JP3330737B2 - 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 structure of a vehicle lamp such as a rear combination lamp disposed at a rear portion of a vehicle, and more particularly to a structure in which water injected at a high pressure is injected into the inside of a vehicle at the time of washing. It relates to a structure of a lamp that can be prevented.

[0002]

2. Description of the Related Art In a vehicle lamp such as a rear combination lamp, for example, as shown in FIG. 8, a lens chamber 82 is formed by covering a front surface of a housing 80 containing a lamp with a lens 81. The lens chamber 82 is mounted on a vehicle by combining the housing 80 with a vehicle bumper. Drainage portions 83, 83 are formed at two lower portions of the lens chamber 82, and water that has entered the lamp chamber 82 is discharged from each drainage portion 83 to the outside. . 9 or FIG. 1 corresponding to a section taken along line XX in FIG.
As shown in FIG. 0, an annular groove-shaped rim 85 is formed.
The flange 86 of the lens 81 is fitted to the rim 85. Conventionally, in such a drain portion 83 of an automobile lamp, a structure using a seal rubber 90 shown in FIG. 9 and a structure using a hot melt adhesive 91 shown in FIG. 10 are known. First, in the conventional example using the seal rubber 90 shown in FIG. 9, a seal rubber 90 continuous over the entire circumference of the rim 85 is interposed between the inner surface of the rim 85 and the end surface of the flange portion 86, and the seal rubber 90 is watertight. At the same time, a notch 87 for draining water is formed in the flange portion 86 in the drain portion 83 arranged on the lower side of the lamp chamber 82, and the notch portion 87 extends from the notch 87.
It discharges the water inside. Next, in the conventional example using the hot melt adhesive 91 shown in FIG. 10, the gap between the rim 85 and the flange portion 86 is filled with the hot melt adhesive 91 continuous over the entire circumference of the rim 85, and the hot melt adhesive 91 is formed. In addition to maintaining the watertightness with the agent 91, drainage holes 88 and 89 are formed in the outer peripheral wall of the flange portion 86 and the rim 85 in the drainage portion 83, and the water in the lamp chamber 82 is formed from the drainage holes 88 and 89. Is to be discharged.

[0003]

FIG. 9 and FIG.
In the conventional example, water that has entered the lamp chamber 82 can be discharged to the outside. However, when high-pressure water is injected at the time of car washing or the like, cutouts are formed as indicated by arrows H, I, and J. Part 8
There is a problem that high-pressure water flows backward from the drain holes 7 or the drain holes 88 and 89 and water enters the lamp chamber 82. When water enters the lamp chamber 82, water droplets adhere to the lens 81 and the lens 81 becomes cloudy. If water droplets adhere to the lamp, the lamp may be cut out. The present invention, in order to solve the problems in the prior art, prevents high-pressure water from flowing backward through a drain opening to prevent water from entering the lamp chamber even when high-pressure water is injected. It is an object of the present invention to provide a structure of a vehicular lamp that can be used.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an automobile lamp having a lamp chamber formed by combining a housing incorporated in a bumper of an automobile with a lens covering the front surface of the housing. An automotive lamp structure comprising a ring-shaped rim formed on the periphery of the housing and an annular flange formed on the periphery of the lens fitted to the ring-shaped rim formed on the periphery of the housing. A drainage opening is formed on a side surface of a lower side of the rim, and a guide plate is formed on a back side of the lower side of the rim to guide water flowing into a gap between the housing and a bumper for an automobile downward, and A structure of an automobile lamp, wherein a partition plate sandwiching the drain opening is formed in the annular groove-shaped rim.

[0005]

According to the present invention, there is no possibility that the adhesive filled between the annular groove-shaped rim and the flange portion is blocked by the partition plate and penetrates into the portion where the drain opening is formed. The water jet injected into the gap between the housing and the lens flows through the gap between the annular groove-shaped rim and the flange, and collects at the drain.
It is discharged outside through the drain opening. The water flow injected into the gap between the housing and the vehicle bumper is guided downward by the guide plate to prevent the water from flowing backward through the drain opening.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiment is an example embodying the present invention and is not intended to limit the technical scope of the present invention. FIG. 1 is a longitudinal sectional view of a main part of an automobile lamp according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a front view of the automobile lamp, and FIG. FIG. 5 is a sectional view taken along the line Z-Z in FIG. As shown in FIG. 3, for example, a rear combination lamp 1, which is an example of an automobile lamp, has a lamp chamber 4 formed by combining a lens 3 on the front surface of a housing 2. At two places on the lower side of the lamp chamber 4, drainage parts 5, 5 for discharging water that has entered the lamp chamber 4 to the outside are provided. The housing 2 is provided with an upper mounting portion 6 and lower pivots 7, 7 for fixing the entire rear combination lamp 1 to the body of the automobile. As shown in FIG. 4, the housing 2 is incorporated in a body 15 and a bumper 16 of an automobile, and a gap 17 is provided between the bumper 16 and the housing 2. Housing 2 and lens 3
A continuous gap 18 is formed over the entire circumference. An annular groove-shaped rim 10 is provided on the periphery of the housing 2.
Is formed over the entire circumference, and an annular flange portion 11 provided around the lens 3 is fitted in the rim 10. Gap 12 between rim 10 and flange 11
Is filled with a hot melt adhesive 14 except for the drain portions 5 and 5.

As shown in FIG. 5, in the drain portion 5, the gap 12 between the rim 10 and the flange portion 11 is not filled with the hot melt adhesive 14, and the drain opening 20 (see FIG. In the following, water that has entered the lamp chamber 4 is discharged from the gap 12 and the opening 20 to the outside. However,
If high-pressure water is injected into the gap 18 on the front surface between the lens 3 and the housing 2 or the gap 17 between the housing 2 and the bumper 16 at the time of washing the car, if the high-pressure water is not leaked, The jet may flow backward through the gap 12 or the opening 20 and enter the lamp chamber 4. Therefore, the drain unit 5 is provided with a structure for preventing water from entering the lamp chamber 4 due to the backflow of high-pressure water. As shown in FIGS. 1 and 2, a guide plate 2 extending obliquely downward and rearward on the lower surface of the lower side of the rim 10 over the entire width of the opening 20.
1 are integrally extended, and the guide plate 21
The water flowing into the gap 17 is guided downward along the direction to prevent the water from flowing backward from the opening 20. Note that the guide plate 21a can be further bent downward as shown by a two-dot chain line in FIG.
Further, as shown in FIG. 2, the outer partition plates 22, 22 and the inner partition plates 23, 23 for preventing the hot melt adhesive 14 from entering the section L corresponding to the opening 20 in the rim 10. Are formed so as to sandwich the opening 20. The number of dividers can be increased or decreased. On the other hand, notches 24, 24 are formed in the flange portion 11 of the lens 3 at positions corresponding to the two partition plates 22, and when the rim 10 and the flange portion 11 are fitted, each notch is formed. Each partition plate 22 is accommodated in the section 24.

On the inner surface of the outer peripheral wall of the rim 10, there is formed a flat stepped portion 25 in which the thickness of the outer peripheral wall of the rim 10 is increased in a range between the two partition plates 22. Numeral 25 blocks the inflow of high-pressure water injected toward the gap 18. A guide rib 27 in the form of a ridge is formed at the center in the width direction of the stepped portion 25.
The guide rib 27 discharges the water flowing on the stepped portion 25 from the opening 20 while rectifying the water along the arrows D and E. Note that the guide rib 27a may be formed on the lower surface of the flange portion 11 of the lens 3 as shown by a two-dot chain line in FIG. In one embodiment of the present invention, when high-pressure water is injected into the rear combination lamp 1 at the time of car washing or the like, the following two paths are conceivable as water entry paths into the lamp chamber 4. 1 through the gap 18 between the housing 2 and the lens 3 formed over the entire circumference of the housing 2 as shown in FIG. 1 and between the stepped portion 25 and the flange portion 11 as shown by an arrow F in FIG. Of the housing 2 and the bumper 1
6 is a path through which water injected into a gap 17 between the lamp chamber 6 and the lower part of the housing 2 reverses as shown by an arrow G and enters the lamp chamber 4 through the opening 20. First, the water that has entered from the path flows into the gap 13 between the rim 10 and the flange portion 11 along the arrow A, flows through the gap 13 and flows down to the lower side of the rim 10, and flows in two places from both the left and right directions. Drain parts 5,5
Focus on The water that has flowed into each draining section 5 is straightened by the guide ribs 27, and is quickly discharged out of the opening 20 (arrow C) along arrows D and E. In addition, even when the flow rate of the water in the path is large, the draining part
The water flowing into the lamp chamber 4 is interrupted on the stepped portion 25, is rectified by the guide ribs 27, and is discharged from the opening 20, so that water can be prevented from flowing back through the gap 12 (arrow F) and entering the lamp chamber 4. .

Next, regarding the path, the water flow injected into the gap 17 in the direction of arrow B is applied to the guide plate 21 (or 21).
While being blocked by a), the direction of the water flow is deflected downward. Therefore, even if water enters the opening 20,
Since the momentum of the water flow is weak, it is possible to prevent the water flowing as shown by the arrow G from flowing backward through the gap 12 and entering the lamp chamber 4. As described above, in one embodiment of the present invention,
High pressure water is injected into the rear combination lamp 1 at the time of washing the car and the like.
Also, even when water flows into the gap 17 between the housing 2 and the bumper 16, the water flows into the passage 12 at each of the drainage portions 5.
Can be prevented from flowing back into the lamp chamber 4 and the waterproofness of the rear combination lamp 1 provided with the drain portion 5 can be improved. It should be noted that the present invention is not limited to the above embodiment, but can be variously modified. For example, in the above embodiment, the present invention is applied to the rear combination lamp 1 as an example of an automobile lamp, but it is needless to say that the present invention can be applied to other automobile lamps. Further, as shown in FIG. 6, a rib 30 may be formed on the lower surface of the flange portion 11 instead of the stepped portion 25 so as to block the water flow injected into the gap 18. Further, as shown in FIG. 7, a rib 31 is formed on the lower surface of the flange portion 11 near the opening 20, and a drainage hole 32 is formed in the outer peripheral wall of the rim 10 to drain water outside the rib 31. The water may be discharged from the drain hole 32 to the outside.

[0010]

As described above, the structure of the automotive lamp according to the present invention is configured as described above. For example, high-pressure water is applied to the gap between the housing and the lens and the gap between the housing and the bumper during car washing. Even if the water is injected into the gap between the housing and the rim of the housing formed at the drain, the water can be prevented from flowing back into the gap between the flange of the lens and the water to enter the lamp chamber. The waterproofness of the vehicle lamp having the cutout can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of an automotive lamp according to one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a front view of an automobile lamp.

FIG. 4 is a sectional view taken along line YY of FIG. 3;

FIG. 5 is a sectional view taken along the line ZZ of FIG. 3;

FIG. 6 is a vertical sectional view of a main part showing another embodiment of the present invention.

FIG. 7 is a vertical sectional view of a main part showing still another embodiment of the present invention.

FIG. 8 is a perspective view showing a conventional automobile lamp.

FIG. 9 is a longitudinal sectional view showing a conventional water draining section using a seal rubber.

FIG. 10 is a longitudinal sectional view showing a conventional water draining section using a hot melt adhesive.

[Description of Signs] 1 ... Rear combination lamp 2 ... Housing 3 ... Lens 4 ... Lamp chamber 5 ... Water drain section 10 ... Rim 11 ... Flange section 12 ... Gap 20 ... Water drain opening 21 ... Guide plates 22, 23 ... Partition Board

Claims (1)

(57) [Claims] 1. A structure of a lamp for an automobile, wherein a lamp chamber is formed by combining a housing incorporated in a bumper of an automobile with a lens covering a front surface of the housing.
In the structure of an automotive lamp in which an annular flange formed on the periphery of the lens is fitted to an annular rim formed on the periphery of the housing, a lower side surface of the annular rim is provided. A drain plate is formed at the bottom of the rim, and a guide plate for guiding water flowing into a gap between the housing and the automobile bumper is formed on the back side of a lower side of the rim. A structure of an automobile lamp, wherein a partition plate sandwiching the drain opening is formed therein.