KR100449391B1 - Vehicle lamp - Google Patents

Abstract

An object of the present invention is to improve the appearance aesthetics of a lamp when the bulb socket is attached to a reflector or the like, and to further downsize the bulb socket.

The bulb socket 4 is provided with a cylindrical socket body 41 and a coupling groove 42 inclined from the front end face to the rear end portion on the outer circumferential surface of the socket body 41. The reflector 2 has a socket mounting tube portion 22 protruding toward the rear from the reflecting surface 21, and a coupling protrusion projecting in the inner diameter direction on the inner circumferential surface of the socket mounting tube portion 22 to be coupled to the coupling groove 42 ( 23 and a blocking protrusion 24 for closing the front end of the engaging groove 42. The light bulb socket 4 is supported by the reflector 2 by engagement of the engaging groove 42 with the engaging projection 23 and the blocking projection 24. Since the front end of the engaging groove 42 is blocked by the blocking projection 24, the front end where the engaging groove 42 is cut off is not exposed to the front side of the reflector 2, thereby improving aesthetics. It is not necessary to form a flange or a bayonet piece in the socket body, so that the diameter of the bulb socket is not increased and miniaturization is realized.

Description

Car Lamps {VEHICLE LAMP}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle lamp having a structure of supporting a light bulb by using a light bulb socket on a lamp main body, a reflector, etc. (hereinafter, collectively referred to as a "reflector"). It is about.

In lamps for automobiles such as automobiles, the bulb is attached by a light bulb socket detachable from the reflector so that the light bulb mounted on the reflector can be replaced. However, since the bulb socket is detachable from the reflector, a bayonet structure has conventionally been used. Is being used. 7 is a perspective view of an example of a conventional bayonet structure. The bulb socket 7 has a socket body 71 in which a contact electrode 75 is built in and an opening 72 for bulb support for supporting the base portion 51 of the bulb 5 is opened. (71) The bayonet fragment 73 protrudes in the outer diameter direction in multiple parts of the circumferential surface. In addition, a large diameter flange 74 provided with the spring property in the axial direction is formed at a position apart from the bayonet piece 73 by the dimension of the plate thickness of the reflector 2, which will be described later, in the tubular direction. have. On the other hand, the reflector 8 to which the bulb socket 7 is mounted is opened with a circular bulb mounting hole 81 through which the socket body 71 of the bulb socket 7 can be inserted. A cutting groove 82 through which the bayonet piece 73 can be inserted is formed.

When attaching this bulb socket 7 to the reflector 8, as shown in sectional view in FIG. 8A, the socket main body 71 of the bulb socket 7 is inserted into the socket mounting hole 81 on the rear side of the reflector 8; ), And the bayonet piece 73 is inserted through the cutout groove 82 to bring the flange 74 into contact with the rear surface of the reflector 8. Then, the bulb socket 7 is rotated by a predetermined angle in the axle direction, so that the opening edge of the socket mounting hole 81 of the reflector 8 enters between the bayonet piece 73 and the flange 74 to open the opening edge. The additional clamping state is brought into place, and the electric bulb socket 7 is attached to the reflector 8 by this clamping force.

In such a conventional bulb socket mounting structure, several bayonet pieces 73 protrude from the circumferential surface of the socket body 71 of the bulb socket 7 so that the bulb socket 7 can be attached to the reflector 8. At that time, as shown in the front view in FIG. 8B, a plurality of bayonet pieces 73 are exposed to the periphery of the socket body 71 on the reflecting surface on the front side of the reflector 8. . Therefore, the reflecting surface 8a of the reflector 8 around the bulb socket 7 is hidden by these bayonet pieces 73, and the reflecting surface 8a does not exist in the cutout 82 portion. In addition, since the portion 71a in which the socket main body 71 is recessed is located at a position where the socket main body 71 is retracted from the front end face of the socket main body 71, when the lamp is viewed from the front direction, there is little light reflection in these portions. The part is seen as a dark part (dot display part), which causes a lack of aesthetics of the lamp. Moreover, since the reflection surface 8a of the reflector 8 does not function as a reflection surface in the area | region of the socket mounting hole 81 which mounts the bulb socket 7, the reflection efficiency of the reflector 8 will become low by that much. Is inevitable. In addition, since it is necessary to form the larger-sized bayonet 73 and the flange 74 in the socket body 71 than this, the diameter dimension of the whole light bulb socket 7 becomes large, and miniaturization becomes difficult.

Moreover, conventionally, as shown in sectional drawing in FIG. 9A, the socket mounting cylinder part 83 made by recessing a part of the back surface of the reflector 8 to cylindrical container shape is formed, and it is provided in the back surface of this socket mounting cylinder part 83. As shown in FIG. A structure is also proposed in which the above-described bulb socket 7 is mounted by installing the socket mounting hole 81 and the cutting groove 82 in the same manner as shown in FIG. However, in this structure, since the inner diameter of the socket mounting tube portion 83 needs to be formed larger than the outer diameter of the bayonet piece 73, when the lamp is viewed from the front side, as shown in Fig. 9B, the bulb socket The dark part (point display part) by the clearance gap between the socket mounting cylinder part 83 and the socket main body 71 arises in the circumference | surroundings of (7), and it becomes a factor that the aesthetics of a lamp falls. Moreover, also in this structure, since the reflecting surface 8a of the reflector 8 does not function as a reflecting surface in the area | region of the socket mounting cylinder part 83 which mounts the bulb socket 7, the reflector 8 by that much The reflection efficiency of becomes low.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle lamp which suppresses the appearance deterioration of the lamp by suppressing the occurrence of dark portions when the bulb socket is attached to the reflector or the like. Another object of the present invention is to provide a vehicle lamp which realizes miniaturization of the bulb socket, in particular, small diameter.

1 is a cross-sectional view in the plane direction of the lamp of the present invention.

FIG. 2 is a partially exploded perspective view of the main part of the lamp of FIG. 1. FIG.

FIG. 3 is an exploded perspective view of a part of the lamp of FIG. 1 viewed from the back direction. FIG.

4 is a front view, a side view, and a rear view of the bulb socket.

5 is a schematic diagram illustrating a mounting operation of the bulb socket.

It is a schematic perspective view of a bulb socket mounting state, and a front view of a reflector.

7 is an exploded perspective view of an example of a conventional bulb socket mounting structure.

8 is a cross-sectional view of the bulb socket mounting structure of FIG. 7 and a front view of the reflector in an attached state.

9 is a sectional view of another conventional bulb socket mounting structure and a front view of a reflector in an attached state.

<Description of the symbols for the main parts of the drawings>

1: car lamp

2: reflector

3: lens

4: bulb socket

5: light bulb

21: reflective surface

22: socket mounting tube

23: engaging projection

24: occlusion protrusion

41: socket body

42: combined groove

421 front end

422 rear end

423: locking protrusion

44: seal ring

The present invention relates to a vehicle lamp having a light bulb socket to a reflector having a reflecting surface, wherein the light bulb socket is formed on a cylindrical socket body and an outer circumferential surface of the socket body to form a front end face of the socket body. And a coupling groove inclined toward the rear end portion, the reflector having a socket mounting tube portion having an inner diameter substantially the same as the outer diameter of the socket body projecting toward the rear, and a rear portion of the socket mounting tube portion. Engaging projections protruding in the inner circumferential surface of the inner circumferential surface thereof to engage the engaging grooves, and closing projections protruding in the inner circumferential direction of the front circumference of the front end of the socket-mounted tubular portion to block the front end of the engaging grooves. Equipped. Here, when the bulb socket is mounted on the reflector, it is preferable that the front end face of the socket main body is located in substantially the same plane as the front end face of the closing projection. Moreover, it is preferable that the seal ring which waterproofs and contacts with the inner surface of a socket mounting cylinder part is attached to the outer peripheral surface of a socket main body.

According to the present invention, the bulb socket is supported by the reflector by the coupling of the coupling groove with the coupling protrusion and the blocking protrusion in the state where the bulb socket is inserted into the socket mounting tube. At the same time, since the front end of the engaging groove is blocked by the blocking projection, the front end of the engaging groove cut out in the socket body is not exposed to the front side of the reflector, and therefore it is not darkened, thereby improving aesthetics. In addition, the socket body does not need to form a flange or a bayonet piece, and the diameter dimension of the bulb socket is not increased, thereby miniaturization.

Next, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a sectional view in a planar direction showing the overall configuration of a vehicular lamp 1 to which the present invention is applied. The vehicular lamp 1 is constituted as a reflecting surface 21 by a reflecting film such as an aluminum film, and is almost A resin molded reflector 2 capable of mounting a light bulb socket 4 supporting a light bulb (bulb) 5 at the center, and a lens 3 mounted at the front opening 2a of the reflector 2 Equipped. The lens 3 has a seal leg 31 at its periphery, and the seal leg 31 is inserted into a seal groove 25 provided at the periphery of the reflector 2 to the sealant 30. It is fixed by.

2 is an exploded perspective view of the reflector 2, the bulb socket 4, and the bulb 5, and FIG. 3 is a partially exploded perspective view seen from the rear side. In this embodiment, the bulb 5 is a so-called wedge base bulb in which an electrode 52 electrically connected to a built-in filament is provided in a base portion 51 having a shape near to a flat shape. The reflector 2 is integrally formed with a cylindrical socket-mounting cylinder portion 22 protruding toward the rear surface. In addition, the bulb socket 4 has an outer diameter dimension substantially the same as the inner diameter dimension of the socket-mounted cylinder portion 22, and a socket body 41 having a cylindrical shape having a length substantially the same as the cylindrical dimension of the socket-mounted cylinder portion 22. Have

4A, 4B and 4C are front, side and back views of the bulb socket, and inserting and supporting the base portion 51 of the bulb 5 in the front end face 401 of the socket body 41. An elongated light bulb support opening 402 is provided, and the base portion 51 of the light bulb 5 is inserted and supported inside. In addition, a pair of contact electrodes 403 are arranged side by side in the bulb support opening 402 so that the electrode 52 of the bulb 5 inserted into the bulb support opening 402 may be inserted into the bulb 52. The connection is made. In addition, a pair of coupling members 404 are provided between the contact electrodes 403 for holding the light bulb 5 by engaging with the convex portion 53 provided in the base portion 51 of the light bulb 5. . The rear end face 411 of the socket main body 41 is provided with a pair of operation members 412 used to operate the socket main body 41 in the cylindrical circumferential direction, standing up along the radial direction. A pair of cord tubular portions 413 for protruding the cord 414 connected to the contact electrode 403 is formed between 412.

Moreover, the outer peripheral surface of two circumferential directions opposing the radial direction of the said socket main body 41 is opened in the front end surface 401 of the socket main body 41 in the state which cut out a part of the circumference, and the socket main body 41 is carried out. Spiral engaging grooves 42 are formed, respectively, extending in an inclined state with respect to the cylindrical axis direction of and terminated at a position near the rear end face 411 of the socket body 41. The front end 421 in which the engaging groove 42 is opened is formed with a vertical surface 421a and the other side as a tapered surface 421b so that the groove width is slightly larger. In addition, the rear end portion 422 of the end side of the coupling groove 42 has a shape close to a circle, and in the vicinity of the rear end portion 422, an inner surface of the groove protrudes inward to reduce the groove width dimension of the portion. One locking projection 423 is formed. In addition, a circular groove 43 is formed on the outer circumferential surface between the rear end face 411 of the socket body 41 and the barrel axial direction between the rear end portion 422 of the coupling groove 42 over the entire circumference, and the circular groove Inside the seal 43, a waterproof seal ring 44 is fitted.

On the other hand, the two circumferences of the inner circumferential surface of the rear end side of the socket-mounted cylinder portion 22, here diameter and length dimensions that can enter into the engaging groove 42 of the socket body 41 at positions opposite to the radial direction. A pair of engaging projections 23 having a cylindrical shape is formed to protrude in the inner diameter direction. In addition, at the position opposite to the radial direction of two circumferences of the inner circumferential surface of the front end side of the socket-mounted cylinder portion 22, the closing projection 24 having a dimension that can enter the front end 421 of the engaging groove 42 is the inner diameter. It is formed to protrude in the direction. The obstruction protrusion 24 is formed in an inverted trapezoidal shape in which one side is a vertical surface 24a and the other side is formed as a tapered surface 24b so that the width dimension gradually decreases from the front end face 24c toward the rear. Here, the positional relationship between the coupling protrusion 23 and the closing protrusion 24 corresponds to the position of the rear end 422 and the front end 421 of the coupling groove 42 provided in the socket body 41. The relationship is set. Moreover, the front end surface 24c of the said obstruction protrusion 24 is formed so that it may become substantially the same plane as the reflecting surface 21 of the said reflector 2, and it is comprised as a part of the reflecting surface 21, and light It is formed to reflect.

In the vehicle lamp of the above-described configuration, when attaching the bulb socket 4 to the reflector 2, the bulb 5 base portion 51 is first inserted into the bulb support opening 402 of the bulb socket 4. Support the light bulb (5). Since this support structure is the same as the bulb socket so far, detailed description is abbreviate | omitted. Then, first, as shown in Fig. 5A, the bulb socket 4 is inserted into the socket mounting cylinder 22 on the rear side of the reflector 2. At this time, the front end 421 of each engaging groove 42 of the socket body 41 is positioned in the pair of engaging projections 23 in the socket-mounting cylinder portion 22, so that the bulb socket 4 is slightly socket-mounted. It is pushed into the cylinder part 22, and both engagement protrusions 23 enter into the front end part 421 of the engagement groove 42. As shown in FIG. Then, when the socket body 41 is axially rotated in the clockwise direction in the same figure using the operation member 412, as shown in FIG. 5B, the socket body (s) by sliding contact between the engaging groove 42 and the engaging projection 23 is formed. 41 is entered into the socket-mounting cylinder portion 22 while moving in a threaded manner, that is, being rotated in the axial circumferential direction. Then, as shown in FIG. 5C, after the engaging projection 23 enters the front of the rear end 422 of the engaging groove 42, the socket body 41 is further screwed, as shown in FIG. 5D. The engaging projection 23 rides over the locking projection 423 and reaches the rear end 422 so that the engaging projection 23 is held in the rear end 422 by the locking projection 423. In the locked state, the socket body 41 is not easily detached from the socket-mounting cylinder portion 22, and the mounting of the bulb socket 4 is completed.

As described above, the mounting of the bulb socket 4 is completed, and at the same time, as shown in FIG. 5D and a schematic perspective view in FIG. 6A, the closing projection 24 is formed in the front end 421 of the coupling groove 42. Is entered, and the front end 421 of the engaging groove 42 is blocked because the vertical projections 24a, 421a and the tapered surfaces 24b, 421b of the occlusion protrusion 24 and the front end 421 are in contact with each other. do. Accordingly, the bulb socket 4 is supported by the blocking protrusion 24 at the front end 421 of the pair of coupling grooves 42 and by the coupling protrusion 23 at the rear end 422. Since it is supported, it is supported by four places in total, and is mounted stably in the socket mounting cylinder part 22. As shown in FIG. In addition, as in the conventional bayonet structure, it is not necessary to provide a large flange having a diameter dimension in the socket body, so that the bulb socket can be reduced in size by reducing the outer diameter dimension of the socket body.

At the same time, the front end 421 of the engaging groove 42 is blocked by the blocking protrusion 24 so that the front of the socket main body 41 when the reflector 2 is viewed from the front side as shown in FIG. The front end 421 of the engaging groove 42 cut in the end face 401 is covered and hidden by the obstruction protrusion 24, so that the front end 421 of the engaging groove 42 is formed of the reflector 2. The part of the front side, i.e., the reflective surface 21, does not appear dark, and the aesthetics of the reflector 2 to the lamp is improved. In particular, in this embodiment, the front end face 24c of the obstruction protrusion 24 is located in substantially the same plane as the front end face 401 of the socket body 41, and furthermore, the front end face 24c is formed of the reflector 2. Since it is formed as the reflecting surface similar to the reflecting surface 21, aesthetics can be heightened further. That is, as shown in the form of a dot in FIG. 6B, an area of a very small gap between the inner circumferential surface of the socket mounting tube portion 22 and the outer circumferential surface of the socket body 41 is only dark, and the other region is a reflective surface. Looks as bright as

On the other hand, the gap between the inner circumferential surface of the socket mounting tube portion 22 and the outer circumferential surface of the socket body 41 inserted therein is sealed in the circular groove 43 of the outer circumferential surface of the socket body 41. It is sealed by and the waterproof effect of the said gap is attained. Further, by designing the engaging projection 23 and the blocking projection 24 formed on the inner circumferential surface of the socket-mounted cylinder portion 22 to be in different positions in the circumferential direction, a slider can be used during molding by the mold of the reflector 2. Since the coupling groove 42 can be pulled out by a metal mold | die in the radial direction of a socket body also in the bulb socket 4, it does not need to use the slider for shaping the bulb support opening 402 like conventionally. Besides, it is not necessary to use a new slider by employing the present structure, making it possible to easily form the reflector 2 and the bulb socket 4 and to manufacture at low cost.

Here, in the above embodiment, an example in which two coupling grooves are provided in the bulb socket has been described, but three or more coupling grooves may be provided depending on the diameter dimension of the bulb socket. The shape of the engaging projection and the closed projection provided on the socket mounting tube portion is not limited to the shape of the above embodiment but may be changed as appropriate. Moreover, it goes without saying that a flange may be provided at the rear end of the socket body, and the seal ring may be held on the flange to achieve waterproofing between the rear end of the socket mounting tube portion.

In the above embodiment, the present invention is applied to a vehicle lamp having a lens attached to the reflector. However, the lamp chamber is constituted by a lamp main body and a lens, so that the reflector is built into the lamp compartment. It is also possible to apply the invention.

As described above, the light bulb socket includes a cylindrical socket body and a coupling groove inclined toward the rear end portion at the front end face on the outer circumferential surface of the socket body, and the reflector includes a socket body protruding rearward from the reflective surface. It is provided with a socket mounting tube portion having an inner diameter substantially the same as the outer diameter, and a protrusion formed in the inner circumferential direction on the inner circumferential surface of the socket mounting tube portion, and an engaging protrusion capable of engaging the engaging groove and a closing protrusion for closing the front end of the engaging groove. Since the bulb socket is supported by the reflector by the coupling groove, the coupling protrusion and the blocking protrusion in the state where the bulb socket is inserted into the socket mounting tube portion, the front end of the coupling groove is blocked by the blocking protrusion. The open front end of the groove is not exposed to the front side of the reflector, so that the lamp is And improves the appearance as viewed from the, also, the socket body can be obtained an effect in that the flange or it is not necessary to form a net bayo piece, because the diameter of the bulb socket increase miniaturization is realized.

Claims (3)

A lamp for a vehicle configured to support a light bulb by using a light bulb socket on a reflector having a reflecting surface, wherein the light bulb socket is formed on a cylindrical socket body and an outer circumferential surface of the socket body to face the rear end portion from the front end surface of the socket body. An inclined coupling groove, wherein the reflector is formed to protrude in an inner diameter direction on an inner circumferential surface near the rear portion of the socket mounting tube portion having an inner diameter dimension substantially the same as the outer diameter of the socket body projecting toward the rear side; And a coupling protrusion capable of engaging the coupling groove, and a blocking protrusion protruding in the inner diameter direction on the inner circumferential surface of the front end of the socket mounting tube portion to close the front end of the coupling groove. The vehicle lamp according to claim 1, wherein when the bulb socket is mounted on the reflector, the front end face of the socket main body is located in substantially the same plane as the front end face of the closure projection. The vehicle lamp according to claim 1 or 2, wherein a seal ring for sealing water is inserted into an outer circumferential surface of the socket main body by elastic contact with an inner surface of the socket mounting tube portion.