JP6883503B2 - Radar cover and radar cover unit - Google Patents

Description

The present invention relates to a radar cover and a radar cover unit.

For example, as shown in Patent Document 1, in order to improve the visibility of an emblem mounted on a vehicle at night, an emblem provided with a plurality of light sources on the back side may be used. In such an emblem, a substrate on which a plurality of light sources are mounted is arranged on the back surface of the emblem main body, and the light source is made to emit light by supplying power through the wiring formed on the substrate.

Japanese Unexamined Patent Publication No. 2012-126339

By the way, in recent years, due to heightened safety awareness, radar units that detect obstacles and the like around the vehicle by using radio waves such as millimeter waves are mounted on the vehicle. Such a radar unit is arranged inside the engine room so as to be covered with a radar cover having an emblem provided on the front surface of the vehicle, and transmits / receives radio waves via the radar cover. Therefore, in a vehicle equipped with the radar unit as described above, the radar cover needs to be formed so as to be able to transmit radio waves.

Here, when the light source is installed on the radar cover on which the emblem or the like is formed, the metal part inside the light source and the metal wiring for supplying power to the light source obstruct the transmission of radio waves. For this reason, it was not possible to provide a light emitting unit in the radar cover that allows radio waves to pass through.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to enable a radar cover capable of transmitting radio waves to emit at least a part of the radar cover without obstructing the transmission of radio waves.

The present invention employs the following configuration as a means for solving the above problems.

The first invention is a radar cover having a transparent member and a back surface member arranged on the back surface of the transparent member, and at least a part of the transparent member and the back surface member can be visually recognized through the transparent member. In addition to being arranged between the two, a configuration is adopted in which a fluorescent layer containing a fluorescent material is provided.

According to the second invention, in the first invention, as the back surface member, an inner core housed in a recess formed in a part of the back surface of the transparent member, the back surface of the transparent member, and the back surface side of the inner core. A configuration is adopted in which the base member for supporting the inner core is provided, and the fluorescent layer is arranged between the transparent member and the inner core.

The third invention supports the inner core housed in a recess formed in a part of the back surface of the transparent member and the inner core from the back surface side of the transparent member as the back surface member in the first invention. A configuration is adopted in which the base member is provided and the fluorescent layer is arranged between the transparent member and the base member.

In the fourth invention, in any one of the first to third inventions, the configuration in which the fluorescent material contained in the fluorescent layer is a material that emits fluorescence while being irradiated with excitation light is adopted.

In the fifth aspect of the invention, in any one of the first to third inventions, the fluorescent material contained in the fluorescent layer is a material that emits phosphorescence that continues to emit light even after being irradiated with excitation light. To do.

In the sixth invention, in any one of the first to fifth inventions, the configuration in which the fluorescent layer has fluorescent particles made of the fluorescent material and a holding layer in which the fluorescent particles are dispersed is adopted.

In the seventh invention, in any one of the first to sixth inventions, at least one of the transparent member and the back surface member has a fluorescent layer arrangement recess in which the fluorescent layer is arranged.

The eighth invention adopts a configuration in which the radar cover unit includes the radar cover according to any one of the first to seventh inventions and a light source unit that irradiates excitation light toward the fluorescent layer. ..

According to the present invention, since a fluorescent layer containing a fluorescent material is provided between the transparent member and the back surface member, the fluorescent material emits light when irradiated with excitation light, and one of the radar covers does not have a light source. The part can be made to emit light. Therefore, it is not necessary to install a light source or wiring for supplying power to the light source on the radar cover, and it is possible to prevent radio waves from being blocked by the light source or wiring. Therefore, according to the present invention, in a radar cover capable of transmitting radio waves, it is possible to emit at least a part of the radar cover without obstructing the transmission of radio waves.

It is a front view of the radiator grill provided with the radar cover in 1st Embodiment of this invention. It is an enlarged front view of the radar cover in 1st Embodiment of this invention. (A) is a cross-sectional view of the radar cover according to the first embodiment of the present invention, and (b) is a cross-sectional view of an inner core included in the radar cover. It is a schematic cross-sectional view of the fluorescent layer provided with the radar cover in 1st Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the emblem in 1st Embodiment of this invention. It is sectional drawing of the radar cover in 2nd Embodiment of this invention. It is sectional drawing of the radar cover in 3rd Embodiment of this invention. It is sectional drawing of the radar cover in 4th Embodiment of this invention. It is sectional drawing of the radar cover unit in 5th Embodiment of this invention.

Hereinafter, an embodiment of the radar cover and the radar cover unit according to the present invention will be described with reference to the drawings. In the drawings below, the scale of each member is appropriately changed in order to make each member recognizable.

(First Embodiment)
FIG. 1 is a front view of the radiator grill 1 provided with the radar cover 10 of the first embodiment. Further, FIG. 2 is an enlarged front view of the radar cover 10 of the first embodiment. Further, FIG. 3 (a) is a cross-sectional view of the radar cover 10, and FIG. 3 (b) is a cross-sectional view of the inner core 12 included in the radar cover 10.

The radiator grill 1 is provided on the front surface of the vehicle so as to close the opening leading to the engine room of the vehicle, ensuring ventilation to the engine room and preventing foreign matter from entering the engine room. A radar cover 10 is provided in the center of the radiator grill 1 so as to face the radar unit R arranged in the engine room. The radar unit R (see FIG. 3A) has, for example, a transmitting unit that transmits millimeter waves, a receiving unit that receives reflected waves, an arithmetic unit that performs arithmetic processing, and the like. The radar unit R transmits and receives radio waves transmitted through the radar cover 10, and detects the surrounding conditions of the vehicle based on the received radio waves. For example, the radar unit R calculates and outputs the distance to the obstacle, the relative speed of the obstacle, and the like.

The radar cover 10 is arranged so as to cover the radar unit R when viewed from the front side of the vehicle. As shown in FIG. 2, the radar cover 10 has a bright region 10A representing a figure or a character indicating a vehicle manufacturer's radar cover when viewed from the front side of the vehicle, and a black color for improving the visibility of the bright region 10A. It is a component having a region 10B and a light emitting region 10C surrounding a bright region 10A. As shown in FIG. 3, such a radar cover 10 includes a transparent member 11, an inner core 12 (back member), a base member 13 (back member), and a fluorescent layer 14.

The transparent member 11 is a portion formed of a substantially rectangular transparent material arranged on the outermost side of the vehicle. The front surface of the transparent member 11 is a smooth surface in order to enhance the visibility of the inner core 12 from the outside of the vehicle. Further, a recess 11a in which the inner core 12 is arranged is formed on the back surface of the transparent member 11. Further, the region where the recess 11a on the back surface of the transparent member 11 is not provided is a fixed surface with the base member 13 except for the contact region with the fluorescent layer 14.

The recess 11a is a portion for accommodating the inner core 12, and makes the accommodated inner core 12 three-dimensionally visible from the front side of the vehicle. The recess 11a is provided along the shape of a figure such as an emblem of a vehicle manufacturer or a character. By accommodating the inner core 12 in such a recess 11a, the above-mentioned bright region 10A is formed.

Such a transparent member 11 is formed of, for example, a transparent synthetic resin such as colorless PC (polycarbonate) or PMMA (polymethyl methacrylate resin), and has a thickness of about 1.5 mm to 10 mm. Further, the front surface of the transparent member 11 is subjected to a hard coat treatment for preventing scratches or a clear coat treatment of urethane-based paint, if necessary. If it is a transparent synthetic resin having scratch resistance, these scratch prevention treatments are unnecessary.

As shown in FIG. 3B, the inner core 12 includes a base portion 12a, a base coat layer 12b, a brilliant film 12c (metal thin film), and a top coat layer 12d. In order to improve visibility in the drawings, the inner core 12 is not shown by being divided into a plurality of layers except for FIG. 3 (b). The base portion 12a is formed by injection molding or the like, and is formed of, for example, a synthetic resin such as ABS, PC or PET. The base portion 12a has a convex shape in which the recess 11a of the transparent member 11 is embedded, and is fitted into the recess 11a of the transparent member 11. The base coat layer 12b is formed between the base portion 12a and the brilliant film 12c, and is for improving the adhesion between the base portion 12a and the brilliant film 12c. The base coat layer 12b is formed by, for example, clear coating using a transparent (including colored transparent) synthetic resin.

The brilliant film 12c is a layer having metal brilliance, which is formed on the front surface (the surface on the transparent member 11 side) of the base portion 12a and is arranged so as to cover the base portion 12a. The brilliant film 12c is a metal thin film made of indium (In). The brilliant film 12c has a structure having a plurality of islands arranged with gaps between them, and is a discontinuous film having a large number of fine gaps. Such a brilliant film 12c is capable of transmitting radio waves through these gaps.

The top coat layer 12d is formed on the brilliant film 12c so as to cover the brilliant film 12c, and is for protecting the brilliant film 12c. Like the base coat layer 12b, the top coat layer 12d is also formed by clear coating using a transparent (including colored transparent) synthetic resin.

The base coat layer 12b and the top coat layer 12d can also be a transparent ceramic coat layer made of silicon oxide (SiOx). In this case, it has higher heat resistance and higher radio wave transmission than a base coat layer or a top coat layer made of a resin formed by clear coating or the like.

Further, in the present embodiment, the brilliant film 12c is formed on the surface of the base portion 12a on which the base coat layer 12b is formed. When a brilliant film 12c having high corrosion resistance is used, the base coat layer 12b can be omitted.

The base member 13 is a portion that is fixed to the back surface of the transparent member 11 and supports the inner core 12 from the back surface side of the transparent member 11, and is formed of a black resin material. The base member 13 has an engaging portion 13a protruding toward the engine room side. The tip of the engaging portion 13a is formed in a claw shape, and the tip is locked to, for example, the radiator grill body. The base member 13 thus fixed to the back surface of the transparent member 11 is visible from the outside of the transparent member 11 and forms the black region 10B described above. The base member 13 makes a region other than the bright region 10A visible in black, and relatively improves the visibility of the bright region 10A.

Further, as shown in FIG. 3A, a fluorescent layer arrangement recess 13b for accommodating the fluorescent layer 14 is formed on the surface of the base member 13 on the transparent member 11 side. The fluorescent layer arrangement recess 13b has the same depth dimension as the thickness of the fluorescent layer 14. The fluorescent layer-arranged recess 13b has a size such that a part thereof protrudes around the recess 11a (that is, the inner core 12) when the radar cover 10 is viewed from the front side.

Such a base member 13 includes ABS (acrylonitrile / butadiene / styrene copolymer synthetic resin), AES (acrylonitrile / ethylene / styrene copolymer synthetic resin), ASA (acrylonitrile / styrene / acrylate), PBT (polybutylene terephthalate), and the like. It is made of colored PC, synthetic resin such as PET (polyethylene terephthalate), or a composite resin thereof, and has a thickness of about 0.5 mm to 10 mm.

The fluorescent layer 14 is a layer made of, for example, a sheet material containing fluorescent particles made of a fluorescent material that emits fluorescence by irradiating with excitation light such as ultraviolet rays, and is visible through a transparent member 11. The fluorescent layer 14 does not necessarily have to be formed of a sheet material. For example, it is also possible to form the fluorescent layer 14 by drying a paint (fluorescent paint) containing a fluorescent material.

FIG. 4 is a schematic cross-sectional view of the fluorescent layer 14. As shown in this figure, the fluorescent layer 14 includes, for example, granular fluorescent particles 14a and a resin layer 14b (holding layer) that holds these fluorescent particles 14a so that the fluorescent particles 14a have a gap between them. It is held in the resin layer 14b in a state of being dispersed in the resin layer 14b. When the fluorescent particles 14a have radio wave transmittance, it is possible to increase the density of the fluorescent particles 14a in the fluorescent layer 14 so that the fluorescent particles 14a are densely arranged without gaps. On the other hand, when the fluorescent particles 14a do not have radio wave transmittance, the density of the fluorescent particles 14a in the fluorescent layer 14 is lowered so that a gap through which radio waves can be transmitted is formed.

The "fluorescence" referred to here has a short emission lifetime that emits light only while irradiating the excitation light, and a long emission lifetime that continues to emit light even after the irradiation of the excitation light is stopped ( Phosphorescence) and included. That is, as the fluorescent material contained in the fluorescent layer 14, any of a material that emits fluorescence during irradiation with excitation light and a material that emits phosphorescence that continues to emit light even after irradiation with excitation light may be used. .. When a material that emits fluorescence while irradiating the excitation light is used as the fluorescent material, the light emitting state of the fluorescent layer 14 can be changed instantly by turning on and off the excitation light. On the other hand, when a phosphorescent material that emits phosphorescence that continues to emit light even after being irradiated with the excitation light is used as the fluorescent material, the emission continues even after the excitation light is turned off, so that the irradiation time of the excitation light can be shortened. it can.

The fluorescent layer 14 is arranged in a region including a region for forming the recess 11a in which the inner core 12 is accommodated when viewed from the front side (the surface side of the transparent member 11), and the transparent member 11 and the base member 13 are arranged. It is placed between and. Further, the fluorescent layer 14 has a size such that the edge portion bulges laterally around the entire circumference of the recess 11a when viewed from the same direction. That is, in the present embodiment, when viewed from the front side (the surface side of the transparent member 11), the fluorescent layer 14 is hidden by the inner core 12 in the arrangement region of the fluorescent layer 14 and the inner core 12 is arranged, and the inner core 12 is hidden. The fluorescent layer 14 is visible in the arranged region where the inner core 12 is not arranged (that is, the region where the edge portion of the fluorescent layer 14 is arranged). The visible region of the fluorescent layer 14 forms a light emitting region 10C surrounding the bright region 10A.

Further, the fluorescent layer 14 is arranged in the fluorescent layer arrangement recess 13b of the base member 13, and the surface is flush with the surface of the base member 13 on the transparent member 11 side. The fluorescent layer 14 is formed in the base member 13 in a state of being adhered to the back surface of the inner core 12 housed in the recess 11a of the transparent member 11 and the back surface of the transparent member 11 by an adhesive. It is arranged at 13b. In the manufacturing process of the radar cover 10 of the present embodiment, the fluorescent layer 14 is necessarily adhered to the transparent member 11 or the inner core 12 with an adhesive when it can be accurately positioned with respect to the transparent member 11 or the like. No need.

Subsequently, a method of manufacturing the radar cover 10 of the present embodiment will be described with reference to FIG. FIG. 5 is a schematic view for explaining a method of manufacturing the radar cover 10 of the present embodiment. First, in the method of manufacturing the radar cover 10 of the present embodiment, the transparent member 11 is formed as shown in FIG. 5 (a). For example, the transparent member 11 is formed by injection molding. Since the transparent member 11 having the recess 11a can be formed by this injection molding, it is not necessary to form the recess 11a in the subsequent process. If necessary, the surface side (the surface facing the outside of the vehicle) or the entire surface of the transparent member 11 may be subjected to a hard coat treatment for improving scratch resistance and the like.

Next, as shown in FIG. 5 (b), the inner core 12 is formed. For example, the base 12a (see FIG. 3B) is formed by injection molding. Further, the base portion 12a is subjected to clear coating and then dried to form the base coat layer 12b (see FIG. 3B). Further, a brilliant film 12c (see FIG. 3B) is formed on the base coat layer 12b by sputtering or vacuum deposition. Further, the surface of the brilliant film 12c is subjected to clear coating and then dried to form the top coat layer 12d (see FIG. 3B). It is not necessary to wait for the formation of the transparent member 11 shown in FIG. 5A before the inner core 12 is formed. By forming the inner core 12 in parallel with the process of forming the transparent member 11 shown in FIG. 5A, the manufacturing time of the radar cover 10 can be shortened.

Next, as shown in FIG. 5C, the inner core 12 is fitted into the recess 11a of the transparent member 11. Next, as shown in FIG. 5D, the inner core 12 is fixed to the back surface of the transparent member 11 housed in the recess 11a by adhering the fluorescent layer 14 with an adhesive or the like. Next, as shown in FIG. 5 (e), the base member 13 is formed. Here, the transparent member 11 in which the inner core 12 is installed in the recess 11a is placed inside the mold for injection molding, and insert molding is performed to inject the molten resin into the back side of the transparent member 11 to perform insert molding. The member 13 is formed. Such a base member 13 is welded to the transparent member 11 by heat during insert molding and is arranged so as to cover the fluorescent layer 14. As a result, the inner core 12 and the fluorescent layer 14 are fixed to the transparent member 11.

According to the radar cover 10 of the present embodiment as described above, since the fluorescent layer 14 containing the fluorescent particles 14a is provided between the transparent member 11 and the base member 13, the fluorescent particles 14a are irradiated with the excitation light. Lights up, and a part of the radar cover 10 (light emitting region 10C) can be made to emit light even if it does not have a light source. Therefore, according to the radar cover 10 of the present embodiment, it is not necessary to install a light source or wiring for supplying power to the light source, and it is possible to prevent radio waves from being blocked by the light source or wiring. Therefore, according to the radar cover 10 of the present embodiment, it is possible to emit light at least a part of the radar cover 10 without obstructing the transmission of radio waves.

Further, in the radar cover 10 of the present embodiment, the fluorescent layer 14 is provided between the transparent member 11 and the base member 13 which is a back member arranged on the back surface of the transparent member 11. Therefore, since the fluorescent layer 14 is arranged on the back surface of the inner core 12, it is not necessary to pattern the shape of the fluorescent layer 14 as seen from the front side according to the shape of the inner core 12. Therefore, the fluorescent layer 14 can be easily molded, and the manufacturing process of the radar cover 10 of the present embodiment can be simplified. However, the fluorescent layer 14 does not necessarily have to be arranged on the back surface side of the inner core 12. For example, it is also possible to pattern the fluorescent layer 14 according to the light emitting region 10C and arrange only the visible region of the inner core 12 of the present embodiment between the transparent member 11 and the base member 13.

Further, in the radar cover 10 of the present embodiment, the base member 13 which is a back surface member has a fluorescent layer arrangement recess 13b in which the fluorescent layer 14 is arranged. Therefore, it is possible to reliably prevent the fluorescent layer 14 from being displaced with respect to the transparent member 11 or the like due to vehicle vibration or the like.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In the description of the present embodiment, the description of the same parts as those of the first embodiment will be omitted or simplified.

FIG. 6 is a cross-sectional view of the radar cover 20 of the present embodiment. As shown in this figure, the radar cover 20 of the present embodiment is provided with a fluorescent layer arrangement recess 11b for accommodating the fluorescent layer 14 on the back surface of the transparent member 11, and the fluorescent layer 14 is provided with the fluorescent layer arrangement recess 11b. Is located in. The depth dimension of the fluorescent layer arrangement recess 11b may be different from the thickness dimension of the fluorescent layer 14, but is set to be the same as the thickness dimension of the fluorescent layer 14, for example. In such a radar cover 20 of the present embodiment, a recess 11a for accommodating the inner core 12 is formed at the bottom of the fluorescent layer arrangement recess 11b.

According to the radar cover 20 of the present embodiment having such a configuration, when the base member 13 is formed by injection molding, it is possible to prevent the position of the fluorescent layer 14 with respect to the transparent member 11 from being changed by the flowing resin. It is possible to arrange the fluorescent layer 14 at an accurate position.

(Third Embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. In the description of the present embodiment, the description of the same parts as those of the first embodiment will be omitted or simplified.

FIG. 7 is a cross-sectional view of the radar cover 30 of the present embodiment. As shown in this figure, in the radar cover 30 of the present embodiment, a fluorescent layer accommodating recess 12e for accommodating the fluorescent layer 14 is formed on a part of the inner core 12 on the transparent member 11 side, and the fluorescent layer 14 is a fluorescent layer. It is housed in the storage recess 12e. That is, in the radar cover 30 of the present embodiment, the fluorescent layer 14 is arranged between the transparent member 11 and the inner core 12 which is a back surface member.

According to the radar cover 30 of the present embodiment having such a configuration, the fluorescent layer 14 is arranged so as to overlap the inner core 12 when viewed from the front side. Therefore, according to the radar cover 30 of the present embodiment, it is possible to provide the light emitting region 10C in a part of the bright region 10A.

(Fourth Embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. In the description of the present embodiment, the description of the same parts as those of the first embodiment will be omitted or simplified.

FIG. 8 is a cross-sectional view of the radar cover 40 of the present embodiment. As shown in this figure, the radar cover 40 of the present embodiment includes an inner core 15 that does not have a base coat layer 12b, a glitter film 12c, and a top coat layer 12d, a fluorescent layer 14 formed on the surface of the inner core 15, and a fluorescent layer 14. A masking layer 16 partially provided on the surface of the fluorescent layer 14 is provided. The masking layer 16 is formed by drying a paint having a metallic luster having radio wave transmission, and forms a bright region 10A.

According to the radar cover 40 of the present embodiment, the structure has a bright region 10A and a light emitting region 10C by the fluorescent layer 14 and the masking layer 16 even if the metal bright film 12c made of indium or the like is not provided. be able to. The masking layer 16 does not necessarily have to be formed so as to be overlapped with the fluorescent layer 14, and may be formed so as to cover a part of the base member 13. Further, the fluorescent layer 14 may be provided between the base member 13 and the transparent member 11.

(Fifth Embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG. In the description of the present embodiment, the description of the same parts as those of the first embodiment will be omitted or simplified.

FIG. 9 is a cross-sectional view of the radar cover unit 50 of the present embodiment. As shown in this figure, the radar cover unit 50 of the present embodiment includes the above-mentioned radar cover 10 and a light source unit 60.

The light source unit 60 is fixed to the base member 13 of the radar cover 10 and is arranged on the side of the transparent member 11. The light source unit 60 emits ultraviolet rays, which are excitation light, by being supplied with power from an external power source or the like, and irradiates the ultraviolet rays toward the fluorescent layer 14 of the radar cover 10. It is possible to install only one such light source unit 60, but for example, a plurality of such light source units 60 may be provided so as to surround the transparent member 11.

According to the radar cover unit 50 of the present embodiment having such a configuration, even if the vehicle does not have a light source unit, the fluorescent layer 14 of the radar cover 10 is irradiated with excitation light to cause the fluorescent layer 14 to emit light. Is possible.

In the present embodiment, the configuration in which the light source unit 60 is installed on the radar cover 10 of the first embodiment has been described, but the present invention includes the light source unit 60 on the radar cover of another embodiment. It is also possible to adopt a configuration.

Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above embodiment. The various shapes and combinations of the constituent members shown in the above-described embodiment are examples, and can be variously changed based on design requirements and the like without departing from the spirit of the present invention.

For example, in the above embodiment, the configuration in which the fluorescent layer 14 is a sheet-like member has been described. However, the present invention is not limited to this. For example, it is also possible to adopt a configuration including a fluorescent layer formed by applying and drying a fluorescent paint containing a fluorescent material.

Further, in the above embodiment, the configuration in which the radar cover includes the transparent member, the inner core, and the base member has been described. However, the present invention is not limited to this. For example, it is also possible to adopt a configuration including a back surface member in which the inner core and the base member are integrated.

1 ... Radiator grill, 10 ... Radar cover, 10A ... Bright area, 10B ... Black area, 10C ... Light emitting area, 11 ... Transparent member, 11a ... Recess, 11b ... Fluorescent layer placement recess, 12 ... Inner core, 13 ... Base member (back member), 13a ... Engagement part, 13b ... Fluorescent layer placement recess, 14 ... Fluorescent layer, 14a ... Fluorescent particles, 14b ... Resin layer (retaining layer) , 15 ... Inner core, 16 ... Masking layer, 20 ... Radar cover, 30 ... Radar cover, 40 ... Radar cover, 50 ... Radar cover unit, 60 ... Light source

Claims (6)

A radar cover having a transparent member and a back surface member arranged on the back surface of the transparent member.
At least a part of the transparent member is visibly arranged between the transparent member and the back surface member, and a fluorescent layer containing a fluorescent material is provided .
The back surface member includes an inner core housed in a recess formed in a part of the back surface of the transparent member, and a base member that supports the inner core from the back surface side of the transparent member.
A radar cover characterized in that the fluorescent layer is arranged between the transparent member and the base member. The fluorescent material, while irradiated with excitation light, radar cover according to claim 1, characterized in that a material which fluoresces contained in the phosphor layer. The radar cover according to claim 1 or 2 , wherein the fluorescent material contained in the fluorescent layer is a material that emits phosphorescence that continues to emit light even after being irradiated with excitation light. The radar cover according to any one of claims 1 to 3 , wherein the fluorescent layer has fluorescent particles made of the fluorescent material and a holding layer in which the fluorescent particles are dispersed. The radar cover according to any one of claims 1 to 4 , wherein at least one of the transparent member and the back surface member has a fluorescent layer arrangement recess in which the fluorescent layer is arranged. The radar cover according to any one of claims 1 to 5 and
A radar cover unit including a light source unit that irradiates excitation light toward the fluorescent layer.

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