JP2011121574A - Washing device of lighting fixture for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing device of a lighting fixture for a vehicle capable of efficiently washing the lighting fixture for the vehicle by surely injecting a predetermined quantity of washing liquid in a required direction. <P>SOLUTION: In the washing device of the lighting fixture for the vehicle including a cylinder to which the washing liquid is fed, a piston which is slidably inserted in the cylinder, a valve case mounted on a tip end of the piston, a nozzle holder supported by the valve case, and an injection nozzle 4 supported by the nozzle holder, and the washing liquid is injected from an injection port 18 formed in the injection nozzle 4 toward the lighting fixture for the vehicle, a splash prevention rib 4a is formed at least along an upper edge of the injection port 18 of the injection nozzle 4. The splash prevention rib 4a is formed along a side edge of the injection port 18 of the injection nozzle 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning apparatus for spraying a cleaning liquid onto a vehicle lamp such as a headlamp to clean the surface thereof.

  For example, if the front surface of a vehicle, such as a headlamp, becomes dirty due to adhesion of dust, mud, etc., the amount of light may be insufficient. Therefore, if necessary, the cleaning liquid is sprayed toward the headlamp to clean the surface of the headlamp. The cleaning device is installed behind the front bumper. The cleaning device includes a cylinder to which cleaning liquid is supplied, a piston slidably fitted in the cylinder, a valve case attached to the tip of the piston, and a nozzle holder supported by the valve case. The injection nozzle is supported by the nozzle holder, and the cleaning liquid is injected from the injection nozzle toward the vehicular lamp.

  In such a cleaning apparatus, the nozzle is stored behind the front bumper when not cleaning, and when the headlamp is cleaned, the injection nozzle is moved forward from the opening formed in the front bumper by the pressure of the cleaning liquid. When the pressure of the cleaning liquid rises above the predetermined value, the check valve opens and the cleaning liquid is supplied to the injection nozzle, and the cleaning liquid is injected from the injection port that opens to the injection nozzle toward the headlamp, and is applied to the front surface of the headlamp. Adhered dust and mud are removed. When the cleaning of the headlamp is completed, the spray nozzle is returned to the storage position on the back side of the front bumper by the biasing means such as a spring and stored.

  Here, an example of a conventional injection nozzle is shown in FIGS.

  15 is a perspective view of a conventional injection nozzle, and FIG. 16 is a partial side sectional view showing a state in which the injection nozzle is assembled to a nozzle holder. The injection nozzle 104 shown in the drawing has a top formed by resin molding. An injection port 118 that is long in the circumferential direction is formed in a part of the outer periphery of the upper part. As shown in FIG. 16, the injection nozzle 104 is fitted and assembled on the outer periphery of a cylindrical portion 117b formed integrally with the upper portion of the nozzle holder 117, and the high-pressure cleaning liquid supplied to the nozzle holder 117 is cylindrical portion 117b. It flows to the injection nozzle 104 through the passage formed in the above, and is injected obliquely upward from an injection port 118 opening in the injection nozzle 104 toward the front surface of the headlamp (not shown).

  By the way, the injection port of the injection nozzle spreads so as to diffuse the cleaning liquid vertically and horizontally, and in order to simplify the mold, the injection port 118 has a general drawing direction in the direction of the arrow (upward) in FIG. It is formed as a cut-off structure by a die that is pulled out.

  For example, Patent Document 1 proposes an injection nozzle that can perform mist-like injection in a thin-film pattern at a wide angle. Specifically, water is made into a mist by gradually reducing the inner diameter of the conduction path formed in the injection nozzle in the direction of water flow, and the injection portion is viewed in the thickness direction and expanded from the base end portion toward the injection port. By opening it, the water injection is expanded in the left-right direction, and the injection portion is flattened in the axial direction of the conduction path to suppress the vertical expansion of the water.

  In Patent Document 2, a space portion is formed inside the head portion of an injection nozzle including a supply portion having a supply flow channel for supplying a cleaning liquid and a head portion having an injection port. A cleaning device has been proposed in which a flow restricting portion for the cleaning liquid is formed in the supply flow path of the supply portion so as to reduce the diameter of the head portion toward the space.

Japanese Patent Laid-Open No. 11-123347 JP 2005-178568 A

  However, the spray nozzle 104 shown in FIG. 15 and FIG. 16 is formed with a bite-structured jet port 118 by a mold drawn in the direction of the arrow (upward) in FIG. In addition to the necessary angle range α directed toward the headlamp, the cleaning liquid is sprayed up to an unnecessary angle range β above the headlamp, in order to clean the front surface of the headlamp. The amount of spray liquid supplied is insufficient, and unnecessary cleaning liquid that is not used for cleaning may be applied to the vehicle hood, window glass, or pedestrians or people on the spot.

  Note that the injection nozzle proposed in Patent Document 1 is used for the purpose of cooling water by spraying water onto a radiator of an automobile in the form of a mist, and Patent Document 2 describes the problem described above. A configuration for solving this problem is not disclosed.

  Accordingly, a first object of the present invention is to provide a vehicular lamp cleaning apparatus that can efficiently clean a vehicular lamp by reliably injecting a required amount of cleaning liquid in a required direction. is there.

  By the way, in a cleaning apparatus of the type in which the spray nozzle is fixed to the nozzle holder, the spray direction of the cleaning liquid from the spray nozzle cannot be adjusted, and the spray is sprayed along a substantially horizontal pattern in the left-right direction.

  However, the design of the headlamps in an actual vehicle includes not only a part with a horizontal part of the bonnet but also a part with a fish-eye shape and a part with a downward eye shape. There was a problem that it protruded from the front of the lamp.

  Therefore, a cleaning device in which the spray nozzle is tilted and fixed in accordance with the design of the headlamp has been proposed, but if such a configuration is adopted, it is necessary to prepare a cleaning device having a plurality of patterns for each design of the headlamp. There are a large number of types of cleaning devices required for the left and right headlamps, and mass production management is difficult.

  Therefore, the second object of the present invention is to cope with the cleaning of various types of vehicle lamps by expanding the area where the cleaning liquid can be sprayed by freely adjusting the cleaning liquid spraying direction in the three-dimensional direction. An object of the present invention is to provide a vehicular lamp cleaning device capable of performing

  In order to achieve the above object, the invention according to claim 1 includes a cylinder to which cleaning liquid is supplied, a piston slidably fitted in the cylinder, a valve case attached to the tip of the piston, In a vehicular lamp cleaning device comprising a nozzle holder supported by the valve case and an injection nozzle supported by the nozzle holder, and injecting a cleaning liquid from an injection port formed in the injection nozzle toward the vehicular lamp. The anti-scattering rib is formed along at least the upper edge of the injection port of the injection nozzle.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, scattering prevention ribs are formed along the side edge of the injection port of the injection nozzle.

  The invention according to claim 3 is the invention according to claim 2, wherein the left and right inner surfaces of the anti-scattering rib formed along the side edge of the injection nozzle of the injection nozzle are tapered surfaces extending toward the cleaning liquid injection direction. It is characterized by that.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the nozzle holder is press-fitted and fitted to the valve case by a spherical fitting portion so as to be rotatable in a three-dimensional direction. Features.

  The invention according to claim 5 is the invention according to claim 4, wherein the injection nozzle is press-fitted and fitted so as to be rotatable about an axis in a press-fitting direction into the nozzle holder.

  According to the first aspect of the present invention, since the anti-scattering rib is formed along at least the upper edge of the injection port of the injection nozzle, it is possible to prevent the cleaning liquid from being injected in an unnecessary direction that deviates upward from the direction toward the vehicle lamp. Since most of the cleaning liquid ejected from the ejection port of the ejection nozzle can be ejected toward the vehicular lamp, the vehicular lamp can be cleaned efficiently. Further, it is possible to prevent a problem that the cleaning liquid sprayed out of the direction toward the vehicle lamp is applied to the hood, window glass, or pedestrian of the vehicle.

  According to the second aspect of the present invention, since the anti-scattering rib is formed along the side edge of the injection port of the injection nozzle, the cleaning liquid can be accurately injected toward the vehicular lamp in both the vertical and horizontal directions. Thus, the vehicular lamp can be more efficiently cleaned, and problems such as spraying on a pedestrian or the like passing the side of the vehicle can be reliably solved.

  According to the invention described in claim 3, since the left and right inner surfaces of the anti-scattering rib formed along the side edge of the injection nozzle of the injection nozzle are tapered surfaces extending in the cleaning liquid injection direction, the injection is performed from the injection nozzle. The left and right spray angles of the cleaning liquid are defined within a desired range, and the cleaning liquid is intensively sprayed onto the portion of the vehicle lamp to be cleaned, preventing the cleaning liquid from splashing around the vehicle lamp and making the vehicle lamp more efficient and reliable. Can be washed.

  According to the fourth aspect of the present invention, since the nozzle holder is press-fitted and fitted to the valve case by the spherical fitting portion so as to be able to rotate in a three-dimensional direction, the cleaning liquid is ejected from the ejection nozzle held by the nozzle holder. Can be freely adjusted in a three-dimensional direction, the entire area of the surface of the vehicle lamp can be reliably cleaned with the cleaning liquid, and the vehicle lamp having a different design can be handled. For this reason, it is not necessary to prepare a large number of cleaning devices with different angles of the injection nozzle for each vehicle lamp having a different design, and the manufacturing cost can be reduced and mass production management can be facilitated.

  According to the fifth aspect of the invention, since the injection nozzle is press-fitted and fitted so as to be rotatable about the axis of the press-fitting direction to the nozzle holder, the injection direction of the cleaning liquid from the injection nozzle can be finely adjusted.

It is a side view of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a top view of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the principal part of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a front sectional view of an injection nozzle part of a cleaning device concerning Embodiment 1 of the present invention. It is a disassembled perspective view of the injection nozzle part of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the injection nozzle of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a sectional side view of the injection nozzle of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. (A), (b) is a plane sectional view of a check valve mechanism part and a jet nozzle part of a cleaning device concerning Embodiment 1 of the present invention. It is the sectional view on the AA line of Fig.8 (a). It is a front view of the injection nozzle of the washing | cleaning apparatus which concerns on Embodiment 2 of this invention. It is a side view of the injection nozzle of the washing | cleaning apparatus which concerns on Embodiment 2 of this invention. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. (A) is a front view which shows the injection pattern of the cleaning liquid to the headlamp by the conventional injection nozzle, (b) is a front view which shows the injection pattern of the cleaning liquid to the headlamp by the injection nozzle concerning Embodiment 2 of this invention. It is. It is a perspective view of the conventional injection nozzle. It is a fragmentary sectional side view which shows the state which assembled | attached the conventional injection nozzle to the nozzle holder.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<Embodiment 1>
1 is a side view of a cleaning apparatus according to Embodiment 1 of the present invention, FIG. 2 is a plan view of the cleaning apparatus, FIG. 3 is an exploded perspective view of the main part of the cleaning apparatus, and FIG. 4 is an injection nozzle of the cleaning apparatus. FIG. 5 is an exploded perspective view of the injection nozzle portion, FIG. 6 is a perspective view of the injection nozzle, FIG. 7 is a side cross-sectional view of the injection nozzle, and FIGS. 8A and 8B are cleaning apparatuses. FIG. 9 is a cross-sectional view taken along the line AA of FIG. 8A.

  A cleaning device 1 according to the present embodiment is a device for spraying a cleaning liquid toward a front surface (lens surface) of a headlamp (not shown) to clean the front surface, and is disposed on the back side of a front bumper (not shown). Has been placed. Although the cleaning device 1 is installed for each of the left and right headlamps, the configuration and operation are the same on the left and right, and therefore only one cleaning device 1 will be described below.

  A cleaning device 1 shown in FIGS. 1 and 2 has a piston (not shown) slidably inserted into a cylindrical cylinder 2 and a pair of left and right injection nozzles via a check valve mechanism 3 at the tip of the piston. 4 is attached.

  The cylinder 2 is supplied with cleaning liquid from a washer tank (not shown), and a plug 5 is provided at the rear end thereof. The inside of the cylinder 2 is connected to a pipe (not shown) connected to the plug 5. To the washer tank. A bracket 6 is attached to the outer periphery of the front end of the cylinder 2, and the cleaning device 1 is attached to the back side of a front bumper (not shown) via the bracket 6. Although not shown, a return spring is interposed between the cylinder 2 and a piston that is slidably inserted in the cylinder 2 as a biasing means that biases the piston in a direction in which the piston is pulled into the cylinder 2. ing.

  Next, details of the structure of the check valve mechanism 3 and the holding structure of the injection nozzle 4 will be described with reference to FIGS.

  As shown in FIGS. 3 and 8, the check valve mechanism 3 includes a valve 8 inside the valve case 7, a valve guide 9 that slidably holds the valve 8, and biases the valve 8 in the closing direction. The spring 10 is accommodated, and the entire cross-sectional shape is an elliptical shape that is flat in the horizontal direction.

  The valve case 7 is configured by joining and integrating case halves 7A and 7B which are divided into two parts in the front and rear, and one case half 7A is formed by combining a cylindrical portion 7a and a flat elliptic cylinder portion 7b. The rectangular engagement holes 11 (only the upper two are shown in FIG. 3) are formed at four locations on the entire circumference of the elliptic cylinder portion 7b, and a part of the opening end surface of the elliptic cylinder portion 7b (see FIG. 3). A V-shaped fitting groove 12 is formed in the upper part). And as shown in FIG. 8, the cylindrical valve seat 14 is formed in the center part of the wall 13 which partitions off the cylindrical part 7a and the elliptical cylinder part 7b of case half 7A.

  The other case half 7B is composed of a flat oval cylindrical portion 7c and a rectangular column portion 7d connected to the tip of the oval cylindrical portion 7c. The oval cylindrical portion 7c has a small outer diameter and a thin small diameter portion 7c1. And a thick large-diameter portion 7c2. The engagement claws 15 (shown in FIG. 3) are provided at four locations on the outer periphery of the small diameter portion 7c1 of the elliptic cylinder portion 7c (locations corresponding to the engagement holes 11 formed in the elliptic cylinder portion 7b of the other case half 7A). (Only the upper two are shown) project. Further, a part of the boundary (step part) between the large diameter part 7c2 and the small diameter part 7c1 of the elliptic cylinder part 7c (part corresponding to the fitting groove 12 formed in the elliptic cylinder part 7b of the other case half body 7A). A V-shaped fitting projection 16 is formed on the.

  Further, cylindrical portions 7e are formed on the left and right sides of the prism portion 7d formed at the tip of the case half 7B, and the nozzle holder 17 is formed in these cylindrical portions 7e. Each is press-fitted. Here, as shown in FIGS. 4 and 5, a spherical fitting portion 17a is formed at the base end portion of each nozzle holder 17, and the cylindrical portion of the valve case 7 into which the spherical fitting portion 17a is fitted. A concave spherical bearing 7f is formed on the inner diameter portion of 7e, and the spherical holder 17f of the nozzle holder 17 is press-fitted into the concave spherical bearing 7f, whereby the nozzle holder 17 is attached to the valve case 7. In a three-dimensional direction (all directions).

  Further, as shown in FIGS. 4 and 5, a cylindrical portion 17b is formed vertically at the outer end portion of each nozzle holder 17, and the injection nozzle 4 is press-fitted into the cylindrical portion 17b from above. However, the injection nozzle 4 is held so as to be horizontally rotatable around an axis (vertical axis) in the press-fitting direction into the nozzle holder 17. Each injection nozzle 4 is formed with an injection port 18 that opens toward the front surface of the headlamp (not shown).

  By the way, each injection nozzle 4 is integrally formed in a polygonal cylinder shape whose top is closed as shown in FIG. 6 by resin mold molding, and the slit-like injection ports that are elongated in the lateral direction on the outer periphery of the upper part. As shown in FIG. 7, the ejection port 18 opens obliquely upward toward the front surface of the headlamp (not shown). In the present embodiment, as shown in FIG. 6, the spray nozzle 4 is integrally formed with scattering prevention ribs 4 a along the upper edge and the left and right side edges of the spray port 18. In addition, in order to form the said scattering prevention rib 4a in the injection nozzle 4 by metal mold | die, the addition of the slide type | mold which slides to a horizontal direction is needed.

  Thus, the engaging claw 15 formed on the outer periphery of the small diameter portion 7c1 is formed by fitting the elliptic cylindrical portion 7b of one case half 7A into the outer periphery of the small diameter portion 7c1 of the elliptic cylindrical portion 7c of the other case half 7B. Is engaged with the engagement hole 11 formed in the oval cylindrical portion 7c, the fitting projection 16 on the case half 7B side is fitted into the fitting groove 12 on the case half 7A side, and the two cases The half bodies 7A and 7B are joined together while being positioned to assemble one flat oval cylindrical valve case 7.

  As shown in FIG. 3, the valve 8 is composed of a disc-shaped valve body 8a and a valve shaft 8b extending integrally from the center of the valve body 8a in the direction perpendicular to the axis, as shown in FIG. A ring-shaped seal member 19 is assembled to a portion of the valve body 8a that is seated on the valve seat 14.

  The valve guide 9 is composed of a small-diameter cylindrical portion 9A and an elliptical plate-like flange portion 9B integrally formed at the tip thereof, and as shown in FIG. 9, the cylinder of the flange portion 9B of the valve guide 9 A crescent-shaped opening 9a communicating with the injection nozzle 4 is formed on the left and right of the portion 9A.

  As shown in FIG. 8, the triangular prismatic valve shaft 8 b of the valve 8 is slidably fitted in the cylindrical portion 9 </ b> A of the valve guide 9. The central portion is supported so as to be movable in the front-rear direction (left-right direction in FIG. 8), and the valve 8 is urged by the spring 10 in the closing direction (the direction in which the valve seat 14 is seated). Here, the spring 10 is inserted into the outer periphery of the cylindrical portion 9 </ b> A of the valve guide 9, and is contracted between the valve body 8 a of the valve 8 and the flange portion 9 </ b> B of the valve guide 9. The spring constant of the spring 10 is set larger than the spring constant of the return spring (not shown).

  Thus, the valve guide 9 also has a function as a spring guide. In the valve case 7, the valve guide 9 is pressed against the wall in the valve case 7 by the reaction force of the spring 10 as shown in FIG. The position has been fixed.

  In the cleaning apparatus 1 configured as described above, when the headlamp is not cleaned, a piston (not shown) is drawn into the cylinder 2 as shown in FIGS. 1 and 2 by the urging force of the return spring. At this time, the valve 8 of the check valve mechanism 3 is pressed against the valve seat 14 by the spring 10 as shown in FIG. The injection nozzle 4 is stored on the back side of a front bumper (not shown).

  Thus, when the headlamp is cleaned by the cleaning device 1, a high-pressure cleaning liquid is supplied from a washer tank (not shown) to a cylinder 2 of the cleaning device 1 via a pipe (not shown). Then, the piston slides forward in the cylinder 2 by the pressure of the cleaning liquid, and pushes the injection nozzle 4 provided at the tip of the piston forward from the opening (not shown) formed in the front bumper. In this case, since the spring constant of the spring 10 is set larger than the spring constant of the return spring as described above, the valve 8 of the check valve mechanism 3 remains closed as shown in FIG. The cleaning liquid is not supplied to the injection nozzle 4.

  As described above, after the piston moves forward due to the pressure of the cleaning liquid, the pressure of the cleaning liquid rises above a predetermined value, and the force based on the pressure of the cleaning liquid acting on the valve 8 of the check valve mechanism 3 is greater than the biasing force of the spring 10. When the valve 8 becomes larger, the valve body 8a moves forward along the valve guide 9 and leaves the valve seat 14 as shown in FIG. 5 (b). As shown by the arrows in FIG. 8B, the valve case 7 flows forward, passes through the left and right openings 9a formed in the flange portion 9B of the valve guide 9, and branches left and right. It is supplied from the nozzle holder 17 to each injection nozzle 4. The cleaning liquid supplied to the jet nozzle 4 is jetted from the jet port 18 (see FIG. 8) toward the headlamp, and the dust, mud and the like adhering to the front face of the headlamp are washed away.

  Thus, in this embodiment, as shown in FIGS. 6 and 7, the diffusion preventing ribs 4a are integrally formed along the upper edge and the left and right edges of the injection port 18 of each injection nozzle 4. The cleaning liquid sprayed from the mouth 18 can be sprayed toward the front surface of the headlamp at an angle α shown in FIG. Therefore, it is possible to prevent the cleaning liquid from being ejected in an unnecessary direction that deviates upward from the angle range of α toward the headlamp, and most of the cleaning liquid ejected from the ejection port 18 of the ejection nozzle 4 is directed toward the headlamp. The front surface of the headlamp can be efficiently cleaned by washing away dust, mud, and the like adhering to the headlamp with the cleaning liquid. Further, it is possible to prevent the problem that the cleaning liquid sprayed out of the direction toward the headlamp is applied to the vehicle hood, window glass, pedestrian, or the like.

  In particular, in the present embodiment, the scattering prevention rib 4a is formed not only on the upper edge but also on the side edge of the ejection nozzle 18 in the ejection nozzle 4, so that the cleaning liquid is accurately directed toward the headlamp in both the vertical and horizontal directions. The front surface of the headlamp can be cleaned more efficiently, and problems such as spraying on a pedestrian passing by the side of the vehicle can be reliably solved. In some cases, a sufficient effect can be obtained simply by forming the anti-scattering rib 4a along the upper edge of the injection port 18 of the injection nozzle 4.

  Further, in the cleaning apparatus 1 according to the present embodiment, the spherical fitting portions 17a of the left and right nozzle holders 17 can be rotated in a three-dimensional direction on the concave spherical bearing 7f of the valve case 7 as described above. Since the press fitting is performed, the spraying direction of the cleaning liquid from the spray nozzle 4 held in the nozzle holder 17 can be freely adjusted in the three-dimensional direction (all directions), and the entire area of the headlamp surface can be reliably secured by the cleaning liquid. Can be washed. For this reason, it is possible to cope with cleaning of headlamps with different designs, and it is not necessary to prepare many cleaning devices with different angles of injection nozzles for headlamps with different designs, reducing manufacturing costs and facilitating mass production management. Can be achieved.

  Furthermore, in the present embodiment, the left and right injection nozzles 4 are press-fitted and fitted so as to be horizontally rotatable about the axis (vertical axis) in the press-fitting direction into the nozzle holder 17, so that the cleaning liquid from each injection nozzle 4 It becomes possible to finely adjust the injection direction.

  Thus, when the cleaning of the headlamp is completed as described above, a piston (not shown) is drawn into the cylinder 2 by the return spring, so that the injection nozzle 4 is returned to the retracted position on the back side of the front bumper, and the check valve The valve 8 of the mechanism 3 is closed again as shown in FIG.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.

  10 is a front view of an injection nozzle of a cleaning apparatus according to Embodiment 2 of the present invention, FIG. 11 is a side view of the injection nozzle, FIG. 12 is a sectional view taken along line BB in FIG. 10, and FIG. CC sectional view, FIG. 14 is a front view showing a spray pattern of the cleaning liquid onto the headlamp, where (a) is based on the conventional spray nozzle, and (b) is based on the spray nozzle according to the present embodiment. Is.

  Since the basic configuration of the cleaning apparatus according to the present embodiment is the same as that of the first embodiment and a part of the structure of the injection nozzle 4 is different, only the injection nozzle 4 will be described below. In the following, only one of the injection nozzles 4 is shown and described, but the other injection nozzle 4 is also configured in the same manner, and thus illustration and description thereof will be omitted.

  In the injection nozzle 4 according to the present embodiment, the anti-scattering rib 4a is integrally formed along the upper edge and the left and right side edges of the injection port 18 as in the first embodiment. As shown in FIG. 13, the inner surface 4 b-1 of the vertical rib-shaped side wall 4 b formed on the left and right side edges of 4 a is a tapered surface that expands in the cleaning liquid ejection direction.

  Therefore, in the present embodiment, the jet liquid is jetted from the jet ports 18 of the right and left jet nozzles 4 toward the front surface (lens surface) of the headlamp 20 of the vehicle shown in FIG. The front surface of the headlamp 20 is cleaned by washing away dust, mud, etc.

  Thus, also in the present embodiment, the diffusion preventing ribs 4a are integrally formed along the upper edge and the left and right edges of the injection nozzle 18 of each injection nozzle 4, so that the cleaning liquid injected from the injection nozzle 18 is moved up and down. In the direction, the fuel can be ejected toward the front surface of the headlamp 20 within an angle range of an angle α shown in FIG. In the present embodiment, as shown in FIG. 13, the inner surfaces 4b-1 of the left and right side walls 4b of the anti-scattering rib 4a are tapered surfaces that widen in the direction of spraying the cleaning liquid. The cleaning liquid sprayed from the head 18 toward the headlamp 20 can be regulated within the angle range of γ shown in the left-right direction, and the cleaning liquid is intensively sprayed on the portion of the headlamp 20 to be cleaned, to the periphery of the cleaning liquid. The headlamp 20 can be more efficiently and reliably washed while preventing the scattering of the light.

  Here, FIG. 14A shows a spray pattern of the cleaning liquid sprayed from the conventional spray nozzle 104 shown in FIGS. 15 and 16 to the headlamp 20, and in this case, the circular region R1 of the headlamp 20 is shown. The cleaning liquid is partially sprayed on the surface. On the other hand, in the present embodiment, as shown in FIG. 14 (b), the cleaning liquid is intensively sprayed on an elliptical wide region R2 that is long in the left-right direction in the vicinity of the center of the headlamp 20, thereby achieving a high cleaning effect. It was confirmed that it can be obtained.

  In the above, the embodiment in which the present invention is applied to a cleaning device used for cleaning a headlamp has been described. However, the present invention is applied to a cleaning device used for cleaning any other vehicular lamp. Of course, the present invention can be similarly applied.

DESCRIPTION OF SYMBOLS 1 Cleaning apparatus 2 Cylinder 3 Check valve mechanism 4 Injection nozzle 4a Spattering prevention rib of injection nozzle 4b Side wall of scattering prevention rib 4b-1 Side wall inner surface (taper surface) of scattering prevention rib
5 Plug 6 Bracket 7 Valve case 7A, 7B Case half 7a Case half cylindrical part 7b, 7c Case half elliptic cylinder part 7c1 Elliptical cylinder small diameter part 7c2 Elliptical cylinder large diameter part 7d Case half body Rectangular column portion 7e Cylindrical portion of prismatic portion 7f Concave spherical bearing of cylindrical portion 8 Valve 8a Valve body 8b Valve shaft 9 Valve guide 9A Valve guide cylindrical portion 9B Valve guide flange portion 9a Flange portion opening portion 10 Spring 11 Engagement Hole 12 Fitting groove 13 Wall in valve case 14 Valve seat 15 Engaging claw 16 Fitting protrusion 17 Nozzle holder 17a Spherical fitting portion of nozzle holder 17b Cylindrical portion of nozzle holder 18 Injection port 19 Seal member 20 Headlamp ( Vehicle lighting)

Claims (5)

A cylinder to which cleaning liquid is supplied, a piston slidably fitted in the cylinder, a valve case attached to the tip of the piston, a nozzle holder supported by the valve case, and a nozzle holder In a vehicular lamp cleaning apparatus that includes a supported injection nozzle and that injects a cleaning liquid from an injection port formed in the injection nozzle toward the vehicle lamp.
A vehicular lamp cleaning device, wherein a scattering prevention rib is formed along at least an upper edge of an injection port of the injection nozzle.   The apparatus for cleaning a vehicular lamp according to claim 1, wherein a scattering prevention rib is formed along a side edge of the injection port of the injection nozzle.   3. A vehicle lamp cleaning apparatus according to claim 2, wherein the left and right inner surfaces of the anti-scattering rib formed along the side edge of the injection nozzle of the injection nozzle are tapered surfaces extending toward the cleaning liquid injection direction. apparatus.   4. The vehicular lamp cleaning apparatus according to claim 1, wherein the nozzle holder is press-fitted and fitted to the valve case in a three-dimensional direction by a spherical fitting portion. 5. The vehicular lamp cleaning apparatus according to claim 4, wherein the injection nozzle is press-fitted and fitted so as to be rotatable about an axis in a press-fitting direction into the nozzle holder.

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