JP2000357408A - Vehicular light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular light having great light shielding effects between respective integrated lenses and of low manufacturing costs for the integrated lens. SOLUTION: Two lenses 2 and 3 are integrated by the magnetic body welding method through an opaque magnetic body 4. Consequently, the opaque magnetic body 4 in the junction part of the two lenses 2 and 3 can surely prevent the light of one lamp from leaking to the other lamp and light shielding effects between the respective integrated lenses 2 and 3 are great. In addition, the lenses 2 and 3 are integrated by the magnetic body welding method through the opaque magnetic body 4 so that the strength of the junction part of the two lenses 2 and 3 can be obtained sufficiently. Therefore, a junction-recessed part is unnecessary to form and there is no need to increase a die in size, to take time due to complex die design or manufacture or to increase a molding device in size. Furthermore, the molding device such as a conventional vehicular light is unnecessary. Thus, the manufacturing costs for the integrated lenses 2 and 3 are inexpensive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear combination lamp or the like, in which a plurality of lamps having different functions are integrally combined, for a vehicle in which a plurality of lenses made of resin are integrated. The present invention relates to a lighting device, and more particularly to a vehicle lighting device having a large light shielding effect between integrated lenses and a low manufacturing cost of the integrated lens.

[0002]

2. Description of the Related Art A vehicle lamp of this type will be described below with reference to FIGS. This example describes a rear combination lamp of an automobile in which a rear fog lamp and a tail stop lamp having different functions are integrally combined. The illustrated rear combination lamp RC is mounted on the left and right sides of the rear of the vehicle C, and is formed by integrally combining an upper rear fog lamp FL and a lower tail stop lamp SL. That is, the rear combination lamp RC is composed of a single lamp housing 1, a plurality of resin members, in this example, two lenses 2, 3, and the lamp housing 1 and the two lenses 2, 3. A plurality of defined light sources, in this example, two light chambers 22 and 33, and a plurality of light source bulbs 21 and 33 respectively disposed in the two light chambers 22 and 33, in this example, two light source bulbs 21, 31.

[0003] The lens 2 of the above-mentioned rear fog lamp FL
Is a thermoplastic resin, for example, having a basic thickness of 1.5 to 5.0.
mm (or 1.5 to 5.5 mm) of a colorless and transparent acrylic resin.
The L lens 3 is made of a thermoplastic resin, for example, a red transparent acrylic resin having a basic thickness of 1.5 to 5.0 mm (or 1.5 to 5.5 mm). The two lenses 2 and 3 are integrated by multi-color molding, in this example, two-color molding or insert molding. Sealing legs 20 and 30 are provided integrally at the edges of the integrated lenses 2 and 3, while a sealing recess 11 is provided at the opening edge of the lamp housing 1. . The seal legs 20 and 30 are fixed to the seal recess 11 via the seal material 13. Further, the lamp housing 1 is integrally provided with a partition wall (light shielding wall) 12. The front end of the partition wall 12 faces the joint of the integrated lenses 2 and 3 described above.

When the light source bulb 21 of the rear fog lamp FL is turned on, light L2 from the light source bulb 21 is emitted.
Is radiated to the outside through a colorless and transparent lens 2 as white light in a predetermined light distribution pattern. On the other hand, when the light source bulb 31 of the tail stop lamp SL is turned on, the light L3 from the light source bulb 31 passes through the red transparent lens 3 and is emitted outside as a red light in a predetermined light distribution pattern.

[0005]

In the above-described vehicle lamp, the rear fog lamp FL and the tail stop lamp S
Since L has a different function, it is important to prevent light from one lamp from leaking into the other lamp. However, the above-mentioned conventional vehicle lamp has two lenses 2,
Since 3 is simply integrated by two-color molding or insert molding, light from one lamp may leak to the other lamp. For example, as shown in FIG. 6, light L2 from the light source bulb 21 of the rear fog lamp FL leaks to the tail stop lamp SL side through the junction of the two lenses 2 and 3, while the light source bulb 31 of the tail stop lamp SL L3 may leak to the rear fog lamp FL through the joint between the two lenses 2 and 3. Therefore, as shown in FIG. 7, it is conceivable to increase the thickness of the front end of the partition wall 120 to prevent the light of one lamp from leaking to the other lamp. However, in this case, since the thickness of the partition wall 120 is increased, sink marks or the like may occur in the partition wall 120.

Further, since the above-mentioned conventional vehicle lamp is formed by two-color molding or insert molding of the two lenses 2 and 3, the strength of the joint portion between the two lenses 2 and 3 is obtained. For this purpose, for example, as shown in FIG. 8, joint projections 24 and 34 may be provided integrally at the joint between the two lenses 2 and 3. However, in this case, the joining protrusions 24, 34
In order to form the mold, the size of the mold is increased, the design and manufacture of the mold are troublesome and time-consuming, and the size of the molding machine is increased. In addition, the above-described conventional vehicle lamp is formed by two-color molding or insert molding of the two lenses 2 and 3, and therefore requires a molding machine.

As described above, the conventional vehicular lamp has problems in the light shielding effect between the integrated lenses and the manufacturing cost of the integrated lens.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular lamp having a large light-shielding effect between the integrated lenses and a low manufacturing cost of the integrated lenses.

[0009]

In order to achieve the above object, the present invention is characterized in that a plurality of lenses are integrated by a magnetic material welding method via an opaque magnetic material. As a result, the opaque magnetic material interposed at the joint portion of the plurality of lenses can reliably prevent the light of one lamp from leaking to the other lamp. Is big. In addition, since the plurality of lenses are integrated by the magnetic material welding method via the magnetic material, the strength of the joint portion between the plurality of lenses can be sufficiently obtained. For this reason, it is not necessary to provide a joining convex part, and accordingly, the mold is not enlarged, the design and manufacture of the mold is troublesome, it takes time, and the molding machine is not enlarged. In addition, a molding machine such as a conventional vehicle lamp is unnecessary. Thus, the manufacturing cost of the integrated lens is low.

[0010]

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
An example in which a rear fog lamp and a tail stop lamp are used in a rear combination lamp of an automobile in combination will be described. In the drawing, the same reference numerals as those in FIGS. 4 to 8 denote the same components.

In FIG. 1, reference numeral 4 denotes an opaque magnetic material for integrating two lenses 2 and 3 by a magnetic material welding method.
The magnetic body 4 is made of a resin compatible with the acrylic resin of the two lenses 2 and 3 as a base material, and the base material contains a magnetic metal. The magnetic body 4 is set between the lens 2 of the rear fog lamp FL and the lens 3 of the tail stop lamp SL, and the two lenses 2 and 3 are connected via the magnetic body 4 to a magnetic material welding method (secondary processing is performed). (High frequency dielectric heating).

The vehicular lamp according to the present invention in this embodiment has the above-described structure, and is shown in FIG. 1 by an opaque magnetic body 4 interposed at the joint between the two lenses 2 and 3. Thus, the light L2 from the light source bulb 21 of the rear fog lamp FL is directed to the tail stop lamp SL side, and the light source bulb 31 of the tail stop lamp SL is
From the rear fog lamp FL, it is possible to reliably prevent the light L3 from leaking from the rear fog lamp FL side.
The light-shielding effect between the three is large. Also, two lenses 2, 3
Are integrated by the magnetic material welding method via the magnetic material 4, so that the strength of the joint between the two lenses 2, 3 can be sufficiently obtained. For this reason, it is not necessary to provide a joining convex part, and accordingly, the mold is not enlarged, the design and manufacture of the mold is troublesome, it takes time, and the molding machine is not enlarged. In addition, a molding machine such as a conventional vehicle lamp is unnecessary. Thus, the manufacturing cost of the integrated lenses 2 and 3 is low.

In the above-described embodiment, a rear combination lamp R of an automobile in which a rear fog lamp FL and a tail stop lamp SL are combined.
Although the example used for C has been described, the present invention relates to other vehicle lamps, for example, a rear combination lamp in which a turn signal lamp and a tail stop lamp are combined (in this case, the lens is an amber color on the side of the turn signal lamp). And a red lens on the side of the tail stop lamp are integrated), or a vehicle lamp in which a plurality of lamps having different functions such as a front combination lamp are combined.

[0014]

As is apparent from the above description, the vehicular lamp of the present invention can ensure that the light of one lamp leaks to the other lamp by the opaque magnetic material interposed at the joint of the plurality of lenses. Therefore, the light shielding effect between the integrated lenses is large. In addition, since the plurality of lenses are integrated by the magnetic material welding method via the magnetic material, the strength of the joint portion between the plurality of lenses can be sufficiently obtained. For this reason, it is not necessary to provide a joining convex part, and accordingly, the mold is not enlarged, the design and manufacture of the mold is troublesome, it takes time, and the molding machine is not enlarged. In addition, a molding machine such as a conventional vehicle lamp is unnecessary. Thus, the manufacturing cost of the integrated lens is low.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view showing one embodiment of a vehicular lamp of the present invention, and is a sectional view taken along line II in FIG.

FIG. 2 is an exploded front view of two lenses and a magnetic body.

FIG. 3 is a front view of the vehicular lamp of the present invention.

FIG. 4 is a front view of a conventional vehicle lamp.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is an enlarged sectional view of a portion VI in FIG. 5;

FIG. 7 is a partially enlarged cross-sectional view showing a state where the thickness of the partition wall is increased.

FIG. 8 is a partially enlarged cross-sectional view showing a state in which a joining protrusion is provided.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp housing, 10 ... Opening part, 11 ... Seal concave part, 12, 120 ... Partition wall, 13 ... Seal material, 2, 3
... Lens, 22, 33 ... Light room, 21, 31 ... Light source bulb, 20, 30 ... Seal leg, 24,34 ... Joint projection,
L2, L3: light, RC: rear combination lamp, FL: rear fog lamp, SL: tail stop lamp, 4: magnetic material.

Claims (1)

[Claims] A plurality of lamp chambers are defined by a lamp housing and a plurality of lenses made of resin, and a plurality of light source bulbs are respectively disposed in the plurality of lamp chambers. In the lighting device, the plurality of lenses are integrated by a magnetic material welding method via an opaque magnetic material.