reference to FIGS. 13 and 14.

[0127] The lighting module (2200) may be composed of a light source (2210) and a reflector (2230).

[0128] The light source unit (2210) is composed of a substrate (2211) and at least one light source (2212) provided on the substrate (2211), and is fixedly installed on one side of the lighting module receiving unit (130). The light source unit (2210) is positioned above the window (132) installed in the light passage hole (131). Additionally, the light source unit (2210) is positioned above the centerline (a1) of the light passage hole (131) to provide light toward the object to be cleaned (40).

[0129] The substrate (2211) is positioned along the horizontal line and facing the object to be cleaned (40), but is positioned lengthwise along the left-right direction. At least one light source (2212) is installed on the surface of the substrate (2211) facing the object to be cleaned (40).

[0130] The reflector (2230) is positioned below the light source (2210) and behind the window (132) to reflect light generated from the light source (2210) to the window (132). The reflector (2230) may be positioned so as to move further away from the window (132) as it moves upward. This reflector (2230) may be positioned obliquely inside the lighting module housing (130).

[0131] The reflector (2230) may be formed to have a parabolic shape or an elliptical shape that reflects light generated from the light source (2210) and causes the reflected light to become parallel light inclined toward the object to be cleaned (40). The light reflected by this reflector (2230) is parallel light and travels in an inclined direction toward the object to be cleaned (40).

[0132] Referring to FIG. 14, it can be seen that the fourth light ray (L4), which represents the light ray of light reflected from the reflector (2230), is parallel light and travels in an inclined direction relative to the object to be cleaned (40).

[0133] With this configuration, the structure of the lighting module (2200) is simplified and can be installed within the narrow space of the nozzle housing (100) without interfering with the auxiliary wheel (20).

[0134] Accordingly, the appearance quality can be improved in terms of design, and the uniformity of the light-emitting surface can be ensured.

[0135] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention and is not limited thereto. It is evident that modifications or improvements to the present invention are possible by those skilled in the art within the technical scope of the invention.

[0136] All simple variations or modifications of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

Claims

1. A nozzle housing having an intake port formed therein for sucking in air containing dust; At least one agitator rotatably coupled to the nozzle housing; and A lighting module installed inside the nozzle housing to provide light to the object to be cleaned; is included, The above lighting module is, A vacuum cleaner nozzle characterized by being positioned in front of the agitator.

2. In Paragraph 1, The above lighting module is, A vacuum cleaner nozzle characterized by being positioned below the rotation axis of the agitator.

3. In Paragraph 2, It further includes an auxiliary wheel installed in the nozzle housing, positioned further forward than the rotation axis of the agitator. The above lighting module is, A vacuum cleaner nozzle characterized by being positioned above the rotation axis of the auxiliary wheel.

4. In Paragraph 1, The above lighting module is, A light source unit that generates light; and A lens unit having an incident surface into which light generated from the light source unit is incident and an exit surface into which light is emitted; comprising The above lens part is, A vacuum cleaner nozzle characterized by the above-mentioned discharge surface being provided as a curved surface that gradually protrudes toward the center in the width direction.

5. In Paragraph 4, The above nozzle housing is, It is provided with a light-passing hole in which a window through which light from the above lighting module is transmitted is installed, and The above lens part is, A vacuum cleaner nozzle characterized by having its center positioned above the center of the light-passing hole.

6. In Paragraph 4, The above lens part is, A vacuum cleaner nozzle characterized by the optical axis being positioned to slope downward as it moves forward.

7. In Paragraph 4, The above light source unit is, Substrate; and at least one light source provided on the substrate; comprising A vacuum cleaner nozzle characterized by the above substrate being positioned vertically with respect to the object to be cleaned.

8. In Paragraph 4, The above lens part is, A vacuum cleaner nozzle characterized by the above-mentioned incident surface being provided as a curved surface that gradually protrudes toward the light source side as it approaches the center in the width direction.

9. In Paragraph 4, The above lens part is, A vacuum cleaner nozzle characterized by having a fixing part into which the light source is inserted and fixed, wherein both sides of the incident surface protrude toward the light source side to support both sides of the light source.

10. In Paragraph 9, The above light source unit is, Substrate; and at least one light source installed on the above substrate; comprising, The above light source unit is, A vacuum cleaner nozzle characterized by being inserted into and fixed to the above-mentioned fixed part, and having the light source spaced apart from the incident surface at a certain distance.

11. In Paragraph 4, The above nozzle housing is, It is provided with a light-passing hole in which a window through which light from the above lighting module is transmitted is installed, and The above lighting module is, A vacuum cleaner nozzle further comprising a reflector positioned to reflect light emitted from the lens portion to the window.

12. In Paragraph 11, The above light source unit is, A substrate positioned parallel to the object to be cleaned; and at least one light source installed on the above substrate; comprising, The above reflector is, A vacuum cleaner nozzle characterized by being positioned so as to move further away from the window as it extends upward, with the upper end positioned above the upper end of the window.

13. In Paragraph 11, The above lens part is, A vacuum cleaner nozzle characterized by being positioned above the light passage hole.

14. In Paragraph 1, The above nozzle housing is, It is provided with a light-passing hole in which a window through which light from the above lighting module is transmitted is installed, and The above lighting module is, A light source unit that generates light; and A vacuum cleaner nozzle characterized by including a reflector positioned below the light source and positioned behind the window to reflect light generated from the light source to the window.

15. In Paragraph 1, The above nozzle housing is, A light-passing hole is provided in which a window through which light from the above lighting module is transmitted is installed, A cleaning nozzle characterized by the height from the object to be cleaned to the center of the light passage hole being 10.5 mm or more and 11.5 mm or less.

16. A nozzle housing having an intake port formed therein for sucking in air containing dust; and A lighting module installed inside the nozzle housing to provide light to the object to be cleaned; is included, The above nozzle housing is, A light-passing hole is provided in which a window through which light from the above lighting module is transmitted is installed, A cleaning nozzle characterized by the height from the object to be cleaned to the center of the light passage hole being 10.5 mm or more and 11.5 mm or less.

17. A nozzle housing having an intake port formed therein for sucking in air containing dust; and A lighting module installed inside the nozzle housing to provide light to the object to be cleaned; is included, The above lighting module is, A light source unit that generates light; A lens unit in which light generated from the above light source unit is incident on one surface and emitted on the other surface; and A vacuum cleaner nozzle characterized by including a reflector positioned to reflect light emitted from the lens portion.

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