Lighting cover parts

Abstract

To provide a lighting fixture cover member which has suppressed molding failure, regarding the long lighting fixture cover member which is used for a housing of a vehicular lighting fixture, and especially the lighting fixture cover member of a multi-color molding product which uses a translucent resin member and a non-translucent resin member.SOLUTION: A lighting fixture cover member at least includes: a first cover member molded long in one direction and constituted by a translucent resin member; and a second cover member partially laminated on a front surface of the first cover member, constituted by a non-translucent resin member, and integrally molded with the first cover member. On a first side surface in the longer direction of the first cover member, a plurality of first flange pieces is provided so as to protrude laterally. On a second side surface in the longer direction of the second cover member, a plurality of second flange pieces is provided so as to protrude laterally. The first side surface of the first cover member and the second side surface of the second cover member are the side surfaces in the longer direction in the same direction, and at the first flange pieces and the second flange pieces, gate marks are formed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a long lamp cover member used for the housing of a vehicle lamp, and more particularly to a lamp cover member which is a multi-color molded product using a translucent resin member and a non-translucent resin member. [Background technology]

[0002] In recent years, there has been an increasing demand for long vehicle lamps, such as tail lamps that extend in the vehicle width direction, which are suitable for differentiating designs (for example, Patent Document 1). A multi-color molded product in which a lens portion for transmitting light and a part of the housing are integrally molded is used as a lamp cover member for a part of the housing of a long vehicle lamp. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2019-200897 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a long resin molded product, the flow length of the resin material becomes long, and molding defects are likely to occur. Since the lamp cover member is a multi-color molded product that includes a lens portion made of a translucent resin material to transmit light, molding defects are particularly likely to be a problem.

[0005] The present invention has been made in consideration of the above, and provides a lamp cover member which is a multi-color molded product used for the housing of a long vehicle lamp and which suppresses molding defects. [Means for solving the problem]

[0006] In order to solve the above problem, the lamp cover of the present disclosure is a lamp cover member that forms part of the housing of a long vehicle lamp that is formed to be long in at least one direction, and includes a first cover member made of a translucent resin material that is molded to be long in at least one direction, and a second cover member made of a non-translucent resin material that is partially laminated on the front surface of the first cover member and is molded integrally with the first cover member, wherein a first side surface in the longitudinal direction of the first cover member has a plurality of first flange pieces that protrude laterally, and a second side surface in the longitudinal direction of the second cover member has a plurality of second flange pieces that protrude laterally, the first side surface of the first cover member and the second side surface of the second cover member are longitudinal side surfaces in the same direction, and the first flange piece and the second flange piece are configured to have gate marks formed thereon.

[0007] According to this configuration, a gate can be provided on the flange piece that is a non-design portion in the longitudinal direction of the lamp cover member. Since the lamp cover member is attached to a vehicle as a vehicle lamp, multiple gates can be provided in the longitudinal direction in an arrangement suitable for the shape on the non-design portion that is attached and hidden by the vehicle body. By providing a gate on one side surface in the longitudinal direction, the resin material can be injected evenly, and the occurrence of molding defects can be suppressed.

[0008] In one embodiment, all gate marks formed on the first flange piece of the first cover member are direct gate marks. Since the flange piece is a non-design part, any type of gate can be provided thereon. By providing a direct gate, the injection pressure is ensured and molding defects in the long and voluminous lamp cover member are suppressed.

[0009] In one embodiment, at least a portion of the second flange pieces include a flange piece that is laminated to the first flange piece. The first flange piece and the second flange piece can be provided on one longitudinal surface of the first cover member and the second cover member in a location suitable for injection molding according to the shapes of the first cover member and the second cover member. Therefore, it is also possible to laminate the second flange piece in the same location as the first flange piece. This allows the flange pieces to be provided in locations optimal for injection molding, thereby suppressing the occurrence of molding defects.

[0010] In one embodiment, the second side surface of the second cover member is configured to have a clamp piece for mounting that protrudes laterally. The clamp piece is for mounting, and the side on which the clamp piece is provided is concealed by the vehicle body that is the mounting target. By providing the clamp piece and the flange piece on the same side surface, the flange piece is concealed by the vehicle body.

[0011] In one embodiment, a gate mark is formed on at least a portion of the mounting clamp piece formed on the second cover member. A gate can also be provided on the clamp piece that is concealed in the vehicle. By providing the gate at a location optimal for injection molding, the occurrence of molding defects can be suppressed. Effect of the Invention

[0012] As is clear from the above description, it is possible to provide a lamp cover member in which molding defects are suppressed. [Brief description of the drawings]

[0013] [Figure 1] 1 is a rear view of a vehicle equipped with a vehicle lamp having a lamp cover member according to an embodiment of the present invention. [Diagram 2] This is a lighting fixture for the vehicle. [Diagram 3] FIG. 3 is a vertical cross-sectional view taken along line III-III shown in FIG. 2. [Figure 4] FIG. 4 is a vertical cross-sectional view taken along line IV-IV shown in FIG. [Diagram 5]3 shows a lamp cover member, where (A) shows the lamp cover member, (B) shows the first cover member and the third cover member which are primary molded products, and (C) shows only the second cover member. [Figure 6] This shows the resin molding process for the lamp cover member, which corresponds to Figure 3. [Figure 7] This shows the resin molding process for the lamp cover member, which corresponds to Figure 3. [Figure 8] This is a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The embodiments are illustrative and do not limit the invention, and all the features and combinations thereof described in the embodiments are not necessarily essential to the invention.

[0015] (Vehicle lighting fixtures) Fig. 1 is a rear view of a vehicle CAR equipped with a vehicle lamp 1 having a lamp cover member 100 according to a preferred embodiment of the present invention. The lamp cover member 100 is a part that is visible from the outside, and is a multi-color molded product, so the color scheme of the constituent resin members is colored to make it easy to understand. The same applies to Figs. 2, 5, and 8 described later.

[0016] The vehicle lamp 1 is a rear combination lamp that is composed of a tail lamp TALE that extends horizontally in an upper region, stop lamps STOP that are arranged in a pair in the left and right side regions below the tail lamp TALE, and turn signal lamps TURN that are arranged in a pair below the stop lamp, and is mounted on the rear of the vehicle CAR with the light emitting direction facing backward.

[0017] The tail lamp TALE is formed in a long, straight line horizontally, and the vehicle lamp 1 is configured to be long in the vehicle width direction due to this tail lamp TALE, and is disposed occupying the entire area from the left end to the right end of the vehicle body VB.

[0018] Fig. 2 shows a vehicle lamp 1. When mounted on a vehicle CAR, the vehicle lamp 1 is attached with its light emitting direction toward the rear of the vehicle CAR, but in the following description of the vehicle lamp 1, the light emitting direction of the vehicle lamp 1 will be described as being forward. Fig. 3 is a vertical cross-sectional view taken along line III-III in Fig. 2. Fig. 4 is a vertical cross-sectional view taken along line IV-IV in Fig. 2.

[0019] As shown in Figures 2 to 4, the vehicle lamp 1 is configured symmetrically, with the upper area being composed only of the tail lamp TALE, and the stop lamp STOP and turn signal lamp TURN in the left and right side areas being approximately 1 / 4 the length of the tail lamp TALE and arranged with their ends aligned on both sides, so that the entire lamp is configured to be approximately inverted U-shaped when viewed from the front.

[0020] The vehicle lamp 1 includes a lamp body 50 formed in a box shape with an open front face, and a lamp cover member 100 welded to the front face of the lamp body 50, as a housing of the lamp.

[0021] 2, a plurality of clamp pieces 53 for mounting the vehicle lamp 1 to a vehicle body VB are provided on the upper portion of the vehicle lamp 1 and protrude upward from the upper surface of the vehicle lamp 1. The clamp pieces 53 are part of the lamp body 50 and are provided protruding above the ceiling surface of the lamp body 50, spaced apart at approximately equal intervals in the vehicle width direction.

[0022] In addition, a plurality of flange pieces 101 are provided at the upper portion of the vehicle lamp 1, protruding upward from the upper surface of the vehicle lamp 1. The plurality of flange pieces 101 are part of the lamp cover member 100, and are provided protruding above the ceiling surface of the lamp cover member 100, spaced apart at approximately equal intervals in the vehicle width direction.

[0023] The multiple clamp pieces 53 and the multiple flange pieces 101 are all formed on the same surface (the upper surface in this embodiment) of the vehicle lamp 1 so as to protrude outward from said surface, and are provided so as not to overlap each other.

[0024] A through hole is formed in the center of the clamp piece 53, and as shown in Fig. 4, the mounting clamp 40 is inserted through the through hole and attached to the vehicle body VB, thereby mounting the vehicle lamp 1 to the vehicle CAR. The upper side of the mounted vehicle lamp 1, particularly the clamp piece 53 and flange piece 101 protruding upward, are concealed by the vehicle body VB and shielded from the outside (see Figs. 3 and 4).

[0025] As shown in FIG. 4, the interior of the vehicle lamp 1 is defined as follows: a chamber SP1 for a tail lamp TALE, a chamber SP2 for a stop lamp STOP, and a chamber SP3 for a turn signal lamp TURN.

[0026] The lamp body 50 is an injection molded product made of a non-transparent resin material. The upper region inside the lamp body 50 forms a chamber SP1, and a partition wall 51 for dividing the chambers SP1 and SP2, and a partition wall 52 for dividing the chambers SP2 and SP3 are provided on the inside of the left and right side regions.

[0027] The lamp cover member 100 is a multi-color molded product in which a first cover member 110 made of a translucent red resin member, a second cover member 120 made of a non-translucent resin member, and a third cover member 130 made of a translucent resin member of a different color (amber) from that of the first cover member 110 are molded integrally.

[0028] A second cover member 120 is disposed in front of the chamber SP1 for the tail lamp TALE and the chamber SP2 for the stop lamp STOP, and a third cover member 130 is disposed in front of the chamber SP3 for the turn signal lamp TURN, so that light emitted from each chamber passes through the first cover member 110 or the third cover member 130 made of a light-transmitting resin material and is emitted forward. The second cover member made of a non-light-transmitting resin material is formed integrally with the first cover member 110 and the third cover member 130 as a border that divides the chambers SP1, S2, S3 and as part of the housing of the lamp. (Lamp unit) A lamp unit LU1 for a tail lamp is disposed in the tail lamp chamber SP1. The lamp unit LU1 includes a light guide 11 and a reflector 12.

[0029] The light guide 11 is a rod-shaped optical member, and is formed by injection molding a transparent resin member such as acrylic or polycarbonate.

[0030] The light guide 11 is arranged so that its longitudinal direction coincides with the extension direction of the chamber SP1 for the tail lamp TALE, and is arranged to extend from approximately one side end of the chamber SP1 to the other side end.

[0031] The side end surface of the light guide 11 is a light incident portion, and a light emitting element (not shown) such as an LED is disposed so that the light emission direction faces the side end surface serving as the light incident portion.

[0032] The front side along the longitudinal direction of the light guide 11 is configured as an exit surface 11a that emits light. The rear side of the light guide 11 is formed with a reflection surface 11b having a plurality of steps (not shown) that reflect the light traveling inside the light guide 11 toward the exit surface 20a. The light emitted from the light emitting element enters the light guide 11 from the side end surface of the light guide 11 and travels inside the light guide 11 while repeatedly being totally reflected, and the light that enters the reflection surface 11b is reflected by the steps toward the exit surface 11a and is emitted forward from the exit surface 11a.

[0033] The reflector 12 is formed long in one direction with approximately the same length as the light guide 11, and the vertical cross section in the longitudinal direction is configured to be L-shaped, with the light guide 11 held in the central curved portion. The inside of the reflector 12 is a reflective surface that reflects light, and is configured to guide the light emitted from the light guide 11 forward. Since the light that enters the light guide 11 travels inside the light guide 11 while repeatedly being diffusely reflected, the light reflected by the reflective surface 11b of the light guide 11 and emitted from the emission surface 11a includes not only the horizontal direction but also light emitted at an angle upward or downward from the horizontal direction. The light emitted upward or downward at a predetermined angle or more from the horizontal direction reaches the reflector 12, is reflected by the inner reflective surface, and is irradiated forward as reflected light. In this way, the use of the reflector 12 increases the light utilization efficiency.

[0034] The light-emitting element of the lamp unit LU1 is a light-emitting element that emits white light. The white light emitted from the light-emitting element and irradiated forward passes through the first cover member 110 made of a red translucent resin material, and is visually recognized as a single line of red light extending horizontally overall.

[0035] The vertical cross-sectional shape of the light guide 11 and the reflector 12 in the longitudinal direction is substantially the same no matter where in the longitudinal direction they are cut. The tail lamp TALE uses only a light emitting element (not shown) and one light guide 11 as light emitters, and is configured to emit uniform light without interruption, improving its design.

[0036] A lamp unit LU2 for the stop lamp is disposed in the chamber SP2 for the stop lamp. The lamp unit LU2 for the stop lamp has the same configuration as the lamp unit LU1 for the tail lamp, and only the length is different.

[0037] The lamp unit LU2 for a tail lamp includes a light guide 21 and a reflector 22. White light incident on the light guide 21 from a light emitting element (not shown) is reflected by the reflective surface 11b due to steps formed on the light guide 21, and is emitted forward from the emission surface 20a through a first cover member 110 made of a red light-transmitting resin member, and is visually recognized as red light. The reflector 22 holds the light guide 21 at the bent portion, and reflects the light emitted from the light guide 21 forward with its inner reflective surface, thereby improving the light utilization efficiency.

[0038] The stop lamp chamber SP2 is shorter in the vehicle width direction than the tail lamp chamber SP1, and the light guide 21 and the reflector 22 have lengths suited to the chamber SP2.

[0039] A turn signal lamp unit LU3 is disposed in the turn signal lamp chamber SP3.

[0040] The lamp unit LU3 includes a light emitting element 31, a reflector 32, a transparent or semi-transparent projection lens 33, and a support member 34 that supports these elements.

[0041] The light emitting element 31 is a white LED light source, and is attached to the bottom surface of the support member 34 with the light emission direction facing downward.

[0042] The reflector 32 is configured to guide the light emitted from the light emitting element 31 to the projection lens 33, and has an inner surface that forms a predetermined reflecting surface 32a.

[0043] The projection lens 33 is, for example, a free-form lens whose front and rear surfaces have free-form shapes.

[0044] The light emitted from the light-emitting element 31 is reflected forward by the reflective surface 32a of the reflector 32, passes through the projection lens 33, and is emitted forward through the third cover member 130 made of an amber-colored translucent resin material, and is visible from the outside as amber-colored light.

[0045] In this embodiment, a projector type or a reflector type using a light guide is used for the lamp unit, but the present invention is not limited to this, and other conventionally known configurations may be used without any problem, and the type is not important.

[0046] (Lamp cover member 100) The lamp cover member 100 will be described in detail. Fig. 5 shows the lamp cover member 100 of the vehicle lamp 1. Fig. 5(A) shows the lamp cover member 100. Fig. 5(B) shows only the first cover member 110 and the third cover member 130. Fig. 5(C) shows only the second cover member 120. In reality, each member is integrally molded and cannot be separated, but for the sake of explanation, they are shown separated.

[0047] As described above, the lamp cover member 100 is a multi-color molded product in which the first cover member 110, the second cover member 120, and the third cover member 130 are integrally molded.

[0048] The first cover member 110 constitutes the outer lenses of the tail lamps TALE and the stop lamps STOP, and the third cover member 130 constitutes the outer lens of the turn signal lamps TURN.

[0049] The second cover member 120 is part of the frame and housing of the outer lens of each lamp, and is made up of a long frame 125 for the long tail lamp TALE, and branch portions 126 that form the frames for the stop lamp STOP and the turn signal lamp TURN.

[0050] A recess 117 for dividing an area for the tail lamps TALE and an area for the stop lamps STOP is formed extending horizontally in approximately the center of the first cover member 110. In order to divide the two lamp areas, the second cover member 120 is laminated as an elongated frame portion 125 filling this recess 117 (see also FIG. 4).

[0051] As shown in Fig. 3, the flange piece 101 provided above the lamp cover member 100 has a laminated structure in which the first flange piece 111 of the first cover member 110 is laminated on the back side and the second flange piece 121 of the second cover member 120 is laminated on the front side to be molded as an integral unit. A gate mark G is formed on the front surface of the second flange piece 121, which is the front side. Also, as shown in Fig. 5(B), a gate mark G is formed on the front surface of the first flange piece 111 of the first cover member 110. The gate mark G of the first flange piece 111 is laminated on the second flange piece 121, and is therefore concealed and cannot be seen from the outside.

[0052] The gate mark G is a direct gate mark, and a large injection mark with a relatively large diameter is formed. The gate mark G is also formed in the recess 117, and this direct gate mark is also laminated on the long frame portion 125 and cannot be seen from the outside. The gate mark SG shown in FIG. 5 is a side gate mark. The side gate marks are formed on the end faces of the third cover member 130 and the first cover member 110.

[0053] To mold the lamp cover member 100, first, the first cover member 110 and the third cover member made of a translucent resin material are primarily molded. At this time, the first cover member 110 is injection molded with direct gates provided at the positions of the first flange piece 111 and the recess 117. Next, the first cover member 110 is molded together with the second cover member 120 made of a non-translucent resin material, and the lamp cover member 100 in which each cover member is integrally molded is formed. At this time, the long frame portion 125 is mainly injection molded with a direct gate provided on the second flange piece 121, and the branch portion 126 is mainly injection molded with a side gate provided on the end face.

[0054] The lamp cover member of a long vehicle lamp is prone to molding defects due to the long flow length of the resin material during injection molding. In addition, the outer lens part is a multi-color molded product using a translucent resin material, and if molding defects cause uneven light transmission, the light distribution will be poor and the product will be defective.

[0055] For this reason, in this embodiment, a flange piece 101 for providing a gate during injection molding is provided on one longitudinal surface of the lamp cover member 100 to protrude therefrom, thereby allowing the resin material to be injected evenly in the longitudinal direction and preventing molding defects. The flange piece 101 can be provided freely in the longitudinal direction and can be provided appropriately in a location optimal for injection molding.

[0056] The upper surface of the vehicle lamp 1 is concealed by the vehicle body VB. A plurality of flange pieces 101 are provided in a substantially uniformly distributed manner in the non-design portion to improve molding precision. Because the flange pieces 101 are concealed by the vehicle body VB, a decrease in design due to the provision of the flange pieces 101 is suppressed. Because the flange pieces 101 are concealed, a process of cutting the flange pieces 101 is also unnecessary.

[0057] Moreover, the gate mark G is a direct gate mark with a relatively large diameter. Injection molding using a direct gate has the advantage of having less pressure loss because the gate is directly connected to the cavity space of the mold without using a runner. Since the volume of the long portion of the lamp cover member 100 of this embodiment is also large, the molding pressure is increased by using a direct gate for resin molding, and molding defects in long multi-color molded products are suppressed.

[0058] In this embodiment, a direct gate was primarily used for molding the long frame portion 125, which is long and prone to defects, and the first cover member 110, which requires molding precision, while a side gate, which is easier to mold, was primarily used for molding the branch portion 126 and the third cover member 130, which have shorter flow lengths. By using flange pieces, the molding method can be selected according to the shape and form of each part.

[0059] Direct gate marks are formed on the first flange piece 111 and the recess 117 of the first cover member 110, but both are layered on the first cover member 110 and are not visible. The second cover member 120, which is made of a translucent resin material and is long and has a large volume, is molded only by the direct gate. The molding pressure is high, and molding defects in the first cover member 110, which is made of a translucent resin material and has a large volume, are suppressed.

[0060] (Molds and molding process) The molding process of the lamp cover member 100 configured as above, mainly the two-color molding process by direct gate using the flange piece 101, will be described. Figures 6 and 7 are schematic diagrams of the molding die for the lamp cover member 100, and are explanatory diagrams showing the molding process. Figures 5 and 6 correspond to Figure 3, and the molding die is a cross section at a position corresponding to line III-III in Figure 2. Please also refer to Figure 5(B) and Figure 5(C), as the first cover member 110 shown in Figure 5(B) is a primary molded product and the second cover member 120 shown in Figure 5(C) is a secondary molded product.

[0061] 6(A), first, the fixed-side mold 60 and the primary movable-side mold 70 are arranged facing each other and then clamped. Since the first cover member 110 is molded first as the primary molded product, a molding space S1 corresponding to the shape of the first cover member 110 is defined inside the molds in the clamped state. In this embodiment, the back side of the first cover member 110 is molded by the molding surface of the fixed-side mold 60, and the front side is molded by the molding surface of the primary movable-side mold 70.

[0062] The primary movable mold 70 has a first direct gate mechanism 71. The first direct gate mechanism 71 has a gate 72, a resin flow path 73, and a gate pin 74.

[0063] The gate 72 opens into the molding space S1 at a position corresponding to the first flange piece 111 in the molding space S1.

[0064] The gate pin 74 is a rod-shaped member that can be moved toward and away from the gate 72 by a drive device (not shown), thereby opening and closing the gate 72.

[0065] The resin flow path 73 is a flow path for supplying the molten resin material to the molding space S1. The resin flow path 73 is heated by a heating device (not shown) and maintained at a high temperature. This prevents the molten resin material from solidifying in the resin flow path.

[0066] In the clamped state, the gate 72 is closed by a gate pin 74 .

[0067] 6(B), first, the gate pin 74 moves away from the gate 72, the gate 72 opens, and a red light-transmitting resin member heated to a predetermined melting temperature is injected into the molding space S1 to fill the molding space S1. After filling, the gate pin 74 moves to the gate 72, the gate 72 closes, and the resin member filled in the molding space S1 cools and hardens, and the first cover member 110 is molded.

[0068] Next, as shown in Fig. 6(C), the mold is opened and the primary movable mold 70 is separated. Since the gate pin 74 is closed to perform gate cutting, the first direct gate mechanism 71 is separated together with the primary movable mold 70, and the first cover member 110 remains attached to the fixed mold 60. A gate mark G caused by the first direct gate mechanism 71 is formed on the first flange piece 111 of the first cover member 110. By using the first direct gate mechanism 71 having the gate pin 74, the gate cutting process is unnecessary, and secondary molding can be performed successively.

[0069] 7(A), the secondary movable mold 80 is clamped to the fixed mold 60. Since the second cover member 120 is molded as a secondary molded product, a molding space S2 corresponding to the shape of the second cover member 120 is defined inside the mold in the clamped state with the first cover member 110, which is the primary molded product, inserted therein.

[0070] The secondary movable mold 80 has a second direct gate mechanism 81. The second direct gate mechanism 81 has a gate 82, a resin flow path 83, and a gate pin 84, and has a configuration substantially similar to that of the first direct gate mechanism 71, and detailed description of each element will be omitted.

[0071] The gate 82 opens into the molding space S2 at a position corresponding to the second flange piece 121 in the molding space S2.

[0072] 7(B), first, the gate pin 84 moves away from the gate 82, the gate 82 opens, and a non-transparent resin member heated to a predetermined melting temperature is injected into the molding space S2 to fill the molding space S2. The lower molding space S2 is filled with a resin member injected from another gate (not shown). After filling, the gate pin 84 moves to the gate 82, the gate 82 is closed, and the resin member filled in the molding space S2 cools and hardens, and the second cover member 120 is molded integrally with the first cover member 110, and the lamp cover member 100 is molded.

[0073] Next, as shown in Fig. 7(C), the mold is opened and the secondary movable side mold 80 is first separated. By closing the gate pin 84, a gate cut is performed, and the second direct gate mechanism 81 is separated together with the secondary movable side mold 80. A gate mark G by the second direct gate mechanism 81 is formed on the second flange piece 121 of the second cover member 120. The gate mark G formed on the first flange piece 111 is concealed by being laminated on the second flange piece 121. Thereafter, the molded lamp cover member 100 is removed by being pushed out by a push-out pin (not shown).

[0074] (Modification) The configuration of the present disclosure is not limited to the above. Modifications will be described with reference to Fig. 8. Components having equivalent configurations are given the same reference numerals and descriptions thereof will be omitted.

[0075] Fig. 8 shows a modified vehicle lamp 1a. Fig. 8(A) shows the vehicle lamp 1a, and Fig. 8(B) shows the lamp cover member 100a. Fig. 8(C) shows the first cover member 110a and the third cover member 130, which are primary molded products. Fig. 8(D) shows the second cover member 120a.

[0076] The vehicle lamp 1a includes a lamp cover member 100a and a lamp body 50a. The lamp cover member 100a is a multi-color molded product in which a first cover member 110a, a second cover member 120a, and a third cover member 130 are integrally molded.

[0077] As shown in Fig. 8(B), the vehicle lamp 1a includes flange pieces 101b, 101c, and 101d, which are formed by stacking a first cover member 110a and a second cover member 120a and are provided to protrude upward from the upper surface. First flange pieces 111a and 111e are provided to protrude as part of the first cover member 110a. Second flange pieces 121a and 121e are provided to protrude as part of the second cover member 120a.

[0078] That is, the first flange pieces 111a, 111b, 111c, 111d, and 111e provided on the first cover member 110a and the second flange pieces 121a, 121b, 121c, 121d, and 121e provided on the second cover member 120a are not necessarily stacked, but some of the flange pieces are stacked and the other flange pieces are not stacked and are shifted from each other in the longitudinal direction. In this way, the flange pieces do not necessarily need to be stacked, and may be provided at positions suitable for injection molding on the same side in the longitudinal direction of the lamp cover member according to the shapes of the first cover member and the second cover member.

[0079] Also, in the second flange piece 121c, a gate mark SG by a side gate is formed on the end face instead of a direct gate mark on the front face. The form of the gate provided in the flange piece during injection molding is not limited to a direct gate, and a suitable gate form may be selected according to each shape and form, for example, a side gate may be used in a narrow portion where molding pressure is not required.

[0080] The flange piece 101b is formed wide, and the second flange piece 121b is formed by stacking the first flange piece 111b, but the gate marks G of each are shifted and do not overlap. In this way, it is not necessary to provide the gate at the same position, and the gate positions may be shifted on the same flange piece.

[0081] The flange piece 101d has a through hole formed in its center. The flange piece 101d is a clamp piece for mounting the vehicle lamp 1a, and the mounting clamp 40 is inserted into the through hole to mount the vehicle lamp 1a to the vehicle body VB. In this way, when the mounting clamp piece is provided so as to protrude from the lamp cover member, the clamp piece may be used as a flange piece for the gate.

[0082] By using flange pieces and gates suitable for injection molding in accordance with the respective shapes and configurations of the first cover member 110a and the second cover member 120a, the occurrence of molding defects can be suppressed.

[0083] The above describes preferred embodiments of the present invention. However, the above embodiments are merely examples of the present invention, and these can be combined based on the knowledge of those skilled in the art, and such forms are also included in the scope of the present invention. [Explanation of symbols]

[0084] 1: Vehicle lighting fixtures 1a: Vehicle lighting fixture 53: Clamp piece 100: Lighting cover material 101: Flange piece 110: First cover member 111: First flange piece 120: Second cover member 121: Second flange piece CAR: Vehicle G: Gate mark SG: Gate mark

Claims

1. A lamp cover member that forms part of a housing of an elongated vehicle lamp that is formed long in at least one direction, A first cover member made of a light-transmitting resin material molded to be elongated in at least one direction; a second cover member that is made of a non-translucent resin material and is partially laminated on the front surface of the first cover member and is integrally molded with the first cover member; Equipped with A plurality of first flange pieces are provided along a first side surface in a longitudinal direction of the first cover member, and the plurality of first flange pieces are provided protruding laterally in the longitudinal direction of the first cover member, A plurality of second flange pieces are provided along a second side surface in a longitudinal direction of the second cover member, and the plurality of second flange pieces are provided so as to protrude laterally in the longitudinal direction of the second cover member, The first side surface of the first cover member and the second side surface of the second cover member are side surfaces in the same longitudinal direction, and a gate mark is formed on each of the plurality of first flange pieces and the plurality of second flange pieces. A lamp cover member characterized by the above.

2. The gate marks formed on the plurality of first flange pieces of the first cover member are all direct gate marks.

2. The lamp cover member according to claim 1.

3. At least a portion of the second flange pieces includes a flange piece provided by stacking on the first flange piece.

3. The lamp cover member according to claim 1 or 2.

4. A clamp piece for mounting is formed on the second side surface of the second cover member so as to protrude laterally.

4. The lamp cover member according to claim 1, wherein the lamp cover member is a light-receiving member.

5. A gate mark is formed on at least a part of the clamp piece formed on the second cover member.

5. The lamp cover member according to claim 4.

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