Nozzle for cleaner

Abstract

The present invention relates to a vacuum cleaner nozzle, and more specifically, comprises: 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 device installed inside the nozzle housing to provide light to a cleaning object; wherein the lighting device comprises: a substrate disposed inside the nozzle housing; at least one light source installed on the substrate; and a light guide portion in which light generated from the light source is incident on one side and emitted on the other side to provide light to the cleaning object, thereby improving the appearance quality.

Description

Technology Field

[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. Background Technology

[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 device is provided to provide light to the floor or the object to be cleaned. The lighting device is installed in front of the vacuum cleaner nozzle and is configured to provide light toward the front.

[0006] However, as the lighting device irradiates light forward, some of the light is directed toward the opposite side of the object to be cleaned, causing glare, and 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 device 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. The problem to be solved

[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 can alleviate glare by minimizing light directed toward the opposite side of the object to be cleaned and ensure product reliability.

[0009] In addition, the purpose is to provide a vacuum cleaner nozzle that improves the brightness of the cleaning surface without increasing the number of light sources by minimizing light loss, enhances user visibility of foreign substances by expanding the light-providing area, and offers convenience to the user.

[0010] In addition, the purpose is to provide a vacuum cleaner nozzle that can improve the appearance quality in terms of design by providing light in the form of linear lighting.

[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. means of solving the problem

[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 device installed inside the nozzle housing to provide light to a cleaning object; wherein the lighting device may comprise: a substrate disposed inside the nozzle housing; at least one light source installed on the substrate; and a light guide portion in which light generated from the light source is incident on one surface and emitted on the other surface to provide light to the cleaning object.

[0013] The light guide portion can be positioned above the agitator.

[0014] The above substrate may be positioned behind the rotation axis of the agitator.

[0015] The above substrate can be positioned perpendicular to the object to be cleaned.

[0016] The light guide section above may be provided in a curved shape in the front-rear direction so that the light emitted from the other side has asymmetric light distribution with respect to a virtual reference plane parallel to the object to be cleaned.

[0017] The light guide portion described above may be provided with a convex portion having one side protruding toward the opposite side of the object to be cleaned, and may be arranged to be inclined downward as it extends toward the emission surface from which light is emitted from the convex portion.

[0018] The light guide section comprises: an incident surface into which light is incident and which is positioned along the axial direction of the agitator; and an exit surface into which light is emitted and which is positioned along the axial direction of the agitator and which is positioned further forward than the incident surface. The exit surface may be provided such that the length of the axial direction of the agitator is longer than the length of the axial direction of the agitator of the incident surface.

[0019] The light guide section may further include a pair of inclined sections connecting both sides of the incident surface and the exit surface.

[0020] The above light guide may be formed such that the thickness of one end where light is incident is thicker than the thickness of the other end where light is emitted.

[0021] The above light guide portion may be formed such that its thickness decreases as it goes from one end where light is incident to the other end where light is emitted.

[0022] The light guide section above may be positioned so that the light emission surface emits light toward the object to be cleaned, with the light emission surface inclined downward.

[0023] The above light guide may have an incident surface into which light is incident spaced forward from the light source.

[0024] The light guide portion may have at least one concave portion positioned to face the light source on the incident surface where light is incident.

[0025] The above-mentioned concave portion may be formed to gradually sink toward the center.

[0026] The nozzle housing may be provided with a front support member positioned in front of the light guide member and having a light passage hole formed therein, and a film member attached to the front support member to cover the light passage hole and transmit light may be provided.

[0027] Other specific details of the present invention are included in the detailed description and drawings. Effects of the invention

[0028] According to the vacuum cleaner nozzle of the present invention as described above, one or more of the following effects are provided.

[0029] According to the present invention, by minimizing light directed toward the opposite side of the object to be cleaned, glare is alleviated and the reliability of the product can be ensured.

[0030] In addition, by minimizing light loss, the brightness of the cleaning surface can be improved without increasing the number of light sources, and by expanding the light-providing area, the user's visibility of foreign substances is enhanced, allowing the user to efficiently perceive the cleaning environment and providing convenience to the user.

[0031] In addition, it provides light in the form of linear lighting, and in particular, since it can ensure uniformity of the light-emitting surface, it has the effect of improving the appearance quality in terms of design.

[0032] 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. Brief explanation of the drawing

[0033] FIG. 1 is a perspective view of a vacuum cleaner nozzle according to one embodiment of the present invention. FIG. 2 is a plan view of a vacuum cleaner nozzle according to one embodiment of the present invention. FIG. 3 is a cross-sectional view of a vacuum cleaner nozzle according to one embodiment of the present invention. FIG. 4 is an enlarged cross-sectional view for explaining a lighting device of a vacuum cleaner nozzle according to one embodiment of the present invention. FIG. 5 is a perspective view of the light guide portion of a vacuum cleaner nozzle according to one embodiment of the present invention. FIG. 6 is a schematic diagram showing the light path of a lighting device of a vacuum cleaner nozzle according to one embodiment of the present invention. FIG. 7 is a plan view of a lighting device for a vacuum cleaner nozzle according to one embodiment of the present invention. Figure 8 is an enlarged view of a part of Figure 7. FIG. 9 is an enlarged cross-sectional view for explaining a film member installed in a vacuum cleaner nozzle according to one embodiment of the present invention. Specific details for implementing the invention

[0034] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0035] 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.

[0036] 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.

[0037] FIG. 1 shows a perspective view of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 2 shows a plan view of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 3 shows a cross-sectional view of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 4 shows an enlarged cross-sectional view for explaining a lighting device of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 5 shows a perspective view of a light guide part of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 6 shows a schematic diagram showing a light path of a lighting device of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 7 shows a plan view of a lighting device of a vacuum cleaner nozzle according to an embodiment of the present invention, FIG. 8 shows an enlarged view of a part of FIG. 7, and FIG. 9 shows an enlarged cross-sectional view for explaining a film member installed on a vacuum cleaner nozzle according to an embodiment of the present invention.

[0038] Referring to FIGS. 1 to 3, the vacuum cleaner nozzle (10) of the present invention is described as follows.

[0039] The vacuum cleaner nozzle (10) 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.

[0040] That is, the vacuum cleaner nozzle (10) can be detachably connected to the vacuum cleaner body (not shown) or the extension tube (40). The vacuum cleaner nozzle (10) is connected to the vacuum cleaner body or the extension tube (40) so that the user can clean the object to be cleaned (floor surface) using the vacuum cleaner nozzle (10). At this time, the vacuum cleaner body to which the vacuum cleaner nozzle (10) is connected can separate dust from the air using a multi-cyclone method.

[0041] The vacuum cleaner nozzle (10) can be operated by receiving power from the vacuum cleaner body. Specifically, the vacuum cleaner nozzle (10) can be operated by receiving power from a battery (not shown) provided in the vacuum cleaner body.

[0042] 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 (10).

[0043] Accordingly, in this embodiment, the vacuum cleaner nozzle (10) can perform the role of sucking in foreign matter and air from the object to be cleaned (floor surface) and guiding it to the main body of the vacuum cleaner.

[0044] A vacuum cleaner nozzle (10) according to an embodiment of the present invention may be configured to include a nozzle housing (100), a driving unit (not shown), and at least one agitator (30).

[0045] For reference, the direction used in the present invention is explained as follows.

[0046] In the present invention, based on the state in which the vacuum cleaner nozzle (10) is placed on the object to be cleaned (floor surface), the direction away from the object to be cleaned (floor surface) can be called the upward direction (upper side), and the direction closer to the object to be cleaned (floor surface) can be called the downward direction (lower side). Additionally, based on the agitator (30), the direction in which the extension tube (40) is positioned can be called the rear of the vacuum cleaner nozzle (10), and the opposite direction can be called the front of the vacuum cleaner nozzle (10).

[0047] The nozzle housing (100) can form the shape of a vacuum cleaner nozzle (10) and can be coupled with an extension tube (40). A driving unit and an agitator (30) can be disposed inside the nozzle housing (100).

[0048] A suction port (130) may be formed in the nozzle housing (100). Specifically, a suction port (130) may be formed on the lower side of the nozzle housing (100). The suction port (130) 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 (10) through the suction port (130).

[0049] Inside the nozzle housing (100), a printed circuit board (not shown) for controlling a driving unit that drives the agitator (30) may be installed.

[0050] Additionally, a passage may be formed in the nozzle housing (100) that communicates with the suction port (130) and directs air flowing in from the suction port (130) to the main body of the vacuum cleaner.

[0051] 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 (130), and the upper end of the flow path can be connected to the extension tube (40).

[0052] At this time, the flow path connecting the intake port (130) and the extension pipe (40) 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.

[0053] This nozzle housing (100) may be composed of an upper housing and a lower housing, and may be combined with a pair of side covers (120) provided to cover openings on both sides.

[0054] The nozzle housing (100) may be rotatably coupled to at least one wheel (not labeled) that can roll along the bottom surface (ground) at the rear.

[0055] With such wheels provided, when the vacuum cleaner nozzle (10) is placed on the floor surface, the wheels can come into contact with the floor surface. Therefore, when the vacuum cleaner nozzle (10) 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 (10) can be improved.

[0056] At least one agitator (30) is installed in the nozzle housing (100) and serves to separate foreign matter from the object to be cleaned. The agitator (30) can be positioned in front of the cleaner nozzle (10) and can be rotatably coupled to the nozzle housing (100).

[0057] The agitator (30) 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 (30) can be positioned in a direction that intersects the front-rear direction of the vacuum cleaner nozzle (10).

[0058] The outer surface of the agitator (30) may be provided with a brush or a member capable of increasing friction.

[0059] The agitator (30) is equipped with at least one gear to receive rotational power from the drive unit.

[0060] The agitator (30) can guide external dust and air to the suction port (130) by rotation. The agitator (30) can be rotated so that the outer surface facing the floor moves toward the suction port (130). In other words, the agitator (30) can be rotated counterclockwise relative to the view of the vacuum cleaner nozzle (10) from the left side of the vacuum cleaner nozzle (10). With this configuration, external dust and air can be guided toward the suction port (130) while frictionally contacting the agitator (30).

[0061] 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 (30) to transmit rotational power, and can reduce the rotational speed of the agitator (30) through the gear ratio. Through this, precise rotation of the agitator (30) can be controlled, and a relatively large force can be provided to the agitator (30).

[0062] Meanwhile, the vacuum cleaner nozzle includes a lighting device (200) to provide light when cleaning a dark space or when the cleaning environment is dark.

[0063] Referring to FIG. 4, a lighting device (200) is installed on one side of the nozzle housing (100) to provide light to the object to be cleaned. This lighting device (200) is installed on the upper side of the agitator (30) and emits light toward the front and toward the object to be cleaned. The lighting device (200) is positioned between the nozzle housing (100) and the agitator (30); specifically, the lighting device (200) may be positioned in the space between the part of the nozzle housing (100) covering the agitator (30) and the upper cover (110). The light emitted from the lighting device (200) passes through the light-transmitting part (140) of the nozzle housing (100) and proceeds toward the front and toward the object to be cleaned, illuminating a part of the object to be cleaned.

[0064] Here, the nozzle housing (100) has a space in which a lighting device (200) is installed above the agitator (30) in the storage space (101). Specifically, the upper cover (110) is installed with a space in the part covering the agitator (30) of the nozzle housing (100).

[0065] The upper cover (110) can form the upper exterior of the nozzle housing (100) and is provided in the form of a plate long in the left-right direction. This upper cover (110) is provided with a front support member (111) formed with a front end extending toward the object to be cleaned, and a light passage hole (111a) through which light passes is formed in the front support member (111). The light passage hole (111a) is formed by penetrating one side and the other side of the front support member (111), and at least a portion of the light guide member (230), which will be described later, can be inserted into the inside. Additionally, the light passage hole (111a) is provided to be equal to the left-right length of the light guide member (230) or longer than the left-right length of the light guide member (230) so that light emitted from the light guide member (230) can pass through. The front support member (111) can be positioned in front of the rotation axis of the agitator (30).

[0066] Additionally, the nozzle housing (100) may be provided with a light-transmitting portion (140). The light-transmitting portion (140) is positioned in front of the upper cover (110) and is made of a material capable of transmitting light. The light-transmitting portion (140) is provided to support the front support portion (111) of the upper cover (110) and to protect the light guide portion (230) that may be exposed through the front support portion (111).

[0067] Additionally, the light-transmitting portion (140) can form the front exterior of the nozzle housing (100) and can be made of a transparent material and positioned in the center of the left and right directions of the vacuum cleaner nozzle (10).

[0068] The lighting device (200) is positioned in front of the nozzle housing (100) and behind the light-transmitting part (140), and is positioned between the agitator (30) and the upper cover (110), and may be configured to include a substrate (210), a light source (220), and a light guide part (230).

[0069] The substrate (210) is placed in the storage space (101) of the nozzle housing (100) and can be positioned vertically with respect to the object to be cleaned. This substrate (210) can be positioned upright along the axial direction of the agitator (30). Additionally, the substrate (210) can be positioned at a certain distance from the light-transmitting part (140) and positioned further back than the rotation axis of the agitator (30). Furthermore, the substrate (210) can be positioned in the storage space (101) of the nozzle housing (100) so as to be closer to the rear surface than the front surface of the nozzle housing (100).

[0070] Through this, a space for the light guide part (230) to be placed in front of the substrate (210) is secured, and the length of the light guide part (230) in the front-rear direction can be sufficiently secured.

[0071] A light source (220) is installed on a substrate (210) to provide light forward and may be provided in at least one. A plurality of light sources (220) may be provided. For example, as shown in FIGS. 2 and FIGS. 7, when four light sources (220) are provided, two are arranged on the left and two on the right with a first interval, and the two light sources (220) arranged on the left and right may be arranged with a second interval. Here, the first interval may be more than twice the second interval, the first interval may be 30 mm to 36 mm, and the second interval may be 15 mm to 17 mm.

[0072] The lighting device (200) includes a light guide (230) to provide lighting in the form of linear lighting to the object to be cleaned.

[0073] Referring to FIGS. 4 to 8, the light guide portion (230) may be formed in a trapezoidal shape having thickness, but may be formed in a curved shape in the front-rear direction. The light guide portion (230) is positioned between the light transmission portion (140) and the substrate (210) and is formed in a solid shape so that light generated from the light source (220) can be incident on one side and emitted on the other side.

[0074] The light guide section (230) has an incident surface (231) into which light generated from the light source (220) is incident, and an exit surface (232) for emitting light. The light guide section (230) has the incident surface (231) positioned adjacent to the light source (220) and formed at the rear end, and the exit surface (232) positioned adjacent to the light transmission section (140) and formed at the front end. At this time, the incident surface (231) is positioned spaced forward from the light source (220) at a distance (g). At this time, the distance (g) between the light source (220) and the incident surface (231) may be approximately 0.5 mm, but is not limited thereto. Additionally, the length (L) of the light guide section (230) in the front-rear direction may be 28 mm to 30 mm, but is not limited thereto.

[0075] The incident surface (231) may be positioned perpendicular to the object to be cleaned and facing the substrate (210). In particular, the incident surface (231) may be formed with a thickness greater than that of the exit surface (232). That is, the light guide portion (230) may be formed such that the thickness of the one end where light is incident is greater than the thickness of the other end where light is emitted. For example, the light guide portion (230) may be formed such that the thickness decreases as it goes from the one end where light is incident to the other end where light is emitted.

[0076] Through this, light loss in the light input section (one end of the light guide section) can be minimized, and linear illumination can be implemented in the light emitting section (the other end of the light guide section).

[0077] Additionally, the discharge surface (232) may be positioned at a downward slope. That is, the discharge surface (232) may be formed at an angle with respect to the substrate (210) and may be formed at an angle with respect to a surface perpendicular to the object to be cleaned. Additionally, the discharge surface (232) may be positioned at an angle while forming a convex portion (234) to be described later.

[0078] Through this, light emitted from the emission surface (232) can travel toward the front and toward the object to be cleaned, and can mitigate glare caused by being directed toward the opposite side of the object to be cleaned.

[0079] Additionally, the light guide section (230) is inclined to expand the lighting area of ​​the object to be cleaned. Specifically, the light guide section (230) may be formed such that the length of the left-right direction of the emission surface (232) is longer than the length of the left-right direction of the incident surface (231). Additionally, the light guide section (230) may be formed such that the length of the left-right direction of the emission surface (232) is longer than the length of the left-right direction of the substrate (210).

[0080] The light guide section (230) is formed such that the axial length of the agitator (30) increases from the incident surface (231) to the exit surface (232), and may include a pair of inclined sections (233) connecting both sides of the incident surface (231) and the exit surface (232). The pair of inclined sections (233) are each positioned on both sides of the light guide section (230) and are positioned symmetrically with respect to each other. The pair of inclined sections (233) may be positioned at an angle such that they are each spread out to 20 to 25 degrees, and as the surface area of ​​the exit surface (232) is expanded, the light can spread more widely and an illumination area can be secured. The inclined section (233) is positioned at a certain angle (a1) with respect to a virtual reference line perpendicular to the substrate (210), and specifically, the angle (a1) of the inclined section (233) may be 20 to 25 degrees.

[0081] Accordingly, the lighting target area can be sufficiently expanded within the space where the light guide part (230) in the nozzle housing (100) can be installed.

[0082] The light guide portion (230) according to the present invention is formed in a curved shape to implement asymmetric light distribution. That is, the light guide portion (230) may be provided in a curved shape in the front-rear direction so as to have asymmetric light distribution with respect to a virtual reference plane parallel to the object to be cleaned.

[0083] In particular, to increase the amount of light directed toward the object to be cleaned among the light emitted from the light guide (230), the light guide (230) may be provided with a convex portion (234) that is deformed so that a part of it protrudes toward the opposite side of the object to be cleaned. Accordingly, the light guide (230) may be positioned upward from the incident surface (231) toward the convex portion (234) and downward from the convex portion (234) toward the exit surface (232).

[0084] Referring to FIG. 6, as the light guide portion (230) is provided with a convex portion (234), light is emitted asymmetrically and asymmetric light distribution is implemented, and the light in the upward direction that causes glare while being emitted forward and directed toward the object to be cleaned is controlled.

[0085] Additionally, referring to FIG. 8, the light guide portion (230) may have at least one concave portion (231a) in the light input portion. This concave portion (231a) is formed on the incident surface (231) of the light guide portion (230) and is positioned to face the light source (220) to widely diffuse the incident light. The concave portion (231a) may be provided in a shape that gradually sinks toward the center, and the center may be connected by a curved surface. The concave portion (231a) may be formed in a 'v' shape and may include a pair of inclined surfaces, and the angle of inclination (a2) of the inclined surfaces may be formed at 24 to 28 degrees with respect to the incident surface (231).

[0086] For example, when the beam angle of light generated from the light source (220) is 120 degrees and the light guide (230) is not provided with a concave portion (231a), the light incident on the light guide (230) travels at an angle of approximately 70 degrees inside and the beam angle narrows. In particular, the light generated from the light source (220) has a high light intensity in the central part, so a spot occurs on the emission surface (232) of the light guide (230), and a spot phenomenon occurs where light is partially concentrated on the surface to be cleaned, which lowers product reliability and may cause inconvenience to the user.

[0087] On the other hand, when the beam angle of light generated from the light source (220) is 120 degrees and the light guide part (230) is provided with a concave part (231a), the light incident on the concave part (231a) of the light guide part (230) spreads out at an angle of approximately 100 degrees inside and can secure a relatively wide beam angle. In particular, it has the effect of mitigating the occurrence of a spot on the exit surface (232) of the light guide part (230), thereby increasing product reliability and relieving user inconvenience.

[0088] Additionally, referring to FIG. 9, a film member (150) may be positioned in front of the emission surface (232) of the light guide section (230). The film member (150) may be formed to be equal to or longer than the length of the left-right direction of the emission surface (232) and may be positioned along the left-right direction in an upright state. Accordingly, light emitted from the emission surface (232) may pass through the light passage hole (111a) and then proceed through the film member (150) and the light transmission section (140).

[0089] This film member (150) is attached to the front support member (111) to cover the light passage hole (111a) and is positioned between the light transmission member (140) and the front support member (111). The film member (150) may be a diffuser that diffuses light to make it appear as a line light on the light-emitting surface of the light transmission member (140), and may be formed of a black tint that transmits light. Accordingly, when the lighting device (200) is off, it has the same color as the appearance of the nozzle housing (100), and when the lighting device (200) is on, a pattern in the form of a line or surface is displayed and can provide line light.

[0090] Accordingly, the appearance quality can be improved in terms of design, and the uniformity of the light-emitting surface can be ensured.

[0091] 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.

[0092] 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. Explanation of the symbols

[0093] 10: Vacuum cleaner nozzle 100: Nozzle housing 110: Upper cover 111: Front support 200: Lighting device 210: Substrate 220: Light source 230: Optical guide section 231: Induction surface 231a: Concave part 232: Out-of-land 233: Inclined section 234: Convex part

Claims

Claim 1 A cleaning nozzle comprising: a nozzle housing having an intake port formed for sucking in air containing dust; at least one agitator rotatably coupled to the nozzle housing; and a lighting device installed inside the nozzle housing to provide light to a cleaning object; wherein the lighting device comprises: a substrate disposed inside the nozzle housing; at least one light source installed on the substrate; and a light guide portion in which light generated from the light source is incident on one surface and emitted on the other surface to provide light to the cleaning object. Claim 2 A vacuum cleaner nozzle according to claim 1, wherein the light guide portion is positioned above the agitator. Claim 3 A vacuum cleaner nozzle according to claim 2, characterized in that the substrate is positioned behind the rotation axis of the agitator. Claim 4 A vacuum cleaner nozzle according to claim 3, wherein the substrate is positioned perpendicular to the object to be cleaned. Claim 5 A cleaning nozzle according to claim 1, wherein the light guide portion is provided in a curved manner in the front-rear direction so that the light emitted to the other surface has asymmetric light distribution with respect to a virtual reference plane parallel to the object to be cleaned. Claim 6 A cleaning nozzle according to claim 5, wherein the light guide portion is provided with a convex portion having one side protruding toward the opposite side of the object to be cleaned, and is arranged to be inclined downward toward the emission surface from which light is emitted. Claim 7 A vacuum cleaner nozzle according to claim 1, wherein the light guide part comprises: an incident surface into which light is incident and which is positioned along the axial direction of the agitator; and an exit surface into which light is emitted and which is positioned along the axial direction of the agitator and which is positioned further forward than the incident surface, wherein the exit surface is provided such that the length in the axial direction of the agitator is longer than the length in the axial direction of the agitator of the incident surface. Claim 8 A vacuum cleaner nozzle according to claim 7, wherein the light guide part further comprises a pair of inclined parts connecting both sides of the incident surface and the exit surface. Claim 9 A vacuum cleaner nozzle according to claim 1, wherein the light guide portion is characterized in that the thickness of one end where light is incident is thicker than the thickness of the other end where light is emitted. Claim 10 A vacuum cleaner nozzle according to claim 1, characterized in that the light guide portion is formed such that its thickness decreases from one end where light is incident to the other end where light is emitted. Claim 11 A cleaning nozzle according to claim 1, wherein the light guide portion is characterized in that the light emission surface is arranged to be inclined downward so as to emit light toward the object to be cleaned. Claim 12 A vacuum cleaner nozzle according to claim 1, wherein the light guide part is characterized in that the incident surface on which light is incident is spaced forward from the light source. Claim 13 A vacuum cleaner nozzle according to claim 1, wherein the light guide portion is characterized by having at least one concave portion disposed facing the light source on the incident surface where light is incident. Claim 14 A vacuum cleaner nozzle according to claim 13, characterized in that the concave portion is formed to gradually sink toward the center. Claim 15 A vacuum cleaner nozzle according to claim 1, wherein the nozzle housing is provided with a front support member disposed in front of the light guide member and having a light passage hole formed therein, and a film member attached to the front support member to cover the light passage hole and transmitting light.

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