JPH08222009A - Lighting appliance for vehicle - Google Patents

Abstract

PURPOSE: To form a locking pawl without use of a slide mold by forming a rapping hole in a part corresponding to a pawl of the locking pawl in a lighting appliance for a vehicle in which the locking pawl for locking a part of a set spring for fixing a light source to a reflecting mirror is integrally formed with the reflecting mirror. CONSTITUTION: A headlamp 1 has reflecting mirror 19 made of synthetic resin in a lighting appliance space 4 partitioned with a lamp body 2 and a front lens 3. In order to fix an electric bulb 37 to a reflecting mirror 19 while the bulb 37 is elastically brought into contact with the rear end of the reflecting mirror 19 with a set spring 25, a locking pawl 31 for locking a locking part 28a of the set spring 25 is integrally formed with the reflecting mirror 19. A rapping hole 36 of a mold for forming a pawl 31a is formed in a part corresponding to the pawl 31a of the locking pawl 31 of the reflecting mirror 19, and the hole 36 is utilized as a ventilating hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a set spring for attaching a light source to a reflecting mirror in a state where the light source is elastically contacted with the reflecting mirror. In a vehicular lamp integrally formed with a mirror,
Molding of the locking claw without using a slide mold by forming a hole in the reflecting mirror corresponding to the claw part of the locking claw for removing the mold part that forms the claw part. It is intended to provide a new vehicular lamp capable of performing the above.

[0002]

2. Description of the Related Art A vehicular lamp configured to mount a light bulb on a reflecting mirror by using a set spring in order to position the light bulb inside the reflecting mirror through a light bulb mounting hole formed on the reflecting mirror made of synthetic resin. Are known.

FIG. 14 shows an example a of such a lamp.

In FIG. 14 (a), b is a synthetic resin lamp body, and the lamp body b and its front opening c
A reflecting mirror f made of synthetic resin is arranged in a lamp space e defined by a lens d that covers (the irradiation direction of the lamp is the front).

Reference numeral g is a bulb insertion hole formed in the rear wall of the lamp body b, and h is a bulb mounting hole formed in the rear end of the reflecting mirror f.

Reference numeral i denotes a light bulb, and its glass bulb j is positioned in the reflecting mirror f through the light bulb insertion hole g and the light bulb mounting hole h.

Reference numeral k denotes a flange of the light bulb i, which is fixed to the base 1 of the light bulb i.

Reference numerals m and m denote contact pieces (only one of which is shown in the drawing), and they project rearward from the rear end surface of the base portion i.

Reference numeral n denotes a set spring made of a wire spring material, which is used for attaching the light bulb i to the reflecting mirror f in a state where the flange k is pressed against the rear end surface of the reflecting mirror f by elastically contacting the base portion l. It is a member. A part of the set spring n is fixed to a mounting portion o projecting on the rear end of the reflecting mirror f by means of screws, and one end of the set spring n is projecting on the rear end face of the reflecting mirror f. It is adapted to be locked by the pawl p.

The locking claw p is integrally formed with the reflecting mirror f on the side opposite to the mounting portion o with the bulb mounting hole h sandwiched at the rear end of the reflecting mirror f, as shown in FIG. 14 (b). As shown in the drawing, the claw portion q is formed in a hook shape that faces the side (upward) and has a recess r on the side.

[0011]

By the way, in the above-described lamp a, the claw q of the locking claw p faces in a direction substantially orthogonal to the die cutting direction of the reflecting mirror f. However, there is a problem that a slide mold is required to form the locking claw p, which causes an increase in mold cost and an increase in cost of the reflecting mirror.

[0012]

In order to solve the above-mentioned problems, the vehicular lamp of the present invention has a light source arranged in a reflecting mirror made of synthetic resin, and is reflected in a state where the light source is elastically contacted with the reflecting mirror. A vehicular lamp having a set spring for attaching to a mirror, wherein a locking claw for locking a part of the set spring is formed integrally with the reflecting mirror. In the corresponding portion, a die-extracting hole of a die portion forming the claw portion is formed.

[0013]

Therefore, according to the present invention, when the mold of the reflecting mirror is opened, the mold part for forming the claw portion can be pulled out from the hole for die cutting, so that the locking claw can be used without using the slide die. Can be molded integrally with the reflecting mirror.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the vehicular lamp of the present invention will be described below with reference to the illustrated embodiments. In addition, the illustrated embodiment is one in which the present invention is applied to a vehicle headlight.

Reference numeral 1 denotes a headlight, and a lamp space 4 is defined by a lamp body 2 which is open to the front and a front lens 3 which covers the opening of the lamp body 2 from the front.

The lamp body 2 is made of synthetic resin and has a recess 2a which is open toward the front. A lens mounting portion 5 for mounting the front lens 3 is formed on the front opening edge, and the lens mounting portion 5 is formed with a mounting groove 5a that is open toward the front.

The lamp body 2 has two parts 2A and 2B.
Are connected to each other, and a reflection means for a traveling beam is arranged in a housing space 4a defined by a portion 2A and a portion of the front lens 3 corresponding thereto, and a portion 2B and a front surface corresponding to the portion 2B. Reflecting means for the passing beam is arranged in the accommodation space 4b defined by the lens 3 portion.

The rear wall 6 of the portion 2A is integrally formed with a cylindrical tubular portion 7 projecting rearward, and a protrusion projecting from the inner peripheral surface of the tubular portion 7 toward the center of the tubular portion 7. A large circular opening 9 is formed by the wall 8.

Further, a cylindrical tubular portion 11 projecting rearward is integrally formed on the rear wall 10 of the portion 2B, and is provided so as to project from the inner peripheral surface of the tubular portion 11 toward the center of the tubular portion 11. A large circular opening 13 is formed by the protruding wall 12.

The front lens 3 is formed by integrally forming a front surface portion 14 covering the front surface of the recess 2a of the lamp body 2 and a peripheral wall portion 15 protruding rearward from the peripheral edge of the front surface portion 14 with a synthetic resin. Then, the rear end portion 17 of the peripheral wall portion 15 is fitted into the installation groove 5a of the lamp body 2 through the sealant 16, and in that state, the leaf spring clips 18, 18 ,.
The front lens 3 is fixed to the lamp body 2 by sandwiching the rear end portion 17 of the peripheral wall portion 15 and the mounting portion 5 from the side by (see FIG. 1).

Reference numeral 19 is a reflecting mirror made of synthetic resin, and a reflecting portion 20 for a traveling beam and a reflecting portion 21 for a low beam are integrally formed. Although not shown, the reflecting mirror 19 is supported on the lamp body 2 by an aiming mechanism (not shown) so that it can be tilted vertically and horizontally in the lamp space 4.

The reflecting portion 20 is formed by integrally forming an effective reflecting portion 20a having a predetermined reflecting surface and a side surface portion 20b protruding forward from the peripheral edge of the effective reflecting portion 20a. Then, as shown in FIG. 7, a cylindrical portion 22 is provided so as to project rearward at a substantially central portion of the rear end portion of the effective reflection portion 20a, and a light bulb mounting hole 23 is formed in the cylindrical portion 22. (See FIGS. 5 and 6). The light bulb attachment hole 23 has a rectangular hole shape extending in the vertical direction, and a notch 23a extending continuously to the side is formed.

Reference numeral 24 is a hole for positioning the light bulb, which is formed beside the light bulb mounting hole 23.

The set spring 25 is formed by bending a wire spring material.
As shown in FIG.
Is composed of long side portions 27 and 28 and a connecting portion 29 that connects the long side portions 27 and 28. A bent portion 27a is formed by bending a part of the long side portion 27 in a V shape, and the other long side portion 28 is
A part thereof is bent in a V shape, and its end portion is bent in a hook shape when viewed from the back and side surfaces, thereby forming the locking portion 28a.

Reference numeral 30 is a mounting portion for mounting the set spring 25, and 31 is locking claws for locking the set spring 25. These are formed integrally with the reflecting portion 20 on both sides of the tubular portion 22. There is.

The mounting portion 30 is located on the right side of the tubular portion 22 when viewed from the back, and the mounting portion 30 has a pentagonal protrusion 30.
a, a protrusion 30b extending in parallel in the vertical direction at a predetermined distance from the left side of the protrusion 30a, and the protrusion 3
Projection walls 30c and 30d are formed above and below 0a and 30b, respectively, with a predetermined distance therebetween. That is,
A groove 32 is formed between the protruding portion 30a and the protruding portion 30b, a groove 33 is formed between the protruding portion 30b and the protruding wall 30c, and a groove 34 is formed between the protruding portion 30b and the protruding wall 30d. ing.
A screw hole 35 is formed substantially in the center of the protrusion 30a.

The hook-shaped locking claw 31 is located on the left side of the tubular portion 22 when viewed from the back side, and the claw portion 31 is provided.
a is facing upward. Then, the claw portion 31 of the reflecting portion 20
A hole 36 that also serves as a die-cutting hole and a heat radiation hole is formed in the portion corresponding to a. That is, when the reflecting mirror 19 is molded, the die-cutting direction is the front-rear direction, and therefore, when forming the claw portion 31a, the metal mold portion that forms this is formed into the hole 3.
Need to escape from 6. As a result, the locking claw 31 can be integrally molded with the reflecting mirror 19 without using a slide mold. Further, the hole 36 also has a role of a heat dissipation hole for discharging the air in the reflecting portion 20 which has been warmed by lighting the light bulb to the outside.

Reference numeral 37 is a light bulb for a traveling beam (see FIG. 2), and its glass bulb 37a has an opening 9 in the lamp body 2.
Is disposed in the reflecting portion 20 through the light bulb mounting hole 23. The base portion 38 of the light bulb 37 is provided with a flange 39 at a position slightly rearward from the middle. When mounting the light bulb 37 on the reflecting portion 20, first, while positioning the light bulb 37 in the light bulb mounting hole 23, the glass bulb 37
The front half of a and the base portion 38 is inserted into the bulb mounting hole 23, and the flange 39 is brought into contact with the rear surface of the reflecting portion 20.

The long side portion 2 of the set spring 25
The light bulb 37 may be attached to the reflecting portion 20 in a state where the flange 39 is pressed against the rear surface of the reflecting portion 20 by elastically contacting the rear end portion of the base portion 7 and 28. That is, FIG.
After engaging the connecting portion 29 with the groove 32 of the mounting portion 30 and engaging the portions of the long side portions 27, 28 near the connecting portion 29 with the grooves 33, 34 of the mounting portion 30, respectively, as shown in FIG. By screwing the mounting screw 40 into the screw hole 35 of the protrusion 30a of the mounting portion 30, the connecting portion 29 is prevented from coming off by the screw head, and the end of the locking portion 28a of the set spring 25 is locked by the locking claw. Lock at 31.

It should be noted that in the state in which the light bulb 37 is attached to the rear end portion of the reflecting portion 20, the base portion 38 of the light bulb 37 is shown in FIG.
As shown in FIG. 5, the light bulb mounting hole 23 is projected rearward, and the contact piece 41 is projected rearward from the rear end surface of the base portion 38.

The reflecting portion 21 is integrally formed with an effective reflecting portion 21a having a predetermined reflecting surface and a side surface portion 21b protruding forward from the peripheral edge of the effective reflecting portion 21a.

As shown in FIG. 7, a tubular portion 42 is provided so as to project rearward at a substantially central portion of the rear end portion of the effective reflection portion 21a, and a bulb mounting hole is provided in the tubular portion 42. 43 is formed (see FIGS. 5 and 6). Bulb mounting hole 43
Is an I-shaped hole extending in the vertical direction, and a notch 43a extending laterally is formed continuously from the I-shaped hole.

Reference numeral 44 is a hole for positioning the light bulb, which is formed beside the light bulb mounting hole 43.

The set spring 45 is formed by bending a wire spring material.
As shown in FIG.
Is composed of long side portions 47, 48 and a connecting portion 49 connecting the long side portions 47 and 48. A bent portion 47a is formed by bending a part of the long side portion 47 into a V-shape, and the other long side portion 48 is
A part thereof is bent in a V shape, and its end portion is bent in a hook shape when viewed from the back and side surfaces, thereby forming the locking portion 48a.

Reference numeral 50 denotes a mounting portion for mounting the set spring 45, and 51 denotes locking claws for locking the set spring 45, which are formed integrally with the reflecting portion 21 on both sides of the tubular portion 42. There is.

The mounting portion 50 is located on the left side of the cylindrical portion 42 when viewed from the rear, and the mounting portion 50 has a pentagonal protrusion 50a.
A protrusion 50b extending in parallel with the right side of the protrusion 50a at a predetermined interval in the vertical direction, and a protrusion 50b.
Projecting walls 50c and 50d are formed above and below a and 50b, respectively, with a predetermined distance therebetween. That is, the groove 52 is formed between the protrusion 50 a and the protrusion 50 b, the groove 53 is formed between the protrusion 50 b and the protrusion wall 50 c, and the protrusion 5 is formed.
A groove 54 is formed between 0b and the protruding wall 50d.
A screw hole 55 is formed substantially in the center of the protrusion 50a.

Further, the hook-shaped locking claw 51 is located on the right side of the tubular portion 42 when viewed from the back side, and the claw portion 51a thereof is provided.
Is facing downwards. Then, the claw portion 51a of the reflecting portion 21
In the part corresponding to the hole
6 is formed. That is, when the reflecting mirror 19 is molded, since the die-cutting direction is the front-back direction, the claw portion 5
When forming 1a, a part of the mold for forming
Need to escape from 6. As a result, the locking claw 51 can be integrally molded with the reflecting mirror 19 without using a slide mold. The hole 56 also has a role of a heat dissipation hole for discharging the air in the reflecting portion 21 heated by the lighting of the light bulb to the outside.

Reference numeral 57 denotes a light beam for a low beam (see FIG. 2), and its glass bulb 57a is arranged in the reflecting portion 21 from the opening 13 of the lamp body 2 through the light bulb mounting hole 43. The base part 58 of the light bulb 57 is provided with a flange 59 at a position slightly rearward from the middle. Light bulb 5
When attaching 7 to the reflecting portion 21, the bulb mounting hole 43
While positioning the bulb 57, the glass bulb 57a and the front half of the base 58 are inserted into the bulb mounting hole 43, and the flange 59 is brought into contact with the rear surface of the reflector 21.

The long side portion 4 of the set spring 45
The bulb 57 may be attached to the reflecting portion 21 in a state where the flange 59 is pressed against the rear surface of the reflecting portion 21 by elastically contacting the rear ends of the base portions 58 with the reference numerals 7, 48. That is, FIG.
After engaging the connecting portion 49 with the groove 52 of the mounting portion 50 and engaging the portions of the long side portions 47, 48 near the connecting portion 49 with the grooves 53, 54 of the mounting portion 50, respectively, as shown in FIG. By screwing the mounting screw 60 into the screw hole 55 of the protrusion 50a of the mounting portion 50, the screw head prevents the connecting portion 49 from coming off, and the end of the locking portion 48a of the set spring 45 is locked by the locking claw. Lock at 51.

As shown in FIG. 2, the light bulb 57 has a base portion 58 projecting rearward from the light bulb mounting hole 43 in a state where the light bulb 57 is attached to the rear end portion of the reflection portion 21. A contact piece 61 is projected rearward on the rear end surface.

Further, the upper surface portion 62 of the side surface portion 21b of the reflecting portion 21 is formed with steps 63, 63, ... At its front end portion (only one of which is shown in FIG. 4). An engagement hole 64a is formed in the bottom surface portion 64 of the side surface portion 21b (see FIG. 3).

Reference numeral 65 denotes an inner lens that covers the opening of the reflecting portion 21 and is made of a glass material or a synthetic resin. As shown in FIG. 3, the inner lens 65 is provided at its lower end with a protruding portion 65a protruding downward, and the protruding portion 65a is formed in the engaging hole 64 of the side surface portion 21b of the reflecting portion 21.
.. (only one of which is shown in the figure) is made of leaf springs, as shown in FIG. By hooking on the steps 63, 63, ... Of the upper surface portion 62, and sandwiching the upper edge portion of the inner lens 65 and the portion of the reflecting portion 21 near the front end of the upper surface portion 62 from the side, the inner lens 65 is It is adapted to be attached to the reflecting portion 21. In this way, the inner lens 6
The lamp chamber 67 is defined by 5 and the reflecting portion 21.

Reference numerals 68 and 68 'denote adapter members (see FIGS. 2 and 3), which are attached to the rear end portions of the reflecting portions 20 and 21, respectively. Since these adapter members have the same structure, only the member 68 relating to the passing beam light bulb 57 will be described, and the other member 68 ′ will be denoted by the same reference numerals as those assigned to the member 68. The description is omitted by adding.

The adapter member 68 has connector portions 69 and 69 into which the rear end portion of the contact piece 61 of the light bulb 57 and the base portion 58 are respectively fitted and inserted, and the connector portions 69 and 69.
The contact pieces 69a, 69a forming a part of the above are projected rearward from the rear end surface. The adapter member 68 is attached to the rear end portion of the reflecting portion 21 by means not shown so as to cover the portion of the base 58 near the rear end.

Reference numerals 70 and 70 'denote caps for holding the adapter member 68 (see FIGS. 2 and 3), which are attached to the rear ends of the portions 2A and 2B of the lamp body 2, respectively. Since the caps 70 and 70 'have the same structure, only the cap 70 relating to the low beam light bulb 57 will be described, and the other cap 70' is given to each portion by the reference numeral of the cap 70. The description will be omitted by giving the same reference numeral to.

The cap 70 comprises a socket cover 71 made of rubber and a lock ring 72 formed of synthetic resin in a ring shape.

The socket cover 71 has a holding portion 71a for holding the adapter member 68 and a body portion 71b attached to the lock ring 72, which are connected by a thin bellows portion. When attaching the cap 70 to the lamp body 2, first, the body portion 71b is attached to the lock ring 72, and then the front end portion of the lock ring 72 is fitted into the opening 13 of the lamp body 2 and the front end portion of the lock ring 72 is attached. The locking portions 72a, 72a, ... Formed in the above are respectively inserted into notches (not shown) formed continuously with the opening 13 of the lamp body 2, and then the lock ring 72 is rotated. As a result, the front end of the lock ring 72 is fitted in the opening 13 of the lamp body 2 and the cap 70 is attached to the rear end of the lamp body 2B.

In the headlight 1, however, the reflector 2
When forming the locking claws 31 and 51 on the 0 and 21, respectively, the locking claws 31 and 5 of the rear end portions of the reflecting portions 20 and 21 are formed.
By forming the die-cutting holes 36 and 56 in the portions corresponding to the one claw portions 31a and 51a, the reflecting mirror 19 can be molded without using a slide mold. That is, when the mold is opened, the mold parts for forming the claw portions 31a and 51a can be pulled out from the holes 36 and 56.
Then, these die-cutting holes 36 and 56 can be positively used as heat radiation holes. For example, through the hole 36 formed in the reflecting portion 20, the air warmed by the heat of the light bulb 37 in the reflecting portion 20 is exhausted to the outside of the reflecting portion 20,
The air warmed by the heat of the light bulb 57 in the lamp chamber 67 is exhausted to the outside of the lamp chamber 67 through the hole 56 formed in the reflecting portion 21 to reduce fogging in the lamp chamber 67 and disturbance of light distribution. The thermal deformation of the reflecting mirror 19 can be prevented.

[0049]

As is apparent from the above description, according to the present invention, the part of the reflecting mirror that corresponds to the claw portion of the locking claw is die-cut from the mold part that forms the claw portion. By forming the hole for the projection, when the mold of the reflecting mirror is opened, the mold part for forming the claw part can be pulled out from the hole for die cutting, so the locking claw can be reflected without using a slide mold. It can be molded integrally with the mirror. Then, by positively utilizing this die-cutting hole as a heat dissipation hole, the air warmed by the heat of the light source in the reflecting mirror is exhausted to the outside of the reflecting mirror, and the fogging of the lens and the disturbance of the light distribution, It is possible to prevent thermal deformation of the reflecting mirror.

[Brief description of drawings]

1 shows an example in which the present invention is applied to a vehicle headlight together with FIGS. 2 to 13, and this figure is a front view.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged cross-sectional view taken along the line IV-IV of FIG.

FIG. 5 shows a reflecting mirror according to the present invention together with FIGS. 6 to 9, and is a front view.

FIG. 6 is a rear view.

FIG. 7 is a plan view.

FIG. 8 is a side view.

FIG. 9 is a horizontal sectional view.

FIG. 10 is an enlarged rear view showing a rear end portion of a reflecting portion of the reflecting mirror relating to irradiation of a traveling beam and a set spring attached thereto.

FIG. 11 is an enlarged perspective view showing a rear end portion of a reflecting portion of the reflecting mirror relating to irradiation of a traveling beam and a set spring in a separated state.

FIG. 12 is an enlarged rear view showing a rear end portion of a reflecting portion of the reflecting mirror relating to irradiation of a low beam and a set spring attached thereto.

FIG. 13 is an enlarged perspective view showing a set spring and a rear end portion of a reflecting portion of the reflecting mirror relating to irradiation of a low beam.

FIG. 14 shows an example of a conventional vehicle lamp,
(A) is a horizontal sectional view, (b) is an enlarged sectional view taken along the line BB of (a).

[Explanation of symbols]

 1 Headlight (vehicle lamp) 2 Lamp body 19 Reflector 25, 45 Set spring 31, 51 Locking claws 31a, 51a Claws 36, 56 Holes 37, 57 Light bulb (light source)

Claims (1)

[Claims] 1. A light source is arranged in a reflecting mirror made of synthetic resin, and a set spring is provided for attaching the light source to the reflecting mirror in a state where the light source is in elastic contact with the reflecting mirror, and a part of the set spring is locked. In a vehicular lamp in which a locking claw for locking is integrally formed with a reflecting mirror, a hole for die cutting of a mold part forming the claw is formed in a part of the reflecting mirror corresponding to the claw of the locking claw. A vehicular lamp characterized by being formed with.