JP2011253794A - Vehicular lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp capable of restraining its appearance from damage even though a function of the lamp is assured by preparing an opening of a vent hole on a body.SOLUTION: The lamp has the body 21 having the front opening opened ahead, a lens 22 for closing the front opening by fitting to a fitting section 21b formed on a peripheral edge section of the front opening of the body 21, a bulb unit 24 detachably installed from the back of the body 21 so as to face to a lamp chamber 23 formed with a matched structure with the body 21 and the lens 22, and a vent hole 21g formed on the body 21 and connecting between the lamp chamber 23 and the outside. A knurled section 22e is formed on at least a part of the lens 22, and the knurled section 22e is arranged so as to overlap with at least an opening end 21h at a lamp chamber side of the vent hole 21g in front view.

Description

  The present invention relates to a lighting device applied to a vehicle such as an automobile or a motorcycle.

  Conventionally, a lighting device applied to a vehicle such as an automobile or a motorcycle has a body main body having a front opening that opens forward (reference to the irradiation direction of illumination light flux) and a peripheral portion of the front opening of the body main body. Removably mounted from the back of the body body so as to face the lamp chamber formed by the lens body that fits the formed fitting portion and closes the front opening, and the body body and the lens. And a valve unit.

  Moreover, in order to alleviate the temperature difference between the lamp chamber and the outside due to the lighting of the bulb unit, the body body of such a lamp is known to have a vent hole that allows the lamp chamber to communicate with the outside. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 08-195109

  However, since the vent hole described above is open on the wall surface of the body body, the opening of the vent hole is visible when the lighting device is viewed from the front.

  Particularly in recent lighting equipment, the front shape of the lighting equipment is regarded as important as part of the design of the vehicle body. Thus, in many cases, the body main body is formed with an ineffective reflecting portion that does not reflect the illumination light beam in the periphery thereof, in addition to the reflector portion that defines the irradiation direction of the illumination light beam accompanying the lighting of the bulb unit.

  In order to maintain uniformity when the ineffective reflection portion is viewed from the front along with the reflector portion (effective reflection portion), a reflective coating is often formed by vapor deposition or the like. Therefore, the above-described opening of the air hole is recognized as a black point with respect to the silver reflective coating, and there is a problem that the appearance is impaired.

  In addition, in a headlamp for an automobile or the like, for example, a reflector part is formed directly on the body body in order to improve switching between a low beam and a high beam and to follow the irradiation direction when traveling on a curve. Instead, there is a separate movable reflector in the lamp room. In such a lighting device, if a vent is formed in the back of the movable reflector, the vent will not be visible from the outside. However, in a lighting device having a relatively simple configuration such as a turn signal lamp or a clearance lamp. However, arranging such an article having a blindfolding function causes a problem that the cost of parts increases. Moreover, it becomes a factor of the enlargement of the whole lighting apparatus, and the problem that it becomes difficult to arrange | position to a comparatively small vehicle body like a motorcycle arises especially.

  Therefore, the present invention has been made in view of the above-described problems, and is a lamp that can suppress deterioration in appearance while providing a function of opening the vent hole in the body body. The purpose is to provide.

  The present invention includes a body main body having a front opening that opens forward, and a lens that fits into a fitting portion formed at a peripheral edge of the front opening of the body main body to close the front opening. A valve unit detachably mounted from the back of the body main body so as to face a lamp chamber formed by the structure of the body main body and the lens, and formed in the body main body and the lamp chamber and the outside In the vehicular lamp provided with a vent hole that communicates with each other, at least a part of the lens is formed with a knurled portion, and the knurled portion has at least a lamp chamber side of the vent hole in a front view. It is provided so that it may overlap with an opening end.

  According to the vehicle lighting device having this feature, the knurled portion is provided so as to overlap with at least the lamp chamber side opening end of the vent hole when viewed from the front, and when the vehicle lighting device is viewed from the front, Since the lamp chamber side opening end of the vent hole cannot be visually recognized from the outside, it is possible to suppress the appearance from being damaged.

  Moreover, in the vehicle lighting device according to the present invention, the lens includes a lens body that forms a front portion, and extends from an outer peripheral end of the lens body toward the body body so as to be substantially perpendicular to the lens body. And an opening end on the lamp chamber side of the vent hole is provided so as to overlap the outer peripheral wall portion in a front view.

  According to the vehicle lighting device having this feature, the opening end of the ventilation hole side of the vent hole overlaps with the outer peripheral wall portion when viewed from the front, and when the vehicle lighting device is viewed from the front, Therefore, it is impossible to visually recognize the opening end on the lamp chamber side of the ventilation hole, so that the appearance (appearance) can be improved.

  Furthermore, in the vehicle lighting device according to the present invention, the lens body is formed in a polygonal shape having a plurality of corners when viewed from the front, and the lamp chamber side opening end of the vent hole is disposed at the corners. It is characterized by being.

  According to the vehicular lamp having this feature, the lens body is formed in a polygonal shape when viewed from the front, so that the knurled portion intersects at the corner where the vent is disposed. It is possible to make the room side opening end more difficult to visually recognize.

  Still further, in the vehicular lamp according to the present invention, an opening end on the lamp chamber side of the vent hole is disposed near an upper end of the lamp chamber.

  According to the vehicle lighting device having this feature, it is possible to make it difficult for the air warmed with the lighting of the bulb unit to stay in the upper part of the lamp chamber, and to efficiently discharge the air in the lamp chamber, The fogging of the lens can be suppressed.

  The vehicular lamp according to the present invention can prevent the appearance from being spoiled while the function of the vehicle body is ensured by providing an opening in the air vent.

1 is a side view of a motorcycle equipped with a vehicular lamp according to an embodiment of the present invention. It is a front view of the vehicle lighting device of one Embodiment of this invention. It is a side view of the vehicle lighting device of one Embodiment of this invention. It is a rear view of the vehicle lighting device of one Embodiment of this invention. It is AA sectional drawing of FIG. 2 which shows the vehicle lighting device of one Embodiment of this invention. It is BB sectional drawing of FIG. 2 which shows the vehicle lighting device of one Embodiment of this invention. It is CC sectional drawing of FIG. 2 which shows the vehicle lighting device of one Embodiment of this invention. It is an expanded sectional view of the principal part of the vehicle lighting device of one Embodiment of this invention.

  Next, a vehicular lamp according to an embodiment of the present invention is applied to a direction indicator (front turn signal lamp) on the front side of a vehicle body mounted on a scooter type motorcycle, and will be described with reference to the drawings. . The embodiments described below are preferred specific examples of the vehicle lighting device of the present invention, and may have various technically preferable limitations. However, the technical scope of the present invention is particularly limited to the present invention. Unless stated to limit the invention, it is not limited to these embodiments. In addition, the constituent elements in the embodiments shown below can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the contents of the invention described in the claims are not limited by the description of the embodiment described below, including the type of the lighting device.

  FIG. 1 is a side view of a motorcycle equipped with a vehicular lamp according to an embodiment of the present invention, FIG. 2 is a front view of the vehicular lamp according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a rear view of the vehicle lighting device according to the embodiment of the present invention, and FIG. 5 is a cross-sectional view of the vehicle lighting device according to the embodiment of the present invention. FIG. 6 is a sectional view taken along the line BB of FIG. 2 showing a vehicle lighting device according to an embodiment of the present invention. FIG. 7 is a sectional view taken along the line CC of FIG. Sectional drawing and FIG. 8 are expanded sectional views of the principal part of the vehicle lighting device of one Embodiment of this invention.

  In FIG. 1, a motorcycle 10 is arranged at the lower center of the vehicle body to place a step board 11 on which a driver's foot is placed, an operation handle 12 and a seat 13 arranged above and behind the vehicle body of the step board 11, A headlamp 14 as a lighting device (headlight) disposed near the center of the vehicle and a pair of (only one shown) front turn signal lamps 15 as lighting devices (direction indicators) disposed at the left and right of the front of the vehicle body. And a brake lamp 16 (stop lamp) disposed at the center of the rear part of the vehicle body, and a pair (only one of which is shown) of rear turn signal lamps 17 disposed on the left and right of the rear part of the vehicle body (direction indicators). And.

  Hereinafter, the lighting device of the present invention will be described with reference to FIGS.

  The front turn signal lamp 15 includes a body main body 21 having a front opening 21a that opens forward (reference to the irradiation direction of the illumination light beam), and a fitting portion 21b formed at the peripheral edge of the front opening 21a of the body main body 21. Is attached detachably from the back surface of the body body 21 so as to face the lamp chamber 23 formed by the lens 22 that is fitted to the lens body 22 and closes the front opening 21a and the body body 21 and the lens 22 are combined. And a valve unit 24.

  The body body 21 includes a reflector portion 21c protruding (bulged) rearward by integral molding of resin (for example, ABS resin) or the like, and a flange shape extending around the reflector portion 21c along the vehicle body shape. The ineffective portion 21d, the groove-like fitting portion 21b formed over the entire periphery of the ineffective portion 21d and provided with the resin sealant 25, and the substantially center of the reflector portion 21c. And a valve holding portion 21e.

  The body main body 21 is formed in a substantially triangular shape with the top of the vehicle body as a vertex, and a bracket 26 for fixing the vehicle body is provided in the vicinity of each corner. Further, on the front surface of the body main body 21, a reflective coating 21f is formed by vacuum vapor deposition of aluminum or the like over the entire surface of the reflector portion 21c and the ineffective portion 21d. The reflective coating 21f reflects the illumination light beam accompanying the lighting (flashing) of the bulb main body 28 of the bulb unit 24 in the reflector portion 21c toward the lens 22, and the reflection direction thereof is defined by the shape of the reflector portion 21c. .

  A vent hole 21g is formed near the upper corner of the body main body 21 so as to communicate the lamp chamber 23 with the outside. The vent hole 21g has a horizontally long cylindrical shape in the front-rear direction from the lamp chamber side opening end 21h toward the outer side opening end 21i, and is slightly widened so that at least a lower surface side portion thereof is inclined downward toward the rear. Yes. A cap 27 is provided on the rear end side of the vent hole 21g of the body body 21 so as to cover the rear side of the external opening end 21i and the lower part of the rear end portion of the vent hole 21g in a separated state. As a result, the air in the lamp chamber 23 heated with the lighting of the bulb unit 24 is exhausted through the vent hole 21g between the lamp chamber side opening end 21h and the external side opening end 21i, and the lamp chamber 23 is discharged. Since the inside is ventilated, it is possible to prevent the air in the lamp chamber 23 from being heated and expanding. Further, by breathing between the lamp chamber 23 and the outside, water droplets adhere to the lens 22 and the reflector portion 21c due to a high temperature difference between the lamp chamber 23 and the outside air. Can be suppressed. Furthermore, a cap 27 is provided so as to cover the lower part of the rear end portion of the vent hole 21g in a separated state so that air can be sucked and exhausted at the lower side of the vehicle body than the vent hole 21g. Since it is inclined downward toward the rear, it is possible to effectively prevent rainwater from entering the lamp chamber 23 through the vent hole 21g.

  The air hole 21g may be formed by using a part of the fitting portion 21b. In this case, the sealing material 25 is not disposed in a portion where the air hole 21g is installed. Thereby, thickening of the front turn signal lamp 15 accompanying the arrangement of the ventilation portion 21g can be suppressed.

  In the present embodiment, the lens 22 is formed of a colorless transparent or white transparent resin (for example, acrylic resin) in a front shape that substantially matches the outer peripheral shape of the body main body 21 in a front view. Specifically, the lens 22 includes a lens body 22a that is three-dimensionally curved at the front part, an outer peripheral wall part 22b that is continuously formed integrally with the outer peripheral end of the lens body 22a, and extends rearward. And a flange portion 22c uniformly formed in the circumferential direction from the wall portion 22b. Note that a linear prism (having a design function) or the like that defines the irradiation direction of the illumination light beam, a reflex reflector (retroreflective portion), or the like can be formed on the rear surface of the lens 22 as necessary. .

  A lance-shaped leg portion 22d facing the inside of the fitting portion 21b is formed on the rear surface side peripheral portion of the flange portion 22c. When the lens 22 is attached to the body main body 21, the leg portion 22d makes the lamp chamber 23 a sealed space by pressing the sealing material 25 with the tip facing the fitting portion 21b.

  The outer peripheral wall portion 22b is formed in a substantially expanded shape in the thickness direction from the peripheral portion of the lens 22 toward the body main body 21 side. Further, as shown in FIG. 8, a knurled portion 22e is provided on the inner surface of the outer peripheral wall portion 22b so as to overlap at least the lamp chamber side opening end 21h of the vent hole 21g in a front view.

  Here, knurling is a processing method for processing the back surface of the outer peripheral wall portion 22b into a fine substantially pyramid shape (which may be a quadrangular pyramid or a triangular pyramid), and when the illumination light beam passes through the knurling processing portion 22e. The lens 22 has a function of reflecting or scattering by the pyramid shape, and is used for expanding the illumination range. On the other hand, when the knurled portion 22e is viewed from the outside, it is possible to make it difficult to see the scenery on the opposite side through the knurled portion 22e.

  Therefore, by matching the opening diameter (see reference sign D in FIG. 8) or the shape of the lamp chamber side opening end 21h with the widening width (front view) of the outer peripheral wall portion 22b or the height and width of the knurled portion 22e, It is possible to make it difficult to visually recognize the lamp chamber side opening end 21h. Furthermore, since the lamp chamber side opening end 21h is arranged near the corner of the lens body 22a, the knurled portion 22e formed on the outer peripheral wall portion 22b intersects, and the lamp chamber side opening end 21h is Furthermore, it can be made difficult to visually recognize.

  The valve unit 24 includes a valve main body 28, a valve socket 29 that holds the valve main body 28, and a valve holder 30 for attaching the valve socket 29 to the body main body 21. The valve socket 29 is detachably held on the body main body 21 (valve holding portion 21e) so that the valve main body 28 can be replaced. The valve socket 29 is connected to the valve main body 28 with a wiring cord 31 for supplying power from an in-vehicle battery (not shown). Further, in the present embodiment, the bulb main body 28 is covered with an amber cap 32 held by the body main body 21, and the direct light directly directed to the lens 22 when the bulb main body 28 is turned on is changed to an orange lamp function. The color is secured. The amber cap 32 may be eliminated and the lens 22 may be a transparent amber lens 22.

15 ... Front turn signal lamp (vehicle lighting)
DESCRIPTION OF SYMBOLS 21 ... Body main body 21a ... Front opening part 21b ... Fitting part 21g ... Vent hole 21h ... Lamp chamber side opening end 22 ... Lens 22b ... Outer peripheral wall part 22c ... Flange part 22e ... Knurling part 23 ... Lamp chamber 24 ... Valve unit

Claims (4)

A body body with a front opening that opens forward;
A lens that fits into a fitting portion formed at a peripheral edge of the front opening of the body body and closes the front opening;
A bulb unit that is detachably mounted from the back of the body body so as to face a lamp chamber formed by a combined structure of the body body and the lens;
A vent hole formed in the body body for communicating the lamp chamber with the outside;
In vehicle lighting equipment equipped with
The lens has a knurled portion formed at least in part thereof,
The vehicular lamp according to claim 1, wherein the knurled portion is provided so as to overlap at least a lamp chamber side opening end of the vent hole when viewed from the front. The lens is
A lens body forming a front part;
An outer peripheral wall extending from the outer peripheral end of the lens main body toward the body main body and substantially perpendicular to the lens main body,
2. The vehicular lamp according to claim 1, wherein an opening end on the lamp chamber side of the vent hole is provided so as to overlap the outer peripheral wall portion in a front view. The lens body is formed in a polygonal shape having a plurality of corners in front view,
The vehicle lighting device according to claim 2, wherein an opening end on the lamp chamber side of the vent hole is disposed at the corner portion.   4. The vehicular lamp according to claim 1, wherein an opening end on the lamp chamber side of the vent hole is disposed near an upper end of the lamp chamber. 5.

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