JP2586990Y2 - Lens structure of automotive lamp - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens structure of an automobile lamp having visibility even in a snowstorm or a snowfall.

[0002]

2. Description of the Related Art For example, a rear combination lamp using a turn signal lamp and a stop lamp is mounted around an automobile. The rear combination lamp is for confirming the direction change and the moving operation of the front vehicle on the rear vehicle side to ensure the safety of both vehicles. As shown in FIG. 15, the rear combination lamp 13 has a lens 2e, a hemispherical body 4 having a peripheral portion 3 for fixing the outer edge of the lens 2e and having a reflecting mirror on the inner surface, a filament for a turn signal and a stop signal for a stop. It comprises a lamp 5 having a filament. The lens 2e is formed from a flat lens. When the car travels during a snowstorm or a snowfall, as shown in FIG.
Adheres and accumulates on the lens 2e, and the lighting of the rear combination lamp 13 cannot be confirmed from the rear vehicle side. Therefore, means for removing the snow 6 using a heat ray or a wiper has been adopted. As a known technique for removing snow attached to a lens of an automobile, there is a technique disclosed in Japanese Utility Model Laid-Open No. 60-143061. The hot and cold adhesion heat ray panel heater attaches a heat ray panel heater body to the inner surface of a stop lens, a turn signal lens, etc. of an automobile, and melts and removes ice and snow attached to the lens surface by heating the heat ray panel heater body. It is. Further, as well-known techniques considered to be somewhat related to the lens structure of the present invention described in detail later, a taillight for a vehicle disclosed in Japanese Utility Model Laid-Open No. 58-68344 and a vehicle brake disclosed in a Japanese Utility Model Application Laid-Open No. Sho 63-43840 are disclosed. There is a lighting device. In both of the known techniques, an uneven portion is formed on the surface of the lens. Japanese Utility Model Laid-Open Publication No. Sho 62-43840 discloses that the light of a brake light is condensed by a light condensing part provided at one end of a light guide, and is transmitted to a luminous body connected to the other end, so that the light is transmitted during braking. An apparatus for lighting a luminous body is disclosed.

[0003]

As shown in FIG. 16, since the lighting of the general rear combination lamp 13 cannot be confirmed by the snow 6, the driver sometimes gets off during the snowfall or the like to remove the snow 6 during snowfall. It is necessary and extremely troublesome. On the other hand, in the case of the lens structure disclosed in Japanese Utility Model Application Laid-Open No. 60-143061, it is possible to remove snow adhered to the lens surface by the hot wire panel heater. However, since a large amount of snow adheres to the lens surface in a short time during running during the snowstorm, it is difficult to sufficiently remove the attached snow by the heat of the hot wire panel heater. Further, when the hot-wire panel heater is attached to the inner surface of the lens, wiring for connecting the hot-wire panel heater to the power supply and its sealing member are required, which complicates the structure and increases the cost. Meanwhile, Shokai 5
As shown in the drawings of JP-A-8-68344 and JP-A-62-43840, adhesion of snow to a flat lens is slightly prevented by providing an uneven portion on the lens surface. The structure has little effect. Further, in both technologies, the purpose and effect of the concave and convex portions on the lens surface are not described, and are merely mere concave and convex in design. On the other hand, since the light-emitting body disclosed in Japanese Utility Model Application Laid-Open No. 43840/1987 can be provided in an arbitrary place, for example, in a rear room, there is no snow adhesion even during snowfall, and braking of the front vehicle is confirmed from the rear vehicle side. obtain. However, there is a problem in that the light emitting body is additionally provided with a condensing portion, a light guide and the like, which is expensive.

[0004] The present invention solves the above problems, and has visibility even when snow adheres to the lens surface, reduces snow accumulation on the lens surface, and can be implemented relatively easily. It is an object of the present invention to provide a lens structure for an automobile lamp.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a structure of a lens of a lamp mounted around an automobile, wherein the lens projects outward from a surface of the lens. A plurality of protrusions are provided, and the protrusions constitute a lens structure of an automotive lamp having at least a sharp point at which the snow is hardly attached thereto.

[0006]

[Effect] Snow hardly adheres to the tip of the projection projecting from the lens surface. Therefore, it is confirmed that the light of the lamp leaks from the tip and is turned on. Further, even if snow adheres to the tip, the thickness of the adhered snow is thin, and lighting can be confirmed. Further, since a plurality of projections form irregularities on the surface of the lens, snow is less likely to accumulate as compared to a flat lens. In addition, it does not require a hot wire panel heater or electrical wiring,
It can be implemented at low cost.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 5 are drawings for explaining the first embodiment.
6 to 14 are drawings for explaining another embodiment.

[0008]

Embodiment 1 As shown in FIGS. 1 and 2, a rear combination lamp 1 has a lens 2 provided with a projection 7 and a peripheral portion 3 holding the outer edge of the lens 2 and a hemisphere having a reflecting mirror on the inner surface. It is composed of a lamp 5 having a face body 4, a filament for a turn signal and a filament for a stop. In this embodiment, the protruding portion 7 is formed in a conical shape as shown in FIG. 2, and the tip 8 protrudes at an acute angle. In addition, the protrusion 7 is formed from a transparent body. FIG.
As shown in (1), a plurality of protrusions 7 are formed over the entire surface 9 of the lens surface 9 of the lens 2, and in this embodiment, nine protrusions 7 are equally arranged. By forming the projections 7 on the lens surface 9, the lens 2 is formed in an uneven shape. FIG.
FIG. 3 shows a simple simulation diagram of the rear combination lamp 1 of FIG. 2, and will be described below with reference to FIG.

Next, the operation of the first embodiment will be described. When the vehicle travels during snowfall or snowstorm, snow 6 adheres to the lens surface 9 and the projection 7 of the lens 2 as shown in FIG. That is, the snow 6 adheres and accumulates along the uneven surface of the lens 2. In this case, as shown in the figure, the snow 6 hardly adheres to the tip 8 of the protrusion 7, and the tip 8 is exposed from the surface of the snow 6. Therefore, the light of the lamp 5 leaks from the tip 8 and the lighting can be confirmed from the rear vehicle side. FIG. 5 shows a case where the amount of snow 6 deposited on the lens 2 is large. In this case,
Although the tip 8 of the projection 7 is buried in the snow 6 as shown in the figure, the thickness of the snow between the surface of the snow 6 and the tip 8 is thin, and light from the tip 8 of the projection 7 leaks out. It is possible. As described above, the lighting of the rear combination lamp 1 can be confirmed from the rear vehicle side even during traveling during snowfall or snowstorm.

[0010]

FIG. 6 shows a second embodiment of the present invention. Example 1
In this embodiment, the lens 2 is formed integrally with the projection 7. However, in this embodiment, the lens surface 9 of a normal lens is used.
It is provided with a separate transparent cover 10 having a projection 7 thereon. The attachment means is not particularly limited, but is preferably a detachable structure so that the transparent cover 10 can be used only during the winter period. According to the rear combination lamp 1a of this embodiment, the same effect as that of the first embodiment can be obtained.

[0011]

Embodiment 3 As shown in FIGS. 7 and 8, the lens 2a of the present embodiment comprises a rectangular projection 7a juxtaposed in the vertical direction. The lighting of the lamp can be confirmed from the tip 8a of the projection 7a.

[0012]

Fourth Embodiment As shown in FIGS. 9 and 10, the lens 2b of the present embodiment has a rectangular projection 7b juxtaposed in the horizontal direction. Lighting of the lamp is confirmed from the tip 8b of the protrusion 7b.

[0013]

Fifth Embodiment As shown in FIGS. 11 and 12, the lens 2c of the present embodiment is composed of protrusions 7c having a triangular cross section which form the inclined surface 11 only on the upper surface side, and are juxtaposed in the lateral direction. The tip 8c is formed to protrude so that the lighting of the lamp can be confirmed. Further, the snow attached to the upper side of the protrusion 7c is easily dropped by the inclined surface 11, and the amount of snow accumulation can be reduced.

[0014]

Sixth Embodiment As shown in FIGS. 13 and 14, the lens 2d of the present embodiment has a projection 7d having a triangular cross section which forms an inclined surface 12 only on the lower surface side, and is juxtaposed in the lateral direction. The lighting of the lamp can be confirmed from the tip 8d.

Although the projections 7 and the like of various shapes have been described in the first to sixth embodiments, the shape, arrangement, number, and the like of the projections 7 and the like are not limited to the above-described embodiments. In the third to sixth embodiments, the protrusions 7 of each lens 2a and the like are used.
Although the case where a is formed integrally with the lens surface has been described, it is of course possible to attach a separate structure as shown in FIG.

[0016]

According to the present invention, the following remarkable effects are obtained. (1) By providing a projection protruding outward from the lens surface, it is possible to confirm the lighting of the lamp from the tip of the projection, and to light the front vehicle from the rear vehicle side during running such as during a snowstorm or snowfall. Can be confirmed. Thereby, safety of traveling is maintained. (2) By forming a plurality of protrusions, the lens is formed with irregularities, the amount of snow accumulation can be reduced, and a decrease in visibility is prevented. (3) Unlike the prior art, there is no need for a hot-wire panel heater body or its electric wiring, and there is no need to install a complicated light-emitting main body or the like, so that it can be implemented easily at low cost. (4) If the transparent cover forming the projection is formed separately and detachably attached to the surface of a normal lens,
The protruding portion can be adopted only during a winter period or during snowfall. (5) The projection can be easily formed by a molding method, and can be easily implemented because various shapes can be adopted.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a schematic diagram of FIG. 2;

FIG. 4 is a cross-sectional view for explaining the operation of the embodiment.

FIG. 5 is a cross-sectional view for explaining the operation of the embodiment.

FIG. 6 is a cross-sectional view of a second embodiment of the present invention.

FIG. 7 is a plan view showing only a lens part according to a third embodiment of the present invention.

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a plan view showing only a lens part according to a fourth embodiment of the present invention.

FIG. 10 is a side view of FIG. 9;

FIG. 11 is a plan view showing only a lens part according to a fifth embodiment of the present invention.

FIG. 12 is a side view of FIG. 11;

FIG. 13 is a plan view showing only a lens portion according to a sixth embodiment of the present invention.

FIG. 14 is a side view of FIG.

FIG. 15 is a sectional view showing a lens structure of a conventional rear combination lamp.

FIG. 16 is a schematic diagram for explaining a state at the time of snowfall in FIG. 15;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear combination lamp 1a Rear combination lamp 2 Lens 2a Lens 2b Lens 2c Lens 2d Lens 2e Lens 3 Peripheral edge 4 Hemisphere 5 Lamp 6 Snow 7 Projection 7a Projection 7b Projection 7c Projection 7d Projection 8 Tip 8a Tip Tip 8c Tip 8d Tip 9 Lens surface 10 Transparent cover 11 Inclined surface 12 Inclined surface 13 Rear combination lamp

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 57-143601 (JP, U) Japanese Utility Model Sho 61-153216 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) F21Q 1/00

Claims (1)

(57) [Scope of request for utility model registration] In a structure of a lens of a lamp mounted around an automobile, the lens is provided with a plurality of projections projecting outward from the surface of the lens.
The protrusions are at least difficult to adhere to the tip of snow
A lens structure for an automobile lamp having a sharp point .