WO2020100413A1

WO2020100413A1 - Cover body

Info

Publication number: WO2020100413A1
Application number: PCT/JP2019/036382
Authority: WO
Inventors: 小林　正幸; 剛直吉村
Original assignee: 株式会社小糸製作所
Priority date: 2018-11-15
Filing date: 2019-09-17
Publication date: 2020-05-22
Also published as: JPWO2020100413A1

Abstract

A vehicle cover body (30) that is made from plastic and is a multicolored molded product comprising at least a first cover member (32) that transmits infrared light and blocks visible light and a second cover member (34) that has been integrally formed with the first cover member (32) and transmits light differently from the first cover member (32), wherein the first cover member (32) includes a colorant that transmits infrared light and blocks visible light.

Description

Cover body

The present invention relates to an in-vehicle cover body made of resin.

Patent Document 1 discloses a rearview mirror with a surveillance camera that enables imaging with infrared rays. In the rearview mirror, a camera is provided inside the housing, and a part of the housing is provided with a light source cover portion formed of a resin that blocks visible light and transmits infrared light. In addition, a plurality of infrared light emitting diodes are arranged inside the housing at a position corresponding to the light source cover.

Japanese Patent No. 4504085

When attaching a LiDAR, an infrared sensor, an infrared camera, an infrared light device, etc. to an automobile lamp, an automobile body, a door mirror, etc., it is necessary to prevent internal parts from being exposed to human eyes from a technical or design viewpoint. Desired. As a blind for the internal parts, it is possible to cover them with colored parts.

The above-mentioned colored parts are capable of transmitting visible light while blocking the visible light while allowing light emitted or received by the LiDAR, infrared sensor, infrared camera, infrared lamp, etc. Is required. Further, since it is considered that the above-mentioned colored parts are attached to a lighting device for a car, a car body, a door mirror, etc., appearance design and functions other than the above are also important.

An object of the present invention is to provide a cover body that has both a blinding of internal parts and transparency of infrared light, while having a unified design and the possibility of providing various functions.

In order to achieve the above object, the cover body of the present invention,
(1) a first cover member that transmits infrared light and blocks visible light;
A vehicle-made cover body made of resin, which is a multicolor molded product having at least a second cover member that is integrally formed with the first cover member and has a different light transmittance from the first cover member. hand,
The first cover member contains a colorant that transmits infrared light and blocks visible light.

(2) Further, the cover body described in (1) is
The colorant is preferably a dye.

(3) Further, the cover body described in (2) is
It is preferable that the dye is an anthraquinone dye, an azo dye, a pyrazolone dye, a quinophthalone dye, a methine dye, a coumarin dye, or a combination thereof.

(4) Further, the cover body according to any one of (1) to (3),
It is preferable that the second cover member is a member having higher strength than the first cover member.

(5) Further, the cover body according to any one of (1) to (4),
It is preferable that the second cover member is an opaque member.

(6) Further, the cover body according to any one of (1) to (4),
It is preferable that the second cover member is a transparent member.

(7) Further, the cover body according to any one of (1) to (6),
Further comprising a third cover member integrally formed with the first cover member and the second cover member, the first cover member and the second cover member different in light transmittance from the second cover member,
It is preferable that the third cover member is a transparent member or an opaque member.

(8) Further, the cover body according to any one of (1) to (7),
The second cover member is configured such that, in a state where the cover body is mounted on a vehicle, infrared light emitted from a light emitting unit mounted on the vehicle can pass through the first cover member. Preferably, it is formed integrally with the first cover member.

According to the present invention, it is possible to provide a cover body that has both a blindness of internal parts and infrared light transmissivity while having a unified design and the possibility of providing various functions.

It is a plane schematic diagram which shows a vehicle. It is a fragmentary sectional view showing a part of interior of a door mirror. It is a perspective view which shows a cover body. It is a bottom view of a cover body. It is a perspective view which shows another example of a cover body. It is a cross-sectional schematic diagram which shows the inside of the right front lamp device. It is a cross-sectional schematic diagram which shows the inside of the right front lamp apparatus of another example. It is a figure which shows the light transmission spectrum of a resin material.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The dimensions of each member shown in the drawings may be different from the actual dimensions of each member for convenience of description.

In addition, in the description of the present embodiment, for convenience of description, “horizontal direction”, “front-back direction”, and “vertical direction” are referred to as appropriate. These directions are relative directions set for the vehicle shown in FIG. Here, the “vertical direction” is a direction including “upward direction” and “downward direction”. The “front-rear direction” is a direction including the “front direction” and the “rear direction”. The “left-right direction” is a direction including the “left direction” and the “right direction”.

FIG. 1 is a schematic diagram showing a plan view of a vehicle 1 according to the embodiment. The vehicle 1 includes a front lamp device 10F (refers to a left front lamp device 10LF and a right front lamp device 10RF), a rear lamp device 10B (refers to a left rear lamp device 10LB and a right rear lamp device 10RB), and

side mirrors

20L and 20R. I have it.

(First embodiment)
First, the first embodiment will be described with reference to FIGS. FIG. 2 is a partial cross-sectional view showing the internal structure of a part of the side mirror 20R provided on the right side of the vehicle 1. FIG. 3 is a perspective view showing the cover body. FIG. 4 is a bottom view of the cover body.

As shown in FIG. 2, the side mirror 20R according to the first embodiment includes a housing 22, a cover body 30, and a sensor cover 24. The housing 22, the cover body 30, and the sensor cover 24 define an inner chamber 26 (an example of a housing space) of the side mirror 20R. The side mirror 20R includes a lamp 40 (an example of a light emitting portion) inside the inner chamber 26, a lamp housing 42, and a sensor 50. The lamp 40 is arranged inside the lamp chamber 28 defined by the lamp housing 42 and the cover body 30. The lamp chamber 28 may be configured as a partially opened space.

The lamp 40 includes a light source and an optical system. Examples of the light source include a lamp light source that emits infrared light and a semiconductor light emitting element. Examples of lamp light sources include incandescent lamps, halogen lamps, discharge lamps, neon lamps and the like. Examples of the semiconductor light emitting element include a light emitting diode, a laser diode, an organic EL element and the like. The optical system includes at least one of a lens and a reflector. The light emitted from the light source passes through the optical system and is emitted from the lamp 40. The lamp 40 is configured to emit light downward.

The sensor 50 is configured to be able to detect infrared light. Examples of the sensor 50 include a camera (CCD camera, CMOS camera, etc.), LiDAR, and the like.

The cover body 30 is arranged at a lower position of the lamp 40, and is connected to the housing 22, the sensor cover 24, and the lamp housing 42 by a connecting member (not shown). The housing may be arranged between the cover body 30 and the sensor cover 24, and the cover body may be connected only to the housing.

The sensor cover 24 is arranged at a lower position of the sensor 50, and is connected to the housing 22 and the sensor cover 24 by a connecting member (not shown). The sensor cover 24 is configured to be able to transmit infrared light traveling from the outside to the inside of the inner chamber 26. It should be noted that the sensor cover 24 is not provided and the receiving portion (not shown, for example, a camera lens) of the sensor 50 is exposed from a part of the housing 22 so that the sensor can detect infrared light outside the inner chamber 26. It may be in any mode.

The cover body 30 is a two-color molded product including a first cover member 32 made of resin and a second cover member 34 made of resin. The cover body 30 can be manufactured, for example, by injection molding (two-color molding) a resin material that is a raw material of the first cover member 32 and the second cover member 34. Here, an example of a specific configuration of the cover body 30 will be described with reference to FIGS. 3 and 4.

In the cover body 30 shown in FIGS. 3 and 4, the first cover member 32 includes a semi-dome-shaped transparent portion 36 and a flat-plate-shaped skirt portion 38 connected to the end of the dome of the transparent portion 36. Have. The first cover member 32 includes a base material containing a colorant that transmits infrared rays and blocks visible light, so that the first cover member itself transmits infrared rays and blocks visible light. Is configured. Examples of the base material include polyester, polyolefin, polycarbonate, acrylic resin, PET, PVC and the like. Examples of the colorant include dyes and pigments. The content ratio of the colorant in the entire first cover member 32 is preferably 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably 0.05% by mass or less.

The term “dye” as used herein means an organic compound having a relatively small molecular weight, and a dye that can be used in a state of being dissolved or dispersed in water. Examples of dyes that can be used for the first cover member 32 include anthraquinone dyes, azo dyes, pyrazolone dyes, quinophthalone dyes, methine dyes, coumarin dyes, and combinations thereof.

Here, the pigment means a dye that is insoluble in water or a solvent and can be used by dispersing it as solid particles. Usable pigments are roughly classified into organic pigments and inorganic pigments, and the former include pyrrole pigments, quinacridone pigments, azo pigments, perylene pigments, dioxane pigments, isoindolinone pigments, and indus pigments. Examples include lens-based pigments, quinophthalone-based pigments, perinone-based pigments and phthalocyanine-based pigments. The latter inorganic pigments include iron oxide, cadmium red, titanium yellow, cadmium yellow, ultramarine blue, dark blue, cobalt blue, cobalt green and cerulean blue.

Among these, it is preferable to use a dye or an organic pigment, and it is more preferable to use a dye. The cover body 30 (first cover member 32) is molded with a relatively large thickness from the viewpoint of strength. However, depending on the type of colorant, the cover body 30 (first cover member 32) exists as large particles in the resin material and emits infrared light. There is a possibility that the infrared light cannot be sufficiently transmitted to the outside of the cover body 30 by being scattered.

FIG. 8 is a diagram showing light transmission spectra of a base material (acrylic), a base material containing a pigment type colorant, and a base material containing a dye type colorant. As shown in FIG. 8, by including pigment-type and dye-type colorants in the base material, the transmittance in the wavelength region of about 350 nm to about 750 nm can be made almost 0%. On the other hand, in the wavelength region of about 750 nm to about 1700 nm, the transmittance of the base material containing the pigment-type colorant has decreased. It is considered that this is because it is difficult to uniformly disperse the pigment, particularly the inorganic pigment, in the base material. When a dye or an organic pigment, particularly a dye, is adopted in the cover body 30, it is possible to prevent the transmittance of infrared light in the first cover member 32 from decreasing. Further, among the dyes, if an azo dye, particularly a benzotriazole dye, is used, the first cover member 32 that preferably transmits infrared light and blocks visible light can be molded.

Returning to FIG. 3 and FIG. 4 again, the second cover member 34 of the cover body 30 will be described. The second cover member 34 is a member that is integrally formed with the first cover member 32 and has a light transmittance different from that of the first cover member 32. The second cover member 34 is adhered to the hem portion 38 of the first cover member 32 by two-color molding. The second cover member 34 has the same plate-like shape as the skirt portion 38 of the first cover member 32. When the cover body 30 is viewed from the bottom, the central portion of the second cover member 34 is hollow so as not to overlap the transparent portion 36 of the first cover member 32. That is, the second cover member 34 is integrally formed with the first cover member 32 so that the infrared light emitted from the lamp 40 can pass through the first cover member 32.

The second cover member 34 is made opaque by using a base material that blocks visible light or by adding a colorant that blocks visible light to the base material. Examples of the base material include polyester, polyolefin, polycarbonate, acrylic resin, PET, PVC, ABS and AAS. Examples of the colorant include, in addition to the dyes and pigments listed for the first cover member 32, carbon black and the like that block both visible light and infrared light. Since it is not necessary for the second cover member 34 to have a function of transmitting infrared light, it is preferable in terms of cost to use carbon black when it contains a colorant.

Further, in the first cover member 32 capable of transmitting infrared light, a highly transparent acrylic resin or the like can be used as a base material, but if scratches or cracks occur, the transmission of infrared light may be hindered. There is. For example, when the cover body 30 is attached to a member such as the housing 22, if a fastening member such as a screw is directly passed through the first cover member 32, it may be damaged. In the cover body 30 described above, by integrating the second cover member 34 having higher strength than the first cover member 32, the fastening member can be passed through the second cover member 34. The load on the cover member 32 can be reduced, or no load is applied. Further, ribs or the like for mounting can be formed on the second cover member 34, and the degree of freedom in structural design for mounting can be improved. Examples of the member having high strength include a member made of ABS, AAS, polycarbonate or the like.

In the side mirror 20R, the infrared light emitted from the lamp 40 passes through the cover body 30 and is applied to the road surface. The infrared light reflected by the road surface passes through the sensor cover 24 and is detected by the sensor 50, whereby information such as the road surface shape is acquired. The lamp 40 located inside the cover body 30 is not visible from the outside.

The cover body 30 according to the first embodiment described above transmits the infrared light and blocks the visible light, and the second cover formed integrally with the first cover member 32. And a cover member 34 of 1. The first cover member 32 makes it possible to prevent the lamp 40 that emits infrared light from being visually recognized from the outside, and to impart other functions to the second cover member 34. Furthermore, since the first cover member 32 and the second cover member 34 are integrated by multicolor molding, a unified design can be formed.

The cover body 30 may be applied to the sensor cover 24 that covers the sensor. Also in this case, the first cover member 32 can prevent the sensor 50 that detects infrared light from being visually recognized from the outside, and can impart other functions to the second cover member 34. Becomes Furthermore, since the first cover member 32 and the second cover member 34 are integrated by multicolor molding, a unified design can be formed.

The second cover member 34 of the cover body 30 described above is made of an opaque member. Thereby, in addition to the function of the first cover member 32, the opaque second cover member 34 can also hide the internal components of the mounted member. Further, since the selection range of the material for realizing the impermeability of the second cover member 34 is wide, it is easy to select the color of the second cover member 34, and it is unified by matching the color with the vehicle body and parts. It is easy to express the appearance and design.

Note that, although the specific modes of the first cover member 32 and the second cover member 34 have been described with reference to FIG. 3, the cover body 30 may have other modes. FIG. 5 is a perspective view showing another example of the cover body 30. In the cover body 130 shown in FIG. 5, the first cover member 132 includes a semi-dome-shaped transparent portion 136. The second cover member 134 is a plate-shaped member that is bonded to the end of the dome of the transparent portion 136 of the first cover member 132. When the cover body 130 is viewed from the bottom, the central portion of the second cover member 134 is hollow so as not to overlap the transparent portion 136 of the first cover member 132 (FIG. 4).

(Second embodiment)
Subsequently, a second embodiment will be described with reference to FIG. FIG. 6 is a schematic sectional view showing the inside of the right front lamp device 10RF.

As shown in FIG. 6, the right front lamp device 10RF according to the second embodiment includes a housing 222 and a cover body 230. The housing 222 and the cover 230 define a lamp chamber 226 (an example of a housing space) of the right front lamp device 10RF. The front right lamp device 10RF includes a lamp unit 240 (

lamps

240A, 240B, 240C) (an example of a light emitting unit) and a sensor 250 in a lamp chamber 226. The lamp unit 240 and the sensor 250 are arranged in the order of the lamp 240A, the lamp 240B, the sensor 250, and the lamp 240C toward the right.

The lamp unit 240 includes a light source and an optical system. The lamp 240C includes the same light source and optical system as the lamp 40 of the first embodiment. The light sources included in the

lamps

240A and 240B are not limited to those that emit infrared light, and include lamp light sources and semiconductor light emitting elements. Examples of the lamp light source and the semiconductor light emitting element are the same as those described in the first embodiment, except that the lamp light source and the semiconductor light emitting element emit infrared light. The light emitted from the light source passes through the optical system and is emitted from the lamp unit 240. The lamp unit 240 is configured to emit light in the vehicle exterior direction.

The sensor 250 is configured to be able to detect infrared light. An example of the sensor 250 is the same as the sensor 50 of the first embodiment.

The cover body 230 is arranged so as to cover the lamp unit 240 and the sensor 250, and is connected to the housing 222 by a connecting member (not shown).

The cover body 230 is a two-color molded product having a first cover member 232 made of resin and a second cover member 234 made of resin. An example of the method of manufacturing the cover body 230 is the same as that described in the first embodiment.

The first cover member 232 is arranged so as to cover the sensor 250 and the lamp 240C. The first cover member 232 is similar to the first cover member 32 of the first embodiment with respect to the base material, the contained colorant, and the light transmission property, and thus the description thereof will be omitted.

The second cover member 234 is a member that is integrally formed with the first cover member 232 and has a light transmittance different from that of the first cover member 232. The second cover member 234 is arranged so as to cover the

lamps

240A and 240B.

The second cover member 234 is a transparent member. In addition, in this specification, "transparent" is a term including colorless transparency and colored transparency. The term "transparent" is not a term that refers only to a material that completely transmits visible light, but also a term that includes a material that is semi-transparent to the extent that the opposite side of the transparent member can be visually recognized. The second cover member 234 is composed of a transparent base material. Examples of the base material include polyester, polyolefin, polycarbonate, acrylic resin, PET, PVC and the like.

In the front right lamp device 10RF, the infrared light emitted from the lamp 240C passes through the first cover member 232 of the cover body 230 and is applied to the road surface, an object, and the like in front. Infrared light reflected by a road surface, an object, or the like passes through the first cover member 232 and is detected by the sensor 250, so that information on the front of the vehicle, information on the road surface shape, and the like are acquired. The lamp 240C and the sensor 250 located inside the first cover member 232 of the cover body 230 are not visible from the outside. Further, the lamp 240A and the lamp 240B function as normal headlamps and are visually recognized from the outside.

The cover body 230 according to the second embodiment described above also transmits the infrared light and blocks the visible light, and the second cover integrally formed with the first cover member 232. And a cover member 234 of the above. The first cover member 232 makes it possible to prevent the lamp 240C that emits infrared light and the sensor 250 that detects infrared light from being visually recognized from the outside, and give the second cover member 234 another function. It becomes possible to do. Furthermore, since the first cover member 232 and the second cover member 234 are integrated by multicolor molding, a unified design can be formed.

Also, the second cover member 234 of the cover body 230 described above is made of a transparent member. According to the cover body 230 in which the first cover member 232 and the transparent second cover member 234 are integrated, the first cover member 232 detects the lamp 240C emitting infrared light and the infrared light. The second cover member 234 can protect a normal lamp (a head lamp, a rear lamp, or the like) while keeping the sensor 250 invisible from the outside.

In addition, in the second embodiment, the cover body 230 constitutes the outer cover of the right front lamp device 10RF, but the cover body 230 may be mounted on the lamp device for other purposes. For example, part or all of the cover body 230 may be used as an extension, an outer lens, or an inner lens of the lamp device. For example, as an extension in the lamp device, the second cover member 234 may be arranged as an inner lens of the lamp while the other inner parts are not visually recognized from the outside by the first cover member 232. A plurality of functions can be realized by the cover body 230.

(Third embodiment)
Subsequently, a third embodiment will be described with reference to FIG. 7. FIG. 7 is a schematic sectional view showing the inside of the right front lamp device 310RF of another example.

The right front lamp device 310RF of the third embodiment is the same as the right front lamp device 210RF of the second embodiment except that the cover body 330 is different. Is omitted.

The cover body 330 is arranged so as to cover the lamp unit 240 and the sensor 250, and is connected to the housing 222 by a connecting member (not shown).

The cover body 330 is a three-color molded product including a first cover member 332 made of resin, a second cover member 334 made of resin, and a third cover member 335 made of resin. An example of the method of manufacturing the cover body 330 is the same as that described in the first embodiment. The first cover member 332 and the second cover member 334 are the same as those in the second embodiment, so description thereof will be omitted.

The third cover member 335 is a member having a light transmittance different from that of the first cover member 332 and the second cover member 334, and is an opaque member. As the base material and the colorant of the third cover member 335, those described in the second cover member 34 of the first embodiment can be adopted.

In the right front lamp device 310RF, the infrared light emitted from the lamp 240C passes through the first cover member 332 of the cover body 230 and is applied to the road surface, an object, and the like in front. The infrared light reflected by the road surface, an object, or the like passes through the first cover member 332 and is detected by the sensor 250, so that information such as the road surface is acquired. The lamp 240C and the sensor 250 located inside the first cover member 332 of the cover body 330 are not visible from the outside. Further, the lamp 240A and the lamp 240B function as normal headlamps and are visually recognized from the outside. Further, the cover body 330 is partially connected to the housing 222 via the third cover member 335.

According to the cover body 330 according to the third embodiment described above, in addition to the first cover member 332 and the second cover member 334, the third cover member 335 provides another function such as strength. It is possible to realize a fastening function with a high member and a simple light shielding function, and it is possible to apply a cover body having various functions.

Note that a part of the second cover member 334 on the housing 222 side in the third embodiment can be replaced with the third cover member 335, and can be appropriately selected according to a desired use and arrangement.

The present invention is not limited to the above-described embodiments and examples, and can be modified and improved as appropriate. In addition, the material, shape, size, numerical value, form, number, location, etc. of each constituent element in the above-described embodiments are arbitrary and are not limited as long as the present invention can be achieved.

In the above embodiment, an example in which the

cover body

30, 130, 230, 330 is mounted on the right front lamp device 10RF or the side mirror 20R has been described, but the left front lamp device 10LF, the right rear lamp device 10RB, the left rear lamp device. 10LB or 20L of side mirrors may be mounted. In addition, the outer cover or the like of the portion where the sensor and the sensor lamp are arranged inside may be configured by the

cover bodies

30, 130, 230 and 330 in a part of the vehicle body of the vehicle 1.

The present application is based on the Japanese patent application filed on November 15, 2018 (Japanese Patent Application No. 2018-214577), which is incorporated by reference in its entirety. Also, all references cited herein are incorporated in their entirety.

1: vehicle, 10LB: left rear lamp device, 10LF: left front lamp device, 10RB: right rear lamp device, 10RF: right front lamp device, 20L, 20R: side mirror, 30, 130, 230, 330: cover body, 32, 132, 232, 332: first cover member, 34, 134, 234, 334: second cover member, 335: third cover member

Claims

A first cover member that transmits infrared light and blocks visible light,
A vehicle-made cover body made of resin, which is a multicolor molded product having at least a second cover member that is integrally formed with the first cover member and has a different light transmittance from the first cover member. hand,
The first cover member is transparent to infrared light and contains a colorant that blocks visible light.
Cover body.
The cover body according to claim 1, wherein the coloring agent is a dye.
The cover body according to claim 2, wherein the dye is an anthraquinone dye, an azo dye, a pyrazolone dye, a quinophthalone dye, a methine dye, a coumarin dye, or a combination thereof.
The cover body according to any one of claims 1 to 3, wherein the second cover member is a member having higher strength than the first cover member.
The cover body according to any one of claims 1 to 4, wherein the second cover member is an opaque member.
The cover body according to any one of claims 1 to 4, wherein the second cover member is a transparent member.
Further comprising a third cover member integrally formed with the first cover member and the second cover member, the first cover member and the second cover member different in light transmittance from the second cover member,
The cover body according to any one of claims 1 to 6, wherein the third cover member is a transparent member or an opaque member.
The second cover member is configured such that, in a state where the cover body is mounted on a vehicle, infrared light emitted from a light emitting unit mounted on the vehicle can pass through the first cover member. , Is integrally formed with the first cover member,
The cover body according to any one of claims 1 to 7.