JP2000357401A - Vehicular light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance appearances, to prevent a solvent from cracking and to increase light shielding effects. SOLUTION: In this vehicular light, a housing 5 is disposed in the outer surface and/or inner surface of a junction part 40 of integrated lenses 2 and 3. Consequently, a welded burr 4 is housed in the housing 5, the welded burr 4 does not degrade appearances and the appearances of the light are enhanced. A cover 6 is disposed in the outer and/or inner surface of the junction part 40 of the integrated lenses 2 and 3. Accordingly, the junction part 40 is covered with the cover 6 so that the junction part 40 can be prevented from being cracked because of no solvent applied on the junction part 40. A projecting part 7 is disposed in the outer and/or inner surface of the junction part 40 of the integrated lenses 2 and 3. Therefore, the size of the projecting part 7 can be made constant so that the space dimensions between the projecting part 7 and the tip end of a compartment wall can be made constant. The light from one lamp cannot leak out to the other lamp and light shielding effects are great.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of lenses made of resin, which are used for a vehicle in which a lens integrated by a vibration welding method or a heat welding method (ie, an integrated lens) is used. The present invention relates to a lighting device, and more particularly to a vehicle lighting device having improved appearance, prevention of solvent cracks, and a large light-shielding effect.

[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, in this example, two light rooms 22, 33,
It comprises a plurality of light sources arranged in the two lamp chambers 22, 33, in this example, two light source bulbs 21, 31, respectively.

[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 5.5.
The tail stop lamp SL is made of a thermoplastic resin, for example, a red transparent acrylic resin having a basic thickness of 1.5 to 5.5 mm. is there. The two lenses 2 and 3 are integrated by a vibration welding method or a heat welding method (secondary processing). At the edge of the lens having the integrated structure (i.e., the integrated lens may be simply referred to as a lens hereinafter) 2, 3, seal legs 20,
The lamp housing 1 is provided with a seal recess 11 at the opening edge of the lamp housing 1. This seal recess 11 has seal legs 20, 3
0 is fixed via the sealing 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 40 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 vehicle lamp described above, the two lenses 2 and 3 are integrated by a vibration welding method or a heat welding method. A welding burr 4 is generated on the outer surface (the surface opposite to the light chambers 22 and 33) and the inner surface (the surface on the side facing the light chambers 22 and 33) of the joint portion 40 of the individual lenses 2 and 3. However, the conventional vehicular lamp includes the welding burr 4 described above.
And no measures are taken against the joint 40,
The following issues arise. That is, since the welding burr 4 protrudes from the outer and inner surfaces of the lenses 2 and 3, particularly from the outer surface, the appearance is poor. Further, since the joint 40 is exposed on the outer surfaces of the lenses 2 and 3, when a hard coat or a top coat is applied to the outer surfaces of the lenses 2 and 3, a solvent such as a hard coat or a top coat is applied to the joint 40. As a result, cracks may occur in the joint 40. Furthermore, since the size of the welding burr 4 projecting from the inner surfaces of the lenses 2 and 3 varies, the size of the gap between the welding burr 4 and the tip of the partition wall 12 varies, so that the light of one lamp is emitted from the other lamp. (The light L2 from the light source bulb 21 of the rear fog lamp FL leaks to the tail stop lamp SL side, while the light L3 from the light source bulb 31 of the tail stop lamp SL leaks to the rear fog lamp FL side). is there.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular lamp having improved appearance, prevention of solvent cracks, and a large light-shielding effect.

[0007]

In order to achieve the above object, the present invention (the invention according to claim 1) provides a storage portion for storing a welding burr on an outer surface or an inner surface of a joint portion of an integrated lens. Is provided. As a result,
Since the welding burrs are stored in the storage portion, the welding burrs do not protrude from the outer surface or the inner surface, particularly the outer surface of the lens, so that the appearance of the welding burrs does not deteriorate and the appearance is improved. In addition, if the tip of the partition wall is located in or close to the storage section on the inner surface of the lens,
The light of one lamp does not leak to the other lamp,
Great light-shielding effect.

Further, the present invention (the invention according to claim 2)
In order to achieve the above object, a cover for covering the welding burr and the joint is provided on the outer surface or the inner surface of the joint of the integrated lens. As a result, the welding burrs are covered with the covering portion, so that the appearance of the welding burrs is not bad and the appearance is improved. In addition, since the joint is covered by the cover, the joint is not exposed to the outer surface of the lens, and even if a hard coat or a top coat is applied to the outer surface of the lens, the solvent such as the hard coat or the top coat is joined. It is possible to prevent the occurrence of cracks at the joints without being applied to the joints. In addition, since the size of the covering portion on the inner surface of the lens can be made constant, the gap between the covering portion and the tip of the partition wall can be made constant, and the light of one lamp can be emitted by the other. The lamp does not leak, and the light shielding effect is large.

Further, the present invention (the invention according to claim 3)
Is characterized in that, in order to achieve the above object, a convex portion projecting more than a welding burr is provided on an outer surface or an inner surface of a joint portion of the integrated lens. As a result, the welding burr is hidden by the convex portion, so that the welding burr protruding from the outer surface or the inner surface of the lens becomes inconspicuous,
The bad appearance due to the welding burr is eliminated, and the appearance is improved. Further, since the size of the convex portion on the inner surface of the lens can be made constant, the gap between the convex portion and the tip of the partition wall can be made constant, and the light of one lamp can be emitted by the other. There is no leakage to the lamp, and the light shielding effect is large.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, eight embodiments of a vehicle lamp according to the present invention will be described with reference to FIGS.
In 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 will be described.

FIGS. 1A and 1B show a first embodiment of a vehicular lamp according to the present invention. In the figure, the same reference numerals as those in FIGS. In the drawing, reference numeral 5 denotes a storage section for storing the welding burr 4. The storage portion 5 is formed of a step or a concave portion, and is provided on the outer surface side of the joint portion 40 of the integrated lenses 2 and 3 (the outer surface side of the lens 2 of the rear fog lamp FL). In FIG. 1A, the dimension a of the storage section 5 is 0.5 to 2.0 mm, and the dimension b of the storage section 5 is the same.
Is 0.5 to 2.0 mm, and the dimension c is 1.0 to 3.0 mm.

Since the vehicular lamp according to the first embodiment of the present invention has the above-described configuration, the welding burr 4 is housed in the housing portion 5, so that the welding burr 4 is integrated with the integrated lens 2. No longer protrude from the outer surface of 3,
The bad appearance due to the welding burr 4 is eliminated, and the appearance is improved.

FIGS. 2A and 2B show a second embodiment of the vehicular lamp according to the present invention. 1 and FIGS. 9 to 1
The same reference numerals as 1 denote the same components. In the drawing, reference numeral 6 denotes a cover that covers the welding burr 4 and the joint 40. The cover 6 is formed of a convex piece, and is a joint 40 of the integrated lenses 2 and 3.
(Corresponding to the storage section 5) on the outer surface side (the outer surface side of the lens 3 of the tail stop lamp SL). In this case, the storage part 5 forms a cavity by the cover part 6.

In FIG. 1, reference numeral 7 denotes a projection which projects larger than the welding burr 4. The convex portion 7 is provided with the integrated lens 2,
3 is provided on the inner surface side of the joint 40. In this example, the convex portion 7 is provided on the inner surface side of the lens 2 of the rear fog lamp FL. However, in the present invention, the convex portion 7 is provided on the outer surface side of the lens 2 of the rear fog lamp FL.
It may be provided on the inner surface or the outer surface side of the lens 3 of the tail stop lamp SL, and on the inner surface or the outer surface side of the lenses 2 and 3 of the lamps FL and SL. In FIG. 2A, the protrusion dimension d of the projection 7 is 0.5 to 3.0 mm.

Since the vehicle lamp of the present invention in the second embodiment has the above-described configuration, the same functions and effects as those of the first embodiment can be achieved. In particular, in the second embodiment, since the welding burr 4 is covered by the covering portion 6, the appearance of the welding burr 4 is not deteriorated, and the appearance is improved. Moreover,
Since the joint 40 is covered by the cover 6, the joint 40
Is not exposed to the outer surfaces of the lenses 2 and 3, and even if a hard coat or a top coat is applied to the outer surfaces of the lenses 2 and 3, a solvent such as a hard coat or a top coat (FIG. 2B)
(Indicated by the dashed arrow in the middle) does not touch the joint 40, and it is possible to prevent cracks from being generated in the joint 40.

Since the welding burrs 4 are hidden by the projections 7, the welding burrs 4 protruding from the inner surfaces of the lenses 2 and 3 become inconspicuous, so that the appearance of the welding burrs 4 does not deteriorate and the appearance is improved. In addition, since the size of the convex portions 7 on the inner surfaces of the lenses 2 and 3 can be made constant, the gap dimension w between the convex portions 7 and the tip of the partition wall 12 can be made constant. Light of one lamp leaks to the other lamp (light L2 from the light source bulb 21 of the rear fog lamp FL leaks to the tail stop lamp SL side, while
Light L from light source bulb 31 of tail stop lamp SL
3 does not leak to the rear fog lamp FL side), and the light shielding effect is large.

FIGS. 3A and 3B show a third embodiment of the vehicular lamp of the present invention. In the figures, FIGS. 1, 2 and 9
The same reference numerals as those shown in FIGS. The third embodiment is a modified example of the first embodiment and the second embodiment described above. The housing 5 and the cover are provided on the outer surface side of the joint 40 of the integrated lenses 2 and 3. Parts 6 are provided respectively. In FIG. 3A, the dimension e of the storage section 5 is 1.0 to 3.0 mm, the dimension f of the cover section 6 is 1.0 to 3.0 mm, and the dimension g of the cover section 6 is 1.0. 5
５5.0 mm. Since the vehicle lamp of the present invention in the third embodiment has the above-described configuration, the same operation and effect as those of the first embodiment and substantially the same operation as those of the second embodiment are described. The effect (excluding the effect of the convex portion 7) can be achieved.

FIGS. 4A and 4B show a fourth embodiment of the vehicular lamp of the present invention. 1 to 3 and FIG.
The same reference numerals as those shown in FIGS. This fourth embodiment is a modification of the third embodiment described above, and covers the housing 5 on the outer surface of the lens 3 of the tail stop lamp SL on the outer surface of the lens 2 of the rear fog lamp FL. A section 6 is provided. In FIG. 4A, the dimension h of the cover 6 is 0.5 to 2.5 mm, the dimension i of the cover 6 is 0.5 to 1.5 mm, and the dimension j of the storage section 5 is 1. 5 to 5.0 mm, also the dimension k of the storage part 5
Is 1.0 to 3.0 mm, and the dimension 1 of the storage section 5 is 1.
0-3.0mm, tail stop lamp SL lens 3
Has a thickness m of 1.5 mm.

Since the vehicle lamp of the present invention in the fourth embodiment has the above-described configuration, the same operation and effect as those of the third embodiment can be achieved. Particularly, in the fourth embodiment, the cover 6
Is provided so as to hang down from the lens 2 of the upper rear fog lamp FL, so that it is ensured that a solvent such as a hard coat or a top coat (indicated by a broken arrow in FIG. 4B) enters the joint 40 side. Therefore, the occurrence of cracks in the joint portion 40 can be surely prevented.

FIGS. 5A and 5B show a vehicle lamp according to a fifth embodiment of the present invention. In the figures, FIGS. 1 to 4 and 9
The same reference numerals as those shown in FIGS. This fifth embodiment is a modification of the above-described fourth embodiment, in which the storage portion is formed of a stepped portion that is curved from top to bottom from inside to outside as shown in FIG. 50 or a step 51 which is linearly inclined from top to bottom from the inside to the outside as shown in FIG. In addition,
In FIG. 5A, the dimension n of the cover 6 is 1.5 to
5.0 mm, and the dimension o of the storage portion 5 is 1.0 to 3.0 mm.

Since the vehicle lamp of the present invention in the fifth embodiment has the above-described configuration, the same functions and effects as those of the above-described fourth embodiment can be achieved. Particularly, in the fifth embodiment, the storage unit 5
Since the reference numerals 0 and 51 are stepped portions that are curved or linearly inclined from top to bottom from the inside to the outside, the storage portion 5
The solvent that has entered the storage portions 0 and 51 is immediately discharged to the outside of the storage portions 50 and 51, and the solvent does not accumulate in the storage portions 50 and 51, that is, in the vicinity of the bonding portion 40. This can be reliably prevented.

FIGS. 6A and 6B show a sixth embodiment of the vehicular lamp of the present invention. In the figures, FIGS. 1 to 5 and 9
The same reference numerals as those shown in FIGS. The sixth embodiment is a modification of the first embodiment described above, and has an inner surface on the inner surface side of the joint 40 of the integrated lenses 2 and 3 (the inner surface side of the lens 2 of the rear fog lamp FL). A storage part 52 is provided which is inclined linearly from top to bottom from the outside to the outside. In FIG. 6A, the dimension p of the storage section 52 is 0.5 to 5.0 mm, and the dimension q of the storage section 5 is also the same.
Is 0.5 to 2.5 mm.

The vehicle lamp of the present invention according to the sixth embodiment has the above-described configuration, and therefore can achieve the same functions and effects as those of the above-described first embodiment. In particular, in the sixth embodiment, since the storage portion 52 is provided on the inner surface side of the lenses 2 and 3,
If the leading end of the partition wall 12 is located in the storage portion 52 on the inner surface of the lenses 2 and 3, the light of one lamp does not leak to the other lamp, and the light shielding effect is large. Note that the tip of the partition wall 12 may be located near the storage section 52 without being positioned in the storage section 52. Further, in the sixth embodiment, since the storage portion 52 is linearly inclined from top to bottom from the inside to the outside, the storage portion 52 has no corner, and there is no possibility that the lens 2 is broken at the time of joining. . Note that, instead of a straight slope, a curved slope may be used.

FIGS. 7A and 7B show a vehicle lamp according to a seventh embodiment of the present invention. In the figures, FIGS. 1 to 6 and 9
The same reference numerals as those shown in FIGS. The seventh embodiment is a modification of the sixth embodiment described above, and includes a stepped portion on the inner surface side of the joint 40 of the integrated lenses 2 and 3 (the inner surface side of the lens 2 of the rear fog lamp FL). An accommodating portion 53 of a portion or a concave portion is provided. FIG.
In (A), the dimension r of the storage part 52 is 0.5-5.
0 mm, and the size s of the storage section 53 is 0.5 to 2.5 m
m. Since the vehicle lamp of the present invention in the seventh embodiment has the above-described configuration, the operation and effect are substantially the same as those of the above-described sixth embodiment (excluding the operation and effect by the linear or curved slope). Can be achieved.

FIGS. 8A and 8B show an eighth embodiment of the vehicular lamp of the present invention. In the figures, FIGS. 1 to 7 and 9
The same reference numerals as those shown in FIGS. This eighth embodiment is a modification of the above-described seventh embodiment, and is provided on the inner surface side of the joint 40 of the integrated lenses 2 and 3 (the inner surface side of the lens 3 of the tail stop lamp SL). A cover 63 is provided. In FIG. 8A,
The dimension u of the storage part 52 is 0.5 to 4.5 mm,
Is 0.5 to 3.0 mm. Since the vehicle lamp of the present invention in the eighth embodiment has the above-described configuration, the same operation and effect as those of the above-described seventh embodiment can be achieved. In particular, the cover 63
The gap w between the inner wall and the front end of the partition wall 12 can be made constant, and the light of one lamp does not leak to the other lamp, so that the light shielding effect is large.

In the above-described embodiment, the rear combination lamp RC of the vehicle in which the rear fog lamp FL and the tail stop lamp SL are combined.
Although the present invention has been described with reference to an example, the present invention is applied 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 has an amber color on the side of the turn signal lamp). The present invention can be applied to a vehicle lamp in which a plurality of lamps having different functions, such as a front combination lamp, are combined.

In the above embodiment, the storage unit 5
Is provided on the outer surface side of the lens 2 of the rear fog lamp FL, on the inner surface side, and on the outer surface side of the lens 3 of the tail stop lamp SL. In the vehicle lamp of the present invention, the tail stop is provided. It may be provided on the inner surface side of the lens 3 of the lamp SL, or on the outer surface side or inner surface side of both the lamps FL and SL. Further, in the above-described embodiment, the cover 6 is provided with the lens 3 of the tail stop lamp SL.
Are provided on the outer surface side, on the inner surface side, on the outer surface side of the lens 2 of the rear fog lamp FL, but on the inner surface side of the lens 2 of the rear fog lamp FL, and on the outer surfaces of both lamps FL, SL. It may be provided on the side or on the inner side.

[0028]

As is apparent from the above description, the vehicular lamp of the present invention has improved appearance, prevents solvent cracks, and has a large light-shielding effect.

[Brief description of the drawings]

FIG. 1A is an enlarged longitudinal sectional view of a main part of a vehicle lamp according to a first embodiment of the present invention before joining, and FIG. 1B is an enlarged longitudinal sectional view of the same after joining. is there.

FIG. 2A is an enlarged longitudinal sectional view of a main part of a vehicle lamp according to a second embodiment of the present invention before joining, and FIG. 2B is an enlarged longitudinal sectional view of the same after joining. is there.

FIG. 3A is an enlarged longitudinal sectional view of a main part of a vehicle lamp according to a third embodiment of the present invention before joining, and FIG. 3B is an enlarged longitudinal sectional view of the same after joining. is there.

FIG. 4A is an enlarged longitudinal sectional view of a main part of a vehicle lamp according to a fourth embodiment of the present invention before joining, and FIG. 4B is an enlarged longitudinal sectional view of the same after joining. is there.

FIG. 5A is an enlarged longitudinal sectional view of a main part of a vehicle lamp according to a fifth embodiment of the present invention before joining, and FIG. 5B is an enlarged longitudinal sectional view of the same after joining. (C) is an enlarged vertical cross-sectional view showing the storage portion having a linear inclination.

FIG. 6A is an enlarged longitudinal sectional view of a main part of a vehicle lamp according to a sixth embodiment of the present invention before joining, and FIG. 6B is an enlarged longitudinal sectional view of the same after joining. is there.

FIG. 7A is an enlarged longitudinal sectional view showing a main part of a vehicle lamp according to a seventh embodiment of the present invention before joining, and FIG. 7B is an enlarged longitudinal sectional view showing the same state after joining. is there.

FIG. 8A is an enlarged longitudinal sectional view showing a main part of a vehicle lamp according to an eighth embodiment of the present invention before joining, and FIG. 8B is an enlarged longitudinal sectional view showing the same state after joining. is there.

FIG. 9 is a front view of a conventional vehicle lamp.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

FIG. 11 is an enlarged sectional view of an XI part in FIG. 10;

[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: welded burr, 40: joint, 5, 50, 51,
52, 53 ... storage part, 6, 63 ... cover part, 7 ... convex part.

Claims (3)

[Claims] 1. A lamp housing, a plurality of lenses made of resin, a lens integrated by a vibration welding method or a heat welding method, and a lamp chamber defined by the lamp housing and the lens. A light source bulb disposed in the lamp chamber, wherein an outer surface or an inner surface of a joint portion of the integrated lens is provided with a storage portion for storing welding burrs. Vehicle lighting device. 2. A lamp housing, a plurality of lenses made of resin, wherein the lens is integrated by a vibration welding method or a heat welding method, and a lamp chamber defined by the lamp housing and the lens. A lighting device for a vehicle including a light source bulb disposed in the lamp chamber, wherein an outer surface or an inner surface of a joining portion of the integrated lens is provided with a covering portion covering the welding burr and the joining portion. Vehicle lighting device characterized by the above-mentioned. 3. A lamp housing, a plurality of lenses made of resin, a lens integrated by a vibration welding method or a heat welding method, and a lamp chamber defined by the lamp housing and the lens. A light source bulb disposed in the lamp chamber, wherein the outer surface or the inner surface of the joint portion of the integrated lens is provided with a convex portion that protrudes larger than a welding burr. Vehicle lighting device characterized by the above-mentioned.