JPH07161204A - Lighting for vehicle - Google Patents

Abstract

PURPOSE:To provide a lighting for a vehicle which can be prevented from water penetration in rainfall or in car washing. CONSTITUTION:On a housing side face 3a facing the upper face 11a of a bumper 11 in lighting 1 for a vehicle, a water protecting rib 8 ranging over approximately whole width of the housing side face 3a is formed on the back face side of the inside edge 11b of the upper face 11a of the bumper 1 projectingly downward by the length L within the range of a clearance D. In this way, if a large quantity of water flow with an intensive water pressure is directly injected from the clearance D during car washing or the like, the water flow is brought into contact with the water protecting rib 8 so as to convert, its direction downward, so that no splash is caused in a vehicle body 10 close to the back face of the lighting 1 for a vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lamp such as a head lamp or a rear combination lamp, and more particularly to a structure for preventing the vehicle lamp from being flooded into the lamp chamber when it rains or is washed. It is a thing.

[0002]

2. Description of the Related Art As a conventional structure for waterproofing a vehicle lighting device of this type, for example, Japanese Utility Model Laid-Open No. 4-134747 discloses that water or the like does not enter between a front lens and a housing. An extension is provided on the front lens side, and an outer wall extension is provided on the housing side along the back surface of the extension,
It is disclosed that the extension and the outer wall extension door cover between the front lens and the housing.

FIG. 3 shows an example of the structure of this type of vehicle lighting device 90, which is rubbed against the bumper 11 during the work of mounting or removing the vehicle lighting device 90 to or from the vehicle body 10. In particular, the side surface 91a of the housing 91 facing the upper surface 11a of the bumper 11 of the vehicular lamp 90 is provided on the side surface 91a of the housing 91 so that the appearance of the bumper 11 is not deteriorated due to scratches or the like on the bumper 11 side. Upper surface 11a
Is provided with a predetermined gap D.

At this time, a ventilation hole 91c connecting a rubber tube 92 is provided on the back surface 91b of the housing 91 of the vehicle lamp 90, and the housing 91 and the lens 94 are constituted by the heat generated by turning on the light source 93. Light room 9
It is supposed that the internal pressure in 5 is prevented from increasing, and the ventilation hole 9
An upper waterproof rib 91d and a lower waterproof rib 91e are provided above and below 1c to prevent rainwater and the like from entering the lamp chamber 95 from the ventilation hole 91c including the rubber tube 92.

[0005]

However, in the above-described conventional vehicular lamp 90, a water flow W having a large water pressure and a large amount of water is discharged from the front side toward the gap D, such as when washing a car. Then, 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 No. 0, it becomes a splash shape that scatters in a random direction, causing water to enter the lamp chamber 95 despite the provision of the lower waterproof rib 91e and the like. For example, the lens 94
However, there is a problem that the performance is deteriorated and the commercial property is deteriorated due to the occurrence of fogging, and it has been a problem to solve this problem.

[0006]

As a concrete means for solving the above-mentioned conventional problems, the present invention relates to a vehicular lamp mounted on a vehicle body so as to maintain a predetermined gap with respect to an upper surface of a bumper, On the side surface of the housing facing the upper surface of the bumper of the vehicle lamp, a water-applying rib extending over substantially the entire width of the housing side surface has a length on the back side of the inner end of the upper surface of the bumper and within the range of the gap. An object of the present invention is to solve the above-mentioned conventional problems by providing a vehicular lamp which is formed so as to project downward and prevents water from entering due to a water flow entering through a gap.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIG. 1 is a vehicular lamp according to the present invention. The vehicular lamp 1 includes a lens 2 and a housing 3 in which a lamp chamber 5 for sealing a light source 4 is formed. Vent hole 6 connecting rubber tube 7 to
Is the same as that of the conventional example.

When the vehicle lamp 1 is mounted on the vehicle body 10, the bumper 11 and the lower side surface 3a of the housing 3 of the vehicle lamp 1 facing the upper surface 11a of the bumper 11 face each other. Similarly, the predetermined gap D is provided to prevent the bumper 11 from being scratched 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 prevented. A water-applying rib 8 is provided on the lower side surface 3a facing the water-applying rib 8.
This prevents water from entering the lamp chamber 5.

Here, the structure of the water-applying rib 8 will be described in more detail. The water-applying rib 8 is basically provided over substantially the entire width of the vehicle lamp 1 in the horizontal direction. There is. However, when the vehicular lamp 1 is extremely wide in the horizontal direction, it is not always necessary to provide it over the entire width of the vehicular lamp 1, and the ventilation hole 6
It suffices to sufficiently cover the position where is provided and to provide it in a range where the waterproof action described below can be exhibited.

Further, the water-applying rib 8 is the bumper 11
Is provided on the inner end 11b of the upper surface 11a of the vehicle, that is, on the rear side of the end located on the vehicle body 10 side. At this time, the length L within the range of the gap D is set from the side surface 3a to the vehicle body 10a. It is supposed to project downward when attached to.

Next, the operation and effect of the vehicular lamp 1 of the present invention having the above-described structure will be described. According to the present invention, the downwardly projecting water-applying rib 8 is further rearward than the inner end 11b of the bumper 11. By being provided on the side, for example, when washing a car, a large amount of water flow having a strong water pressure is applied to the gap D.
Even when water is discharged toward, the water flow W entering the gap D contacts the water contact rib 8 as shown in FIG.

Therefore, the water flow W can be changed in direction downward between the water application rib 8 and the inner end 11b of the bumper 11, and the vehicle body 10 is aligned in a straight line in a state where water is discharged.
Will never reach. Therefore, the water flow W does not come into contact with the vehicle body 10 near the back surface of the vehicular lamp 1 to be scattered and scattered, whereby the vehicular lamp 1
Does not cause water to enter the lamp chamber 5.

Here, the results of trial production and experiment for making the present invention by the inventor will be described. The length L of the water-applying rib 8 is the same as the gap D for the purpose of changing the direction of the water flow W. It is most effective when they have the same length L. On the other hand, in terms of workability when the vehicle lighting device 1 is attached to and detached from the vehicle body 10, it is more preferable that the length L of the water application rib 8 is shorter than the gap D in view of the amount of clearance obtained. It becomes a contradiction.

Therefore, in practice, it is necessary to strike a balance between the effect side and the workability side. However, according to the results of the experiments conducted by the inventor, more than half of the water 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 1 of the gap D.
/ 2 or more is preferable.

Further, the length L of the water applying rib 8 is set to the gap D.
In the case of the same, it is theoretically impossible to attach / detach the vehicular lamp 1 without causing the bumper 11 to be damaged, but in the actual vehicular lamp 1, the housing 3 is Since an appropriate clearance is also provided on the upper side surface 3b side (see FIG. 1) and is filled with a flexible member such as the packing 9, although the workability is slightly lowered, 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, the water-applying ribs extending over substantially the entire width of the housing side surface are provided on the rear surface of the inner end of the upper surface of the bumper. On the side and in the range of the gap, the vehicular lamp is formed so as to project downward, so that a large amount of water flow with a strong water pressure is directly injected from the gap when washing the car. At this time, the water flow is brought into contact with the water application ribs to change the direction downward, and it is assumed that splashing does not occur in the vehicle body near the back surface of the vehicular lamp, and the light chamber through the ventilation hole. It is possible to prevent water from getting into the water, thereby preventing condensation or fogging of the lens on the vehicle lamp, and to prevent deterioration of performance or deterioration of commercialability.

[Brief description of drawings]

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

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

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

[Explanation of symbols]

 1 …… Vehicle lamp 2 …… Lens 3 …… Housing 3a …… Lower side surface 3b …… Upper side surface 4 …… Light source 5 …… Light room 6 …… Vent hole 7 …… Rubber tube 8 …… Water hitting rib 10 …… Body 11 …… Bumper 11a …… Upper surface 11b …… Inner end

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Nakanishi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Mitsuo Yamada 4-8-30 Ogimachiya, Iruma City, Saitama (72) Invention Person Masahiko Sakamoto 3-8-11-202 Tsuji, Urawa-shi, Saitama (72) Inventor Shigeaki Watanabe 2-21-8 Haramachi, Meguro-ku, Tokyo

Claims (1)

[Claims] 1. A vehicular lamp attached to a vehicle body so as to maintain a predetermined gap with respect to an upper surface of a bumper, wherein a side surface of the housing facing the upper surface of the bumper of the vehicular lamp has a substantially horizontal shape of the housing side surface. A vehicular lamp, wherein a water-applying rib extending over the entire width is formed so as to project downward on the back side of the inner end of the upper surface of the bumper and as a length within the range of the gap.