JP2017215243A - Vehicle decorative part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle decorative part that features snow-melting capability and an improved millimeter wave transmissivity.SOLUTION: A main part of an emblem 20, a vehicle decorative part, is comprised of a main decorative body 21. The main decorative body 21 is attached to a vehicle at a position in front of a millimeter wave radar device in a transmission direction of a millimeter wave therefrom to decorate the vehicle, and has a millimeter wave transmissivity. The main decorative body 21 has mounting seats 22a for attaching the main decorative body 21 onto a vehicle formed at a plurality of points on a rear surface thereof. The millimeter wave is transmitted through a transmission area Z1 of the main decorative body 21, which is arranged inside an area encircled by the mounting seats 22a. A portion of the main decorative body 21 outside the area encircled by the mounting seats 22a (a portion outside the transmission area Z1) is provided with a heater 35.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle decorative component that decorates a vehicle and has millimeter wave permeability from a millimeter wave radar device.

  In a vehicle, in order to measure a distance between vehicles and a distance from an obstacle using millimeter waves, a millimeter wave radar device may be installed on the rear side of a vehicle decorative part such as a front grill or an emblem. Conventionally, this millimeter-wave radar device has taken measures to temporarily stop measurement when snow is attached to a vehicle decorative part. However, with the widespread use of millimeter wave radar devices, it is desired to perform measurement even during snowfall.

  Therefore, it is considered to add a snow melting function to the vehicle decorative part. For example, in patent document 1, the main part of the decorative part for vehicles is comprised by the decoration main-body part, and the heater wire is formed in the front surface of this decoration main-body part. In this formation, a plurality of linear portions are set on the heater wire, and these linear portions are arranged in parallel at regular intervals. Furthermore, on the front surface of the decorative main body portion, a groove portion extending in parallel with the linear portions is formed between adjacent linear portions of the heater wires. In this vehicular decorative part, snow adhering to the front surface is melted by the heat of the heater wire to become water. This water flows down along the groove and is drained from the vehicle decorative part.

  Moreover, in patent document 2, the main part of the decorative component for vehicles is comprised by the decoration main-body part, and the metal layer is provided in this decoration main-body part. In this vehicle decorative part, the metal layer generates heat when energized, and the snow attached to the vehicle decorative part is melted.

JP 2004-138572 A JP 2002-22821 A

  However, although the heater wire in Patent Document 1 and the metal layer in Patent Document 2 exhibit the function of melting the attached snow, they interfere when millimeter waves pass through the vehicle decorative part, thereby reducing the transmission performance. There is a fear.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle decorative part that can improve the millimeter wave transmission performance while exhibiting a snow melting function. is there.

  A decorative part for a vehicle that solves the above-described problem includes a decorative main body that is attached in front of a millimeter wave transmission direction from a millimeter wave radar device in a vehicle to decorate the vehicle and has millimeter wave permeability. The heater is provided in a portion outside the millimeter wave transmission region in the decorative main body.

  According to said structure, the millimeter wave transmitted from the millimeter-wave radar apparatus permeate | transmits the decoration main-body part in the vehicle decorative component located in the transmission direction front. At this time, since the heater is provided in a portion outside the millimeter wave transmission region in the decorative main body, it is difficult to prevent millimeter wave transmission.

  Further, when the heater generates heat, the heat is also transmitted to the transmission region in the decoration main body. Therefore, even if snow adheres to the vehicle decorative part, the snow is melted by the heat transmitted from the heater.

  In the vehicle decorative part, mounting seats for attaching the decoration main body to the vehicle are formed at a plurality of locations on the rear surface of the decoration main body, and the transmission region is surrounded by the plurality of mounting seats. It is preferable that the heater is provided inside a region, and the heater is provided in a portion outside the region surrounded by the plurality of mounting seats.

According to said structure, the decoration main-body part of the decorative component for vehicles is attached to a vehicle in the attachment seat provided in the multiple places of the rear surface.
In such a vehicular decorative part, the millimeter wave transmitted from the millimeter wave radar device passes through a transmission area inside the area surrounded by the plurality of mounting seats in the decoration main body. At this time, since the heater is provided in a portion outside the region surrounded by the plurality of mounting seats, it is difficult to prevent the transmission of millimeter waves.

In the above vehicle decorative component, it is preferable that the heater has a linear shape and is arranged in an annular shape surrounding the transmission region.
According to said structure, when the linear heater arrange | positioned at the cyclic | annular surrounding the permeation | transmission area | region in a decoration main-body part heat | fever-generates, the heat | fever will be transmitted from the circumference | surroundings with respect to a permeation | transmission area | region. Therefore, even if snow adheres to the part corresponding to the transmission region in the decorative part for a vehicle, the snow is uniformly melted by the heat from the heater regardless of the attachment part.

  In the above vehicle decorative part, the decoration main body portion is provided with a heating sheet that is partially formed of a resin sheet, and the heater is formed on the resin sheet in the heating sheet. It is preferable.

According to said structure, a heating sheet is arrange | positioned in the predetermined | prescribed location of a decoration main-body part, and a heater is arrange | positioned in the outer part rather than the permeation | transmission area | region of a millimeter wave among decoration main-body parts.
In the vehicle decorative part, the decoration main body is formed of a resin material, a transparent member formed of a resin material and disposed on the front side of the substrate in the transmission direction, and the substrate. And a decorative layer formed between the transparent member and having millimeter wave permeability, and the heating sheet is one of or adjacent to the base material, the transparent member, and the decorative layer. It is preferable that they are arranged in a stacked state.

According to said structure, in the decorative component for vehicles, the decorating layer formed between the base material and the transparent member exhibits a decorative function.
The millimeter wave transmitted from the millimeter wave radar device or the millimeter wave reflected by the object passes through the base material, the decorative layer, and the transparent member in the decoration main body. Further, the millimeter wave is disposed in a state of being superimposed on one of the base material, the transparent member, and the decorative layer, or two adjacent to each other, and passes through the heating sheet integrated with the decoration main body. At this time, since the heater is provided in a portion outside the millimeter wave transmission region in the decorative main body, it is difficult to prevent millimeter wave transmission.

  According to the above vehicle decorative part, it is possible to improve the millimeter wave transmission performance while exhibiting a snow melting function.

The front view of the emblem in one Embodiment. Explanatory drawing which shows the cross-section of an emblem along the 2-2 line | wire of FIG. 1 with a millimeter wave radar apparatus. The front view which takes out and shows a heating sheet from the emblem in one Embodiment. The fragmentary sectional side view which expands and shows the A section in FIG. The partial side sectional view which expands and shows the B section in FIG. It is a figure corresponding to FIG. 5, and the partial sectional side view explaining the sealing structure of the outer peripheral part of the principal part in a heating sheet.

  Hereinafter, an embodiment in which a vehicle decorative part is embodied in an emblem will be described with reference to FIGS. In addition, in each figure, in order to make each member into a recognizable size, the scale of each member is appropriately changed and shown.

  A front grill for cooling the radiator by introducing outside air such as traveling wind into the engine room is attached to the front of the engine room of the vehicle. In FIG. 5, a part of the front grille 11 is shown by a two-dot chain line.

  Further, as shown in FIG. C. C. A millimeter wave radar device 15 that functions as a sensor in (adaptive cruise control) is attached. The millimeter wave radar device 15 transmits the millimeter wave and receives the millimeter wave reflected by the object and receives the millimeter wave from the difference between the transmitted wave and the received wave between the vehicle ahead and the own vehicle (vehicle 10). Measure distance and relative speed. The millimeter wave is a radio wave having a wavelength of 1 to 10 mm and a frequency of 30 to 300 GHz. A. C. C. Controls the throttle and brake of the engine based on the measurement result by the millimeter wave radar device 15 to accelerate and decelerate the own vehicle (vehicle 10), thereby controlling the inter-vehicle distance.

  The thickness of the front grill 11 is not constant like a general front grill. Further, in the front grill 11, a metal plating layer is formed on the surface of the resin base material as in a general front grill. Therefore, the front grille 11 interferes with the transmitted or reflected millimeter wave. For this reason, in the front grill 11, there are two locations in FIG. 5 that are the millimeter wave path of the millimeter wave radar device 15, specifically, the location in front of the millimeter wave transmission direction from the millimeter wave radar device 15. A window portion 12 is provided as indicated by a dotted line. The window portion 12 is a portion of the front grill 11 into which an emblem 20 described later is fitted. A pair of power supply connection terminals 13 is provided at the bottom of the inner wall surface of the window 12. These connection terminals 13 have a planar shape extending in the front-rear direction.

  As shown in FIGS. 1 and 2, the emblem 20 includes a decorative main body 21 and a heating sheet 33 that are the main parts of the emblem 20. The decorative main body 21 includes a base material 22, a transparent member 25, and a decorative layer 32, and has an elliptical plate shape as a whole. Moreover, the decoration main body 21 is gently curved so as to swell forward.

  The base material 22 is formed in color by a resin material such as an AES (acrylonitrile-ethylene-styrene copolymer) resin, which is a resin material having a small dielectric loss tangent (an index value representing the degree of electrical energy loss in the dielectric). . The dielectric tangent of AES resin is 0.007. If the dielectric loss tangent is small, it is difficult for the millimeter wave to be converted into thermal energy, so that the attenuation of the millimeter wave can be suppressed.

  FIG. 4 shows an enlarged view of part A in FIG. As shown in FIG. 4, the front portion of the base material 22 is formed with a general portion 23 that is substantially orthogonal to the front-rear direction and a convex portion 24 that protrudes forward from the general portion 23. The general portion 23 corresponds to the background region 20 a of the emblem 20 in FIG. 1, and the convex portion 24 corresponds to the character region 20 b of the emblem 20.

As shown in FIGS. 1 and 2, attachment seats 22 a for attaching the decorative main body 21 to the vehicle 10 (front grill 11) are formed at a plurality of locations on the rear surface of the base material 22.
The base material 22 is replaced with an AES resin, a resin having a dielectric constant close to that of the transparent member 25, such as an ASA (acrylonitrile-styrene-acrylate copolymer) resin, a PC (polycarbonate) resin, or a PC / ABS (acrylonitrile-). (Butadiene-styrene copolymer) resin or the like.

  As shown in FIGS. 2 and 4, the transparent member 25 is transparently formed of a resin material such as a PC resin which is a resin material having a small dielectric loss tangent. The dielectric loss tangent of the PC resin is 0.006, and the relative dielectric constant is substantially the same as that of the AES resin. The transparent member 25 is disposed on the front side of the base material 22. Further, the transparent member 25 is divided into a front transparent member 26 constituting the front portion and a rear transparent member 27 constituting the rear portion. A rear portion of the rear transparent member 27 is formed in a shape corresponding to the shape of the front portion of the base material 22. In other words, a general portion 28 that is substantially orthogonal to the front-rear direction is formed at the rear portion of the rear transparent member 27 and in front of the general portion 23 of the base material 22. A concave portion 29 is formed in the rear portion of the rear transparent member 27 and in front of the convex portion 24 of the base material 22 so as to be recessed forward from the general portion 28.

The transparent member 25 may be formed of a PMMA (polymethyl methacrylate) resin, which is a resin material having a small dielectric loss tangent, like the PC resin.
A hard coat layer 31 is formed on the front surface of the front transparent member 26 by applying a known surface treatment agent for resin. Examples of the surface treatment agent include acrylate-based, oxetane-based, silicone-based organic hard coat agents, inorganic hard coat agents, organic-inorganic hybrid hard coat agents, and the like. The hard coat layer 31 formed of such a hard coat agent has a scratch-preventing action, a dirt-preventing action, a light resistance and weather resistance improving action by UV cut, and a water repellent action on the front surface of the front transparent member 26. Useful effects such as improvement are brought about. Note that the hard coat layer 31 may be colored within a range where millimeter waves can be transmitted, if necessary.

  The decorative layer 32 is for decorating the front portion of the vehicle 10 including the front grille 11 and is formed between the base material 22 and the rear transparent member 27 and has millimeter wave permeability. Yes. The decoration layer 32 is configured by, for example, a combination of a colored layer such as black and a metal layer. The colored layer is formed on the general portion 28 of the rear transparent member 27 by a method such as printing. The metal layer is formed by vapor-depositing a metal material such as indium on the rear surface of the concave portion 29 of the rear transparent member 27 and the entire rear surface of the colored layer. In addition, in the decorating layer 32, in order to suppress corrosion of a metal layer, a metal layer may be coat | covered with the corrosion prevention layer which consists of an acrylic-type or urethane-type resin material.

  In the decoration main body 21 including the base material 22, the transparent member 25, and the decorative layer 32, as shown by a two-dot chain line in FIG. The transparent region Z1 is set.

  As shown in FIGS. 2 and 3, the heating sheet 33 is also called a planar heating element, a film heater, or the like, and includes a resin sheet 34 and a linear heater 35 formed on the resin sheet 34. I have. As the resin sheet 34, for example, a sheet formed of PC resin is used. Moreover, as the linear heater 35, what was formed by printing a nichrome wire, a transparent conductive film, a carbon heating element, a silver paste etc., for example is used. The heater 35 may be further covered with a resin material from the front side.

  The main portion 33 a of the heating sheet 33 is disposed between the front transparent member 26 and the rear transparent member 27 so as to be overlapped with the front transparent member 26 and the rear transparent member 27. The main part 33a is in close contact with the front transparent member 26 and the rear transparent member 27, and is integrated therewith. The main portion 33a is gently curved so as to swell forward, like the decorative main body portion 21 described above. In the main portion 33a, the heater 35 is provided in a portion outside the region surrounded by the plurality of mounting seats 22a. The portion provided with the heater 35 is a portion outside the transmission region Z1 of the decorative main body portion 21. In this embodiment, the heater 35 is wired in an elliptical shape along the outer peripheral edge of the resin sheet 34 as a location satisfying such conditions.

  FIG. 5 shows an enlarged view of part B in FIG. As shown in FIGS. 3 and 5, the heating sheet 33 includes a connecting portion 33 b extending from the lower end portion of the main portion 33 a to the outside of the decorative main body portion 21 in addition to the main portion 33 a. Here, the connecting portion 33b is bent rearward at the boundary portion with the main portion 33a and extends rearward from the lower end portion of the main portion 33a. In FIG. 3, the connection portion 33 b is shown in an unbent state. The power receiving connection terminals 36 at both ends of the heater 35 are formed in the connection portion 33b. These connection terminals 36 have a planar shape extending in the front-rear direction.

  As shown in FIG. 4, a heat transfer suppression layer 37 made of a material having a higher deflection temperature (thermal deformation temperature) than that of the base material 22 is formed between the decorative layer 32 and the base material 22. ing. In the present embodiment, the heat transfer suppression layer 37 is formed of an ultraviolet (UV) curable paint.

  Further, in at least the transmission region Z1 (see FIG. 1) of the decorative main body 21 and the heating sheet 33, the thickness T in the front-rear direction of the emblem 20 is uniformly set to a value substantially equal to a value satisfying the following Expression 1. Has been. Here, “substantially equal thickness” means a thickness included within an error range of ± 0.2 mm.

T = {(λe / 2) / √ (εp)} n (Expression 1)
However, the meaning of each symbol in the above formula is as follows.
λe: millimeter wave wavelength εp: relative dielectric constant of transparent member 25 (or base material 22) n: integer As described above, the thickness T of the emblem 20 is an integer obtained by dividing the half wavelength by the square root of the relative dielectric constant. It is set to double. In the present embodiment, the total thickness T1 in the front-rear direction of the front transparent member 26 and the hard coat layer 31 is set to 1.2 mm. The total thickness T2 (the distance between the front surface of the rear transparent member 27 and the rear surface of the base material 22) in the front-rear direction of the rear transparent member 27, the decorative layer 32, the heat transfer suppressing layer 37, and the base material 22 is set to 6.0 mm. Has been. With such a setting, the thickness T in the front-rear direction of the emblem 20 is about 7.2 mm.

Next, the operation and effect of the emblem 20 of the present embodiment configured as described above will be described.
In the emblem 20, the heater 35 is formed on the resin sheet 34 in the heating sheet 33. Therefore, when manufacturing the emblem 20, the heater 35 is disposed outside the transmission region Z <b> 1 in the decorative main body portion 21 by arranging the heating sheet 33 at a predetermined position between the front transparent member 26 and the rear transparent member 27. It can be arranged in the part.

  The emblem 20 is fitted into the window 12 of the front grill 11 from the front. At the time of fitting, as shown in FIG. 5, the power receiving connection terminal 36 below the heating sheet 33 in the emblem 20 contacts the power supply connection terminal 13 at the bottom of the inner wall surface of the window portion 12, Connected to. Further, the emblem 20 is attached to the vehicle 10 (front grill 11) at attachment seats 22a (see FIGS. 1 and 2) provided at a plurality of locations on the rear surface of the decorative main body 21.

  In the emblem 20, the decorative layer 32 formed between the base material 22 and the transparent member 25 exhibits a function of decorating the front portion of the vehicle. When the emblem 20 is viewed from the front, the light is reflected by the decorative layer 32 formed in an uneven shape. Therefore, through the front transparent member 26, the heating sheet 33, and the rear transparent member 27, characters having metallic luster can be seen three-dimensionally on the back side thereof.

  As shown in FIGS. 1 and 2, millimeter waves are transmitted forward from the millimeter wave radar device 15 in order to measure the inter-vehicle distance and relative speed between the preceding vehicle and the host vehicle (vehicle 10). The millimeter wave is a region surrounded by a plurality of mounting seats 22 a in each of the base material 22, the heat transfer suppressing layer 37, the decorative layer 32, the rear transparent member 27, the front transparent member 26, and the hard coat layer 31 in the emblem 20. Is transmitted through a transmission region Z1 on the inside. In the decorative layer 32, the millimeter wave passes through the gap between the deposited metal particles.

  As described above, when the millimeter wave passes through the decorative main body 21, the heater 35 is provided in a portion outside the region surrounded by the plurality of mounting seats 22a. This portion is a portion outside the transmission region Z1 in the decorative main body portion 21. Therefore, the heater 35 is unlikely to prevent millimeter wave transmission.

  The millimeter wave passes through a portion surrounded by the linear heater 35 in the main portion 33 a of the heating sheet 33 disposed between the rear transparent member 27 and the front transparent member 26. Similarly, the millimeter wave reflected by the vehicle or obstacle in front of the transmission direction is also transmitted through the decorative main body 21 and the heating sheet 33. Therefore, the millimeter wave is more easily transmitted through the emblem 20 than that in which the decorative main body portion is provided with the metal layer (Patent Document 2).

  In addition, at least in the transmission region Z1 (see FIG. 1) of the decoration main body 21 and the heating sheet 33, the thickness T in the front-rear direction of the emblem 20 is a value satisfying the above formula 1 and is uniform. The amount of attenuation when millimeter waves pass through is smaller than that in which unevenness is formed on the front surface of the glass and the thickness in the front-rear direction is not uniform (Patent Document 1).

  Further, when snow adheres to the front surface of the emblem 20, the window portion 12 of the front grill 11 is connected from the vehicle side through the connection terminal 13 for power feeding and the connection terminal 36 for power reception that are electrically connected to each other. Power is supplied to the heater 35 in the emblem 20. This power supply causes the heater 35 to generate heat. The heater 35 is arranged in an elliptical shape that surrounds the millimeter wave transmission region Z1. Therefore, a part of the heat generated by the heater 35 is transmitted from all directions toward the central portion of the transmission region Z1 surrounded by the heater 35. Due to this heat, the snow adhering to the portion that becomes the transmission region Z1 on the front surface of the emblem 20 is melted uniformly regardless of the adhering location.

  Here, the heating sheet 33 is arranged on the transparent member 25 (between the front transparent member 26 and the rear transparent member 27) that constitutes the front portion of the decorative main body portion 21. Located in a nearby location. Therefore, the heat of the heater 35 is easily transmitted to the snow attached to the front surface of the emblem 20. Snow is efficiently melted by the heat of the heater 35.

  By the way, the weighted deflection temperature of the AES resin constituting the substrate 22 is 78 ° C., which is not so high. However, the heat generated by the heater 35 being transmitted to the base material 22 is suppressed by the heat transfer suppression layer 37 formed between the main portion 33 a of the heating sheet 33 and the base material 22. Accordingly, deformation of the base material 22 due to heat from the heater 35 is suppressed. If the base material 22 is deformed by heat, the thickness T1 in the front-rear direction of the decorative main body portion 21 is not uniform, and the attenuation amount of the millimeter wave may increase. In the present embodiment, the attenuation amount of the millimeter wave is increased. It is kept in a small state. In addition, the amount of heat transmitted to the snow increases because the heat is less likely to be transmitted to the base material 22 and the snow melting function is improved.

  Further, the front transparent member 26 is protected from the front by the hard coat layer 31, and the front transparent member 26 is prevented from being damaged and from being deteriorated or deteriorated due to sunlight, wind and rain, temperature change, or the like. .

In addition, the said embodiment can also be implemented as a modification which changed this as follows.
-As a heating sheet, what formed the linear heater which consists of a transparent conductive film on a transparent resin sheet may be used. The transparent conductive film is formed, for example, by using ITO (indium tin oxide) as a material and performing sputtering, vapor deposition, or the like. In this case, since it becomes difficult to see a heater, the appearance of the decorative part for vehicles improves.

  -The said embodiment of the decoration main-body part 21 is provided on condition that the heating sheet 33 is arrange | positioned in the state piled up on one of the base material 22, the transparent member 25, and the decoration layer 32, or two adjacent. It may be arranged at a different location. For example, the heating sheet 33 may be arranged in a state where it is overlapped with the transparent member 25 from the front side. Further, the heating sheet 33 may be arranged in a state where it is overlapped with the base material 22 from the rear side. In this case, the heat transfer suppression layer 37 is unnecessary. Furthermore, the heating sheet 33 may be arranged in a state of being overlapped between the decorative layer 32 and the base material 22, or overlapped between the decorative layer 32 and the transparent member 25. You may arrange | position in the state made.

-The wiring pattern of the heater 35 in the main part 33a in the heating sheet 33 may be changed to a wiring pattern different from the above embodiment.
For example, the heater 35 may be a straight line. Even in the case where the heater 35 having this shape is used, the heater 35 is disposed in a portion of the decorative main body 21 outside the millimeter wave transmission region Z1 in order to make it difficult to prevent the millimeter wave transmission.

  For example, when a heater 35 that extends straight in the left-right direction is used, the heater 35 may be disposed on at least one of the upper part and the lower part of the heating sheet 33. When the heater 35 is used that extends in a straight line in the vertical direction, the heater 35 may be disposed on at least one of the left side portion and the right side portion of the heating sheet 33.

Unlike the above-described embodiment in which the heater 35 is provided as a part of the heating sheet 33, the heater 35 may be disposed alone on the decorative body 21.
-Outer peripheral part shown with a dashed-dotted line in Drawing 6 among main parts 33a of heating sheet 33 may be sealed by hot melt or potting (resin pile). If it carries out like this, it will restrict that the water produced by snow melting enters between the said outer peripheral part and the member (front transparent member 26 and rear transparent member 27) adjacent to this, and water resistance can be improved.

  In the above embodiment, depending on the combination of resin materials forming each of the front transparent member 26 and the rear transparent member 27, light is incident at a refractive index that makes it difficult to see the heating sheet 33 located at the boundary between them. It can be reflected.

  -Water repellency may be given to the front surface of the member located in the forefront part of the decorative part for vehicles. If it does in this way, it can suppress that the film | membrane of water forms on the front surface of the said member at the time of snow melting by repelling the water adhering to the front surface of the said member, and making the said member difficult to get wet.

  As a means for imparting water repellency, for example, a water repellent film made of an organic coating film, a silicone film, or the like may be formed on the front surface of the member. In addition, a texture may be formed on the molding surface of a mold used when molding the member, or nano-processing may be performed.

-Moreover, what has a hard-coat function may be used as said water-repellent film. In this case, the hard coat layer 31 may be omitted.
In each of the above embodiments, the emblem 20 may be attached to the vehicle body instead of the front grill 11.

-The decoration main-body part 21 may be formed in the plate shape of a shape different from an ellipse.
The condition that the vehicle decorative component is attached to the front of the millimeter wave transmission direction from the millimeter wave radar device 15 in the vehicle 10 to decorate the vehicle 10 and has millimeter wave permeability. In addition, it may be applied to a vehicle decorative part different from the emblem 20.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 15 ... Millimeter wave radar apparatus, 20 ... Emblem (decorative part for vehicles), 21 ... Decoration main-body part, 22 ... Base material, 22a ... Mounting seat, 25 ... Transparent member, 32 ... Decorating layer, 33 ... Heating sheet, 33a ... main part, 34 ... resin sheet, 35 ... heater, Z1 ... transmission region.

Claims (5)

In the vehicle, mounted in front of the millimeter wave transmission direction from the millimeter wave radar device, decorates the vehicle, and includes a decoration main body having millimeter wave permeability,
A decorative part for a vehicle, in which a heater is provided in a portion of the decorative main body portion outside the millimeter wave transmission region. At a plurality of locations on the rear surface of the decorative main body part, mounting seats for attaching the decorative main body part to the vehicle are formed,
The transmission region is set inside a region surrounded by a plurality of the mounting seats,
The vehicle decorative component according to claim 1, wherein the heater is provided in a portion outside an area surrounded by the plurality of mounting seats.   The decorative part for a vehicle according to claim 1, wherein the heater is linear and is arranged in an annular shape surrounding the transmission region. The decorative main body part is provided with a heating sheet partly formed of a resin sheet,
The vehicular decorative part according to any one of claims 1 to 3, wherein the heater is formed on the resin sheet in the heating sheet. The decorative body portion is
A base material formed of a resin material;
A transparent member formed of a resin material and disposed on the front side of the base material in the transmission direction;
A decorative layer formed between the base material and the transparent member and having millimeter wave permeability;
The vehicular decorative part according to claim 4, wherein the heating sheet is arranged in a state of being stacked on one or two adjacent ones of the base material, the transparent member, and the decorative layer.

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