JPH0112330Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a vehicular lamp having a back cover attached to the rear surface of the housing.

<Prior Art> For example, in a vehicle lamp where the rear side of the lamp is placed inside the trunk, in order to prevent the cord of the lamp bulb from being exposed inside the trunk, the back cover with the lamp bulb and cord placed inside is placed on the rear side of the housing. It is known that it can be attached to

This back cover is made of synthetic resin or the like, and is formed into a flat plate that forms part of the inner wall of the trunk room, and is detachably attached to the housing so that the lamp bulb can be replaced.

For example, in the case shown in FIG. 6, the back cover 1 is attached in such a manner that an engaging piece 2 formed on its side edge engages with the inner edge of the housing 3. As shown in FIG. That is, the engagement piece 2 is approximately U-shaped and fits into the inside of the housing 1, and the elastically deflecting outer end portion is a locking portion formed on the inner edge of the housing 1. It is designed to be hooked to 4. The back cover can be removed by operating the engagement piece 2 to disengage the terminal end portion from the locking portion 4.

By the way, the engagement piece 2 is integrally formed with the back cover 1, and when the back cover 1 is attached to the housing 3, a light is attached to the engagement piece 2 as shown in FIG. An opening 1a is formed that communicates the chamber with the outside.
Moreover, in the above-mentioned example, in order to operate the engagement piece 2,
An opening 3a is formed by cutting out the side edge of the housing 3.

<<Problems to be solved by the invention>> However, as mentioned above, there is no opening at the rear of the lamp.
a, 3a, this opening 1
There is a problem that insects and dust can enter the lamp chamber from a and 3a, interfering with the light distribution of the lamp and spoiling its aesthetic appearance. In particular, small insects that enter the lamp chamber may pass through the side of the inner lens that partitions the lamp chamber and reach the inner wall of the outer lens at the forefront, and if this outer lens is a prismless lens, it may attach to the inner wall. The small insects can be clearly seen from the outside.

<Means for Solving the Problems> In order to solve the above-mentioned problems, the vehicle lamp of the present invention has a lens body attached to the front opening of the housing, and a back cover attached to the rear surface of the housing to define a light chamber. In the vehicle lamp, the back cover has an opening formed near an inner wall of the housing, a regulating piece formed at an edge of the opening side of the outer surface of the back cover, and a regulating piece disposed on the inner surface of the back cover, the opening being formed near the inner wall of the housing. a sliding plate whose tip engages a protruding piece formed on the inner side edge of the housing and clamps the protruding piece between it and the side edge of the back cover; A pair of operating pieces protrudes from the opening to the outer surface of the back cover, engages with the edge of the opening, and is removable from the regulating piece by a knob operation, and the operating pieces are engaged with the regulating piece. The back cover is held in the housing by engaging the sliding plate with the projecting piece.

<<Operation>> The back cover is attached to the rear surface of the housing in a substantially airtight state, with the tip of the sliding plate engaging with the protruding piece of the housing when operated from the outside, and the opening being closed by the sliding plate. That will happen.

<<Example>> As shown in FIG.
1 and an inner lens 12 are attached to each other in a double structure, and a back cover 13 is attached to the rear surface of the housing 10 to define a lamp chamber, and a lamp bulb 14 is disposed within this lamp chamber.

The outer lens 11 is made of, for example, a colorless or light smoke-like transparent synthetic resin, and is a prismless lens with flat surfaces on both sides. This outer lens 11 has an annular leg portion 11 at the peripheral edge.
a, and the leg portion 11a is attached to the housing 1.
0, and is fixed to the housing 10 by an adhesive 15 such as hot melt that is injected into the groove 10a.

The inner lens 12 is made of, for example, a transparent synthetic resin having a predetermined lamp color, and has a Fresnel prism formed on its inner surface and a fisheye prism formed on its outer surface. This inner lens 12 is attached to the inner peripheral portion of the front surface of the housing 10 by high frequency welding or the like.

The back cover 13 is approximately plate-shaped made of synthetic resin or the like, and has one side (lower end in FIG. 1).
While hooked on one inner edge of the housing 10, operate the engagement mechanism provided on the other side (upper end in FIG. 1) to engage the other inner edge of the housing 10. Therefore, it is detachably held on the rear surface of the housing 10.

The engagement mechanism will be explained below. As shown in FIG. 2, this engagement mechanism includes a rectangular opening 17 formed near the inner wall of the housing 10 of the back cover 13, and a pair of rectangular openings 17 formed on the outer surface of the back cover 13 with this opening 17 in between. and a regulating piece 18 attached to the opening 17.
The engaging body 19 is positionally regulated by the engaging body 19.

The engaging body 19 is formed by integrally molding synthetic resin or the like, and includes a sliding plate 20 disposed on the inner surface of the back cover 13 and a protruding piece on the outer surface of the back cover 13 connected to the sliding plate 20. The device is equipped with a pair of operation pieces 21 that operate.

As shown in FIG. 3, the sliding plate 20 is slidably operated via the operating piece 21 along a frame-shaped protrusion 24 formed at the periphery of the opening 17 on the inner surface of the back cover 13. It comes into contact with and separates from the inner wall of the housing 10. The distal end of the sliding plate 20 facing the inner wall of the housing 10 is an engaging portion 22 bent into a substantially crank shape, and this engaging portion 22 is a protrusion formed on the inner edge of the housing 10. It is designed to fit inside the piece 23. As a result, the projecting piece 23 is held between the other side edge of the back cover 13 and the engaging part 22, as shown in FIG.

Further, each of the operation pieces 21 is bent in a substantially crank shape so that the tips thereof are expanded, and the bent portions are adapted to engage with both side edges of the opening 17 of the back cover 13. By this,
The sliding plate 20 is attached to the back cover 13 as described above.
It is slidably engaged and held on the inner surface.

Further, the regulating piece 18 extends approximately 2 times the opening 17.
They are placed in equally divided positions. Each of the operating pieces 21 is locked and position-regulated by the regulating piece 18 in the no-load state, and is contracted by a knob operation and moved beyond the regulating piece 18, as shown in FIG. It is becoming possible to do so.

In the above-mentioned engagement mechanism, the engagement piece 21 is positioned and held on the side edge side of the back cover 13 by the regulating piece 18, so that the sliding plate 20 is placed in the advanced position. The engaging portion 22 engages with the projecting piece portion 23 . As a result, the other side of the back cover 13 engages with the housing 10. In this state, the opening 17
is closed by the sliding plate 20 and the bent portion of the operating piece 21, and the rear surface of the housing 10 is closed by the back cover 1.
3 in a substantially airtight state.

Also, by operating the operating piece 21, the regulating piece 18
If the back cover 13 is detached further and the sliding plate 20 is retreated, the housing 1 on the other side of the back cover 13 will be removed.
0 can be released, and one side of the back cover 13 can be opened to the proximal end for bulb replacement or the like.

The present invention is not limited to the vehicular lamp equipped with the substantially colorless and transparent outer lens 11 described above, but can be widely applied to vehicular lamps in which other prismless lenses or the like are disposed on the front side.

<<Effects of the invention>> According to the invention, the back cover can be attached to the rear surface of the housing in a substantially sealed state, and it is possible to reliably prevent insects and dust from entering the lamp chamber from the rear surface of the housing. It is also possible to prevent light distribution from being obstructed by dust or the like and from deteriorating the aesthetic appearance.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the vehicle lamp according to the present invention, and FIG. 2 is an exploded perspective view showing an engagement mechanism for attaching the back cover of the vehicle lamp shown in FIG. 1 to the rear surface of the housing. 3 is an exploded perspective view showing the engagement mechanism shown in FIG. 2 from a different direction, and FIG. 4 is a cross-sectional view of the main part showing a state in which the side edge of the back cover is engaged and held by the housing by the engagement mechanism. 5 is a perspective view of the main part showing a state in which the operating piece of the engagement mechanism is detached from the regulating piece by a pinching operation, FIG. 6 is a sectional view showing an example of the prior art, and FIG. 7 is the prior art FIG. 3 is an enlarged perspective view showing an opening formed at the rear of the lamp. 10...Housing, 11...Outer lens,
12...Inner lens, 13...Back cover,
17... Opening, 18... Regulating piece, 20... Sliding plate, 21... Operating piece, 22... Engaging portion, 23...
Projection part.

Claims (1)

[Scope of utility model registration request] A vehicle lamp in which a lens body is attached to a front opening of a housing and a back cover is attached to a rear surface of the housing to define a light chamber, wherein the back cover has an opening formed near an inner wall of the housing and an outer surface of the back cover. A regulating piece formed on the edge of the opening side of the housing and a protruding piece disposed on the inner surface of the back cover to close the opening and whose tip engages with a protruding piece formed on the inner edge of the housing to push this protruding piece toward the back cover side. a sliding plate held between the edge and the sliding plate, which is connected to the sliding plate and protrudes from the opening to the outer surface of the back cover, engages with the edge of the opening, and engages and disengages with the regulating piece by a pinching operation; A vehicular lamp comprising a pair of freely movable operating pieces, the operating pieces are locked to a regulating piece, the sliding plate is engaged with a projecting piece, and a back cover is held in a housing. .