JPH10233103A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it easy to install a light source bulb and to reduce the space occupied exclusively by a plate spring member. SOLUTION: As a means to attach a light source bulb 4 to a holder part 13, a plate spring member 5 comprising a spring main body formed into a simple plate shape is used. As a result, when the elastic engaging part 53 of the spring main body is engaged with or disengaged from the engaging part 19 of the holder part 13 in which the light source bulb 4 has been set, the spring main body is not pressed against nor hooked to the light source bulb 4. Moreover. by rotating the spring main body and engaging the elastic engaging part 53 with the engaging part 19 while the elastic abutting part 52 of the spring main body is made to abut to the mounting flange part 44 of the light source bulb 4, the light source bulb 4 can be attached to the holder part 13, so that the plate spring member 5 is easy to handle. Thus, the light source bulb 4 is easy to install. Since the plate spring member 5 is comprised of the spring main body formed into a simple plate shape, the space occupied exclusively by the plate spring member 5 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as a fog lamp or a headlamp, in which a light source bulb is detachably attached to a reflector by a spring member. And vehicular lamps having a small exclusive space.

[0002]

2. Description of the Related Art FIG.
This will be described with reference to FIG. In this example, a reflector movable vehicle lamp will be described. In the figure,
The hatching is omitted in the reading of the drawings. A lamp chamber 101 is defined by the lamp housing 100 and the lens 200, and a reflector 300 is provided in the lamp chamber 101. The reflector 300 is mounted on the lamp housing 100 by a pivot bearing mechanism, an optical axis adjustment mechanism, and the like. (Not shown), it is attached so as to be rotatable and tiltable in the vertical direction or in the vertical and horizontal directions. A separate holder portion 301 is integrally fixed to the reflector 300. The light source bulb 400 includes a wire spring member 500 in the holder portion 301.
As a result, the light source bulb 400 is positioned at a predetermined position (the light source bulb 4
00 is disposed at a position near the focal point F of the reflection surface 302 of the reflector 300).

That is, the light source bulb 400 is provided with a mounting flange 402. As shown in FIG. 8, the holder 301 has a hollow cylindrical shape with one end open and the other end closed. A through hole 303 for inserting the light source bulb 400 into the lamp chamber 101 is provided on the closed end face of the holder portion 301, and a flange portion 304 is provided on the periphery of the through hole 303. The portion 304 is provided with a plurality of small hemispherical protrusions 305, three in this example being integrally provided. Also, this holder part 30
A T-shaped engagement groove 306 and a mounting portion 307 are provided opposite to each other at the edge of the opening end face of the opening. This mounting part 30
7, a wire spring member 500 is rotatably attached. Further, as shown in FIG. 8, the above-described wire spring member 500 is formed by bending a substantially circular shape and bending an intermediate portion thereof into a U-shape, and includes a mounted portion 501 mounted on the mounting portion 307, A photographing part 502 formed by bending both ends into a small circle, and the photographing part 502 and the attached part 5
It comprises a pressing portion 503 formed by bending a portion between the portions 01 and 01 into a U-shape, and an engaging portion 504 provided between the pressing portion 503 and the photographing portion 502.

Next, how to mount the light source bulb 400 will be described. First, as shown in the state of the two-dot chain line in FIG. 7 (or the state in FIG.
Opened from 01. In this state of the wire spring member 500, the light source bulb 400 is inserted into the lamp chamber 101 from the rear opening 102 of the lamp housing 100 and the through hole 303 of the reflector 300, and the mounting flange 402 of the light source bulb 400 is connected to the reflector 300. It is brought into contact with the projection 305. Then, take two shooting units 502 with your finger etc.
The wire spring member 500 is rotated around the mounting portion 501 (the mounting portion 307) as a fulcrum to close the holder portion 301, and the pressing portion 5
03 is indicated by a broken line in FIG.
0, while pressing against the mounting collar 402 against the spring force of the wire spring member 500, narrows the space between the two photographing portions 502 also against the spring force of the wire spring member 500, and 504
Into the engagement groove 306. The engaging portion 504 is formed in the engaging groove 30.
6. Release the finger or the like from the photographing unit 502 when it has been inserted into 6. Then, the engagement portion 504 is engaged with the engagement groove 306, so that the wire spring member 500 is attached to the attachment portion 307 (attached portion 501), the engagement groove 306 (engagement portion 504), and the attachment flange 402 (pressing). Part 503) and elastically deforms,
The mounting collar portion 402 is pressed by the convex portion 305 by the spring force, and the light source bulb 400 is mounted on the holder portion 301 of the reflector 300. Further, the engaging portion 50
The light source bulb 400 can be removed from the holder part 301 of the reflector 300 by removing the wire spring 4 from the engagement groove 306 and opening the wire spring member 500 from the holder part 301.

In FIG. 7, reference numeral 403 denotes the holder 30.
1 is a colored cap fixed to 1 and covering the light source bulb 400. The coloring cap 403 converts light from the light source bulb 400 into a predetermined color (for example, amber (yellow)).
Color). Reference numeral 600 denotes a rubber waterproof cover interposed between the rear opening 102 of the lamp housing 100 and the base 404 outside the mounting flange 402 of the light source bulb 400. Reference numeral 601 denotes an attachment cap for detachably attaching the waterproof cover 600 to the lamp housing 100.

[0006]

However, the above-mentioned conventional vehicle lamp uses a wire spring member 500 formed by bending a complicated shape as means for attaching the light source bulb 400 to the holder portion 301. Therefore, when the wire spring member 500 is engaged with the holder portion 301 on which the light source bulb 400 is set, the wire spring member 500 hits or catches on the base 404 of the light source bulb 400. Moreover, in order to engage the wire spring member 500 with the holder portion 301, two pressings are performed while pressing the pressing portion 503 against the mounting flange portion 402 of the light source bulb 400 against the spring force of the wire spring member 500. The wire spring member 50 is also provided between the portions 502.
0, and the engaging portion 504 is
06, the handling of the wire spring member 500 is troublesome. Thus, the mounting of the light source bulb is complicated.

Further, since the wire spring member 500 is formed by bending into a complicated shape, the space occupied by the wire spring member 500 is large. When hit (see Figure 7)
Problem.

An object of the present invention is to provide a vehicular lamp in which a light source bulb can be easily mounted and a space occupied by a leaf spring member is small.

[0009]

According to the present invention, an engaging portion is provided on a holder portion of a reflector, while a leaf spring member has a plurality of peaks and valleys alternately formed in a wave shape. And a spring body having a spring force in the plate thickness direction,
An elastic contact portion and an elastic engaging portion are provided at peaks and valleys of the spring main body, and a height dimension between the elastic contact portion and the elastic engaging portion is equal to that of the holder portion and the engaging portion. The height is slightly larger than the height between them.

As a result, in a state where the elastic contact portion is in contact with the mounting flange portion of the light source bulb, the spring body is rotated around the plate thickness direction so that the elastic engaging portion is elastically engaged with the engaging portion. By doing so, the elastic contact portion presses the mounting flange portion of the light source bulb against the holder portion, and the light source bulb is detachably attached to the reflector.

As described above, the vehicle lamp of the present invention uses a leaf spring member composed of a spring body formed in a simple plate shape as means for attaching the light source bulb to the holder. When the elastic engaging portion of the spring main body is engaged with the engaging portion of the holder portion on which the light source bulb is set, the spring main body does not hit or catch on the light source bulb. Moreover, in a state where the elastic contact portion is in contact with the mounting flange portion of the light source bulb, the spring body is rotated around the plate thickness direction to engage the elastic engaging portion with the engaging portion of the holder portion. Accordingly, the light source bulb can be attached to the holder portion, so that the leaf spring member can be easily handled. Therefore, attachment of the light source bulb is easy.

Further, since the leaf spring member is composed of a spring body having a simple leaf shape, the space occupied by the leaf spring member can be small.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicular lamp according to the present invention will be described below with reference to FIGS. This example describes a vehicle lamp in which a lamp housing and a reflector are integrated. In the drawings, hatching is omitted for the sake of reading the drawings. A lamp chamber 10 is defined by the lamp housing 1 and the lens 2, and a reflection surface 11 is provided on an inner surface of the lamp housing 1, and the lamp housing 1 and the reflector are integrated.

A circular through hole 12 for inserting a light source bulb 4 to be described later into the lamp chamber 10 is provided at the rear center of the lamp housing 1. A cylindrical holder 13 is provided on the periphery of the through hole 12. The holder 13 is provided with a plurality of small hemispherical projections 14, three in this example. The holder 13 is provided with a square projection 15 and a semicircular projection 16 for preventing the light source bulb 4 from being erroneously assembled. further,
Outside the holder portion 13, a double cylindrical tube portion 17 is provided.
And 18 are integrally protruded. A plurality of L-shaped engaging portions 19 are provided on the end surface of the inner cylindrical portion 17 described above.
In this example, two are provided.

In FIG. 1, reference numeral 4 denotes a light source bulb. The light source bulb 4 includes a glass bulb 41 in which a filament 40 is sealed, a mounting flange 44 provided with a square recess 42 and a semicircular recess 43, and a base 45.

In FIG. 1, reference numeral 5 denotes a leaf spring member. This leaf spring member 5 utilizes a so-called wave washer. That is, a spring body 50 having a circular through hole 51 provided at the center of a disk is subjected to press working or the like, and a plurality of spring parts 50, in this example, two peaks and two valleys are formed in this example. It is formed in a wave shape alternately and at substantially equal intervals. The spring main body 50 is in a plate thickness direction (a direction indicated by a dashed line in FIG. 5 and a vertical direction of a peak portion and a valley portion).
Has a spring force.

The valley (or peak) of the spring body 50
Is provided with an elastic contact portion 52 that elastically contacts the mounting flange portion 44 of the light source bulb 4 and presses the mounting flange portion 44 against the convex portion 14 of the holder portion 13. The light source bulb 4 is detachably attached to the lamp housing 1 on the outer peripheral edge of the peak (or valley) of the spring body 50 by elastically engaging with the engaging portion 19 of the holder 13. The elastic engaging portion 53 is integrally formed to protrude outward. Further, a valley (or a hill) of the spring body 50
In the elastic contact portion 52, a photographing portion 54 is integrally provided so as to protrude toward the peak (valley side).

The height T between the lower surface (or upper surface) of the elastic contact portion 52 of the leaf spring member 5 and the upper surface (or lower surface) of the elastic engaging portion 53 is determined by the holder portion 13.
Apex of the convex portion 14 and the lower surface (or upper surface) of the engaging portion 19
Is slightly larger than the height t between them.

In FIG. 1, reference numeral 46 denotes a shade provided in the lamp room 10. Reference numeral 6 denotes a rubber waterproof cover interposed between the outer cylindrical portion 18 of the lamp housing 1 and a base 45 outside the mounting flange 44 of the light source bulb 4. Further, reference numeral 60 denotes an attachment cap for detachably attaching the above-described waterproof cover 6 to the outer cylindrical portion 18 of the lamp housing 1.

The vehicular lamp according to the present invention in this embodiment has the above-described configuration, and a method of mounting the light source bulb will be described below. First, the glass bulb 41 side of the light source bulb 4 is moved from the through hole 12 of the lamp housing 1 to the lamp room 10.
And the mounting flange 44 of the light source bulb 4 is brought into contact with the projection 14 of the holder 13. At this time, the square convex portion 15 and the semicircular convex portion 16 on the holder portion 13 side and the square concave portion 42 and the semicircular concave portion 4 on the mounting flange portion 44 side of the light source bulb 4 are provided.
In combination with 3, the light source bulb 4 is prevented from being erroneously assembled.

Next, the spring body 50 (leaf spring member 5) is externally fitted to the base 45 of the light source bulb 4, and the elastic contact portion 52 of the spring body 50 is brought into contact with the mounting flange 44 of the light source bulb 4. Then, the photographing portion 54 of the spring body 50 is photographed with a finger or the like, and the spring body 50 is rotated around the plate thickness direction in the direction of the arrow in FIG. Is elastically engaged with the engaging portion 19 of the holder portion 13.

At this time, the height T between the lower surface (or upper surface) of the elastic contact portion 52 of the spring body 50 and the upper surface (or lower surface) of the elastic engaging portion 53 is set to the holder portion 13.
Apex of the convex portion 14 and the lower surface (or upper surface) of the engaging portion 19
Is slightly larger than the height t between them. As a result, the elastic engaging portion 53 of the spring body 50 is
9, the elastic contact portion 52 elastically contacts the mounting flange portion 44 of the light source bulb 4 in the direction of the arrow in FIG. 4
4 is pressed against the projection 14 of the holder 13. On the other hand, the elastic engaging portion 53 of the spring body 50 is
Elastically in the direction of the arrow in FIG. The light source bulb 4 is disposed at a predetermined position in the lamp chamber 10 (position where the filament 40 of the light source bulb 4 is located near the focal point F of the reflection surface 11) via the spring body 50, and the lamp housing It is detachably attached to the first holder 13.

When the elastic engaging portion 53 of the spring body 50 is elastically engaged with the engaging portion 19 of the holder portion 13, the elastic engaging portion 53 is bent in the direction opposite to the arrow in FIG. ,
The elastic engaging portion 53 is easily elastically engaged with the engaging portion 19.

The photographing portion 54 of the spring body 50 is photographed with a finger or the like, and the spring body 50 is rotated around the thickness direction in the direction opposite to the arrow in FIG. Joint 5
The light source bulb 4 can be removed from the holder section 13 of the lamp housing 1 by releasing the spring body 50 from the holder section 13 (light source bulb 4) by releasing the engagement body 3 from the engagement section 19 of the holder section 13.

As described above, the vehicular lamp according to the present invention in this embodiment has a leaf spring constituted by a simple plate-shaped spring body 50 as means for attaching the light source bulb 4 to the holder portion 13. Since the member 5 is used, when the elastic engaging portion 53 of the spring main body 50 is engaged with the engaging portion 19 of the holder portion 13 in which the light source bulb 4 is set, the spring main body 50 No hits or snags. Moreover, in a state where the elastic contact portion 52 is in contact with the mounting flange portion 44 of the light source bulb 4, the spring body 50 is rotated around the plate thickness direction so that the elastic engaging portion 53 is engaged with the holder portion 13. Since the light source bulb 4 can be attached to the holder section 13 by engaging with the section 19, handling of the leaf spring member 5 is simple.
Therefore, attachment of the light source bulb 4 is easy.

Further, since the leaf spring member 5 is composed of the spring main body 50 having a simple plate shape, the exclusive space of the leaf spring member 5 can be small. For example, the leaf spring member 5 does not hit the waterproof cover 6.

Further, since the leaf spring member 5 is attached to the holder 13 by the elasticity of the spring main body 50, there is no need for a fixture for attaching the wire spring member to the holder unlike the wire spring member. The number of parts is small, the structure is simple, and the cost is reduced.

In the above-described embodiment, since the photographing section 54 is provided on the spring body 50, the photographing section 54 is photographed with a finger or the like, so that the spring body 50 is moved around the plate thickness direction. It can be easily rotated. This photographing section 54 is not always necessary.

Further, in the above-described embodiment, a description has been given of the vehicle lamp in which the lamp housing and the reflector are integrated. However, the vehicle lamp of the present invention includes the lamp housing and the reflector as in the above-described conventional example. However, the present invention can also be applied to a separate vehicle lamp. In this case, the holder and the engaging portion are provided on a reflector separate from the lamp housing.

[0030]

As is apparent from the above description, the vehicular lamp of the present invention uses a leaf spring member formed of a simple plate-shaped spring body as a means for attaching the light source bulb to the holder. Therefore, when the elastic engaging portion of the spring main body is engaged with the engaging portion of the holder portion on which the light source bulb is set, the spring main body does not hit or catch on the light source bulb. Moreover, in a state where the elastic contact portion is in contact with the mounting flange portion of the light source bulb, the spring body is rotated around the plate thickness direction to engage the elastic engaging portion with the engaging portion of the holder portion. Accordingly, the light source bulb can be attached to the holder portion, so that the leaf spring member can be easily handled. Therefore, attachment of the light source bulb is easy.

Further, since the leaf spring member is constituted by a spring main body having a simple leaf shape, the space occupied by the leaf spring member can be small.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a vehicular lamp of the present invention.

FIG. 2 is an exploded perspective view of a holder portion of the lamp housing and a light source bulb.

FIG. 3 is a partial perspective view showing a state in which an elastic engaging portion of a leaf spring member elastically engages with an engaging portion of the holder portion.

FIG. 4 is an explanatory diagram showing a height dimension between an upper surface of a convex portion of a holder portion and a lower surface of an engaging portion.

FIG. 5 is a perspective view of a leaf spring member.

6A is a front view of the leaf spring member, FIG. 6B is a plan view of the leaf spring member, and FIG. 6C is a side view of the leaf spring member.

FIG. 7 is a sectional view showing a conventional vehicular lamp.

FIG. 8 is a perspective view of a holder and a wire spring member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp housing, 10 ... Light room, 11 ... Reflective surface, 1
2 through-hole, 13 ... holder part, 14 ... convex part, 15 ... square convex part, 16 ... semicircular convex part, 17 ... inner cylinder part, 18 ... outer cylinder part,
19 ... engaging part, 4 ... light source bulb, 40 ... filament,
41: glass bulb, 42: square recess, 43: semicircular recess, 44: mounting flange, 45: base, 46: shade, 5
... leaf spring member, 50 ... spring body, 51 ... through-hole, 52 ... elastic contact part, 53 ... elastic engagement part, 54 ... shooting part, 6 ... waterproof cover, 60 ... mounting cap.

Claims (1)

[Claims] 1. A lamp chamber is defined by a lamp housing and a lens, a reflector is provided in the lamp housing, a through hole is provided in the reflector, and a periphery of the through hole is provided on a periphery of the through hole. In a vehicle lighting device, a holder portion is provided, a mounting flange portion of a light source bulb is detachably attached to the holder portion by a leaf spring member, and the light source bulb is disposed in the lamp room. An engaging part is provided on the holder part of the reflector, and the leaf spring member has a plurality of peaks and valleys formed alternately in a wave shape and has a spring force in a plate thickness direction. The spring body is provided with an elastic contact portion and an elastic engaging portion at peaks and valleys, and a height dimension between the elastic contact portion and the elastic engaging portion. Is between the holder portion and the engagement portion. The spring main body is rotated around the plate thickness direction in a state where the elastic contact portion is in contact with the mounting flange portion of the light source bulb, and the elastic engagement portion is slightly larger than the height dimension. The light source bulb is removably attached to the reflector by elastically engaging the engagement part so that the elastic contact part presses the mounting flange of the light source bulb against the holder. Vehicle lighting device.