JPH0883501A - Lighting fixture for vehicle - Google Patents

Abstract

PURPOSE: To provide a low cost lighting fixture facilitating the attachment of a shade thereto, and allowing no adhesion of cut chips to a reflector and a reflection face. CONSTITUTION: A groove 306 is provided in a reflector 300 or a lamp housing 1, and an elastic engaging portion 605 is provided in a shade 600. The elastic engaging portion 605 of the shade 600 is elastically engaged with the groove 306 of the reflector 300 or the lamp housing 1 so that the reflector 300 can easily be fitted to the reflector 300 or the lamp housing 1 using no screw. Since no screw is used, there is no chance the cut chips of the selftapping screws, adhere to the reflector 300 and the reflection face 303 of the lamp housing 1, and the number of the part items and a cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is, for example, a fog lamp, a headlamp, or the like, and is equipped with a shade for blocking light from a light source bulb and incident on an invalid reflection surface of a reflection surface of a reflector or a lamp housing. In particular, it is possible to attach the shade firmly and easily without using a screw or the like, and there is no possibility that shavings or the like will adhere to the reflector or reflection surface, further reducing the cost. The present invention relates to a vehicular lamp capable of

[0002]

2. Description of the Related Art A conventional vehicular lamp of this type will be described below with reference to FIG. In this example, a vehicular lamp of a type (so-called reflector movable type) in which a reflector provided in a lamp chamber has a reflecting function will be described. In the figure, 1 is a lamp housing made of, for example, a synthetic resin.
Openings 10 are provided on the front and rear of the lamp housing 1.
And 11 are provided respectively. A seal recess 12 is provided in the front opening 10. Further, for example, an annular first engaging groove 13 and second annular engaging groove 15 are formed in the rear peripheral portion of the rear opening 11.
Are provided respectively.

In the figure, 2 is a lens. This lens 2 has a dish shape, and a sealing leg 20 is formed around the entire circumference of the opening.
Are provided integrally. The seal leg 20 of the lens 2 is sealed in the seal recess 12 of the lamp housing 1 with hot melt or the like 21 to define the lamp chamber 14.

In the figure, 3 is a reflector. The reflector 3 is made of, for example, a thermosetting resin (BMC) or the like. The reflector 3 is disposed in the lamp chamber 14 by a pivot bearing or the like (not shown) so as to be rotatable and tiltable. Openings 30 and 31 are provided on the front and rear of the reflector 3, respectively. In addition, a reflective surface 32, which is, for example, a paraboloid of revolution, is provided on the front side of the rear portion of the reflector 3. A hole (blind hole) 39 for screwing a screw 38 for attaching a shade 6 to be described later is provided in an upper portion of a front-side peripheral edge portion of a rear opening portion 31 of the reflector 3. Further, a groove 33 for mounting a mounting spring 5 described later and a hole 35 for screwing a screw 34 are provided in the lower portion of the rear side peripheral portion of the rear opening 31 of the reflector 3. Further, a plurality of (for example, three) recesses 36 and a plurality of (for example, two) engagement grooves 360 are provided in the rear side peripheral portion of the rear opening 31 of the reflector 3, respectively.

In the figure, 4 is a light source bulb. The light source bulb 4 includes a glass tube 40 enclosing a filament (not shown), a cylindrical base 41 integrally provided on the rear portion of the glass tube 40, and a rear end of the base 41 protruding rearward. The terminal 43 provided, the flange 42 provided in the middle portion of the base 41, and a plurality of pieces provided at the peripheral edge of the flange 42 (for example, three corresponding to the recess 36 of the reflector 3).
Engaging claws 44 of. Light source bulb 4 thus formed
The glass tube 40 of the lamp housing 1 at the rear opening 1
1 and the rear opening 31 of the reflector 3 to the reflector 3
Of the light source bulb 4 and the three engaging claws 44 of the light source bulb 4 are engaged with the three recesses 36 of the reflector 3, respectively, and the two engaging portions of the mounting spring 5 described later are inserted. 52 are engaged with the two engaging grooves 360 of the reflector 3, respectively, and the light source bulb 4 thereof is detachably attached to the reflector 3.

In the figure, 5 is a mounting spring.
The mounting spring 5 includes an intermediate U-shaped mounting portion 50, and an elastic contact portion 51 that has a V shape when viewed from both sides of the mounting portion 50 and a bow shape when viewed from the side. And a plurality of dog-shaped engaging portions 52 (for example, two corresponding to the baton groove 360 of the reflector 3) when viewed from the back surface of the intermediate portion of the elastic contact portion 51, and the elastic contact portion. It is composed of an operation section 53 at the tip of 51. The mounting portion 50 of the mounting spring 5 is attached to the mounting groove 3 of the reflector 3.
3 and then the mounting plate 54 on it,
The screw 34 is attached to the reflector 3 via a mounting plate 54.
The mounting spring 5 is rotatably mounted on the reflector 6 by being screwed into the hole 35. The elastic contact portion 51 of the mounting spring 5 is elastically contacted with the back surface of the collar portion 42 of the light source bulb 4, and the engaging portion 52 of the mounting spring 5 is engaged with the engaging groove 360 of the reflector 3. As a result, the light source bulb 4 can be detachably attached to the reflector 3.

In the figure, 6 is a shade. The shade 6 is, for example, a cylindrical blocking portion 60 that blocks the light from the light source bulb 4 that is incident on the ineffective reflection surface of the reflector 3, and a mounting portion 61 integrally provided from the blocking portion 60. Consists of. Mounting part 6 of this shade 6
1 is set on the reflector 3, the screw 38 is screwed into the blind hole 39 of the shade 3 via the mounting portion 61, the shade 6 is mounted on the reflector 3, and the blocking portion 60 of the shade 6 is arranged at a predetermined position. Set up.

In the figure, 7 is a so-called rubber cover waterproof cover. The waterproof cover 7 includes a boss portion 70 having an annular irregular surface on its inner peripheral surface, a bellows-like elastic portion 71 integrally extending rearward and outward from the outer periphery of the boss portion 70, and its elastic portion. The plate-shaped abutting portion 72 integrally extends outward from the outer periphery of the abutment 71, and the seal portion 74 integrally extends from the outer periphery of the abutting portion 72 to the front at a substantially right angle. Abutment 72
Similarly, a plurality of triangular beads (not shown) serving as seal portions are integrally provided on the front surface and the rear surface, for example, two on the front surface side and one on the rear surface side. The seal portion 7 of the waterproof cover 7
4 is engaged with the first engaging groove 13 of the lamp housing 1, and the boss portion 70 of the waterproof cover 7 is externally fitted to the base 41 of the light source bulb 4.

In the figure, 8 is a resin mounting cap. The mounting cap 8 has a thin hollow cylindrical shape, and has a through hole 80 in the central portion and an engaging portion 81 in the peripheral portion. The engaging portion 81 of the mounting cap 8 is engaged with the second engaging groove 15 of the lamp housing 1 to detachably attach the mounting cap 8 to the edge of the rear opening 11 of the lamp housing 1, and The abutting portion 72 of the waterproof cover 7 and the triangular bead are pressed against the edge of the opening 80 of the mounting cap 8 and the edge of the rear opening 11 of the lamp housing 1 so that water can be removed from the rear opening 11 of the lamp housing 1. To prevent the light from entering the lamp chamber 14.

Thus, when the light source bulb 4 is turned on, the light from the light source bulb 4 is reflected by the reflecting surface 32 of the reflector 3, and the reflected light is emitted to the outside through the lens 2 in a predetermined light distribution pattern. On the other hand, the light from the light source bulb 4 which is incident on the ineffective reflection surface of the reflector 3 is blocked by the blocking section 60 of the shade 6, so there is no possibility of irradiating glare light. Also, the engaging portion 5 of the mounting spring 5
By removing 2 from the engaging groove 360 of the reflector 3,
The light source bulb 4 can be removed from the reflector 3.

[0011]

However, in the above-mentioned conventional vehicular lamp, since the mounting portion 61 of the shade 6 is mounted to the peripheral edge portion of the front opening side of the rear opening 31 of the reflector 3 with the screw 38, the shade. The mounting of 6 is troublesome due to the screwing operation of the screw 38 and the like. Further, when the screw 38 is screwed into the blind hole 39 of the reflector 3 by self-tapping, shavings may occur, and the shavings may adhere to the reflecting surface 32 on the front surface side of the reflector 3. Further, since the screw 38 for attaching the shade 6 is required, there are problems such as an increase in the number of parts and cost.

In the above-mentioned example, the vehicular lamp of the type in which the reflector 3 provided in the lamp chamber 14 has a reflecting function (so-called reflector movable type) has been described, but the reflecting surface is directly provided in the lamp housing. The above-described problem similarly occurs in a vehicular lamp of a type having a reflection function (so-called movable lamp unit type).

It is an object of the present invention to securely and easily attach a shade without using a screw or the like, and there is no fear that shavings or the like will be attached to a reflector or a reflecting surface, further reducing the cost. It is to provide a vehicular lamp capable of performing the above.

[0014]

The present invention is characterized in that the reflector is provided with a groove and the shade is provided with an elastic engaging portion.

Further, the present invention is characterized in that a groove is provided in the lamp housing and an elastic engaging portion is provided in the shade.

[0016]

According to the present invention, the shade can be attached to the reflector or the lamp housing without using the screw by elastically engaging the elastic engaging portion of the shade with the groove of the reflector or the lamp housing. As a result, the operation of screwing in the screw is not necessary, and the work of attaching the shade is simplified. Further, since the screw is not used, there is no fear that shavings will be generated by self-tapping of the screw and adhere to the reflector or the reflecting surface of the lamp housing. Furthermore, since no screw is used, the number of parts and cost can be reduced accordingly.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Two examples of embodiments of the vehicular lamp of the present invention will be described below with reference to FIGS. 1 to 3
Shows a first embodiment of the vehicular lamp of the present invention. In this example, a vehicular lamp of a type (so-called reflector movable type) in which a reflector provided in a lamp chamber has a reflecting function will be described. In the figure, the same symbols as in FIG. 5 indicate the same components.
In the figure, 16 is a rear opening 1 of the lamp housing 1.
1 is an engaging groove provided on the rear portion and the outer peripheral edge portion.

In the figure, 300 is a reflector.
This reflector 300 is made of, for example, a thermosetting resin (BM
C) etc. This reflector 300 is attached to the lamp chamber 14
A pivot bearing or the like (not shown) is provided therein so as to be rotatable and tiltable. Openings 301 and 302 are provided on the front and the rear of the reflector 300, respectively. In addition, on the front side of the rear portion of the reflector 3, for example, a reflecting surface 3 that is a paraboloid of revolution.
03 is provided. The rear opening 30 of this reflector 300
2, the fitting portion 304 and the contact portion 3 on the rear and outer peripheral portions.
05 are provided respectively. An annular groove 306, for example, is provided in the peripheral portion on the front surface side of the rear opening 302 of the reflector 300.

In the figure, reference numeral 45 is a base 4 of the light source bulb 4.
1 is a connector portion provided at the rear portion. This connector part 4
Reference numeral 5 is for connecting to a connector (not shown) on the power source side so that it can be electrically and mechanically disconnected.

In the figure, reference numeral 600 is a shade. As shown in FIGS. 2 and 3, the shade 600 blocks the light from the light source bulb 4 and blocks light that is incident on the ineffective reflection surface of the reflector 300.
02 and the light from the light source bulb 4 to the reflector 3
00, an opening 603 which is incident on the reflecting surface 303, mounting portions 604 and 605 for mounting the shade 600 on the reflector 300, and a coupling portion 606 for coupling the mounting portion 604 and the blocking portion 602. The blocking portion includes a hemispherical or dome-shaped front portion 601 and a cylindrical rear portion 602. The attachment portion includes a ring portion 604 on the front side and an elastic engagement portion 605 on the rear side. A plurality of elastic engaging portions 605 are provided, for example, 16 radially around the entire periphery of the rear peripheral portion of the ring portion 604. The elastic engaging portion 605 is formed by bending the rear portion side to the front portion side in a substantially U shape.

The plurality of elastic engaging portions 605 of the shade 600 are press-fitted into the grooves 306 of the reflector 300 to be elastically engaged, the shade 600 is attached to the reflector 300, and the blocking portions 601 and 6 of the shade 600 are attached.
02 is arranged at a predetermined position.

At this time, in the vehicular lamp of the present invention, since the shade 600 can be attached to the reflector 300 without using a screw, the operation of screwing the screw is unnecessary, and the work of attaching the shade 600 to the reflector 300 is unnecessary. It will be easy. Further, since the screw is not used, there is no possibility that shavings will be generated by self-tapping of the screw and adhere to the reflecting surface 303 of the reflector 300. Furthermore, since no screw is used, the number of parts and cost can be reduced accordingly.

Particularly, in this embodiment, the shade 600 is formed in the annular groove 306 of the reflector 300 over the entire circumference.
Since the plurality of elastic engaging portions 605 are elastically engaged with each other, the shade 600 can be firmly attached to the reflector 300.
In addition, even if the shade 600 is thermally expanded by the light emitted from the light source bulb 4, the plurality of elastic engaging portions 60 of the shade 600 are expanded.
The outer edge of 5 is the annular groove 306 of the reflector 300.
Since the outer edge of the shade is pressed with a stronger force, the shade 600 can be more firmly attached to the reflector 300. Further, a plurality of elastic engaging portions 6 arranged circumferentially of the shade 600 in the annular groove 306 of the reflector 300.
Since 05 is press-fitted, it serves as a guide for attaching the shade 600 to the reflector 300, and the attaching work is further facilitated.

In the figure, 700 is a waterproof cover.
This waterproof cover 700 is provided with a first cover provided on the edge of the central through hole.
It is composed of a seal portion 701, an elastic portion 702 integrally provided from the first seal portion 701, and a second seal portion 702 integrally provided from the elastic portion 703. This waterproof cover 700
The first seal part 701 of the lamp cover 14 is brought into contact with the contact part 305 of the reflector 300, and the second seal part 702 of the waterproof cover 700 is engaged with the engagement part 16 of the lamp housing 1 to make the lamp chamber 14 Waterproof inside.

In the figure, reference numeral 800 is a mounting cap. This mounting cap 800 has a through hole 80 provided at the center.
1 and an engaging portion 802 provided on the outer peripheral edge portion. The engaging portion 802 of the mounting cap 800 is attached to the reflector 3
The light source bulb 4 is detachably attached to the reflector 300 by engaging with the engaging portion 304 of 00.
Attach the first seal portion 701 of the waterproof cover 700 to the reflector 3
00 to contact the contact portion 305.

Thus, when the light source bulb 4 is turned on, the light from the light source bulb 4 is emitted from the opening 60 of the shade 600.
Reflected by the reflecting surface 303 of the reflector 300 via 3,
The reflected light is emitted to the outside in a predetermined light distribution pattern through a lens (not shown). On the other hand, the light from the light source bulb 4 which is incident on the ineffective reflection surface of the reflector 300 is blocked by the blocking units 601 and 602 of the shade 600, so there is no possibility of irradiating glare light.

As described above, in the vehicular lamp of the present invention in this embodiment, the shade can be firmly and easily attached without using a screw or the like, and shavings or the like adhere to the reflector or the reflecting surface. There is no risk of this occurring, and the cost can be further reduced.

FIG. 4 is a partial cross-sectional view of a main part showing a second embodiment of the vehicular lamp of the present invention. In this example, a vehicular lamp of the type in which a reflecting surface is directly provided on the lamp housing and the lamp housing has a reflecting function (so-called movable lamp unit type) will be described. In the figure, the same reference numerals as those in FIGS. 1 to 3 and 5 indicate the same components. In the figure,
Reference numeral 100 denotes a lamp housing made of synthetic resin, for example.
Openings 101 and 102 are provided on the front and rear of the lamp housing 100, respectively. Its front opening 1
The seal recess 103 is provided at 01. Also, the rear opening 1
An engagement groove 104 is provided on the rear peripheral edge of the first portion. A reflective surface 105, which is, for example, a paraboloid of revolution, is directly provided on the front side of the rear portion of the lamp housing 100. Further, for example, an annular groove 106 is provided in the peripheral portion on the front surface side of the rear opening 102 of the lamp housing 100. A plurality of elastic engaging portions 605 of the shade 600 are provided in the groove 106 of the lamp housing 100.
Is pressed and elastically engaged to attach the shade 600 to the lamp housing 100. This embodiment can achieve the same effects as those of the first embodiment described above.

[0029]

As is apparent from the above, in the vehicular lamp of the present invention, the shade can be firmly and easily attached without using a screw or the like, and a reflector or a reflecting surface can be removed. There is no risk of adhesion and the cost can be further reduced.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an essential part showing a first embodiment of a vehicular lamp of the present invention.

FIG. 2 is a plan view of a shade.

FIG. 3 is a front view of a shade.

FIG. 4 is a partial cross-sectional view of an essential part showing a second embodiment of the vehicular lamp of the present invention.

FIG. 5 is a vertical sectional view showing a conventional vehicle lamp.

[Explanation of symbols]

1, 100 ... Lamp housing, 14 ... Lamp room, 105 ...
Reflective surface, 106 ... Groove, 2 ... Lens, 300 ... Reflector, 303 ... Reflective surface, 306 ... Groove, 4 ... Light source bulb, 6
00 ... Shade, 601, 602 ... Blocking portion, 603 ... Opening portion, 604 ... Mounting portion, 605 ... Elastic engaging portion, 606 ...
Connection part, 700 ... waterproof cover, 800 ... mounting cap.

Claims (2)

[Claims] 1. A lamp chamber defined by a lamp housing and a lens, and a light source bulb disposed in the lamp chamber,
A reflector that is disposed in the lamp chamber and reflects light from the light source bulb toward the lens side; and light from the light source bulb that is attached to the reflector and is incident on an invalid reflection surface of the reflector. A shade for blocking light, and a vehicle lamp provided with the same, wherein the reflector is provided with a groove, and the shade is elastically engaged with the groove to attach the shade to the reflector. A vehicular lamp that is provided with. 2. A lamp chamber defined by a lamp housing and a lens, a light source bulb disposed in the lamp chamber, and light from the light source bulb provided on an inner surface of the lamp housing to the lens side. A lamp surface for a vehicle, comprising: a reflecting surface for reflecting light; and a shade, which is attached to the lamp housing and blocks light from the light source bulb and entering an ineffective reflecting surface of the reflecting surface, A groove is provided in the housing, and an elastic engagement portion is provided in the shade so that the shade is attached to the lamp housing by elastically engaging the groove.