JP6652031B2 - Vehicle decorative component and method of manufacturing the same - Google Patents

Description

  The present invention relates to a vehicle decorative component for decorating a vehicle and having the transparency of millimeter waves from a millimeter wave radar device, and to a method of manufacturing the vehicle decorative component.

  2. Description of the Related Art In a vehicle, a millimeter-wave radar device may be installed behind a decorative component for a vehicle such as a front grill or an emblem in order to measure a distance between vehicles or a distance to an obstacle by using a millimeter wave. Conventionally, this millimeter-wave radar device employs a measure to temporarily stop measurement when snow adheres to a decorative component for a vehicle. However, with the widespread use of millimeter wave radar devices, there is a demand for measurement even during snowfall.

Therefore, it has been considered to add a snow melting function to a vehicle decorative component. FIG. 10A shows an example of a vehicle decorative component 100 having a snow melting function.
The vehicle decorative component 100 includes a decorative body 101 and a heater 105. The decoration main body 101 is attached to the front of the millimeter wave radar device in the transmission direction of the millimeter wave in the vehicle, decorates the vehicle, and has millimeter wave transparency. The decoration main body 101 includes a transparent member 102 formed of a resin material, a base material 103 formed of a resin material, and disposed on the rear side of the transparent member 102 in the transmission direction, and the transparent member 102 and the base material. And a decorating layer 104 formed between the two. The heater unit 105 has a sheet shape, and has a heating element 106 that generates heat when energized. The heater unit 105 is disposed on the rear side of the base 103 in the transmission direction, and is adhered to the rear surface of the base 103.

FIG. 10B shows another example of the vehicle decorative component 100.
In the vehicle decorative component 100, the decorative layer 104 is formed on the rear surface of the transparent member 102 in the transmission direction. An annular frame portion 107 is formed on the peripheral edge of the front surface of the base material 103 in the transmission direction. The frame 107 is adhered to the rear peripheral edge of the transparent member 102 by an adhesive layer 108 made of a hot melt adhesive or the like. In a gap G1 between the transparent member 102 and the base 103 and surrounded by the frame 107, a sheet-like heater 105 having a heating element 106 is arranged. Is adhered to.

  In any of the vehicle decorative components 100 described above, the millimeter wave transmitted from the millimeter wave radar device passes through the decorative main body 101 and the heater 105 located forward in the transmission direction. Millimeter waves reflected on an object such as a vehicle or an obstacle ahead in the transmission direction also transmit through the decoration body 101 and the heater 105 in the same manner.

  When the heating element 106 in the heater section 105 is energized, the heating element 106 generates heat. Therefore, even if snow adheres to the vehicle decorative component 100, the heating element 106 is energized and generates heat, so that the snow is melted by the heat transmitted from the heating element 106.

  Patent Literatures describing a vehicle decorative component having a snow melting function include, for example, Patent Literature 1 and Patent Literature 2.

JP-A-2004-138572 JP 2002-22821 A

  In the vehicle decorative component 100 shown in FIG. 10A, the heater unit 105 is disposed on the rear side of the base member 103 in the millimeter wave transmission direction and is exposed. Therefore, there is a possibility that water may enter and touch the heater unit 105.

  Further, in the vehicle decorative component 100 shown in FIG. 10B, the adhesive layer 108 interposed between the transparent member 102 and the frame 107 of the substrate 103 causes the decorative member 100 between the transparent member 102 and the substrate 103. Water can be restricted from entering the gap G1 surrounded by the frame 107. On the other hand, since the relative dielectric constant of the air in the gap G1 is significantly different from the relative dielectric constants of the transparent member 102 and the base material 103 formed of the resin material, there is a possibility that the millimeter wave transmission performance is reduced. Note that the vehicle decorative component 100 described with reference to FIG. 10A does not have the gap G1 and thus does not easily cause such a problem.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle decorative component capable of improving the transmission performance of millimeter waves while suppressing water intrusion, and a method of manufacturing the same. Is to provide.

  A decorative component for a vehicle that solves the above-mentioned problem is mounted in a vehicle in front of a transmitting direction of a millimeter wave from a millimeter wave radar device to decorate the vehicle and a decorative main body having a millimeter wave transmittance, A sheet-like heater section having a heating element that generates heat when energized, wherein the decoration main body section is formed of a transparent member formed of a resin material, and formed of a resin material, and the rear side of the transparent member in the transmission direction. And a decorative layer formed between the transparent member and the base material, wherein the base material is a front base material and a rear side of the front base material in the transmission direction. The main part including the heating element of the heater unit is sandwiched from the front and rear in the transmission direction by the front base and the rear base, the front base and The post-base material is Wherein the data portion are joined to each other in a state where the main portion is sealed, the gap portion in contact with the main portion in the substrate is filled by the same resin material as the base material.

  According to the above configuration, the millimeter wave transmitted from the millimeter wave radar device passes through the decoration main body and the heater of the vehicle decoration component positioned forward in the transmission direction. Millimeter waves reflected on an object such as a vehicle or an obstacle ahead in the transmission direction also transmit through the decoration body and the heater in the same manner.

  Here, the main part including the heating element of the heater part is sandwiched between the front base material and the rear base material constituting the base material from the front and rear in the transmission direction. In addition, the void portion in contact with the main portion in the base material is filled with the same resin material as the base material, and the base material has no internal void portion. For this reason, a decrease in the millimeter wave transmission performance due to the air in the gap is suppressed.

  Further, a front base material and a rear base material which sandwich the main part of the heater section from front and rear in the transmission direction are joined to each other while sealing the heating element, and the base material is a front base material and a rear base material. There is no gap between them. Therefore, it is possible to prevent water from entering between the front base material and the rear base material and touching the main part of the heater portion.

  Further, when the heating element of the heater section is energized, the heating element generates heat. Therefore, even if snow adheres to the vehicle decorative component, the heating element is energized and generates heat, so that the snow is melted by the heat transmitted from the heating element.

In the vehicle decorative component, it is preferable that the void portion in contact with the main portion in the base member is filled with a part of the base member or a member different from the base member.
According to the above configuration, the base material has a void portion in contact with the main part inside thereof, which is filled with a part of the base material or formed separately from the base material using the same resin material as the base material. By being buried by the member, a state in which there is no void portion inside is obtained.

  In the vehicle decorative component, the front base member includes a general portion and a convex portion protruding forward in the transmission direction from the general portion, and the gap in contact with the main portion in the base member. It is preferable that the portion has a gap between the dent formed on the rear surface of the front substrate in the transmission direction behind the convex portion and the main portion.

  Here, the general portion, the front base having a convex portion protruding forward in the millimeter wave transmission direction than the general portion, when molded using a resin material, in the portion having the convex portion, The amount of volume shrinkage when the molten material is cooled is larger than that of the portion having the general portion. A recess may occur due to sink marks on the rear surface of the front base material in the transmission direction and behind the convex portion, and a gap may be generated between the recess and the main portion of the heater portion. However, this void is filled with a part of the base material or with a member formed separately from the base material using the same resin material as the base material.

  In the vehicle decorative component, the heater portion is provided with a penetrating portion that penetrates the heater portion in the transmission direction at least at a location different from the heating element, and the rear base member is disposed in the transmission direction. It is preferable that a connecting portion protruding forward and filling the through portion is provided, and the connecting portion is directly or indirectly bonded to the front substrate.

  According to the above configuration, the front substrate and the rear substrate of the substrate are separated from each other before and after the main portion of the heater in the transmission direction. However, a connecting portion that protrudes forward in the transmission direction from the rear substrate and fills the through portion is directly or indirectly bonded to the front substrate. For this reason, the rear substrate is more firmly joined to the front substrate as compared to a case where such a joint is not provided.

  A method of manufacturing a decorative component for a vehicle, which solves the above-described problem, is a decorative body having a vehicle mounted in front of a millimeter wave radar device in a transmitting direction of a millimeter wave to decorate the vehicle and have millimeter wave permeability. And a sheet-shaped heater section having a heating element that generates heat when energized, wherein the decoration main body section is formed of a transparent member formed of a resin material, and a transparent member formed of a resin material, and the transparent member in the transmission direction. A substrate disposed on the rear side, and a decorative layer formed between the transparent member and the substrate, wherein the substrate is a front substrate, and the front substrate in the transmission direction. A method for manufacturing a decorative component for a vehicle, which is divided into a rear substrate and a rear substrate disposed on a rear side, wherein the transparent member, the decorative layer, and the front substrate are sequentially formed, and then the transmission member in the transmission direction is formed. Behind the front substrate, As an insert those arranged a main part containing the heating element parts, the rear substrate is formed by insert molding.

  According to the above manufacturing method, after the transparent member, the decorative layer, and the front substrate are sequentially formed, the insert in which the main portion of the heater section is disposed on the rear side of the front substrate in the transmission direction, The back substrate is formed by insert molding. That is, the insert is loaded in the mold, and the molten resin is injected and cured in the mold, so that the main portion of the heater portion in the transmission direction is provided with the main portion sealed in front. After being joined to the substrate, the substrate is formed.

  In the method for manufacturing a decorative component for a vehicle, the insert molding is performed by using, as the heater, a heater provided with a penetrating portion penetrating the heater in at least a location different from the heating element in the transmission direction. Preferably.

  According to the above manufacturing method, the molten resin injected into the mold during the insert molding is cured, so that the rear side of the main part of the heater in the transmission direction is connected to the front base material in the rear direction. A substrate is formed. Further, by filling the through portion of the heater portion with the molten resin and curing, the rear base member is formed with a connecting portion that projects forward in the transmission direction and fills the through portion. By joining this joint directly or indirectly to the front substrate, the rear substrate is more firmly joined to the front substrate as compared to a case where such a joint is not formed.

  In the method for manufacturing a decorative component for a vehicle, the front base material includes a general part and a convex part protruding forward in the transmission direction from the general part, and the insert molding includes the heater. It is preferable that the process is performed in a state where the penetrating portion of the portion communicates with a recess formed behind the protrusion on the rear surface of the front substrate in the transmission direction.

  Here, the general portion, the front base having a convex portion protruding forward in the millimeter wave transmission direction than the general portion, when molded using a resin material, in the portion having the convex portion, The volume shrinkage when the molten material is cooled is larger than that of the portion having the general portion. A recess due to sink marks is formed on the rear surface of the front base material in the transmission direction and behind the convex portion. A void is formed between the depression of the front substrate and the main part of the heater. However, the voids are filled with the molten resin that has passed through the penetrating portions when insert molding the post-base material.

  ADVANTAGE OF THE INVENTION According to the said decorative component for vehicles and its manufacturing method, the penetration performance of a millimeter wave can be improved, suppressing the invasion of water.

FIG. 1 is a front view showing an emblem in one embodiment in which a vehicle decorative component is embodied in an emblem. FIG. 2 is a schematic front view showing a heater section in the emblem of FIG. 1 together with a millimeter wave irradiation area and a polarization plane. FIG. 2 is a side cross-sectional view showing a state in which the emblem according to the embodiment is attached to a front grill, together with a millimeter wave radar device. FIG. 3 is a perspective view illustrating a relationship between a heating element and a plane of polarization of a millimeter wave according to the embodiment. FIG. 4 is a partial side sectional view showing part A of FIG. 3 in an enlarged manner. (A)-(e) is a partial sectional side view explaining the state in which the emblem in one embodiment is being manufactured. 3A and 3B are partial side sectional views illustrating a state in which the emblem according to the embodiment is being manufactured. It is a figure which shows the modification of an emblem, and is a partial side sectional view corresponding to FIG. FIG. 10 is a partial side sectional view showing a modification of the mounting structure of the emblem to the front grill. (A), (b) is a sectional side view of the conventional decorative component for vehicles.

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

  As shown in FIGS. 3 and 4, a front grill 11 for cooling the radiator by introducing outside air such as running wind into the engine room is attached to the front of the engine room of the vehicle 10.

  In addition, at the rear of the front grill 11 and in front of the radiator, A. C. C. (Adaptive cruise control) is provided with a millimeter wave radar device 25 functioning as a sensor. The millimeter wave radar device 25 transmits the millimeter wave 26 and receives the millimeter wave 26 reflected on the object. The millimeter wave 26 is transmitted from the millimeter wave radar device 25 so as to vibrate on a plane of polarization 27 parallel to the vertical plane. The millimeter wave radar device 25 measures the inter-vehicle distance and the relative speed between the preceding vehicle and the vehicle (the vehicle 10) from the difference between the transmitted millimeter wave 26 (transmitted wave) and the received millimeter wave 26 (received wave). The millimeter wave 26 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 25 to accelerate and decelerate the own vehicle (vehicle 10) and control the inter-vehicle distance.

  The thickness of the front grill 11 is not constant, as in a general front grill. Further, in the front grill 11, a metal plating layer may be formed on the surface of the resin base material as in the case of a general front grill. Therefore, the front grill 11 interferes with the transmitted or reflected millimeter wave 26. For this reason, in the front grill 11, a window portion 12 is provided at a location on the path of the millimeter wave 26 of the millimeter wave radar device 25, specifically, at a location forward of the millimeter wave 26 from the millimeter wave radar device 25 in the transmission direction. Is provided.

  As shown in FIGS. 1 and 3, the emblem 30 is attached to the front of the vehicle 10 in the direction of transmitting the millimeter waves from the millimeter wave radar device 25 to decorate the vehicle 10 and have the millimeter wave transparency. The decoration body 31 includes a heater section 55 having a heating element 57 that generates heat when energized.

  The decoration main body 31 includes a transparent member 32, a base material 35, a connecting portion 45, and a decoration layer 50, and has a substantially elliptical plate shape as a whole. The decoration main body 31 is gently curved so as to expand forward.

  The transparent member 32 is a member that constitutes a front portion of the emblem 30. The transparent member 32 is transparently formed of a resin material such as PC (polycarbonate) resin which is a resin material having a small dielectric loss tangent (an index value indicating the degree of electric energy loss in the dielectric). The dielectric loss tangent of the PC resin is 0.006. If the dielectric loss tangent is small, it is difficult to convert the millimeter wave 26 into heat energy, so that the attenuation of the millimeter wave 26 can be suppressed.

  FIG. 5 is an enlarged view of part A of FIG. As shown in FIG. 5, a rear portion of the transparent member 32 is formed with a general portion 33 substantially orthogonal to the front-rear direction and a concave portion 34 recessed forward of the general portion 33. The general portion 33 corresponds to the background region 30a of the emblem 30 in FIG. 1, and the concave portion 34 corresponds to the pattern region 30b of the emblem 30. Here, the pattern area 30b is constituted by the character (A) and the annular portion around it. The transparent member 32 may be formed of PMMA (polymethyl methacrylate) resin, which is a resin material having a small dielectric loss tangent, similarly to the PC resin.

  A hard coat layer (not shown) is formed on the front surface of the transparent member 32 by applying a known surface treatment agent to the resin. Examples of the surface treatment agent include organic hard coat agents such as acrylate, oxetane, and silicone, inorganic hard coat agents, and organic-inorganic hybrid hard coat agents. The hard coat layer formed by such a hard coat agent has an anti-scratch action, an anti-stain action, an improvement in light resistance and weather resistance by ultraviolet rays cut, an improvement in water repellency, etc. on the front surface of the transparent member 32. Brings useful effects. In addition, the hard coat layer may be colored as needed within a range in which the millimeter wave 26 can be transmitted.

  As shown in FIGS. 3 and 5, the base material 35 is a member constituting the rear portion of the emblem 30, and is made of a resin such as AES (acrylonitrile-ethylene-styrene copolymer) resin which is a resin material having a small dielectric loss tangent. It is colored depending on the material. The dielectric loss tangent of the AES resin is 0.007, and the relative dielectric constant is almost the same as that of the PC resin. Further, the base material 35 is divided into a front base material 36 constituting a front part thereof and a rear base material 41 constituting a rear part thereof. The front part of the front base material 36 is formed in a shape corresponding to the shape of the rear part of the transparent member 32. That is, a general portion 37 that is substantially orthogonal to the front-rear direction is formed in a front portion of the front base material 36 and behind the general portion 33 of the transparent member 32. In the front part of the front base material 36, at a position behind the concave part 34 of the transparent member 32, a convex part 38 projecting forward from the general part 37 is formed.

  Here, in the front substrate 36 including the general portion 37 and the convex portion 38 as described above, the thickness of the portion including the convex portion 38 is larger than the thickness of the portion including the general portion 37. For this reason, when the front base material 36 is formed of a resin material, the volume shrinkage when the molten material is cooled is larger in the portion having the convex portion 38 than in the portion having the general portion 37. For this reason, a recess 39 due to sink may be formed on the rear surface of the front base material 36 and behind the convex portion 38.

  At a plurality of locations on the rear surface of the rear base material 41 outside the millimeter wave irradiation region Z1 (see FIG. 2), mounting portions 42 for mounting the decorative main body 31 to the front grill 11 project rearward. It is formed so that.

  In addition, the base material 35 (the front base material 36 and the rear base material 41) is a resin having a relative dielectric constant close to that of the transparent member 32, for example, an ASA (acrylonitrile-styrene-acrylate copolymer) resin, PC It may be formed of a resin, PC / ABS (acrylonitrile-butadiene-styrene copolymer) resin, or the like.

  The connecting portion 45 has a substantially elliptical annular shape by being provided along the outer peripheral portion of the emblem 30, and is located outside the irradiation region Z1 (see FIG. 2). The connecting portion 45 is formed in black by, for example, a mixed resin material of PC resin and carbon black. The connecting portion 45 connects the transparent member 32 and the front substrate 36 by being welded to the transparent member 32 and the front substrate 36.

  The decorative layer 50 is for decorating the front portion of the vehicle 10 including the front grill 11, and is formed between the transparent member 32 and the front base material 36 and in a region surrounded by the connecting portion 45. And has a millimeter-wave transmittance. The decoration layer 50 is configured by, for example, a combination of a colored layer 51 such as black and a metal layer 52. The colored layer 51 is formed on the general portion 33 of the transparent member 32 by a method such as printing. The metal layer 52 is formed by depositing a metal material such as indium on the wall surface of the concave portion 34 of the transparent member 32 and the entire rear surface of the colored layer 51.

  As shown in FIGS. 2 and 5, the heater section 55 is configured by a so-called planar heating element, a film heater, or the like. The heater section 55 includes, as constituent members, a linear heating element 57, an electrode 61, a thermistor 62, a resin sheet 63, and a connector 65. The heating element 57, the electrode 61, and the thermistor 62 are covered by being sandwiched between resin sheets 63 from front and rear. The heating element 57, the electrode 61, the thermistor 62, and the resin sheet 63 form a main portion 56 of the heater section 55.

  As the resin sheet 63, for example, a sheet formed of a polyimide resin is used. As the linear heating element 57, for example, a nichrome wire, a SUS etching heater, a carbon heating element, a silver paste, a transparent conductive film, or the like is used.

  As shown in FIGS. 2 and 4, the heating element 57 includes a plurality of linear portions 58 extending in parallel with each other, and an arc-shaped folded portion 59 connecting ends of the adjacent linear portions 58. . The linear portion 58 is configured to suppress the attenuation when the millimeter wave 26 passes through the heater portion 55 (hereinafter, referred to as a “millimeter wave attenuation suppression mode”). It is incorporated in the part 55. Since the polarization plane 27 is parallel to the vertical plane, each linear portion 58 is wired so as to extend in the horizontal direction (left-right direction).

  Some linear portions 58 of all the linear portions 58 are arranged in the irradiation area Z1 of the millimeter wave 26 in the heater portion 55. The heating element 57 has a state in which the area ratio of all the linear portions 58 in the irradiation area Z1 within the irradiation area Z1 is set to be equal to or less than the allowable value of the attenuation amount of the millimeter wave 26 as the millimeter wave attenuation suppression mode. And is incorporated in the heater section 55. In the present embodiment, the wiring pattern of the heating element 57, for example, the width of the linear portion 58, the width of the adjacent straight line, is set so that the allowable value of the attenuation of the millimeter wave 26 is 2.5 dB and the area ratio is 10% or less. The interval (pitch) of the portion 58 is set.

  The electrodes 61 are connected to both ends of the heating element 57. The thermistor 62 is a resistor whose resistance value changes in accordance with a change in temperature, and is used as a temperature detecting element. The thermistor 62 is provided in the middle of one of the electrodes 61, and is connected to an electronic control unit (not shown) provided in the vehicle 10 at a location away from the emblem 30. The electronic control unit adjusts the temperature of the heater section 55 by controlling the energization of the heating element 57 through the electrode 61 based on the detection value of the thermistor 62.

A connector having a waterproof structure is used as the connector 65, which is connected to the ends of both electrodes 61. The connector 65 protrudes rearward from the resin sheet 63.
The folded portion 59, the electrode 61, and the thermistor 62 of the heating element 57 are incorporated in the heater section 55 at a position outside the irradiation area Z1 of the millimeter wave 26 in the heater section 55 as a millimeter wave attenuation suppression mode. In particular, the electrode 61 and the thermistor 62 are incorporated in the heater section 55 at a position higher than the irradiation area Z1.

  Further, as shown in FIGS. 3 and 5, there are uncovered portions that do not cover the heating element 57, the electrode 61, and the thermistor 62 at a plurality of portions of the resin sheet 63. At least a part thereof is provided with a penetrating portion 64 penetrating in the front-rear direction. Each penetrating portion 64 is formed, for example, by punching a resin sheet 63. A part of the plurality of through-holes 64 is connected to the recess 39 behind the protrusion 38 on the rear surface of the front base 36.

  Of the heater section 55, the main section 56 is disposed between the front base 36 and the rear base 41, and the connector 65 is exposed on the rear surface of the rear base 41. The front base material 36 and the rear base material 41 sandwiching the main portion 56 of the heater portion 55 from both front and rear sides are joined to each other by welding while the main portion 56 is sealed. That is, the rear substrate 41 is joined to the rear surface of the front substrate 36 around the main portion 56 of the heater section 55 by welding.

  In addition, the rear base material 41 has the same number of depression filling portions 43 as the depressions 39 and the same number of coupling portions 44 as the penetration portions 64. Each recess filling portion 43 is joined to a wall surface of the recess 39 in a state where the recess 39 is filled. In addition, each coupling portion 44 protrudes forward from a location on the front surface of the rear base material 41 and behind the through portion 64 to fill the through portion 64.

  Of the plurality of penetrating portions 64, the joining portion 44 that fills a portion that is not connected to the depression 39 of the front substrate 36 is directly joined to a portion of the rear surface of the front substrate 36 that is different from the depression 39. Further, of the plurality of penetrating portions 64, the joining portion 44 that fills one that is connected to the depression 39 of the front base material 36 is connected to the depression filling portion 43, and the front base material is connected through the depression filling portion 43. The rear surface 36 is indirectly joined to the depression 39.

  Further, assuming that at least the dimension of the emblem 30 in the front-rear direction in the irradiation area Z1 of the decoration body 31 and the heater 55 is the thickness T, the thickness T is substantially equal to a value satisfying the following equation 1. Is set uniformly. Here, “substantially equal thickness” means a thickness included within an error range of ± 0.2 mm.

T = ｛(λe / 2) / √ (εp)｝ n (Equation 1)
The meaning of each symbol in the above formula is as follows.
λe: wavelength of the millimeter wave εp: relative dielectric constant of the transparent member 32 (or the base material 35) n: integer As described above, the thickness T of the emblem 30 is an integer of a value obtained by dividing half a wavelength by the square root of the relative dielectric constant. It is set to double.

  As shown in FIG. 3, in the front grill 11, around the window 12, there is provided an attachment portion 13 to which the emblem 30 having the above configuration is attached. The attachment portion 13 includes an upper attachment portion 14 above the window portion 12 and a lower attachment portion 17 below the window portion 12.

  As described above, the attachment portion 42 is formed on the rear surface of the rear base material 41. The upper attachment portion 14 is provided with the insertion hole 15 into which the attachment portion 42 is inserted. Similar insertion holes 15 are provided at a plurality of locations around the window 12 in the attachment portion 13 in addition to the upper attachment portion 14. Further, the lower covering portion 17 has a curved portion 18 having an arc-shaped cross section at a front end portion.

  Then, the respective mounting portions 42 are inserted into the corresponding insertion holes 15 from the front and locked, so that the emblem 30 is mounted on the mounting portion 13 in an upright state so as to satisfy the following condition. Have been. The standing state includes not only a vertical state but also a state inclined with respect to the vertical state. In the present embodiment, a state in which the upper part of the emblem 30 is slightly inclined so as to be located slightly rearward of the lower part is defined as the upright state.

  The above condition is that the front end 30c of the emblem 30 (decoration main body 31) is the same as the front end 17a of the lower adhered portion 17, or is located ahead of the front end 17a. The front end 30c of the emblem 30 is a portion located on the front side of the front surface of the emblem 30. In the present embodiment in which the emblem 30 is slightly inclined so that the upper part is located slightly behind the lower part, the lower end of the front surface of the emblem 30 corresponds to the front end 30c. The front end 17a of the lower adhered portion 17 is constituted by the front end of the curved portion 18 in the present embodiment in which the lower adhered portion 17 has the curved portion 18. In the present embodiment, the front end 30c of the emblem 30 (decoration main body 31) is located at a position away from the front end 17a of the lower adhered portion 17 by a distance D (> 0) forward.

  Further, the connector 66 on the vehicle 10 side is coupled to the connector 65 exposed on the rear surface of the rear base member 41 from the rear side, so that the heater section 55 is electrically connected to the electronic control device and the like. . The cable 67 connected to the connector 66 is passed through the insertion hole 16 provided in the upper covering portion 14.

Next, the operation and effect of the emblem 30 of the present embodiment configured as described above will be described together with the manufacturing method.
First, a method of manufacturing the emblem 30 will be briefly described with reference to FIGS. 6 and 7, the left side of the drawing corresponds to the front of the emblem 30, and the right side of the drawing corresponds to the rear of the emblem 30.

First, as shown in FIG. 6A, a transparent member 32 having a general portion 33 and a concave portion 34 at a rear portion is formed by injection molding.
As shown in FIG. 6B, a colored layer 51 is formed by performing printing, such as screen printing, on the general portion 33 of the transparent member 32 using a black paint or the like.

  As shown in FIG. 6C, the metal layer 52 is formed by depositing a metal material such as indium on the wall surface of the concave portion 34 of the transparent member 32 and the entire colored layer 51. Thus, the decorative layer 50 including the colored layer 51 and the metal layer 52 is formed on the rear surface of the transparent member 32.

  As shown in FIG. 6D, the front substrate 36 is formed by insert molding. That is, the intermediate molded body 71 (see FIG. 6C) in which the decorative layer 50 is formed on the rear surface of the transparent member 32 is used as an insert and placed in a mold. A molten resin material made of AES resin is injected into a mold and cured. On the rear side of the transparent member 32 and the decorative layer 50, an intermediate molded body 72 in which the front substrate 36 having the general portion 37 and the convex portion 38 is integrated is formed.

  When the front base material 36 is molded in this manner, the volume having the volume shrinkage when the molten material is cooled is larger in the portion having the convex portion 38 than in the portion having the general portion 37. A recess 39 due to sink may be formed on the rear surface of the front base material 36 and behind the convex portion 38.

  As shown in FIG. 6E, the connecting portion 45 is formed by performing two-color molding using a mixed resin material of PC resin and carbon black. The two-color molding is one mode of a method of molding a resin material, and is performed by combining dissimilar materials (materials) and integrally molding. In the two-color molding, after forming the primary side portion (intermediate molded body 72: see FIG. 6D), the secondary side portion (connecting portion 45) in the same mold is connected to the primary side. Is formed integrally with the portion (intermediate molded body 72). At the time of the two-color molding, when the mixed resin material in the molten state touches the transparent member 32 and the front base 36, a part of the transparent member 32 and a part of the front base 36 are melted, and the molten state of the molten state is obtained. Mixes with mixed resin materials. A boundary portion between the connecting portion 45 and the transparent member 32 is welded to each other, and a boundary portion between the connecting portion 45 and the front substrate 36 is welded to each other. The intermediate molded body 73 is formed by connecting the transparent member 32 and the front base material 36 via the connecting portion 45.

  As shown in FIG. 7A, the main portion 56 of the heater section 55 is disposed behind the front substrate 36 in the intermediate molded body 73 (see FIG. 6E). This arrangement is performed such that a part of the penetrating portion 64 of the main portion 56 communicates with the recess 39 formed behind the convex portion 38 on the rear surface of the front substrate 36. The main portion 56 thus arranged is bonded to the rear surface of the front substrate 36. In this state, a gap G1 is formed between the depression 39 of the front base 36 and the main portion 56.

  As shown in FIG. 7B, the rear substrate 41 is formed by insert molding. That is, the intermediate molded body 74 (see FIG. 7A) in which the main part 56 is adhered to the front base material 36 as described above is used as an insert and arranged in the mold. A molten resin material made of AES resin, which is the same resin material as the front base material 36, is injected into a mold. When this resin material is cured, the rear substrate 41 having the attachment portion 42 and being joined to the front substrate 36 while sealing the main portion 56 behind the front substrate 36 and the main portion 56. Is formed.

  Further, the front base material 36 and the rear base material 41 are separated from each other before and after the main portion 56. However, when the penetration portion 64 is filled with the molten resin and cured, the rear base 41 has a joining portion 44 that projects forward and fills the penetration portion 64.

Of the plurality of penetrating portions 64, the joining portion 44 that fills a portion that is not connected to the depression 39 of the front substrate 36 is directly joined to a position different from the depression 39 on the rear surface of the front substrate 36.
In addition, a gap G1 generated between the depression 39 and the main portion 56 due to sink in the rear surface of the front base material 36 and behind the convex portion 38 is connected to a part of the through portion 64. . Therefore, the gap portion G1 is filled with the molten resin that has passed through the penetrating portion 64 connected to the gap portion G1, that is, with the hollow filling portion 43 that forms a part of the rear substrate 41. In other words, of the plurality of penetrating portions 64, the joining portion 44 that fills the one that is connected to the depression 39 of the front base 36 is formed by the depression filling portion 43 on the rear surface of the front base 36. Indirectly joined to

Therefore, the rear substrate 41 is more firmly joined to the front substrate 36 as compared with a case where such a joint portion 44 is not formed.
Then, a hard coat layer (not shown) is formed by applying a surface treatment agent to the front surface of the transparent member 32. Further, the target emblem 30 is obtained by attaching the connector 65 from the rear side of the rear base material 41 in a state of being connected to the electrode 61 of the heater section 55.

  In the emblem 30, the decorative layer 50 formed between the base material 35 and the transparent member 32 has a function of decorating the front part of the vehicle 10. When the emblem 30 is viewed from the front, light is reflected by the decorative layer 50 formed in an uneven shape. Therefore, through the hard coat layer and the transparent member 32, a pattern including a character having metallic luster can be seen three-dimensionally on the back side thereof.

  The decorative layer 50, the front substrate 36, and the connecting portion 45 are arranged on the front side of the heater portion 55, and these function to hide the heater portion 55. Therefore, from the front of the emblem 30, the heater section 55 is difficult to see, and the appearance is not easily impaired.

  When the millimeter wave 26 is transmitted forward from the millimeter wave radar device 25 in order to measure the inter-vehicle distance and the relative speed between the preceding vehicle and the own vehicle (vehicle 10), the millimeter wave 26 The material 41, the heater portion 55, the front substrate 36, the decorative layer 50, the transparent member 32, and the hard coat layer are respectively transmitted. The millimeter wave 26 reflected on an object such as a vehicle or an obstacle ahead in the transmission direction also transmits through the decoration body 31 and the heater 55 in the same manner as described above.

  Attenuation when the millimeter wave 26 passes through the heater section 55 is suppressed by the members included in the heater section 55 that are incorporated in the heater section 55 in a millimeter wave attenuation suppression mode as described below.

  (1) As shown in FIG. 2, a portion of the heating element 57 arranged in the irradiation area Z1 of the millimeter wave 26 in the heater section 55 tries to prevent the transmission of the millimeter wave 26. As the number of heating elements 57 increases in irradiation area Z1, the attenuation of millimeter wave 26 increases. In this regard, in the present embodiment, focusing on the area ratio of the heating element 57 in the irradiation area Z1 in the irradiation area Z1, the heating element 57 has an area ratio of less than the allowable value of the attenuation of the millimeter wave 26. It is incorporated in the heater section 55 in a state set as described above. That is, the wiring pattern (width, pitch, etc.) of the heating element 57 is set so that the allowable value is 2.5 dB and the area ratio is 10% or less.

  Therefore, even if a portion of the heating element 57 disposed in the irradiation area Z1 prevents transmission of the millimeter wave 26, the amount of attenuation of the millimeter wave 26 when transmitting through the heater unit 55 is an allowable value. It can be suppressed to a certain 2.5 dB or less.

  (2) The electrode 61 and the thermistor 62 in the heater section 55 can be a factor that hinders the transmission of the millimeter wave 26. In this regard, in the present embodiment, as shown in FIG. 2, the electrode 61 and the thermistor 62 are incorporated into the heater unit 55 at a position outside the irradiation region Z1 of the millimeter wave 26 in the heater unit 55. Therefore, compared to the case where both the electrode 61 and the thermistor 62 are arranged in the irradiation area Z1, the transmission of the millimeter wave 26 is less likely to be hindered, and the attenuation when the millimeter wave 26 transmits through the heater 55 is reduced.

  (3) Assuming that the linear portion 58 of the heating element 57 is parallel to the polarization plane 27 of the millimeter wave 26, the millimeter wave 26 transmitted so as to vibrate on the plane of polarization 27 becomes a straight line. There may be surface contact with the part 58. Due to this surface contact, the transmission of the millimeter wave 26 through the heater 55 is prevented, and the millimeter wave 26 is attenuated.

  On the other hand, as shown in FIGS. 2 and 4, when the linear portion 58 is inclined with respect to the polarization plane 27, the area where the millimeter wave 26 contacts the linear portion 58 is, as described above, the same linear portion. 58 is less than when parallel to the polarization plane 27. The amount by which the transmission of the millimeter wave 26 is hindered by the linear portion 58 is reduced, and the attenuation of the millimeter wave 26 is reduced.

  Particularly, in the present embodiment, the linear portion 58 is incorporated in the heater portion 55 in a state orthogonal to the polarization plane 27. Therefore, the area where the millimeter wave 26 comes into contact with the linear portion 58 is the smallest among the cases where the linear portion 58 is inclined with respect to the polarization plane 27. The amount of the millimeter wave 26 whose transmission is hindered by the linear portion 58 is minimized, and the attenuation of the millimeter wave 26 is minimized.

(4) The folded portion 59 of the heating element 57 connects adjacent linear portions 58 in a state of extending in parallel with each other, and has a portion inclined with respect to the linear portion 58.
Therefore, even if the linear portion 58 is inclined (orthogonal) to the polarization plane 27 as described above, there is a possibility that the millimeter wave 26 comes into surface contact with the folded portion 59. In this case, the transmission of the millimeter wave 26 through the heater 55 is hindered and attenuated, although not so much as when the linear portion 58 is parallel to the polarization plane 27.

  In this regard, as shown in FIG. 2, when the folded portion 59 is arranged in the heater portion 55 at a position outside the irradiation region Z1 of the millimeter wave 26, the folded portion 59 is arranged in the irradiation region Z1. The transmission of the millimeter wave 26 is less likely to be hindered, and the amount of attenuation when the millimeter wave 26 transmits through the heater 55 is reduced.

  As a result, the amount of attenuation when the millimeter waves 26 pass through the heater unit 55 is reduced as compared with those in which none of the constituent members of the heater unit 55 are incorporated in the heater unit 55 in the above-described various millimeter wave attenuation suppression modes.

  Here, the main portion 56 of the heater portion 55 including the heating element 57 is sandwiched between the front base material 36 and the rear base material 41 constituting the base material 35 from front and rear. Moreover, the gap G1 in contact with the main portion 56 in the base material 35 is filled with a part of the rear base material 41, that is, the same resin material as the base material 35, and the base material 35 Is not provided. Therefore, when the gap G1 is not buried, there is a possibility that the millimeter wave transmission performance may be reduced due to the air in the gap G1, but in the present embodiment, such reduction in the millimeter wave transmission performance is suppressed. Is done.

  Further, in at least the irradiation area Z1 (see FIG. 2) of the decoration main body 31 and the heater 55, the thickness T of the emblem 30 in the front-rear direction is a value satisfying the above equation 1, and is uniform. Therefore, the amount of attenuation when the millimeter wave 26 is transmitted is smaller than that in the case where the thickness T is not uniform.

  Therefore, since the amount of attenuation when the millimeter wave 26 passes through the emblem 30 is small as described above, the function of the millimeter wave radar device 25 such as measuring the distance between vehicles or the distance to an obstacle using the millimeter wave 26 is used. Can be sufficiently exhibited.

  When snow adheres to the front surface of the emblem 30, an electronic control unit (not shown) controls energization of the heating element 57 through the electrode 61 based on the detection value of the thermistor 62. The heating element 57 generates heat by this energization. Part of the heat generated by the heating element 57 is transmitted to the front surface of the emblem 30, and melts snow attached to the front surface.

  Note that the temperature of the heater 55 is adjusted by controlling the power supply of the electronic control unit, thereby preventing the temperature of the heater 55 from becoming excessively high. Is suppressed.

In addition, according to the present embodiment, the following operations and effects can be obtained.
In the present embodiment, the front substrate 36 and the rear substrate 41 that sandwich the main portion 56 of the heater section 55 from both front and rear sides are mechanically joined to each other by welding. Therefore, the deterioration of the bonded portion with time is less likely to occur than when the front base material 36 and the rear base material 41 are chemically bonded by an adhesive. The state in which the front base material 36 and the rear base material 41 are joined can be maintained for a long time.

  The resin sheet 63 in the heater unit 55 hinders the transmission of the millimeter wave 26 to a considerable extent. In this regard, in the present embodiment, the penetrating portion 64 is provided in an uncovered portion of the resin sheet 63 that does not cover the heating element 57, the electrode 61, and the thermistor 62. Therefore, the attenuation of the millimeter wave 26 when transmitting through the resin sheet 63 can be suppressed as compared with the case where the resin sheet 63 is not provided with the through portion 64.

  When the depression 39 due to sink occurs on the rear surface of the front base material 36, the thickness of the emblem 30 becomes smaller at that location than the surroundings, and deviates from the thickness T represented by the above equation (1). In this regard, in the present embodiment, the depression 39 is filled with a depression filling portion 43 formed of the same resin material as the base material 35. For this reason, the thickness of the emblem 30 in the front-rear direction in the irradiation region Z1 (see FIG. 2) of the millimeter wave 26 can be made closer to the thickness T of Expression 1 as compared with the case where the recess filling portion 43 is not provided. The influence of the depression 39 caused by sinking on the thickness T can be reduced, and in this regard, attenuation when the millimeter wave 26 passes through the emblem 30 can be reduced.

  The front base material 36 and the rear base material 41 sandwiching the main portion 56 of the heater portion 55 from the front and rear are joined to each other while sealing the main portion 56, and the base material 35 is There is no gap between the substrates 41. Therefore, it is possible to prevent water from entering between the front base material 36 and the rear base material 41 and touching the main part 56 of the heater 55.

  When snow attached to the front surface of the emblem 30 is melted, it becomes water and flows down along the front surface. The same applies to the case where rain, muddy water or the like adheres to the front surface of the emblem 30. In this regard, in the present embodiment, both the electrode 61 and the thermistor 62 are arranged at a position higher than the irradiation area Z1 of the millimeter wave 26, and are kept away from the flowing water as described above. Therefore, compared to the case where the electrode 61 and the thermistor 62 are arranged at a position lower than the irradiation area Z1, it is possible to make the electrode 61 and the thermistor 62 less likely to touch water.

As a result, adverse effects caused by contact with water, for example, corrosion of the electrode 61 and the thermistor 62 can be suppressed.
When the heating element 57 is heated by energization, the temperature of the heating element 57 tends to be lower at the lower part of the heating element 57 and higher at the upper side.

  On the other hand, by controlling the energization of the heating element 57 by the electronic control device based on the detection value of the thermistor 62, the temperature of the heater section 55 is adjusted, and the deterioration of the decoration main body section 31 due to the heat of the heating element 57 is suppressed. You.

  In this regard, in the present embodiment, as described above, since the thermistor 62 is disposed at a position higher than the irradiation region Z1 of the millimeter wave 26, the temperature of the portion of the heating element 57 at which the temperature becomes higher becomes lower. It is detected by the thermistor 62. Therefore, compared with the case where the thermistor 62 is disposed at a position lower than the irradiation area Z1, the amount of electricity to the heating element 57 can be reduced, and the deterioration of the decoration main body 31 due to the heat of the heating element 57 can be effectively suppressed. Can be.

  -If the front end 30c of the emblem 30 (decorative main body 31) is located behind the front end 17a of the lower adherend 17, a part of the lower adherend 17 (curved portion 18) will be part of the decorative main body. It protrudes forward from the part 31. Therefore, when a part of the snow adhered to the front surface of the emblem 30 is melted by the heat of the heater 55, the unmelted part of the snow may accumulate on the protruding part of the lower covering part 17.

  In this regard, in this embodiment, as shown in FIG. 3, the front end 30 c of the emblem 30 (decoration main body 31) is located forward of the front end 17 a of the lower mounting portion 17, so that the lower The portion 17 (bending portion 18) does not protrude forward from the decoration main body portion 31. Therefore, when part of the snow attached to the front surface of the emblem 30 is melted by the heat of the heater 55, the unmelted part of the snow flows down without accumulating on the lower covering part 17.

  The above embodiment can be implemented as a modified example in which this is changed as follows. In this modification, the same elements as those described in the above embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  In the above embodiment, the recess filling portion 43 is formed by a part of the rear substrate 41, but as shown in FIG. It may be formed. In this case, the recess filling portion 43 may be formed by resin molding so that the recess 39 is filled after the front base material 36 is formed. In addition, a depression filling portion 43 having a shape to fill the depression 39 is prepared in advance as a separate member, and after the front base material 36 is formed, the depression filling portion 43 is attached to the depression 39 by heat welding, ultrasonic welding, or the like. They may be joined.

  In any of the above cases, the main portion 56 of the heater section 55 is adhered to the rear surface of the front substrate 36 in which the recess 39 is filled with the recess filling section 43. When the rear substrate 41 is formed, since the depression 39 is already buried, the through portion 64 connected to the depression 39 may be omitted as shown in FIG. The penetrating portion 64 not connected to the depression 39 may be omitted as well. Of course, the penetrating part 64 connected to the depression 39 and the penetrating part 64 not connected may be left without being omitted.

Also in this case, the rear substrate 41 is formed, so that the substrate 35 does not have a void portion in contact with the main portion 56 of the heater portion 55.
The emblem 30 may be attached to the front grill 11 having the lower attachment portion 17 shown in FIG. The lower covering portion 17 has an inclined surface 19 which becomes lower toward the front side. In this case, the emblem 30 (decoration main body 31) is attached to the adherend 13 with its front end 30c positioned above the inclined surface 19 of the lower adherend 17. The angle α formed by the inclined surface 19 with respect to the horizontal plane is set to a value larger than 0 ° and smaller than 90 °. The preferable range of the angle α is 10 to 20 °.

  In this way, when a part of the snow attached to the front surface of the emblem 30 is melted by the heat of the heater unit 55, the water generated by the melting and the part of the snow remaining undissolved on the inclined surface 19. Run down along. Therefore, it is possible to prevent snow from accumulating on the lower covering portion 17.

  In the millimeter wave attenuation suppression mode of the above (2), only one of the electrode 61 and the thermistor 62 may be incorporated into the heater section 55 at a position outside the irradiation area Z1 of the millimeter wave 26 in the heater section 55.

  As the millimeter-wave attenuation suppression mode of the above (2), on the condition that at least one of the electrode 61 and the thermistor 62 is located outside the irradiation area Z1 of the millimeter wave 26 in the heater section 55, It may be incorporated in the heater section 55 at the side or at a position lower than the irradiation area Z1.

  As the millimeter-wave attenuation suppression mode of (3), the linear portion 58 of the heating element 57 may be incorporated into the heater portion 55 in a state of being inclined differently from the state orthogonal to the polarization plane 27. Even in this case, the area where the millimeter wave 26 contacts the linear portion 58 is smaller than when the linear portion 58 is parallel to the polarization plane 27. The amount by which the transmission of the millimeter wave 26 is hindered by the linear portion 58 is reduced, and the effect of reducing the attenuation of the millimeter wave 26 can be obtained.

  -Unlike the above-described embodiment, the constituent members of the heater unit 55 are incorporated into the heater unit 55 in only one of the millimeter wave attenuation suppression modes (1) to (4). Alternatively, it may be incorporated in the heater section 55 in a millimeter wave attenuation suppression mode in which two or more are combined.

-The wiring pattern of the heating element 57 in the heater section 55 may be changed to a wiring pattern different from the above embodiment.
-Water repellency may be given to the front of the member located at the forefront of the emblem 30. In this case, the water adhering to the front surface of the member is repelled, and the member is hardly wetted, so that the formation of a water film on the front surface of the member during snow melting can be suppressed.

  As 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 grain may be formed on a molding surface of a mold used for molding the member, or nano-processing may be performed.

Further, as the water repellent film, a film having a hard coat function may be used.
-The metal layer 52 in the decoration layer 50 may be covered with a corrosion prevention layer made of an acrylic or urethane resin material in order to suppress corrosion.

-The connection part 45 may be omitted.
The millimeter wave 26 may be transmitted along the plane of polarization 27 parallel to the vertical plane as in the above embodiment, or may be transmitted along the plane of polarization 27 inclined with respect to the vertical plane. It may be.

-The decoration main body 31 may be formed in a plate shape having a shape different from an ellipse.
The means for attaching the emblem 30 to the attachment portion 13 of the front grill 11 is not particularly limited. The emblem 30 may be attached to the adherend 13 by, for example, a clip, a screw, a pawl engagement, or the like.

The emblem 30 may be attached to the vehicle body instead of the front grill 11.
The vehicle decorative component is attached to the front of the vehicle 10 in the direction of transmitting the millimeter wave from the millimeter wave radar device 25 to decorate the vehicle 10 and to have the millimeter wave transparency. Alternatively, the present invention may be applied to a decorative component for a vehicle different from the emblem 30.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 25 ... Millimeter wave radar apparatus, 26 ... Millimeter wave, 30 ... Emblem (decoration parts for vehicles), 31 ... Decoration body part, 32 ... Transparent member, 35 ... Base material, 36 ... Front base material, 37 ... General part, 38 convex part, 39 concave part, 41 back substrate, 44 coupling part, 50 decorative layer, 55 heater part, 56 main part, 57 heating element, 64 penetrating part, G1 ... voids.

Claims (3)

In a vehicle, a sheet-shaped vehicle that is attached to the front of the millimeter wave radar device in the transmission direction of millimeter waves to decorate the vehicle, has a decoration main body having millimeter wave transparency, and a heating element that generates heat when energized. And a heater section,
The decoration main body portion is a transparent member formed of a resin material, a base material formed of a resin material, and disposed on the rear side of the transparent member in the transmission direction, between the transparent member and the base material. With a decorative layer formed on the
The base material is divided into a front base material and a rear base material arranged on the rear side of the front base material in the transmission direction,
The main portion of the heater portion including the heating element is sandwiched by the front base material and the rear base material from front and rear in the transmission direction,
The front substrate and the rear substrate are joined to each other in a state where the main portion of the heater section is sealed,
The void portion in contact with the main portion in the base material is filled with the same resin material as the base material ,
The void portion is filled with a part of the base material or a member different from the base material,
The front base material includes a general portion and a convex portion protruding forward in the transmission direction from the general portion,
The decorative part for a vehicle , wherein the void portion has a void portion between a recess formed behind the convex portion on the rear surface of the front substrate in the transmission direction and the main portion . The heater portion is provided with a penetrating portion that penetrates the heater portion in the transmission direction at least at a location different from the heating element,
The rear substrate has a connecting portion that protrudes forward in the transmission direction and fills the penetrating portion,
The vehicle decorative component according to claim 1 , wherein the coupling portion is directly or indirectly joined to the front base member. In a vehicle, a sheet-shaped vehicle that is attached to the front of the millimeter wave radar device in the transmission direction of millimeter waves to decorate the vehicle, has a decoration main body having millimeter wave transparency, and a heating element that generates heat when energized. And a heater section,
A transparent member formed of a resin material, a base member formed of a resin material, and disposed on the rear side of the transparent member in the transmission direction, between the transparent member and the base material; With a decorative layer formed on the
A method for manufacturing a decorative component for a vehicle, in which the base material is divided into a front base material and a rear base material arranged on the rear side of the front base material in the transmission direction,
After forming the transparent member, the decorative layer, and the front base material in order, on the rear side of the front base material in the transmission direction, a main part including the heating element of the heater is arranged as an insert. By insert molding, the rear part of the front substrate is formed on the rear side, and the main part is joined to the rear side of the front substrate in a sealed state,
As the front base material, a general part, using a general part, including a convex portion protruding forward in the transmission direction than the general part,
As the heater, a heater provided with a penetrating portion penetrating the heater in the transmission direction at least at a location different from the heating element,
When insert molding the rear substrate, the heater so that a part of the penetrating portion of the main portion communicates with a recess formed on the rear side of the convex portion on the rear side of the front substrate. A method for manufacturing a decorative component for a vehicle , wherein a part is arranged on a rear side of the front base material, and a space between the recess and the main part is filled with a part of the rear base material .

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