JP2814192B2 - 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 vehicular lamp such as a headlamp or a rear combination lamp, and more particularly, to a structure for preventing the vehicular lamp from infiltrating into a lamp room when raining or washing a vehicle. Things.

[0002]

2. Description of the Related Art As a conventional structure for waterproofing a vehicle lamp of this type, for example, Japanese Utility Model Laid-Open Publication No. 4-134747 discloses a structure for preventing water or the like from entering between a front lens and a housing. An extension is provided on the front lens side, and an outer wall extension along the back surface of the extension is provided on the housing side,
The one that covers the space between the front lens and the housing with the extension and the outer wall extension door is disclosed.

FIG. 3 shows an example of the structure of a vehicle lamp 90 of this type. The vehicle lamp 90 is rubbed with the bumper 11 when the vehicle lamp 90 is attached to or detached from the vehicle body 10. In order not to cause scratches and the like on the bumper 11 side to cause an appearance defect, a side surface 91a of the housing 91 facing the upper surface 11a of the bumper 11 of the vehicular lamp 90 is provided with the bumper 11 Upper surface 11a
Is provided with a predetermined gap D.

At this time, a ventilation hole 91c connected to a rubber tube 92 is provided on the back surface 91b of the housing 91 of the vehicular lamp 90, and the housing 91 and the lens 94 are formed by the heat generated by the lighting of the light source 93. Light room 9
5 to prevent the internal pressure from rising.
An upper waterproof rib 91d and a lower waterproof rib 91e are provided above and below 1c, respectively, to prevent infiltration of rainwater or the like into the light chamber 95 from the ventilation hole 91c including the rubber tube 92.

[0005]

However, in the above-described conventional vehicle lighting device 90, a water flow W having a high water pressure and a large amount of water is discharged from the front side to the gap D as in the case of, for example, car washing. And the water flow W entering from the gap D linearly abuts the vehicle body 10 and the vehicle lamp 1
On the back surface of the lens 94, water droplets are scattered in a random direction, causing water to enter the lamp chamber 95 despite the provision of the lower waterproof ribs 91e and the like.
There is a problem in that the performance is lowered and the merchantability is lowered due to the occurrence of fogging, and the solution of this problem has been an issue.

[0006]

According to the present invention, there is provided a vehicular lamp mounted on a vehicle body so as to maintain a predetermined gap with respect to the upper surface of a bumper. On the side surface of the housing facing the upper surface of the bumper of the vehicular lamp, a water application rib extending over substantially the entire width of the housing side surface is provided on the rear side of the inner end of the upper surface of the bumper as a length within the gap. An object of the present invention is to solve the above-mentioned conventional problem by providing a vehicle lamp characterized by being formed so as to protrude downward, thereby preventing flooding due to a water flow entering from a gap.

[0007]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 is a vehicle lamp according to the present invention. The vehicle lamp 1 includes a lens 2 and a housing 3 in which a lamp chamber 5 for sealing a light source 4 is formed. Has a ventilation hole 6 connecting a rubber tube 7
Is similar to that of the conventional example.

When the vehicle lamp 1 is mounted on the vehicle body 10, the bumper 11 is positioned between the lower surface 3 a of the housing 3 of the vehicle lamp 1 facing the upper surface 11 a of the bumper 11. A predetermined gap D is provided so as to prevent the bumper 11 from being damaged when the vehicle lamp 1 is attached and detached. However, according to the present invention, the upper surface 11a of the bumper 11 of the housing 3 is also provided. A water contact rib 8 is provided on the lower side surface 3a facing the
This prevents water from entering the lamp chamber 5.

Here, the structure of the water application rib 8 will be described in more detail. The water application rib 8 is basically provided over substantially the entire width of the vehicle lamp 1 in the horizontal direction. I have. However, when the vehicular lamp 1 is extremely wide in the horizontal direction, it is not always necessary to provide the vehicular lamp 1 over the entire width of the vehicular lamp 1.
It is sufficient to cover the position where is provided sufficiently and to provide it in a range where the waterproof function described later can be exhibited.

The water contact rib 8 is provided on the bumper 11.
The inner end 11b of the upper surface 11a of the vehicle body, that is, the rear end of the upper surface 11a, that is, the end located on the vehicle body 10 side. It protrudes downward in the state of being attached to the camera.

Next, the operation and effect of the vehicle lamp 1 of the present invention having the above-described structure will be described. According to the present invention, the downwardly projecting water contact rib 8 is further rearward than the inner end 11b of the bumper 11. Is provided on the side, for example, a large amount of water flow having a strong water pressure when the car is washed, etc.
2, the water flow W entering the gap D abuts on the water application rib 8 as shown in FIG.

Therefore, the water flow W can be changed in a downward direction between the water application rib 8 and the inner end 11b of the bumper 11, and the water flow W is straightened while the water is discharged.
Will never be reached. Therefore, the water current W does not scatter and fall into contact with the vehicle body 10 in the vicinity of the rear surface of the vehicular lamp 1, whereby the vehicular lamp 1
Does not cause flooding in the lamp room 5.

Here, the results of a trial production and an experiment by the inventor to realize the present invention will be described. In order to change the direction of the water flow W, the length L of the water application rib 8 is set to be equal to the gap D. It is most effective to have the same length L. On the other hand, from the workability at the time of attaching and detaching the vehicular lamp 1 to and from the vehicle body 10, from the amount of clearance obtained, the length L of the water application rib 8 is more preferably shorter than the gap D. It will be inconsistent.

Therefore, it is necessary to match the effect surface and the workability in the implementation, but according to the results of the experiment by the inventor, more than half of the amount of the water flow W passing through the gap D is applied to the water contact rib 8. If they are brought into contact with each other, the purpose can be almost achieved. Therefore, the length L of the water application rib 8 is one of the gap D.
/ 2 or more is preferable.

The length L of the water-applying rib 8 is determined by the distance D
If it is the same as above, it is theoretically impossible to attach and detach the vehicular lamp 1 without causing scratches on the bumper 11, but in the actual vehicular lamp 1, the housing 3 The upper side 3b (see FIG. 1) is also provided with an appropriate clearance and is filled with a flexible member such as the packing 9, so that although the workability is somewhat reduced, the assembly itself is impossible. Absent.

[0016]

As described above, according to the present invention, on the side surface of the housing facing the upper surface of the bumper of the vehicular lamp, a water-applying rib covering substantially the entire width of the housing side surface is provided on the rear surface of the inner end of the upper surface of the bumper. With the vehicle lighting device formed so as to protrude downward as a length on the side and within the range of the gap, a large amount of water flow with a strong water pressure is directly injected from the gap, for example, during car washing. Sometimes, this water flow is brought into contact with the water contact rib to change the direction downward, and assuming that no splash is generated on the vehicle body near the back of the vehicle lamp, the light chamber through the ventilation hole is provided. This prevents water from infiltrating into the vehicle lamp, thereby providing an excellent effect of preventing condensation or fogging of the lens in the vehicle lamp and preventing deterioration in performance or commercial value.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram showing the operation of the same embodiment.

FIG. 3 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lamp for vehicle 2 ... Lens 3 ... Housing 3a ... Lower side 3b ... Upper side 4 ... Light source 5 ... Light room 6 ... Vent hole 7 ... Rubber tube 8 ... Water application rib 10 ... Body 11 ... Bumper 11a ... Top surface 11b ... Inner end

Continued on the front page (72) Inventor Hiroshi Nakanishi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Mitsuo Yamada 4-8-30 Ogimachiya, Iruma City, Saitama Prefecture (72) Inventor Masahiko Sakamoto 3-8-11-202, Tsuji, Urawa-shi, Saitama (72) Inventor Shigeaki Watanabe 2-21-8, Haramachi, Meguro-ku, Tokyo (56) References Japanese Utility Model Sho 61-14404 (JP, U) Japanese Utility Model Sho 61- 138102 (JP, U) Japanese Utility Model 4-6110 (JP, U) Japanese Utility Model 7-22402 (JP, U) Japanese Utility Model Application 6-72106 (JP, U) (58) Fields surveyed (Int. ⁶ , DB name) F21M 7/00 F21M 3/02 F21Q 1/00

Claims (1)

(57) [Claims] 1. A vehicular lamp mounted on a vehicle body so as to maintain a predetermined gap with respect to an upper surface of a bumper. A vehicular lamp, wherein a water contact rib extending over the entire width is formed on the rear side of the inner end of the upper surface of the bumper so as to protrude downward as a length within the range of the gap.