Vehicular lighting fixture

The vehicle lamp design addresses the challenges of molding composite lenses by using two-color molding of light-transmitting and non-light-transmitting portions, resulting in a cost-effective and lightweight outer lens.

JP2025085116APending Publication Date: 2025-06-05KOITO MFG CO LTD
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Patent Information

Application Number
JP2023198769
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-11-24
Publication Date
2025-06-05

AI Technical Summary

Technical Problem

Existing composite vehicle lamps face challenges in controlling the molding of outer lenses with different volume cover materials, leading to potential resin turbulence and increased costs due to complex mold structures and excessive resin usage.

Method used

A vehicle lamp design featuring an outer lens composed of light-transmitting and non-light-transmitting portions, where the light-transmitting portions have flange portions and are interconnected via connecting portions, and the non-light-transmitting member is laminated on the light-transmitting member at the flange and connecting portions, formed using two-color molding.

Benefits of technology

This design simplifies molding control, reduces resin usage, and lowers production costs while achieving a lightweight outer lens.

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Abstract

To provide a vehicular lighting fixture which has achieved low cost and weight saving of an outer lens in a composite type lamp.SOLUTION: An outer lens 6 is constituted by including a CL light transmission part 61 and an HL light transmission part 62 functioning as a CL lens part 6C and an HL lens part 6H, and a non-light transmission part 66. The CL light transmission part 61 and the HL light transmission part 62 have flange parts 61f, 62f respectively, and they are integrally formed by light transmission resin, in a state of being mutually connected by connection parts 64, 65. Non-light transmission resin for forming the non-light transmission part 66 is laminated and formed at the light transmission resin at the flange parts 61f, 62f and the connection parts 64, 65 excluding the CL light transmission part 61 and the HL light transmission part 62, and is formed on the same surface as the light transmission resin in a region where the light transmission resin does not exist.SELECTED DRAWING: Figure 7
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Description

[Technical field]

[0001] The present invention relates to a vehicle lamp having an outer lens, and more particularly to a vehicle lamp suitable for use in a composite lamp (combination lamp) in which a plurality of lamps are integrally formed. [Background technology]

[0002] Some vehicles, including automobiles, are equipped with composite lamps that integrate multiple lamps with different functions. For example, there are composite front lamps that combine headlamps, clearance lamps, and turn signal lamps, and composite rear lamps that combine tail lamps, backup lamps, and stop lamps. In such composite lamps, lamp units for multiple lamps are installed inside one lamp housing, and an outer lens, also called a translucent cover, is attached to the front side of the lamp housing.

[0003] For example, Patent Document 1 proposes a composite lamp that integrates a tail lamp, a stop lamp, and a turn signal lamp. As the outer lens, an outer lens is proposed in which a first cover material and a third cover material that are translucent corresponding to each lamp and a second cover material that is non-translucent and provided in the boundary region or peripheral region of the first and third cover materials are two-color molded. An example is shown in which the first cover material is configured as an outer lens corresponding to the tail lamp and the stop lamp, and the third cover material is configured as an outer lens corresponding to the turn signal lamp, and the first cover material and the third cover material are configured as primary molded products, and the second cover material is configured as a secondary molded product. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-20396 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology of Patent Document 1, the first cover material and the third cover material as the primary molded product are configured as separate independent molded products. In this way, when the independent first and third cover materials are molded simultaneously, if the volumes of the first cover material and the third cover material are different, it becomes difficult to control the molding of each cover material, for example, to control the injection speed of the resin. That is, when injecting resin into a cavity in a mold, it is difficult to inject the resin evenly into the first cover material with a large volume and the third cover material with a small volume, which may cause turbulence of the resin in the mold and affect the molding quality. It is speculated that Patent Document 1 solves this problem by adopting a direct gate and a side gate, but this makes the mold structure complicated, which is one of the factors that increases the cost.

[0006] In addition, in Patent Document 1, the first cover material is configured as an outer lens corresponding to the tail lamp and the stop lamp, but in order to make these lamps look like independent lamps, the second cover material is formed in a laminated state in the surrounding area and boundary area of ​​the first cover material and the third cover material. Therefore, in this surrounding area and boundary area, two layers of translucent and non-translucent resin are formed, which increases the amount of resin, which causes cost increase and is an obstacle to making the outer lens lighter.

[0007] An object of the present invention is to provide a vehicle lamp in which the outer lens of the lamp is made low-cost and lightweight. [Means for solving the problem]

[0008] The present invention is a vehicle lamp having an outer lens composed of a plurality of light-transmitting portions formed of a light-transmitting material and a non-light-transmitting portion formed of a non-light-transmitting material, in which the plurality of light-transmitting portions have flange portions and are integrally formed with the light-transmitting material in a state in which they are interconnected via connecting portions, and the non-light-transmitting member is laminated on the light-transmitting member at the flange portions and the connecting portions and is formed on the same plane as the light-transmitting member in areas where no light-transmitting member is present.

[0009] In the present invention, it is preferable that the non-translucent member has a window portion formed in a part of the connecting portion that is not laminated. Also, in the present invention, it is preferable that the outer lens is formed by resin molding, and that the light-transmitting portion and the connecting portion are formed as an integrated primary molded product, and the non-translucent portion is formed as a secondary molded product by two-color molding.

[0010] A preferred embodiment of the present invention is configured as a composite vehicle lamp comprising an outer lens and a lamp housing including a lamp body to which the outer lens is attached, and in which a plurality of different lamp units are arranged within the lamp housing, and the plurality of light-transmitting portions of the outer lens are configured as portions through which light emitted from the plurality of lamp units passes.

[0011] In this embodiment, the lamp housing is attached to the vehicle body, the lamp units are configured as independent lamps having different functions, and the light-transmitting portions are configured as lens portions of the independent lamps. The light-transmitting member constituting the lens portions of the lamp units may have multiple portions, and these multiple portions may be connected to each other by connecting portions. Furthermore, the connecting portions may be configured to be covered and hidden by the vehicle body. Effect of the Invention

[0012] According to the present invention, the outer lens has a plurality of light-transmitting portions each having a flange portion, and is integrally formed of a light-transmitting member in a state where the light-transmitting portions are connected to each other by a connecting portion, so that molding control when molding the plurality of light-transmitting portions is easy, and a suitable outer lens can be obtained. Also, the non-light-transmitting member is laminated to the light-transmitting member at the flange portion and the connecting portion, and is formed on the same surface as the light-transmitting member in an area where the light-transmitting member is not present, so that the amount of light-transmitting member and non-light-transmitting member required to form the outer lens can be reduced, thereby achieving cost reduction and weight reduction. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view of an automobile equipped with a vehicle lamp according to an embodiment; [Diagram 2] 1 is an external perspective view of a vehicle lamp (composite type front lamp) according to an embodiment; [Diagram 3] 3 is a longitudinal sectional view of a main part of the composite front lamp taken along line III-III in FIG. 2. [Figure 4] FIG. 3 is a schematic partially exploded perspective view of a main part of the combined front lamp of FIG. 2; [Diagram 5] 1A and 1B are front views of the outer lens, where (a) shows the primary molded product and (b) shows the secondary molded product. [Figure 6] 1(a) and 1(b) are schematic diagrams explaining problems that arise when forming a primary molded product. [Figure 7] 5(a) and (b) are enlarged cross-sectional views taken along lines AA and BB in FIG. 5(b). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an automobile CAR equipped with a composite front lamp 1 having an outer lens according to an embodiment of the present invention. The composite front lamp 1 is equipped on the left and right sides of the front body of the automobile CAR, with a clearance lamp 2 and a headlamp 3 combined. An upper opening window UW having a U-shape facing inward laterally and a lower opening window LW having a substantially circular shape are opened on the left and right sides of the body panel BP at the front body of the automobile, with the clearance lamp 2 disposed inside the upper opening window UW and the headlamp 3 disposed inside the lower opening window LW. The clearance lamp 2 may be configured to function as a daytime running lamp or a turn signal lamp.

[0015] 2 is an external view of a combined front lamp 1 disposed at the left front part of an automobile CAR. The combined front lamp 1 is disposed inside the vehicle body panel BP, particularly behind the upper opening window UW and the lower opening window LW. The combined front lamp 1 has one lamp housing 4 that extends over an area including the upper opening window UW and the lower opening window LW when disposed, and the respective lamp units of the clearance lamp 2 and the head lamp 3, i.e., a clearance lamp unit (hereinafter, CL unit) 20 and a head lamp unit (hereinafter, HL unit) 30 are housed inside the lamp housing 4. When the combined front lamp 1 is disposed inside the vehicle body panel BP, the CL unit 20 is disposed opposite the upper opening window UW of the vehicle body panel BP, and the HL unit 30 is disposed opposite the lower opening window LW.

[0016] Fig. 3 is a vertical cross-sectional view of the composite front lamp 1, and is a vertical cross-sectional view of a portion corresponding to line III-III in Fig. 2. Fig. 4 is a schematic exploded perspective view of the main portion. The lamp housing 4 includes a lamp body 5 with an open front face, and an outer lens 6 attached to the front opening of the lamp body 5. A CL unit 20 is disposed in an upper region inside the lamp body 5, and an HL unit 30 is disposed in a lower region. The outer lens 6 includes a clearance lamp lens portion (hereinafter, CL lens portion) 6C corresponding to the CL unit 20 in its upper region, and a headlamp lens portion (hereinafter, HL lens portion) 6H corresponding to the HL unit 30 in its lower region.

[0017] The CL unit 20 includes a reflector 21, which is disposed over a surface area including the entire area of ​​the upper opening window UW and is supported by the lamp body 5. A sideways U-shaped groove 21a is formed in the front position of the reflector 21 in accordance with the opening shape of the upper opening window UW, and a light guide (light guiding body) 22 is disposed in this groove 21a and supported by the reflector 21. Both ends of the light guide 22 are configured as light incident surfaces, and LEDs (light emitting diodes) 23 that emit white or a color similar to white light are disposed as clearance lamp light sources facing these light incident surfaces.

[0018] When the LED 23 of the CL unit 20 emits light, the emitted light is incident on an end surface of the light guide 22 that is configured as an incident surface, and is guided in the extension direction of the light guide 22. Then, the light guided in the light guide 22 is emitted from the side surface of the light guide 22 as shown by the solid line L1 in FIG. 3, and a part of the emitted light is directly directed to the outer lens 6, and another part is reflected by the reflector 21 and directed to the outer lens 6. Alternatively, the light guided in the light guide 22 is reflected by a light reflection step formed on the rear surface of the light guide 22 and is emitted from the front side of the light guide 22. These lights are transmitted through the CL lens portion 6C of the outer lens 6 and are irradiated toward the front area of ​​the automobile CAR through the upper opening window UW.

[0019] The HL unit 30 includes a base 31 that also serves as a heat sink, and an LED 32 that emits white light and is configured as a headlamp light source is mounted on the upper surface of the base 31. The light-emitting surface of the LED 32 faces upward, and the base 31 supports a ellipsoidal light-collecting reflector 33 that covers the upper portion of the LED 32 and reflects the light of the LED 32 forward in a concentrated state. In addition, the front portion of the base 31 supports an illumination lens 34 that illuminates the light of the LED 32 concentrated by the light-collecting reflector 33 toward the outer lens 6, and a variable shade mechanism 35 that is driven to a position where a portion of the concentrated light is blocked or not blocked.

[0020] In this HL unit 30, when the LED 32 emits light, the emitted light is reflected by the light collecting reflector 33 and collected at a position near the variable shade mechanism 35, as shown by the solid line L2 in FIG. 3. When the variable shade mechanism 35 is controlled to the light blocking position as shown by the solid line, a part of the emitted light is blocked by the variable shade mechanism 35. The light L3 that is not blocked is incident on the projection lens 34, refracted and transmitted by the projection lens 34, and further transmitted through the HL lens portion 6H of the outer lens 6, and irradiated toward the front area of ​​the automobile CAR through the lower opening window LW. This provides illumination with low beam light distribution. When the variable shade mechanism 35 is tilted and controlled to the non-light blocking position, most of the reflected light L2 is transmitted through the projection lens 34, and the transmitted light L3 and L4 provide illumination with high beam light distribution.

[0021] The outer lens 6 has an outer shape corresponding to the front opening of the lamp body 5, and is attached by bonding or welding its outer edge 63 to the edge of the opening of the lamp body 5. The CL lens portion 6C and the HL lens portion 6H are configured as light-transmitting portions that transmit light, and most of the other regions are configured as non-light-transmitting portions that do not transmit light. The outer lens 6 is formed by two-color molding of a light-transmitting resin and a non-light-transmitting resin. That is, the light-transmitting portion is configured as a primary molded product 60A that is primarily molded with a transparent and colorless light-transmitting resin, and the non-light-transmitting portion is configured as a secondary molded product 60B that is secondary molded with a non-light-transmitting resin such as a black resin on the primary molded product 60A.

[0022] FIG. 5(a) is a front view of a primary molded product 60A forming the lens portions 61 and 62. In the figure, a CL lens portion 6C having a horizontal U-shape and a HL lens portion 6H having a substantially circular shape are integrally molded from a light-transmitting resin. The CL lens portion 6C is composed of a CL light-transmitting portion 61 having a horizontal U-shape, and a flange portion 61f is integrally formed around the CL light-transmitting portion 61. The HL lens portion 6H is composed of a substantially circular HL light-transmitting portion 62, and a flange portion 62f is integrally formed around the HL light-transmitting portion 62. In the CL light-transmitting portion 61, two CL connecting portions 64 extending in the vertical direction are formed between an upper side portion 61a and a lower side portion 61b with a required gap in the horizontal direction, and the upper side portion 61a and the lower side portion 61b are mutually connected by the two CL connecting portions 64 via the flange portion 61f. In addition, the HL light-transmitting portion 62 is connected to the lower side portion 61b of the CL light-transmitting member 61 via a flange portion 62f by one HL connecting portion 65 extending in the vertical direction. The CL connecting portion 64 and the HL connecting portion 65 are made of the same light-transmitting resin as the CL light-transmitting portion 61 and the HL light-transmitting portion 62.

[0023] The width dimension of each of the two CL connecting parts 64, 65 is shorter than the dimension in the length direction in the left-right direction of the CL light-transmitting part 61, i.e., the length dimension of each of the upper and lower side parts 61a, 61b including the flange part 61f. The width dimension in the left-right direction of the HL connecting part 65 is shorter than the diameter dimension along the left-right direction including the flange part 62f of the HL light-transmitting part 62. Therefore, the CL light-transmitting part 61 and the L light-transmitting part 62 are connected at their respective parts by the CL connecting part 64 and the HL connecting part 65. The fact that the width dimensions of the CL connecting part 64 and the HL connecting part 65 are made as short as possible will be described later.

[0024] 3, in the outer lens 6, the lower side 61b of the CL light-transmitting portion 61 is disposed at a position protruding a required dimension toward the front of the lamp from the upper side 61a. The HL light-transmitting portion 62 is disposed at a position protruding a required dimension toward the front of the lamp from the CL light-transmitting portion 61. That is, the cross section of the CL light-transmitting portion 61 from the upper side 61a to the HL light-transmitting portion 62 is formed in a stepped shape. Correspondingly, the CL connecting portion 64 and the HL connecting portion 65 each have a cross-sectional shape bent in the thickness direction.

[0025] Thus, in the primary molded product 60A, the upper side 61a and the lower side 61b of the CL light-transmitting portion 61 are connected by the CL connecting portion 64, and the lower side 61b and the HL light-transmitting portion 62 are connected by the HL connecting portion 65 to be integrated. Therefore, as shown in FIG. 6(a), the mold for molding the primary molded product 60A is composed of one continuous cavity C1. If a gate G1 for injecting resin is disposed at a position approximately close to the center of the cavity C1, each part in the cavity C1 will have an approximately uniform flow path length from the gate G1, and the resin R1 will flow into each part of the cavity C1 at an equal speed and time. This allows suitable resin molding without being affected by the difference in volume between the CL light-transmitting portion 61 including the flange portion 61f and the HL light-transmitting portion 62 including the flange portion 62f. That is, there is no need to provide a direct gate or a side gate as in Patent Document 1, and suitable primary molding is possible even with a low-cost mold. Also, it is possible to prevent the control when injecting the resin from becoming complicated.

[0026] 6(b), if the CL light-transmitting portion 61 and the HL light-transmitting portion 62 are independent, the resins R2 and R3 are injected into the cavities C2 and C3 that mold them through separate gates G2 and G3, respectively. Therefore, if the internal volumes of the cavities C2 and C3 that form the CL light-transmitting portion 61 and the HL light-transmitting portion 62 are different, it becomes difficult to inject the resin evenly into both cavities C2 and C3. For example, if the resin is injected into each of the cavities C2 and C3 at the same speed, the cavity C3 with the smaller volume will be filled first, and the excess resin will cause burrs or the like, or turbulence of the resin will occur in the cavities C2 and C3, resulting in a decrease in molding quality.

[0027] Here, the CL connecting portion 64 is not formed over the entire length of the CL light transmitting portion 61 including the flange portion 61f, and is composed of two CL connecting portions 64 having a width dimension as short as possible relative to the left-right length of this CL light transmitting portion 61, but the width dimension of this CL connecting portion 64 is formed to the minimum width dimension that does not impair the injection and smooth flow of resin into the cavity C1 shown in Fig. 6(a). The HL connecting portion 65 is formed to a width dimension as short as possible compared to the left-right diameter dimension of the HL light transmitting portion 62 including the flange portion 62f, and is formed to the minimum size that does not impair the injection and smooth flow of resin into the cavity C1 of the HL light transmitting portion 62 during primary molding.

[0028] In the molded primary molded product 60A, the upper side 61a and the lower side 61b of the CL light transmitting portion 61, each having an elongated shape extending in the left-right direction, are connected by the CL connecting portion 64, thereby increasing the overall mechanical strength of the CL light transmitting portion 61 and preventing deformation during secondary molding. The HL light transmitting portion 62 is connected to the CL light transmitting portion 61 by the HL connecting portion 65, so that positional fluctuation of the HL light transmitting portion 62 with respect to the CL light transmitting portion 61 during secondary molding is suppressed, and the relative positional accuracy of the two is improved.

[0029] On the other hand, FIG. 5(b) is a front view of a secondary molded product 60B, i.e., an outer cover 6, obtained by two-color molding of a non-transparent resin on a primary molded product 60A, and a non-transparent portion 66 is shown by dotted lines. This non-transparent resin is made of a resin that does not transmit light, such as a black resin. Although detailed explanations are omitted, this secondary molded product 60B is formed as a two-color molded product in which the non-transparent resin is integrated with the back side of the transparent resin by placing the molded primary molded product 60A in a secondary mold and injecting the non-transparent resin into the secondary mold to perform secondary molding. In addition, the secondary molded product 60B has a shape corresponding to the outer shape of the outer lens 6, and its outer edge portion 63 is molded into a shape corresponding to the front opening of the lamp body 5, and is supported by being bonded or welded to the edge of the front opening of the lamp body 5 at this outer edge portion 63.

[0030] In the secondary molded product 60B, in the CL light transmitting portion 61 and the HL light transmitting portion 62, the non-light transmitting portion 66 is laminated on the flange portions 61f, 62f excluding the CL light transmitting portion 61 and the HL light transmitting portion 62. As a result, the CL lens portion 6C is formed by the CL light transmitting portion 61, and the HL lens portion 6H is formed by the HL light transmitting portion 62. The non-light transmitting portion 66 is formed of a non-light transmitting resin provided over the region between the CL connecting portion 64 and the HL connecting portion 65, the region between the upper side portion 61a and the lower side portion 61b of the CL light transmitting portion 61, and further over the region sandwiched between the flange portion 61f of the CL light transmitting portion 61 and the flange portion 62f of the HL light transmitting portion 62.

[0031] 7(a) and (b) are cross-sectional views taken along lines AA and BB in FIG. 5(b), but the dimensions in the thickness direction of the lens are exaggerated for the sake of explanation. As can be seen from these figures, the non-light-transmitting resin constituting the non-light-transmitting portion 66 is laminated on the light-transmitting resin at the flanges 61f and 62f of the CL light-transmitting portion 61 and the HL light-transmitting portion 62, and is only laminated on the light-transmitting resin at the CL connecting portion 64 and the HL connecting portion 65. That is, the non-light-transmitting resin is not laminated on the CL light-transmitting portion 61 and the HL light-transmitting portion 62. A window portion w is formed in a part of the CL connecting portion 64 and the HL connecting portion 65, and the non-light-transmitting resin is not laminated on the light-transmitting resin in this window portion w either. In addition, the non-light-transmitting resin is formed so as to be flush with the light-transmitting resin in the area where the light-transmitting resin does not exist.

[0032] Therefore, the amount of translucent resin and non-translucent resin required to form the outer lens 6 of a required area can be reduced. In particular, the amount of translucent resin is sufficient to form each of the CL translucent portion 61 and its flange portion 61f, the HL translucent portion 62 and its flange portion 62f, the CL connecting portion 64, and the HL connecting portion 65. The amount of non-translucent resin is sufficient to form the entire region of the outer lens 6 except for the CL translucent portion 61, the HL translucent portion 62, and the window portions w of the CL connecting portion 64 and the HL connecting portion 65. Therefore, compared to the configuration in which translucent resin is formed over almost the entire surface of the lens as in Patent Document 1, and non-translucent resin is formed over this translucent resin, the amount of resin can be reduced, making it possible to reduce costs. In addition, the weight of the outer lens can be reduced by reducing the amount of resin.

[0033] As shown in Fig. 3, the composite front lamp 1 having the above configuration is configured by installing the CL unit 20 and the HL unit 30 inside the lamp body 5, and further installing the outer lens 6 so as to cover the front opening of the lamp body 5. In the installed outer lens 6, the CL light-transmitting portion 61, i.e., the CL lens portion 6C, is disposed opposite the CL unit 20. Also, the HL light-transmitting portion 62, i.e., the HL lens portion 6H, is disposed opposite the HL unit 30. The light emitted from the CL unit 20 is irradiated through the CL lens portion 6C, and the light emitted from the HL unit 30 is irradiated through the HL lens portion 6H. The non-light-transmitting portion 66 of the outer lens 6 covers and conceals the internal region of the lamp housing 1 other than the CL unit 20 and the HL unit 30, so that this internal region is not exposed to the outside through the outer lens 6.

[0034] The composite front lamp 1 is then attached to the front of the vehicle body of the automobile CAR, and the vehicle body panel BP is then attached to the vehicle body from the front side. When the vehicle body panel BP is attached, the CL lens portion 6C is exposed through the horizontal U-shaped upper opening window UW, and the HL lens portion 6H is exposed through the circular lower opening window LW. Therefore, the light of the CL unit 20 is irradiated from the CL lens portion 6C through the upper opening window UW, and the light of the HL unit 30 is irradiated from the HL lens portion 6H with the lower opening window LW closed. As a result, the automobile CAR is equipped with the composite front lamp 1, which combines the CL lamp 2 and the HL lamp 3, as shown in FIG. 1.

[0035] In this embodiment, the CL connecting portion 64 and the HL connecting portion 65 each have a window portion w that is not overlaid with non-translucent resin, but the front side of this window portion w is covered by the vehicle body panel BP when the composite front lamp 1 is assembled to the automobile CAR. Therefore, the window portion w is not exposed to the outside of the automobile, and the external appearance is not impaired.

[0036] Furthermore, in the CL connecting portion 64 and the HL connecting portion 65, a part of the light of the CL unit 20 or a part of the light of the HL unit 30 may be guided inside. However, since the CL connecting portion 64 and the HL connecting portion 65 are bent in the thickness direction, the light guided from the CL lens portion 6C to the HL lens portion 6H or the light guided from the HL lens portion 6H to the CL lens portion 6C is suppressed at this bent portion, particularly in the HL connecting portion 65. This makes it possible to prevent, for example, when only the CL unit 20 is emitting light, the light from being emitted from the HL lens portion 6H, which makes the HL unit 30 look like it is emitting light pseudo-emitted.

[0037] As described above, the outer lens is integrally formed of a light-transmitting resin in a state where a plurality of light-transmitting parts for forming the lens parts of a plurality of independent lamps are connected by a connecting part, and a non-light-transmitting resin is two-color molded on the formed light-transmitting parts and connecting parts. In this configuration, the connecting parts are made to have a size necessary and sufficient for favorably molding each light-transmitting resin, while being as small as possible compared to the size of the light-transmitting parts. In addition, the non-light-transmitting resin is laminated on the light-transmitting resin at the edges of the light-transmitting parts and part of the connecting parts, but is formed on the same surface as the light-transmitting resin in other areas. As a result, the amount of light-transmitting resin and non-light-transmitting resin required to form the outer lens is suppressed, and a low-cost and lightweight outer lens is obtained.

[0038] In the embodiment, an example has been described in which the flange portions 61f, 62f are provided around the CL light transmitting portion 61 and the HL light transmitting portion 62, respectively, but these flange portions 61f, 62f may only exist partially and do not necessarily exist over the entire circumference of the CL light transmitting portion 61 and the HL light transmitting portion 62. In this case, the amount of light transmitting resin for forming each of the flange portions 61f, 62f can be reduced.

[0039] In the embodiment, an example of a composite front lamp having a CL unit and an HL unit is shown as a lamp according to the present invention, but the present invention can also be applied to a composite lamp composed of other lamp units. For example, it may be a combination of a head lamp unit and an auxiliary lamp unit. In any configuration of the composite lamp, the translucent members forming the lens parts of the lamp units may be molded as one translucent primary molded product connected by connecting parts.

[0040] Furthermore, even when one lamp unit has multiple lens parts, the light-transmitting parts forming the multiple lens parts may be connected by connecting parts. Then, the area of ​​the primary molded product excluding the light-transmitting parts and a part of the connecting parts may be molded with a non-light-transmitting resin by two-color molding to form a secondary molded product. In this way, it is possible to favorably mold the outer lens using light-transmitting resin and non-light-transmitting resin, and the amount of resin of the light-transmitting resin and non-light-transmitting resin can be reduced, thereby reducing the cost and weight of the outer lens.

[0041] The present invention may also be applied to a lamp having a configuration in which there is no vehicle body panel on the front side of the outer lens. In this case, in the connecting portion that connects a plurality of light-transmitting portions, a non-light-transmitting resin is laminated on the entire surface of the connecting portion. Even in this way, the area in which the light-transmitting resin and the non-light-transmitting resin are laminated is small even including the connecting portion, and the area of ​​the connecting portion may be designed to a size necessary and sufficient for suitable molding, so that the amount of resin required for molding can be reduced, and cost and weight can be reduced. Note that the present invention can also be applied to a case in which the outer lens is formed of a light-transmitting member and a non-light-transmitting member made of a material other than resin. [Explanation of symbols]

[0042] 1. Composite front lamp 2 Clearance lamp 3. Headlamp 4 Lamp Housing 5 Lamp body 6 Outer Lens 6C CL lens part (clearance lamp lens part: light transmitting part) 6H HL lens part (headlamp lens part: transparent part) 20 CL ​​unit (clearance lamp unit) 30 HL unit (headlamp unit) 60A primary molded product (transparent member: transparent resin) 60B Secondary molded product (non-transparent material: non-transparent resin) 61 CL transparent part 61f Flange 62 HL Translucent Part 62f Flange Part 64 CL Connection Part 65 HL Connection Part 66 Opaque Part

Claims

1. A vehicle lamp having an outer lens composed of a plurality of light-transmitting portions formed of a light-transmitting material and a non-light-transmitting portion formed of a non-light-transmitting material, wherein the plurality of light-transmitting portions have flange portions and are integrally formed with the light-transmitting member in a state where they are connected to each other via connecting portions, and the non-light-transmitting member is laminated on the light-transmitting member at the flange portions and the connecting portions, and is formed on the same plane as the light-transmitting member in areas where the light-transmitting member is not present.

2. The vehicular lamp according to claim 1 , wherein the non-translucent member has a window portion that is not laminated at the connecting portion.

3. 2. The vehicular lamp according to claim 1, wherein the outer lens is formed by resin molding, the translucent portion having the flange portion and the connecting portion are formed as a primary molded product from a translucent resin, and the non-translucent portion is formed as a secondary molded product by two-color molding from a non-translucent resin.

4. The vehicle lamp according to claim 1 , wherein the connecting portion connects the plurality of light transmitting portions to each other at a portion thereof and is bent in a thickness direction of the outer lens.

5. 2. The vehicle lamp according to claim 1, further comprising a lamp housing including the outer lens and a lamp body to which the outer lens is attached, and configured as a composite vehicle lamp in which a plurality of lamp units are arranged within the lamp housing, and a plurality of light-transmitting portions of the outer lens are portions through which light emitted from the plurality of lamp units passes.

6. 6. The vehicular lamp according to claim 5, wherein the lamp housing is attached to a vehicle body, the plurality of lamp units are configured as independent lamps each having a different function, and the plurality of light-transmitting portions are configured as lens portions of the respective independent lamps.

7. 7. The vehicle lamp according to claim 6, wherein the lamp unit has a light transmitting portion constituting a lens portion, the light transmitting portion having a plurality of portions, the plurality of portions being connected to each other by a connecting portion.

8. The vehicular lamp according to claim 6, wherein the connecting portion is covered and hidden by a body of the vehicle.

9. 6. The vehicle lamp according to claim 5, wherein the plurality of lamp units include a head lamp unit and an auxiliary lamp unit.

Citation Information

Patent Citations

  • Lighting fixture cover member

    JP2023020396A