JP3165036B2 - Vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealless type vehicle lamp mounted on a motorcycle, in which water adhering to a joint portion between a lens body and a lens, which is directly covered with rainwater or car wash water, can easily flow. Further, the present invention relates to a vehicular lamp in which a gap for flowing water is formed at a joint portion.

[0002]

2. Description of the Related Art Conventionally, a vehicular lamp 51 such as a taillight mounted on a motorcycle generally has a lamp body 54 forming a lamp chamber 53 for accommodating a light source 52, as shown in FIGS. A lens 55 made of a coloring material such as red or amber that seals the opening of the lamp body 54 is separately molded, and the lamp body 54 and the lens 55 are detachable with screws 56, 56 and the like. However, a sealless type which is joined without using a sealing material such as an adhesive is often used. In such a sealless type vehicle lamp 51, since the lamp body 54 is attached to the vehicle body side, for example, when exchanging the disconnected light source 52, the screws 55 are loosened from the lens 55 side to loosen the lens 55. And a new light source 52 can be attached. Further, the sealless type lens 55 has a lens forming portion 55a having a condensing lens step, a diffusing lens step, and the like formed on the rear surface thereof for achieving a desired light distribution function, and an outer peripheral portion of the lens forming portion 55a. In many cases, a fixing leg 55a is formed to protrude to the rear surface side and to be fitted in a lens fixing fitting groove 54b formed in the opening peripheral portion 54a of the lamp body 54.

In such a vehicular lamp 51, the plate thickness t2 of the fixed leg 55a of the lens 55 is smaller than the groove width t1 of the fitting groove 54b formed in the opening peripheral portion 54a of the lamp body 54 (t1). > T2), and the lamp body 54
, The lens 55 can be easily assembled.

[0004]

However, in the sealless vehicle lamp 51 in which the lens 55 can be detached and the light source 52 can be replaced like the conventional taillight of a motorcycle described above, the lamp is not used. Groove 54b of body 54
Since a sealing material such as an adhesive cannot be filled in a joint portion between the lens 55 and the leg 55a of the lens 55, water droplets such as rainwater adhering to the gap C easily accumulate, and the water droplets accumulating in the gap C However, there has been a problem that the vehicle lamp 51 may be damaged by water being flooded into the lamp room 53 from this joint portion.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and prevents water droplets from staying in the upper portion of the opening peripheral portion of the lamp body, and has a gutter-like shape on both sides and a lower portion of the opening peripheral portion. The present invention provides a sealless type vehicle lighting device capable of preventing water droplets adhering to a joint portion between a lamp body and a lens from immersing into a lamp room by forming a gap between the lamp members and facilitating the flow of water droplets. It is intended for.

[0006]

In order to achieve the above object, a vehicular lamp according to the present invention is provided with a fitting groove formed in an opening peripheral portion of a lamp body, and the fitting groove is formed in the fitting groove. The fixing device according to any one of claims 1 to 3, wherein the fixing leg is formed in such a manner that a fixed leg is fitted and adhered, and a gap between an outer rib forming the fitting groove and the fixing leg is narrow at an upper portion of an opening peripheral portion of the lamp body. The gist is that the opening is formed so as to gradually widen from a side portion to a lower portion of a peripheral portion of the opening. In addition, the fixed leg is fitted without any gap on the upper side of the outer rib forming the fitting groove, and the gap between the outer rib of the fitting groove and the fixed leg gradually widens from the side to the lower part. It can also be formed as follows. The fixed leg may be formed so as to have a uniform thickness, or a step may be formed in the fixed leg, and the step may be fitted and adhered in a state where the rib forming the fitting groove is fitted to the step. Can also. Furthermore, a structure in which at least a surface portion of a fitting portion between the fitting groove of the lamp body and the fixing leg of the lens is closely contacted so that at least a surface portion thereof is substantially flush with each other, to prevent water droplets from remaining on the upper surface side of the vehicle lamp. You can also

According to the above construction, the gap between the fitting portion between the outer rib forming the fitting groove of the lamp body and the fixing leg of the lens becomes narrow at the upper position, and water drops such as rainwater stay in this portion. It becomes difficult to do. In addition, the gap in the fitting portion between the outer rib forming the fitting groove and the fixing leg of the lens in the upper part of the lamp body can be completely prevented from staying and infiltrating water droplets at that portion. . On the other hand, since the gap gradually widens from the side to the lower part of the periphery of the opening and a gutter-shaped gap is formed between the rib and the fixed leg, water droplets adhering to the upper part of the vehicular lamp are actively downwardly directed to the vehicular lamp. Since it can be washed down, it is possible to prevent water from entering the lamp room from the joint between the lamp body and the lens.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a vehicle lamp according to the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a first embodiment of a vehicle lamp according to the present invention. In the drawings, reference numeral 1 denotes a lamp body which forms a lamp chamber 3 for accommodating a light source 2, wherein a fitting groove 5 is formed on the entire edge of an opening peripheral portion 4. A lens 6 colored with a functional color such as red or amber is covered and sealed in the opening of the lamp body 1. A predetermined light distribution pattern is formed on the back surface of the lens 6. Are formed in the condenser lens step or the diffusion lens step 6a. A fixed leg 7 integrally formed with the lens 6 is formed on the outer peripheral portion of the rear surface of the lens 6. After the fixed leg 7 is fitted into the fitting groove 5 formed on the lamp body 1 side, , Screw 8,8
The seal-less type vehicle lighting device 9 is configured to be detachably fitted and adhered to each other and integrated. In addition, it is also possible to interpose a packing (not shown) between the fixed leg 7 and the fitting groove 5.

In the vehicular lamp 9 according to the present invention, the thickness of the fixing leg 7 formed on the outer peripheral portion of the back surface of the lamp body 1 is formed uniformly, and the outer side of the fitting groove 5 of the lamp body 1 is formed. A gap C1 formed between the rib 5a and the fixed leg 7 of the lens 6 is narrow at a position above the opening peripheral edge 4 of the lamp body 1, and both sides of the opening peripheral edge 4 (gap C2, C2).
To the lower part (gap C3), the width is gradually widened, especially at the lower part of the opening peripheral part 4 (C1 <C2 <C3). A plurality of positioning projections 10, 10,... Are provided on the fixed leg 7 of the lens 6 so that the lens 6 can be fitted and adhered to the opening peripheral portion 4 of the lamp body 1 in a state shifted upward. (See FIGS. 1 and 2).

Thus, the opening peripheral portion 4 of the vehicular lamp 9 is provided.
Water droplets such as rainwater and car wash water are prevented from staying in the upper part of the vehicle. In addition, the portion from the side to the lower portion of the opening peripheral portion 4 is formed so as to be gradually wide and gutter-shaped, so that the gaps C2, C2 to C3 serve as a portion functioning as a water droplet passage, and the vehicle lighting device Water droplets that have been wetted from the upper part of the vehicle 9 can be positively flowed down below the vehicular lamp 9 through these gutter-shaped gaps C2, C2, C3. The vehicle lighting device 9 configured as described above, even when mounted on a vehicle body with substantially the entire lighting device exposed, such as a motorcycle, removes water droplets attached to a joint portion between the lighting device body 1 and the lens 6. It is possible to smoothly flow down the vehicle lamp 9 and to prevent water from entering into the lamp chamber 3 from the joint between the lamp body 1 and the lens 6.

In the embodiment of the present invention, the gap C1 between the fixed leg 7 and the outer rib 5a forming the fitting groove 5 is formed narrower in the upper part of the opening peripheral portion 4 of the lamp body 1. However, it is also possible to fit the fixed rib 7 on the upper side of the outer rib 5a without any gap. If a gap is not formed on the upper side in this way, water droplets hardly stay on the upper side of the lamp body 1 and the lens 6 and flow down in the direction of the gutter-shaped gaps C2 and C2 formed on the side. It is possible to improve the flowability of water droplets to the water.

FIG. 4 shows a second embodiment of the invention in which a step is formed at the tip of the fixed leg of the lens of the vehicle lamp according to the present invention. In an embodiment of the second invention,
At the upper position of the vehicular lamp 9, a step 7a is formed at the tip of the fixed leg 7 by cutting the upper side to a depth corresponding to the thickness of the rib 5a outside the fitting groove 5, and this upper side is formed. The step 7a is configured to be joined in a state where the step 7a is abutted against the tip of the rib 5a outside the fitting groove 5. With this configuration, the joined lamp body 1 and the upper surface portion of the lens 6 are joined substantially flush with each other, and the upper surface can be formed flat, so that a structure excellent in the flow of water droplets is obtained. At the lower position of the vehicular lamp 9, a step 7b is formed at the tip of the fixed leg 7 by cutting the upper side to a depth corresponding to the thickness of the rib 5b inside the fitting groove 5, The inner step 7b is joined with the tip of the rib 5b on the inner side of the fitting groove 5 in a state of being abutted. Also in the second embodiment of the present invention, no gap is formed between the outer rib 5a and the fixed leg 7, and conversely, the lower gap C3 is smaller than in the first embodiment. Since it is formed widely, the flowability of water droplets that are wetted from above is extremely good.

[0013]

Since the vehicular lamp according to the present invention is constructed as described above, the gutter-shaped gaps formed on both sides and the lower portion of the opening peripheral portion of the lamp body are formed between the lamp body and the lens while the vehicle is running. Since the water droplets attached to the joint portion with the water can be positively flowed downward, it is possible to improve the drainage effect on the outer periphery of the lamp body and the lens.
The effect obtained by implementing the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a plan sectional view of the same.

FIG. 4 is a side sectional view showing a second embodiment of the vehicular lamp according to the present invention.

FIG. 5 is a side sectional view showing a conventional vehicular lamp.

FIG. 6 is a front view showing a conventional vehicular lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp body 4 Opening peripheral part 5 Fitting groove 5a Outer rib 5b Inner rib 6 Lens 7 Fixed leg 7a Step 7b Step 9 Vehicle lamp C1 Gutter-shaped gap (upper part) C2 Gutter-shaped gap (side part) C3 Gutter-shaped gap (bottom)

Claims (5)

(57) [Claims] 1. A vehicular lamp having a structure in which a fitting groove is formed in an opening peripheral portion of a lamp body, and a fixing leg formed on an outer peripheral portion of a back surface of a lens is fitted into and fitted to the fitting groove. The gap between the outer rib forming the mating groove and the fixed leg is formed to be narrow at the upper part of the opening peripheral part of the lamp body and gradually widen from the side part to the lower part of the opening peripheral part. Vehicle lighting. 2. A vehicular lamp having a structure in which a fitting groove is formed in an opening peripheral portion of a lamp body, and a fixing leg formed on an outer peripheral portion of a back surface of a lens is fitted into and fitted to the fitting groove. The fixed leg is fitted without any gap on the upper side of the outer rib forming the mating groove, and the gap between the outer rib of the fitting groove and the fixed leg is gradually widened from the side to the lower part. A vehicular lamp characterized by being formed. 3. The vehicular lamp according to claim 1, wherein the fixed leg is formed to have a uniform thickness. 4. The vehicular lamp according to claim 1, wherein a step is formed in the fixed leg, and the step is fitted and adhered in a state in which a rib forming the fitting groove is fitted. . 5. The vehicular lamp according to claim 4, wherein the fitting groove of the lamp body and the fitting portion between the lens and the fixing leg are fitted and contacted so that at least a surface portion thereof is substantially flush. .