JP2009023247A - Method for producing injection-molded article, method for producing lamp body, apparatus for producing lamp body, and lamp body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing an injection-molded article which can constitute a partially fabricated article from two kinds of materials, a method for producing a lamp body which can produce the lamp body having a shading region while saving time and labor, an apparatus for producing the lamp body, and the lamp body which can surely secure the shading domain. <P>SOLUTION: In the lamp body 1 having a lens part 2 and a housing 4, the shading part 2d is formed in a part of the lens part 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an injection molded body manufacturing method, a casing manufacturing method, a casing manufacturing apparatus, and a casing.

Conventionally, various vehicle lamps such as side turn lamps mounted on vehicles and the like are known (see, for example, Patent Document 1). The vehicle lamp includes a lens portion and a housing. Here, in general, the lens portion is formed of a transparent resin material, and light from a light bulb or LED attached to the housing is transmitted through the lens portion to confirm the blinking state of the lamp.
JP 2002-46141 A

  By the way, although the light from the vehicle lamp described above is transmitted and diverged through the lens unit, there are cases where the driver feels dazzled by capturing the light in the field of view. In order to solve this problem, a light shielding region is formed by covering the vehicle lamp with a cover body or attaching a masking tape or the like. However, in the above-described measures, there are problems that the cover body and the masking tape may fall off over time, and it takes time and effort in the manufacturing process.

  The present invention has been made in view of the above circumstances, and a manufacturing method of an injection-molded body in which one semi-finished product can be composed of two kinds of materials, a casing having a light-shielding region without taking time and effort. It is an object of the present invention to provide a casing manufacturing method, a casing manufacturing apparatus, and a casing capable of reliably securing a light shielding region.

  In order to solve the above-mentioned problem, the invention described in claim 1 is the same mold, wherein a plurality of semi-finished products are respectively molded by primary injection, and the molded semi-finished products are held in a mold. In the manufacturing method of an injection molded body that is secondarily injected into the butted portion and integrally molded after the butting, the material is injected so as to form a recess in at least one part of the semi-finished product at the time of the first injection. In the secondary injection, the semi-finished product is formed by injecting another material into the recessed portion.

  According to the second aspect of the present invention, the lens part and the housing are respectively molded by primary injection, the molded lens part and the housing are butted, and then secondarily injected to the butted part and integrally molded. In the housing manufacturing method, a concave portion is formed in a part of the lens portion at the time of the primary injection, and a light shielding material is injected into the concave portion at the time of the secondary injection to form a lens portion having the light shielding portion. It is characterized by that.

  The invention described in claim 3 is characterized in that the light shielding portion and the housing are made of the same material.

  According to a fourth aspect of the present invention, the light shielding part is formed on the lens part, and the lens part and the housing are integrally molded by the secondary injection simultaneously to the concave part and the butting part. It is characterized by that.

  The invention described in claim 5 includes a mold for injection molding the lens portion and a mold for injection molding the housing, and the lens portion and the housing are respectively molded by primary injection, After the molded lens part and the housing are butted together, a concave part is formed in a part of the lens part in the housing manufacturing apparatus that is configured to be integrally molded by secondary injection to the butted part. A first molding die for molding and a second molding die for molding the lens portion by being injected into the recessed portion.

  The invention described in claim 6 is characterized in that, in a housing including a lens portion and a housing, a light shielding portion is formed in a part of the lens portion.

  The invention described in claim 7 is characterized in that the light shielding portion and the housing are formed of the same material.

  According to the first aspect of the present invention, when manufacturing a semi-finished product, a concave portion is formed in a part of the semi-finished product, and another material is injected into the concave portion to manufacture the semi-finished product. There exists an effect which can manufacture the injection molded object provided with the semi-finished product comprised with the material of. In addition, a desired semi-finished product can be obtained by forming a recessed part at the time of primary injection in the manufacturing process of a semi-finished product and pouring an injection material into the recessed part at the time of secondary injection. There exists an effect which can manufacture the injection molded object provided with the semi-finished product comprised with the material.

  According to the second aspect of the present invention, when the lens portion is manufactured, the concave portion is formed in a part of the lens portion, and the light shielding material is injected into the concave portion to manufacture the lens portion. There is an effect that it is possible to manufacture a casing having a lens portion in which is reliably secured. In addition, since a concave portion is formed at the time of primary injection in the manufacturing process of the lens portion, and a desired lens portion can be obtained by pouring an injection material into the concave portion at the time of secondary injection, a light-shielding region can be formed without taking time and effort. There exists an effect which can manufacture the housing which it had.

  According to the invention described in claim 3, since the types of the injection material used for the housing can be reduced, there is an effect that the material cost and the cost for the manufacturing apparatus can be reduced.

  According to the invention described in claim 4, since the light shielding material is secondarily injected simultaneously into the recessed portion and the butting portion, the formation of the light shielding portion and the integral molding of the lens portion and the housing are performed simultaneously. There is an effect that the casing can be efficiently manufactured without increasing the number of steps.

  According to the fifth aspect of the present invention, a casing having a light-shielding portion can be manufactured simply by adding a first molding die to a conventional manufacturing apparatus for integrally molding a casing. There is an effect that can be realized without costing the manufacturing apparatus. In addition, since the housing having the light shielding portion can be automatically manufactured in the manufacturing apparatus, there is an effect that a high-quality housing can be obtained without touching the hands of the workers.

  According to the invention described in claim 6, the light is diffused only in the direction in which the light is required by the light shielding portion formed in a part of the lens portion, and the light is blocked in the area where the light is not required. Can do. In addition, since the light shielding portion is formed as a part of the lens portion, there is an effect that the light shielding region can be reliably ensured.

  According to the invention described in claim 7, since the types of the injection material used for the housing can be reduced, there is an effect that the material cost and the cost for the manufacturing apparatus can be reduced.

Next, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a description will be given of a case where a vehicle lamp is manufactured using a film forming apparatus.
As shown in FIG. 1, the vehicle lamp 1 includes a lens unit 2 and a housing 4 in which a light bulb 3 is incorporated. The lens unit 2 and the housing 4 are formed as primary products which are half-divided products by primary injection with the movable mold 51 and the fixed mold 52, respectively, and the movable mold 51 is slid to form the inner surface of the housing 4. The movable mold 51 is slid and the primary products are brought into contact with each other, and the resin material is secondarily injected into the butt portion 5 to be integrally molded.

  As shown in FIG. 2, the light bulb 3 is disposed in the hollow portion 6 constituted by the lens portion 2 and the housing 4. A conductive terminal 7 is connected to the light bulb 3. Further, the terminal 7 is disposed in a socket portion 8 formed at a substantially central portion of the back surface 27 of the housing 4, and a tip portion 7 b of the terminal is exposed in the socket portion 8.

  The lens portion 2 has a substantially elliptical shape in plan view, is formed in a bowl shape, and is joined to the housing 4 at the opening peripheral edge portion 2a. Here, a concave portion 2c is formed on a part of the surface 2b of the lens portion 2 (one end in the long diameter direction of the lens portion 2). The concave portion 2c is filled with a light shielding material so that the surface 2b of the lens portion 2 is smooth, and is formed as a light shielding portion 2d. Here, other than the light shielding part 2 d in the lens part 2, for example, it is made of a transparent acrylic resin, and the light shielding part 2 d is made of the same light shielding polycarbonate resin as the material of the housing 4. The light shielding part 2d may be made of a light shielding material different from that of the housing 4.

  On the other hand, the housing 4 is integrally formed with a pedestal portion 21 to which the light bulb (bulb) 3 is attached and a flange portion 22 extending in the horizontal direction (left-right direction) from the outer peripheral edge of the pedestal portion 21. The end portion 22 a of the flange portion 22 is joined to the lens portion 2. The housing 4 is made of, for example, a polycarbonate resin as described above. The light bulb 3 may be an LED.

  Then, in a state where the lens portion 2 and the housing 4 are abutted against each other, a resin material is secondarily injected into the abutting portion 5 to integrally mold the vehicle lamp 1. Here, the resin material of the abutting portion 5 is made of the same material as that of the housing 4. In the present embodiment, the resin material of the butt portion 5 is made of polycarbonate resin. Note that the abutting portion 5 may employ the same material as the lens portion 2.

Next, the manufacturing apparatus 50 for forming the vehicle lamp 1 into a film will be described.
As shown in FIG. 3, the manufacturing apparatus 50 mainly includes a movable mold 51 and a fixed mold 52. The movable mold 51 is formed with a molding mold surface 53 for forming the lens portion 2 and a molding mold surface 54 for forming the housing 4. The fixed mold 52 is formed with the lens portion 2. A molding die surface 55 for molding the concave portion 2c, a molding die surface 56 for molding the lens unit 2, a molding die surface 57 for molding the housing 4 and the film forming apparatus 40 are accommodated. A film forming mold surface 58 for this purpose is formed. The mold surfaces 53 to 57 and the film forming mold surface 58 are detachably attached to the movable mold 51 and the fixed mold 52, respectively.

  Here, a cavity is formed on the molding die surface 55 so as to follow the shape of the recessed portion 2 c of the lens portion 2. Further, a cavity is formed on the molding die surface 56 so as to follow the shape of the surface 2b of the lens portion 2.

Further, the movable mold 51 is configured such that movement of the molds in the approaching / separating direction and movement along the mold surface can be performed by an actuator (servo motor or cylinder) (not shown).
Further, pipes (valve gates) 75 for supplying an injection material into the cavity when injection molding is performed on each mold surface are provided at various places.

  The film forming apparatus 40 is a known vacuum evaporation apparatus, a film forming mold surface 58, a vacuum pump 41 for evacuating the film forming space, a vacuum channel 43 connected to the vacuum pump 41 via a valve 42, and evaporation. A boat (target) 44 into which a metal (for example, aluminum or chrome) is placed, a heater 45 for heating the boat 44, a power source 46 for the heater 45, and the like are provided.

Next, a film forming apparatus 10 for forming a film for the vehicle lamp 1 will be described with reference to FIG.
As shown in FIG. 4, the film forming apparatus 10 has a manufacturing apparatus 50 disposed in a housing 11. The manufacturing apparatus 50 includes a movable mold 51 and a fixed mold 52. A mold clamping device 70 having a toggle mechanism for clamping the movable mold 51 and the fixed mold 52 is connected to the movable mold 51 of the manufacturing apparatus 50.

  An air conditioner 77 for air conditioning / ventilating the inside of the housing 11 is attached to the upper surface of the housing 11, and an air outlet provided at a lower portion of the air conditioner 77 in an opening 76 formed in the housing 11. 78 is inserted through the casing 11 so that conditioned air can be blown out. An inspection port 12 is appropriately provided on the side surface of the housing 11. For example, the inspection port 12 is provided at a position corresponding to the side surface of the manufacturing apparatus 50 and can be easily opened and closed. Here, the inspection port 12 is preferably of a type that can ensure airtightness.

Further, on the side surface of the housing 11, the vicinity of the position corresponding to the manufacturing apparatus 50 or the like is preferably made of transparent glass or the like so that the inside of the housing 11 can be visually recognized.
In addition, an injection material supply device 81 in which a resin material for injection molding is accommodated, a vacuum pump 41 for film formation, and a power source 46 are disposed in the vicinity of the side portion of the housing 11.

  The mold clamping device 70 includes a drive unit 71 and an arm unit 72. A control unit or the like is accommodated in the drive unit 71 connected to one end of the arm unit 72, and the arm unit 72 is configured to move by a signal from the control unit. A movable mold 51 is connected to the other end of the arm portion 72. When the arm portion 72 is movable, the movable mold 51 is moved together, and the movable mold 51 and the fixed mold 52 can be clamped.

  The injection material supply device 81 is disposed outside the casing 11 and is provided in the middle of the tank 89 that contains the material, the supply pipe 90 that supplies the material to the cavity formed in the mold, and the supply pipe 90. And a valve 91 configured to be able to open and close the supply path. The supply pipe 90 penetrates the casing 11 in the middle thereof, is led into the casing 11, and is connected to a pipe (valve gate) 75 provided in each mold so that the material can be supplied into each cavity. It is configured. The material accommodated in the tank 89 is opened through a supply pipe 90 and a pipe (valve gate) 75 provided in the mold after the valve 91 is opened according to an instruction from a control unit (not shown). It is supplied into the mold cavity and is configured to be capable of primary injection and secondary injection. When injection molding is performed using a plurality of materials, the injection material supply device 81 is provided with a device for each type of material.

  A vacuum pump 41 and a power supply 46 provided in the film forming apparatus 40 are disposed outside the housing 11, and the vacuum pump 41 penetrates the housing 11 in the middle of the vacuum flow path 43 connected thereto, and the housing 11 and is connected to a space for film formation. In addition, a wiring is connected to the power source 46, and the wiring passes through the housing 11 and is connected to the heater 45. Note that the vacuum pump 41 and the power source 46 may be disposed in the housing 11.

  Next, the process of forming the vehicle lamp 1 into a film will be described with reference to FIGS. Note that while the film forming apparatus 10 is in operation, the air conditioner 77 is also operating in conjunction with the inside of the housing 11 as a clean room.

  As shown in FIG. 5A, the movable mold 51 is arranged so that the molding die surface 53 faces the molding die surface 55 of the fixed mold 52.

  As shown in FIG. 5B, the movable mold 51 is moved in the direction of the fixed mold 52 so that the toggle mechanism functions between the movable mold 51 and the fixed mold 52 by the mold clamping device 70. Clamp the mold. In this state, a material (for example, transparent acrylic resin) constituting the lens unit 2 is primarily injected. Here, at the time of primary injection, the material supplied from the injection material supply device 81 is supplied to a cavity for molding the lens unit 2 through a pipe (valve gate) 75.

  As shown in FIG. 6C, after the primary injection of the lens unit 2 is completed, the movable mold 51 is moved in the mold opening direction. At this time, the lens unit 2 is designed so as to remain on the movable mold 51 side. Here, the lens part 2 in the state in which the recessed part 2c is formed is molded.

  As shown in FIG. 6D, the movable mold 51 is moved in the direction along the mold surface (horizontal direction) so that the molding mold surface 54 faces the molding mold surface 57 of the fixed mold 52. Deploy.

  As shown in FIG. 7E, the movable mold 51 is moved in the direction of the fixed mold 52 so that the toggle mechanism functions between the movable mold 51 and the fixed mold 52 by the mold clamping device 70. Clamp the mold. In this state, the material constituting the housing 4 (for example, polycarbonate resin) is primarily injected. Here, at the time of the primary injection, the material supplied from the injection material supply device 81 is supplied to the cavity for molding the housing 4 through the pipe (valve gate) 75.

  As shown in FIG. 7F, after the primary injection of the housing 4 is completed, the movable mold 51 is moved in the mold opening direction. At this time, the housing 4 is designed so as to remain on the movable mold 51 side. The lens unit 2 is designed so as to remain on the fixed mold 52 side.

  As shown in FIG. 8G, the movable mold 51 is moved in the direction along the mold surface (horizontal direction) so that the molding mold surface 54 (housing 4) is the film forming mold surface 58 of the fixed mold 52. It arrange | positions so that it may oppose.

  As shown in FIG. 8H, a movable mold 51 is moved in the mold clamping direction to form a molding mold surface 54 on which the housing 4 is molded and a film forming mold surface 58 in which the film forming apparatus 40 is built. After the sealed film formation space is formed, the valve 42 is opened, and the air in the film formation space is extracted from the vacuum flow path 43 by the vacuum pump 41, so that the film formation space is brought into a vacuum state.

  In this state, the film forming material disposed on the boat 44 is melted and vaporized by the heater 45 heated by the power source 46. Then, the surface exposed from the film forming mold surface 58 in the housing 4 is formed by the film forming material made of the vaporized metal material, and the film forming surface 66 is formed. In the film forming process, the member incorporating portion 67 is masked with a masking material (not shown) so that the film forming surface 66 is not formed. For example, aluminum is used as the film forming material.

  As shown in FIG. 9I, after the film formation is completed, the movable mold 51 is moved in the mold opening direction to separate the housing 4 from the film forming mold surface 58.

  As shown in FIG. 9 (J), the movable mold 51 is arranged so that the molding mold surface 54 (housing 4) on the movable mold 51 side and the molding mold surface 56 (lens portion 2) of the fixed mold 52 face each other. The mold 51 is moved in a direction (horizontal direction) along the mold surface. Then, the light bulb 3 and the terminal 7 are assembled into the member incorporating portion 67 of the housing 4 from a member incorporating device (not shown). In addition, you may perform the timing which incorporates a member, before arrange | positioning in the position where the lens part 2 and the housing 4 oppose.

  As shown in FIG. 10 (K), the movable mold 51 is moved in the direction of the fixed mold 52 and clamped, and in this clamped state, the concave portion 2c of the lens section 2 and the lens section 2 and the housing 4 are fixed. The resin material is secondarily injected into the abutting portion 5 for integral molding. Here, the resin material is supplied from the injection material supply device 81. The resin material supplied here is the same light-shielding polycarbonate resin as the housing 4.

As shown in FIG. 10L, the movable mold 51 is moved in the mold opening direction, and the vehicle lamp 1 is taken out by an unillustrated pushing member. At this time, when the butting portion 5 is ejected, the runner portion formed on the side of the vehicle lamp 1 is cut out by a cutting device (not shown). And the movable lamp | ramp 51 is again moved to the state of FIG. 5 (A), The vehicle lamp 1 can be manufactured continuously by repeating the above-mentioned series of processes.
By this method, the vehicle lamp 1 in which the light shielding portion 2d is formed in the concave portion 2c of the lens portion 2 can be obtained.

  According to the present embodiment, in the vehicular lamp 1 including the lens unit 2 and the housing 4, the light shielding unit 2 d is formed on a part of the lens unit 2.

  As described above, since the light shielding part 2d is formed in a part of the lens part 2, it is possible to diverge light only in a direction that requires light and to block light in an area that does not require light. In addition, since the light shielding portion 2d is formed as a part of the lens portion 2, unlike a conventional countermeasure using a masking tape or the like, the light shielding region can be reliably ensured without deterioration over time.

  The light shielding part 2d and the housing 4 are made of the same material.

  Since it comprised in this way, the kind of injection material used for the lamp | ramp 1 for vehicles can be decreased, and the expense concerning material cost and a manufacturing apparatus can be reduced.

  Further, the lens part 2 and the housing 4 are respectively molded by primary injection, the molded lens part 2 and the housing 4 are butted together, and then the secondary injection is made to the butted part 5 so as to be integrally molded. In the method for manufacturing the vehicular lamp 1, the concave portion 2c was formed in a part of the lens portion 2 at the time of primary injection, and the light shielding material was injected into the concave portion 2c at the time of secondary injection to manufacture the lens portion 2.

  Thus, when manufacturing the lens part 2, the concave part 2c is formed in a part of the lens part 2, and the light shielding material is injected into the concave part 2c to manufacture the lens part 2, so that the light-shielding region is surely provided. The vehicular lamp 1 having the lens part 2 secured in the above can be manufactured. Further, in the manufacturing process of the lens part 2, the desired lens part 2 can be obtained by forming the concave part 2c at the time of primary injection and pouring the injection material into the concave part 2c at the time of secondary injection. Thus, the vehicular lamp 1 having the light shielding area can be manufactured.

  Further, the concave part 2c and the butting part 5 between the lens part 2 and the housing 4 are simultaneously subjected to secondary injection to form the light-shielding part 2c in the lens part 2, and the lens part 2 and the housing 4 are integrally molded. I made it.

  Since it comprised in this way, the light-shielding material (resin material) is simultaneously injected into the butt | matching part 5 of the recessed part 2c, the lens part 2, and the housing 4 simultaneously, and formation of the light-shielding part 2d and the lens part 2 and the housing 4 are carried out. Thus, the vehicle lamp 1 can be efficiently manufactured without increasing the number of manufacturing steps.

  And in the manufacturing apparatus 50 of the vehicle lamp 1 provided with the metal mold | die for inject-molding the lens part 2, and the metal mold | die for inject-molding the housing 4, the recessed part 2c in a part of the lens part 2 is provided. And a molding die 56 for manufacturing the lens part 2 by being injected into the recessed part 2c.

  Since it comprised in this way, the vehicle lamp 1 which has the light-shielding part 2d can be manufactured only by adding the shaping | molding metal mold | die 55 to the manufacturing apparatus for integrally forming the conventional vehicle lamp 1 and manufacturing. This can be realized without cost for the device 50. Moreover, since the vehicle lamp 1 having the light shielding part 2d can be automatically manufactured in the manufacturing apparatus 50, the high-quality vehicle lamp 1 can be obtained without touching the hands of the workers.

  In addition, since the material of the housing 4, the butting portion 5 and the light shielding portion 2d is formed of the same material, the light shielding portion 2d is more integrally formed, so that the vehicle has the light shielding portion 2d that can withstand long-term use. The lamp 1 can be provided.

  The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, a specific configuration such as the shape of each member constituting the boat is not limited to the above embodiment, and can be changed as appropriate.

  For example, in the present embodiment, the molded lens part and the housing do not have a complicated shape, and have been described in the case of a shape that can be easily removed when extruded from each molding die surface. If there is a shape part and it cannot be removed from the mold surface even if it is extruded from each mold surface, each mold is placed in a direction perpendicular to the direction in which the adjacent mold surfaces are arranged. It may be configured so that it can be divided into two at a substantially central portion in plan view of the surface, and an injection molded part may be taken out.

  Further, in the present embodiment, the step of injecting into the recessed portion to form the light shielding portion is performed at the same time as the secondary injection to the butted portion 5 between the lens portion and the housing, but at the same time as the step of performing the primary injection of the housing, The light shielding portion may be formed by emitting the light into the concave portion of the lens portion.

  Furthermore, in the present embodiment, the case where the pipe for injecting the light shielding part of the lens part and the pipe for injecting the butted part of the lens part and the housing are provided and emitted is described, but as shown in FIG. The pipe structure for injecting the light shielding part and the pipe for injecting the abutting part may be a common pipe so that the light shielding part and the abutting part are simultaneously ejected.

It is a perspective view of the lamp for vehicles in the embodiment of the present invention. It is sectional drawing which follows the AA line of FIG. It is a schematic block diagram of the manufacturing apparatus in embodiment of this invention. It is a schematic block diagram of the film-forming apparatus in embodiment of this invention. It is explanatory drawing which shows the manufacturing process of the lamp for vehicles in embodiment of this invention. It is explanatory drawing which shows the continuation of FIG. It is explanatory drawing which shows the continuation of FIG. It is explanatory drawing which shows the continuation of FIG. It is explanatory drawing which shows the continuation of FIG. FIG. 10 is an explanatory diagram showing a continuation of FIG. 9. It is a schematic block diagram of the manufacturing apparatus which shows another aspect in embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp (casing) 2 ... Lens part 2c ... Concave part 2d ... Light-shielding part 4 ... Housing 5 ... Butting part 50 ... Manufacturing apparatus 55 ... Molding surface (1st molding die) 56 ... For molding Mold surface (second mold)

Claims (7)

In the same mold, a plurality of semi-finished products are respectively molded by primary injection, the molded semi-finished products are butted against each other while being held in the mold, and then injected into the butted portion and integrally molded. In the method for producing a molded body,
At the time of the primary injection, a material is injected so as to form a recess in a part of at least one of the semi-finished products, and at the time of the secondary injection, another material is injected into the recess to form the semi-finished product. A method for producing an injection-molded article. In the manufacturing method of the housing, in which the lens part and the housing are respectively molded by primary injection, the molded lens part and the housing are butted together, and then are secondarily injected into the butted part and integrally molded.
A casing having a light-shielding material formed by forming a concave portion in a part of the lens portion at the time of the primary injection and injecting a light-shielding material into the concave portion at the time of the secondary injection. Manufacturing method.   The method for manufacturing a housing according to claim 2, wherein the light shielding portion and the housing are made of the same material.   The second light emitting unit simultaneously injects into the recessed part and the butting part, so that the light shielding part is formed in the lens part, and the lens part and the housing are integrally molded. 3. A method for producing the casing according to 3. A mold for injection molding the lens part, and a mold for injection molding the housing,
The lens part and the housing are respectively molded by primary injection, the molded lens part and the housing are butted together, and then the secondary part is injected into the butted part so as to be integrally molded. In manufacturing equipment,
A first molding die for forming a concave portion in a part of the lens portion; and a second molding die for injecting the concave portion into the lens portion. An apparatus for manufacturing a casing characterized by the above. In a housing provided with a lens part and a housing,
A housing having a light shielding portion formed on a part of the lens portion. The housing according to claim 6, wherein the light shielding portion and the housing are formed of the same material.

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