JP2002343131A - Lamp structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide lamp structure, which needs no parts for countermeasure against waterproofing, and has good attachment workability of inner housing. SOLUTION: While forming projection parts 14 and 15 in spiracles 8 and 9, fitting ribs 21 and 22 are formed in an inner housing 16. By inserting the tip of these fitting ribs 21 and 22 into spiracles 8 and 9, nail parts 23 and 24 are hooked to the projection parts 14 and 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp structure, and more particularly to a lamp structure in which a method of attaching an inner housing is devised.

[0002]

2. Description of the Related Art A lamp of an automobile has a structure in which a bulb and an inner housing are housed in a lamp chamber formed by closing an opening of an outer housing with a cover (for a similar technique, see Japanese Patent Application Laid-Open No. 11-329020). ). The inner housing is attached to the outer housing in the lamp room, and has a reflector shape,
It has various structures depending on the application, such as a combination of inner lenses.

[0003] On the back wall of the outer housing, a breathing hole is formed to prevent the interior of the lamp chamber from being hermetically sealed and to prevent the cover from fogging. To prevent water from entering the interior of the light chamber through the breathing hole, cover the tip of the breathing hole with a waterproof type cap that allows only air to pass, or block water around the breathing hole. Waterproof measures are taken around the wall.

[0004] The inner housing is attached to the outer housing by a screw which is screwed from a back wall of the outer housing via a waterproof seal washer.

[0005]

However, in such a conventional technique, a seal washer for waterproofing is required in order to mount the inner housing.
This has led to an increase in the number of parts.

Further, since the inner housing inside the outer housing is fastened to the outer housing by a screw screwed in from the back wall side of the outer housing, a mounting portion of the inner housing is invisible to a worker.
It is very disadvantageous in terms of workability. Moreover, the work is very difficult because the work is performed with the seal washer interposed.

The present invention has been made by paying attention to such a conventional technique, and provides a lamp structure which does not require parts for waterproofing and has good workability in mounting an inner housing.

[0008]

According to the first aspect of the present invention,
A lamp structure in which an opening of the outer housing is closed by a cover to form a lamp chamber in which the bulb and the inner housing are housed, and a breathing hole is formed in a back wall of the outer housing. And an engagement rib having a claw engageable with the protrusion of the breathing hole is formed on a rear surface portion of the inner housing corresponding to the breathing hole. The inner housing was fixed to the outer housing by inserting the portion into the breathing hole and engaging the claw with the protrusion.

According to the first aspect of the present invention, the inner housing can be mounted simply by forming a projection on the existing breathing hole and engaging the engagement rib formed on the inner housing therewith. It is not necessary to interpose such components for waterproofing as described above, and the number of components can be reduced. Also, simply by inserting the inner housing from the opening side of the outer housing, the engagement rib is inserted into the breathing hole and the installation is completed, making the work easier than the conventional work from the back side of the outer housing. It is.

According to the second aspect of the present invention, two sets of breathing holes and engagement ribs are formed, and one claw portion and the other claw portion face opposite sides.

According to the second aspect of the present invention, the engaging forces of the claws formed on the two engaging ribs act in opposite directions, so that the inner housing is unlikely to come off even when an external force such as vibration is applied. .

According to a third aspect of the present invention, a positioning rib to be inserted into a breathing hole is formed on a rear surface portion of the inner housing, and a tip of the positioning rib is different from a direction of the claw portions which are opposite to each other. Abuts a portion of the breathing hole in different directions.

According to the third aspect of the present invention, by the contact between the positioning rib and a part of the breathing hole, the tip of the positioning rib is aligned with the direction of the claw portion facing the opposite side (for example, the horizontal direction). Can perform strict positioning in different directions (vertical directions).

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. This embodiment relates to a rear combination lamp 1 installed on the left and right sides of the rear part of an automobile. In this embodiment, only the left rear combination lamp 1 is shown as a representative.

In this rear combination lamp 1, a cover 3 is attached to an opening 2a of an outer housing 2 to form a lamp room 4, and a lamp 5 for a back lamp, a tail stop lamp, And a turn signal lamp bulb 7. Further, an inner housing 16 described later is provided in the lamp chamber 4.
Is stored.

On the back wall of the outer housing 2, cylindrical breathing holes 8 and 9 are formed vertically. The breathing holes 8 and 9 are not only vertically separated but also horizontally separated. A rubber cap 10 covers the distal ends of the breathing holes 8 and 9 for waterproofing. Breathing holes 8, 9
At the bottom of the slit, there is a slit 11
(See FIGS. 3 and 4), and the slit 11 connects the internal space of the lamp chamber 4 to the outside. Further, water blocking walls 12 and 13 are integrally formed around the breathing holes 8 and 9 to prevent water from approaching around the breathing holes 8 and 9.

At the entrances of the breathing holes 8 and 9 on the side of the lamp chamber 4, projections 14 and 15 facing the opposite sides in the left-right direction respectively protrude slightly into the insides of the breathing holes 8 and 9. It is formed in a state. That is, the upper breathing hole 8 has a projection 14 on the right side when viewed from behind, and the lower breathing hole 9 has a projection 15 on the left side. still,
The upper protrusion 14 extends not only on the right side but also on the upper side of the breathing hole 8 (see FIG. 4).

Each of the bulbs 5, 6, 7 installed in the light room 4
Are partitioned by reflectors 17, 18, and 19 formed in the inner housing 16 of the lamp room 4, respectively.
Each reflector 17, 18, 19 has an inner lens 20.
Is also installed.

The inner housing 16 has a shape substantially corresponding to the outer housing 2, and engagement ribs 21, 2 are provided on the rear surface thereof at positions corresponding to the breathing holes 8, 9, respectively.
2 are formed. These engagement ribs 21 and 22 are
It has a length that can be inserted into the breathing holes 8 and 9. A claw portion 23 is formed at a tip of the upper engagement rib 21 on a side corresponding to the projection 14 of the upper breathing hole 8, and a claw 23 is formed at a tip of the lower engagement rib 22 on the opposite side. A part 24 is formed. Further, a positioning rib 25 that can be inserted into the corresponding breathing hole 8 is formed at a position adjacent to the upper engagement rib 21.

The inner housing 16 is attached to the outer housing 2 before the cover 3 is attached by setting the inner housing 16 through the opening 2a, and connecting the engagement ribs 21, 22 and the positioning rib 25 to each other. It only has to be inserted into the corresponding breathing holes 8,9. Then, the claw portions 23 and 24 of the respective engagement ribs 21 and 22 are engaged with the projections 14 and 15 of the breathing holes 8 and 9, and a state of attachment to the outer housing 2 is obtained. As described above, the engagement ribs 21 and 22 are inserted into the breathing holes 8 and 9 only by inserting the inner housing 16 from the opening 2a side of the outer housing 2 to complete the mounting. The work is easier than the work from behind.

In the mounted state, the contact portion 26 (see FIG. 5) on the peripheral edge of the inner housing 16 contacts the peripheral edge of the outer housing 2, and the claw portions 23, 24 correspond to the respective breathing holes 8, 9.
In this state, the inner housing 16 is securely attached to the inner housing 16 with a fastening force corresponding to the elastic engagement force between the claw portions 23 and 24 and the projection portions 14 and 15. Will be.

Also, the claws 23, 24 and the projections 14, 15
Are facing each other in the left-right direction, so that the engaging forces act in a state of pulling each other in the left-right direction, and are hard to come off even when an external force such as vibration is applied to the inner housing 16.

Further, the claws 23, 24 and the projections 14, 15
At the same time as the engagement, the upper positioning rib 25 comes into contact with the protrusion 14 that has wrapped around the upper surface of the upper breathing hole 8,
Positioning is performed in a direction (vertical direction) orthogonal to the direction (left-right direction) of the claw portions 23, 24 and the protrusions 14, 15, and the inner housing 16 is attached to the outer housing 2 with accurate positional accuracy. Can be.

As described above, according to this embodiment, the projections 14, 15 are formed in the existing breathing holes 8, 9, and the engagement ribs 21, 22 formed in the inner housing 16 are engaged therewith. The inner housing 16 can be attached only by this, so that there is no need to interpose a waterproof component (such as a seal washer) as in the related art, and the number of components can be reduced.

In the above embodiment, the combination lamp 1 on the rear side is taken as an example, but it may be on the front side, or may be a headlamp other than the combination lamp 1.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a sectional view taken along the line SA-SA shown in FIG. 1;

FIG. 4 is a sectional view taken along the line SB-SB shown in FIG. 1;

FIG. 5 is a sectional view taken along the line SC-SC shown in FIG.

[Description of Signs] 1 Rear combination lamp (lamp) 2 Outer housing 2a Opening 3 Cover 4 Light room 5, 6, 7 Bulb 8, 9 Breathing hole 14, 15 Projection 16 Inner housing 21, 22 Engaging rib 23, 24 Claw 25 Positioning rib

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F21Q 1/00 M J

Claims (3)

[Claims] 1. A lamp structure in which an opening of an outer housing is closed by a cover to form a lamp chamber in which a bulb and an inner housing are housed, and a breathing hole is formed in a back wall of the outer housing. Forming a projection protruding inward on a portion of the inner housing, and forming an engagement rib having a claw portion engageable with the projection of the breathing hole on a rear surface portion corresponding to the breathing hole of the inner housing; A lamp structure wherein the inner housing is fixed to the outer housing by inserting the claw portion of the engagement rib into the breathing hole and engaging the claw portion with the projection. 2. The lamp structure according to claim 1, wherein two sets of the breathing hole and the engaging rib are formed, and one claw portion and the other claw portion face opposite sides. Characteristic lamp structure. 3. The lamp structure according to claim 2, wherein a positioning rib inserted into the breathing hole is formed on a rear surface portion of the inner housing, and tips of the positioning ribs face opposite sides. A lamp structure characterized by being in contact with a part of a breathing hole in a direction different from the direction of a raised claw portion.