JPH0836903A - Socket cover for vehicle lighting fixture - Google Patents

Abstract

PURPOSE:To enhance ventilation performance and waterproofness. CONSTITUTION:A rubber socket cover 18 fitted to a cylindrical opening edge part 7 protruded at a rear part of a body 2 of a vehicle lighting fixture is provided with a cylindrical wall 23 fitted over the cylindrical opening edge part 7, and in the inner surface of the wall 23, two annular protruding strips 26, 27 separating to fore and aft from each other and abutting on outer surfaces of the cylindrical opening edge parts 26, 27 are formed, and ventilating grooves 41, 42 are formed on the cylindrical wall 23 between the protruding strips 26, 27 and the cylindrical opening edge part 7. At a lower part of the wall 23, two ventilation holes 29, 30 for air intake and discharge and communicated with the ventilating grooves 41, 42 are independently formed, and two partition walls 33, 34 for connecting the two protruding strips 26, 27 are formed at two positions at a space between the two ventilation holes and an upper part. The ventilation grooves 41, 42 are separated to the air intake groove 41 communicated with the air intake hole 30, and the discharge groove 42 communicated with the discharge hole 29. An air intake cutout 35 for communicating the air intake groove 41 with the body inside and a discharge cutout 38 for communicating the discharge groove 42 with the body inside are formed on the protruding strip 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket cover for a new vehicular lamp. Specifically, the inside and outside of the body are communicated through a vent hole provided in the socket cover that covers the rear opening of the body to increase the air permeability inside the body and prevent the mirrors and lenses arranged inside the body from fogging. In the socket cover of the vehicle lighting device, the ventilation property and the waterproof property are improved.

[0002]

2. Description of the Related Art Some vehicular lamps have an opening formed at a rear portion of a body, and a light bulb is replaced through the opening. In such a vehicular lamp, water is prevented from entering through the opening. There is one in which the opening is covered with a rubber socket cover.

Further, in a vehicle lamp, in order to prevent fogging of a reflecting mirror or a lens in the body at the time of lighting, or to quickly eliminate such fogging, the inside of the body is communicated with the outside air, and the inside of the body is lit at the time of lighting. There are some that are designed to promote the flow of air.

There is a method in which a vent hole formed in a socket cover is used to communicate the inside of the body with the outside air, for example, there is one disclosed in Japanese Utility Model Publication No. 5-14402.

[0005]

By the way, since the above-mentioned conventional socket cover has only two vent holes, whichever vent hole is used for intake or exhaust. The air flow inside the body was not constant and the air permeability was not sufficient.

[0006]

In order to solve the above-mentioned problems, a socket cover of a vehicular lamp according to the present invention is fitted in a cylindrical opening edge protruding from a rear part of a body of the vehicular lamp. A rubber socket cover to be mounted on a tubular wall, the tubular wall having a tubular wall fitted around the tubular opening edge portion, the tubular wall being spaced apart in the front-rear direction from the inner surface of the tubular wall. Two annular protrusions are formed so as to abut the outer surface of the edge portion, and a ventilation groove is formed between the cylindrical wall and the protrusion and the cylindrical opening edge portion. Two ventilation holes for intake and exhaust, which communicate with the ventilation groove, are independently formed in the lower part of the above, and the two ridges are connected between the two ventilation holes and at two upper positions. So that the two partition walls are formed and the ventilation groove communicates with the intake ventilation hole; The air vent hole and the exhaust air vent communicating with the exhaust air vent are separated from each other, and the notch for air intake, the air vent groove for exhaust and the interior of the body are connected to one of the ridges. The exhaust notch is formed.

[0007]

Therefore, in the socket cover of the vehicular lamp of the present invention, since the two vent holes are separately provided for intake and exhaust, respectively, the air flow inside the body is The air flow is constant from the ventilation hole to the exhaust hole, so that the flow of air in the body is promoted and the fogging of the reflecting mirror or the lens is effectively prevented or removed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the socket cover of the vehicular lamp of the present invention will be described below with reference to the illustrated embodiments.

In the figure, reference numeral 1 is a vehicle headlight, and 2 is its lamp body.

The lamp body 2 is made of synthetic resin such as AB.
It is made of S resin and has a recess 3 that is open toward the front. A mounting groove 4 is formed at the front opening edge of the lamp body 2 and opens forward.
Further, a large circular opening 6 is formed in the rear wall 5 of the lamp body 2, and an opening edge portion 7 of the opening 6 has a cylindrical shape protruding rearward. Then, the tubular opening edge portion 7
An inner flange 8 with a narrow width is formed at the rear end so as to project inward, that is, toward the center of the cylinder.

Reference numeral 9 denotes a lens, which is formed by integrally forming a front surface portion 10 that covers the front surface of the concave portion 3 of the lamp body 2 and a peripheral wall portion 11 that projects rearward from the peripheral edge of the front surface portion 10. The rear end portion is fitted into the installation groove 4 of the lamp body 2, and in this state, the lens 9 is fixed to the lamp body 2 by an appropriate means such as adhesion.

In this way, a lamp space 12 defined by the lamp body 2 and the lens 9 is formed.

Reference numeral 13 denotes a reflecting mirror, which is integrally formed with a parabolic surface portion 14 having a paraboloidal front surface and a side surface portion 15 protruding forward from a peripheral edge of the parabolic surface portion 14. The front surface 14a of the parabolic surface portion 14 is formed as a reflecting surface. In addition, at the center of the parabolic portion 14, the bulb mounting hole 1
6 is formed, and a light bulb 17 is detachably attached to the light bulb mounting hole 16.

The reflecting mirror 13 is supported by the lamp body 2 so as to be tiltable in the lamp space 12 by a supporting means (not shown). The base portion 17a of the light bulb 17 projects rearward from the light bulb mounting hole 16 and is located at a position substantially surrounded by the cylindrical opening edge portion 7.

A socket cover 18 is made of rubber, for example, EPT rubber.

The socket cover 18 has a light bulb fitting portion and a body fitting portion connected by a thin bellows portion.

The light bulb fitting portion 19 has a small-diameter cylindrical shape, is formed to be slightly thick, and has an annular projection 2 on its inner peripheral surface.
A plurality of 0, 20, ... Are arranged side by side in the axial direction.

The body fitting portion 21 has an annular shape as a whole, and a fitting groove 22 that is open toward the front is formed in the rear half portion. The outer cylindrical wall 23 forming the fitting groove 22 projects forward from the inner inner peripheral wall 24. The space between the rear ends of the cylindrical wall 23 and the inner peripheral wall 24 is the rear wall 2.
They are connected by 5. The groove width of the fitting groove 22 is substantially equal to the width of the inner flange 8 formed at the rear end of the tubular opening edge portion 7 of the lamp body 2.

Of the inner surface of the cylindrical wall 23, the front end and the inner peripheral wall 24
The annular protrusions 26 and 27 are integrally formed at two positions, that is, a position facing the front end of the. And the tubular wall 2
The portion of the inner surface of 3 between these ridges 26 and 27 is
As if the meat was scraped off, it is located further outside than the outer peripheral surface of the fitting groove 22. As a result, the ridges 26 and 2
A groove 28 having the ridges 26 and 27 as banks on both sides is formed between the groove 28 and the groove 7.

The outer surface of the front end portion of the inner peripheral wall 24, that is, the cylindrical wall 2
3 is located at a position substantially opposite to the protrusion 27 on the rear side of the locking protrusion 2
4a is projected.

At the lower end of the cylindrical wall 23, approximately in the center, the groove 2 is formed.
A vent hole 29 that opens into the groove 8 is formed, and a vent hole 30 that opens into the groove 28 is formed at a position slightly above the vent hole 29. Ventilation pipes 31 and 32 are provided so as to project downward from the outer peripheral surface of the cylindrical wall 23.
Reference numeral 1 is in communication with the ventilation hole 29, and reference numeral 32 is in communication with the ventilation hole 30. And these ventilation pipes 3
As for the lower ends of 1 and 32, 32 of them is located slightly above that of 31.

Reference numeral 33 is a partition wall formed so as to cross between the protrusions 26 and 27, and the ventilation holes 29 and 30 are provided.
Is formed at a position between and, rises from the bottom of the groove 28, and its tip is located at the same position as the tip of the ridges 26, 27.

34 is also a partition wall formed so as to traverse between the ridges 26 and 27, and is formed at a position near the upper end. The partition wall 34 also rises from the bottom of the groove 28, and the tip thereof is the ridge 26. , 27 at the same position as the tip.

Reference numeral 35 is a notch formed in the rear projection 27, which is formed near the ventilation hole 30 and is continuous with a concave groove 36 formed in the inner surface of the rear wall 25. Further, a concave groove 37 continuous with the concave groove 36 is formed on the surface of the inner peripheral wall 24 facing the cylindrical wall 23.

Reference numeral 38 is a notch formed in the rear projection 27, which is formed in a position close to the partition wall 34 from the vent hole 29 side, and which is continuous with the concave groove 39 formed in the inner surface of the rear wall 25. ing. Further, a concave groove 40 continuous with the concave groove 39 is formed on the surface of the inner peripheral wall 24 facing the cylindrical wall 23.

The socket cover 18 is fitted onto the cylindrical opening edge portion 7 of the lamp body 2. That is, the rear end portion of the tubular opening edge portion 7 is fitted into the fitting groove 22 between the tubular wall 23 and the inner peripheral wall 24, and the inner flange 8 of the rear end portion of the tubular opening edge portion 7 is inserted. The leading edge is located immediately behind the locking projection 24a of the inner peripheral wall 24. As a result, the socket cover 18
The cylindrical opening edge 7 is prevented from coming off. Also,
The ridges 26 and 27 of the cylindrical wall 23 are in a slightly crushed state because the tips thereof are in close contact with the outer peripheral surface of the cylindrical opening edge portion 7. Further, the light bulb fitting portion 19 is fitted on the base 17 a of the light bulb 17.

Then, the protrusion 2 of the socket cover 18
Since 6, 27 are in close contact with the outer peripheral surface of the tubular opening edge portion 7, the tubular wall 23 and the ridge 2 are provided between the partition walls 33 and 34.
Two flat ventilation grooves 41 and 42 which are surrounded by 6, 27 and the cylindrical opening edge portion 7 and extend in an arc shape are formed.
One of these ventilation grooves 41, 42 in which the ventilation hole 30 is located at the lower end thereof is an intake ventilation groove, and the intake ventilation groove 41 is notched at a position slightly above the intake ventilation hole 30. It communicates with 35. In addition, a ventilation hole 29 is provided at the lower end.
Is located at 42, which is an exhaust ventilation groove, and the exhaust ventilation groove 42 communicates with the notch 38 at its upper end.

At the rear end of the tubular opening edge portion 7, the tubular wall 23, the rear surface wall 25 and the inner peripheral wall 24 which form the fitting groove 22 of the body fitting portion 21 of the socket cover 18 are formed. In the meantime, a vent passage is formed by the notch 35 and the concave grooves 36 and 37, and the intake vent groove 41 and the lamp space 12 communicate with each other by the vent passages 35, 36 and 37. Further, a ventilation passage is formed by the notch 38 and the concave grooves 39 and 40 between the rear end of the tubular opening edge portion 7 and the tubular wall 23, the rear surface wall 25 and the inner peripheral wall 24. , 39, 40 communicate the upper end portion of the exhaust ventilation groove 42 with the lamp space 12.

In the automobile headlight 1, when the light bulb 17 is turned on, the air in the lamp space 12 is warmed, and the warmed air becomes lighter and moves upward, so that the lamp space in the lamp space 12 is lowered. Convection of air from above occurs. Further, since the ventilation paths 35, 36, 37 communicating with the intake ventilation groove 41 are opened below the lamp space 12, the outside air is exposed to the ventilation pipe 32, the ventilation hole 30,
It flows into the lamp space 12 through the ventilation groove 41 and the ventilation paths 35, 36, and 37.

Further, since the ventilation passages 38, 39, 40 communicating with the exhaust ventilation groove 42 are opened above the lamp space 12, the warmed and lightened air is passed through the ventilation passage 38, 39.
39, 40, ventilation groove 42, ventilation hole 29, ventilation pipe 31
It is discharged to the outside via.

Reference numeral 43 denotes a thin bellows portion which connects the light bulb fitting portion 19 and the body fitting portion 22.

As described above, in the above-described vehicle headlamp 1, the intake flow path opening to the lamp space 12 at the lower portion and the exhaust flow path opening to the lamp space 12 at the upper portion are provided independently of each other. Therefore, the air actively flows in the lamp space 12, and the fogging of the reflecting mirror 13 and the lens 9 can be swiftly removed.

Further, in the socket cover 18, the ventilation holes 29 and 30 are provided with ventilation pipes 31 and 32, respectively.
Is attached, it is difficult for water to enter the ventilation grooves 41 and 42 even if water is splashed on the rear portion of the vehicle headlamp 1, and the waterproofness is excellent. Further, since the positions of the lower ends of the ventilation pipes 31 and 32 are different in the vertical direction, even if the lower end of the ventilation pipe 31 located below is soaked in water, the lower end of the other ventilation pipe 32 is not soaked in water. In some cases, the ventilation of the outside of the lamp space 12 is ensured through the other ventilation pipe 32 that is not soaked in water.

In the automobile headlamp 1, the inner flange 8 is formed at the rear end of the tubular opening edge portion 7, but it is not necessary to form such an inner flange 8, or ,
An outer flange protruding outward may be formed. Of course, in the case of such deformation, it is of course necessary to change the width of the fitting groove 22 and the like according to the deformation.

[0035]

As is apparent from the above description, the socket cover of the vehicular lamp of the present invention is fitted in a cylindrical opening edge projecting from the rear part of the body of the vehicular lamp. A rubber socket cover having a tubular wall fitted onto the tubular opening edge portion, the tubular wall having an inner surface spaced apart in the front-rear direction and the tubular opening edge portion. Two annular projections that come into contact with the outer surface of the cylindrical wall are formed so that a ventilation groove is formed between the cylindrical walls and the cylindrical opening edge portion, and further, the lower portion of the cylindrical wall. Has two independent vent holes for intake and exhaust, which communicate with the ventilation groove, and connect the two vent holes to each other and to connect the two ridges at two upper positions. Two partition walls are formed in the air passage, and the ventilation groove communicates with the intake ventilation hole; An exhaust notch that connects the ventilation hole and an exhaust ventilation groove that communicates with each other, and connects the intake ventilation groove and the inside of the body to one of the protrusions, and an exhaust ventilation that connects the exhaust ventilation groove and the inside of the body. It is characterized in that a notch is formed.

Therefore, in the socket cover of the vehicular lamp of the present invention, since the two vent holes are separately provided for intake and exhaust, respectively, the air flow in the body is intake. The air flow is constant from the ventilation hole to the exhaust hole, so that the flow of air in the body is promoted and the fogging of the reflecting mirror or the lens is effectively prevented or removed.

It should be noted that the specific shapes and structures of the respective parts shown in the above-mentioned embodiments are merely examples of the embodiment when the present invention is carried out, and the technology of the present invention is applied by these. The scope should not be construed as limiting.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a vehicle headlamp equipped with a socket cover according to the present invention.

FIG. 2 is a front view of a socket cover.

FIG. 3 is a rear view of the socket cover.

FIG. 4 is a vertical sectional view of a socket cover.

FIG. 5 is a vertical cross-sectional view showing a state in which the socket cover is externally fitted to the cylindrical opening edge portion.

6 is a sectional view taken along line VI-VI in FIG.

7 is an enlarged cross-sectional view taken along the line VII-VII of FIG.

8 is an enlarged cross-sectional view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

 1 Automotive Headlight (Vehicle Lighting) 2 Lamp Body (Body) 7 Cylindrical Opening Edge 18 Vehicle Lighting Socket Cover 23 Cylindrical Wall 26 Projection 27 Projection 29 Exhaust Vent 30 Intake Pore 33 Partition wall 34 Partition wall 35 Intake notch 38 Exhaust notch 41 Intake ventilation groove 42 Exhaust ventilation groove

Claims (2)

[Claims] 1. A rubber socket cover fitted in a tubular opening edge portion projecting from the rear portion of a body of a vehicle lamp so as to fit onto the tubular opening edge portion. A tubular wall, and two annular projections are formed on the inner surface of the tubular wall, which are spaced apart in the front-rear direction and contact the outer surface of the tubular opening edge portion. A ventilation groove is formed between the ventilation opening and the cylindrical opening edge portion, and further, two ventilation holes for intake and exhaust, which communicate with the ventilation groove, are independently formed in the lower portion of the cylindrical wall. Two partition walls are formed so as to connect between the two vent holes and between the two protrusions at two upper positions, and the vent groove communicates with the intake vent hole. The intake ventilation groove is separated into an exhaust ventilation groove communicating with the exhaust ventilation hole, and the intake ventilation groove is formed in one of the ridges. A socket cover for a vehicular lamp, wherein an intake cutout for communicating with the inside of the body, an exhaust ventilation groove, and an exhaust cutout for communicating with the inside of the body are formed. 2. The socket cover for a vehicular lamp according to claim 1, wherein the exhaust notch is formed above the intake notch.