JP6779713B2 - In-vehicle antenna device - Google Patents

Description

The present invention relates to an in-vehicle antenna device.

Conventionally, as in Patent Document 1, an in-vehicle antenna device having a light emitting function has been proposed.

Japanese Unexamined Patent Publication No. 2014-80094

However, since the light emitting body and the substrate on which the light emitting body is mounted are arranged on the peripheral edge of the lower end portion of the case, it is necessary to make the size one size larger than that of the in-vehicle antenna device having no light emitting function.

Therefore, an object of the present invention is to provide an in-vehicle antenna device having a light emitting function by effectively using the space in the device.

The in-vehicle antenna device according to the present invention has an antenna element, an antenna substrate that amplifies a signal obtained from the antenna element, an antenna base that is attached to the upper surface of a vehicle and has an antenna substrate attached, and a flat plate-shaped antenna. A light emitter substrate arranged in front of or behind the element in the x direction indicating the front-rear direction of the vehicle and mounting a light emitter and a circuit for driving the light emitter, and light emitted by the light emitter arranged in front of the element. A light guide plate that guides the light emitted by a light emitter arranged in the rear or rearward to the front, and an antenna element, an antenna board, a light emitter board, and a light guide plate that are attached to the antenna base with an opening on the lower surface. It is provided with an outer case that covers and has a first opening for transmitting light from the light guide plate to the outside, the illuminant is mounted on both sides of the illuminant substrate, and the mounting surface on which the circuit and the illuminant are mounted is in the x direction. The illuminant substrate is mounted upright on the antenna base so as to be perpendicular to the y direction indicating the vertical left-right direction.

Since the light emitting body substrate contains a metal plate-shaped member such as a copper foil, there is a possibility that the reception performance of the antenna element arranged nearby may be adversely affected.
However, since the light emitting body substrate is arranged in front of or behind the antenna element and is erected so that the mounting surface of the light emitting body substrate is perpendicular to the y direction, the mounting surface is perpendicular to the x direction. The reception performance of the antenna element is less likely to be adversely affected as compared with the form in which the antenna element is erected.
Therefore, the lighting device can be provided in the in-vehicle antenna device while maintaining the characteristics of the antenna element.

Further, since the light emitting body substrate is erected so that the mounting surface is perpendicular to the y direction, it is arranged so that the mounting surface is erected so as to be perpendicular to the x direction or perpendicular to the z direction. It is possible to provide the lighting device in the vehicle-mounted antenna device by effectively using the space in the vehicle-mounted antenna device without increasing the dimension in the y direction as compared with the above-described embodiment.

In particular, when the light emitter substrate is arranged in front of the antenna element or the antenna substrate, it is only for AM / FM reception in the rear region where the restrictions in the y and z directions are looser and the space is wider than in the front. Instead, the lighting device can be provided in the in-vehicle antenna device in a state where various antenna elements for GPS reception and other electronic devices such as a camera are arranged.
Further, illuminants are arranged on both sides of the illuminant substrate, the illuminant arranged on one surface is used for right light emission when viewed from the front, and the illuminant arranged on the other surface is viewed from the front. It can be used for the left light emission, and many light emitters (or large light emitters) can be mounted in a narrow space.

Further, it is possible to arrange many light emitting bodies without increasing the dimension in the y direction, and it is possible to brighten the light emitted to the outside.

Preferably, an inner case covering the light emitting body is further provided inside the outer case, the inner case has a second opening for transmitting light from the light emitting body, and the light emitting body has a second opening through the second opening. The light guide plate is arranged in a positional relationship in which light is emitted toward the outside in the direction, and the light guide plate has a positional relationship in which an incident portion having an incident surface facing the light emitting body and a part thereof face the first opening through the second opening. It has a reflecting portion that guides the light incident on the incident portion to the rear or front and reflects it outward.

More preferably, it extends in the z direction indicating the vertical direction perpendicular to the x direction and the y direction in the region of the reflecting portion on the side facing the interior case and overlapping the first opening when viewed from at least the y direction. A groove region in which a plurality of grooves are arranged in the x direction is provided, and at least a portion of the surface of the interior case facing the first opening is colored with a brightness of 5 or more in the Mansell display system.

Light that has passed through the reflective part of the light guide plate and reached the surface of the interior case can be reflected by the surface of the interior case, and it irradiates the outside compared to the form in which the surface of the interior case is not colored with high brightness. It becomes possible to brighten the light that is produced.

More preferably, the groove region has a first groove region and a second groove region that is farther from the incident portion than the first groove region, and the first groove region is adjacent in the x direction as the distance from the incident portion increases. Grooves are formed so that the intervals between the grooves are narrowed and the depth is increased, and the intervals between the adjacent grooves in the x direction are constant, narrower than the intervals in the first groove region, and incident. Grooves are formed so that the depth increases as the distance from the portion increases and becomes larger than the depth of the groove in the first groove region, and each of the grooves provided in the first groove region and the second groove region is close to the incident portion. The side inclination is formed so as to be gentler than the inclination on the side far from the incident portion.

It is possible to make the light emitted from the light guide plate to the outside in the y direction and the like have uniform brightness in the x direction.

Further, preferably, the interior case has an antenna element built-in, and the interior case and the antenna base are sealed by an interior pad made of an annular elastic member, and the second opening is an incident portion and an incident portion. It is sealed with an O-ring attached to the part.

The exterior case can be replaced with a different design and used, increasing the degree of freedom in exterior design design.
Further, if the shape of the first opening is changed, the shape of the shining region via the light guide plate or the diffusion plate is changed, so that the appearance impression can be greatly changed.

More preferably, a diffusion plate is provided between the outer case and the light guide plate, and the region inside the peripheral edge of the diffusion plate, which overlaps with the first opening when viewed from at least in the y direction, is textured or dimple-processed. Is given.

By combining the light guide plate and the diffuser plate, it becomes possible to efficiently perform light guide / diffusion so that the light of the light emitting body is emitted toward the outside of the in-vehicle antenna device.

More preferably, one of the interior case and the diffuser plate is provided with two or more bosses for positioning, and the diffuser plate is a portion of the light guide plate outside the interior case by using two or more bosses and an adhesive member. It is attached to the inner case so as to cover the inside case, and the diffuser plate and the inner case are sealed with an adhesive member.

A second opening is provided on the side surface of the inner case in order to irradiate the light from the light emitting body in the inner case to the outside, and the second opening is sealed by the incident portion of the light guide plate to which the O-ring is attached, and further. The light guide plate attached to the side surface of the interior case is sealed by the diffusion plate and the adhesive member.
Therefore, the second opening can be reliably waterproofed, and even if water or the like enters the inside from the outer case, it can be prevented from entering the inside of the inner case.
Further, the diffuser plate and the adhesive member cover the portion of the light guide plate outside the inner case to prevent water from entering between the inner case and the diffuser plate, so that the light guide plate can be protected.

Also, preferably, the outer case is attached to the antenna base so that the diffuser comes into contact with the first opening of the outer case.

Even if the first opening is not provided with a translucent window portion, it is possible to prevent water or the like from entering the inside through the first opening.

Further, preferably, it is composed of an annular elastic member, is attached to the lower end peripheral portion of the outer case, further includes an outer pad arranged between the outer case and the vehicle, and is the lower end of the outer pad in the x direction. A drainage notch is provided behind the.

Even if water enters the inside through the first opening or the like, it can be discharged to the outside through the drainage notch.
In particular, since the roof of the vehicle to which the in-vehicle antenna device 1 is attached is inclined so as to be low in the rear, it is easy to be discharged through the drainage notch installed in the rear due to gravity.
Further, since it is not necessary to provide a window portion in the first opening, there is an advantage that the outer case can be formed of a single non-translucent material.

As described above, according to the present invention, it is possible to provide an in-vehicle antenna device having a light emitting function by effectively using the space in the device.

It is a perspective view showing a state before each part of the vehicle-mounted antenna device in the present embodiment is assembled, and is viewed from above. It is a perspective view showing the state before the antenna element is attached to the inner case and is viewed from above. It is a perspective view showing the state before the antenna element is attached to the inner case and is viewed from below. It is a perspective view which shows the state before the O-ring is attached to a light guide plate. It is a figure which shows the xy cross section of the 1st groove region. It is a figure which shows the xy cross section of the 2nd groove region. It is a perspective view showing a state before the light guide plate is attached to the inner case and is viewed from above. It is a perspective view showing a state after the light guide plate is attached to the inner case and is viewed from above. It is a perspective view showing the state before the inner case is screwed to the antenna base and is viewed from above. It is a perspective view which shows the state before the adhesive member is attached to a diffuser plate. It is a perspective view showing the state before the diffuser plate is attached to the inner case and is viewed from above. It is a perspective view showing the state before the outer case is attached to the antenna base and is viewed from above. It is a perspective view showing the state before the exterior pad is attached to the exterior case and is viewed from above. It is a perspective view showing the state before the exterior pad is attached to the exterior case and is viewed from below. It is a perspective view of the in-vehicle antenna device and is viewed from above. It is a side view of the in-vehicle antenna device. 16 is a cross-sectional view taken along the line AA of FIG. 16 is a cross-sectional view taken along the line BB of FIG.

Hereinafter, this embodiment will be described with reference to the drawings. The vehicle-mounted antenna device 1 in the present embodiment is attached to the upper surface of a vehicle such as a roof, and includes a case 10, a light guide unit 30, a sealing member 50, an antenna unit 70, and a light emitting unit 90 (see FIGS. 1 to 18).

In order to explain the directions, the front-rear direction of the vehicle to which the vehicle-mounted antenna device 1 is mounted is defined as the x direction, the left-right direction perpendicular to the x direction is defined as the y direction, and the substantially vertical direction perpendicular to the x direction and the y direction is defined as the z direction. ..

The case 10 is a member that covers members constituting the vehicle-mounted antenna device 1 such as an antenna element 71, and has an exterior case 11, an exterior pad 13, an interior case 15, an antenna base 17, and an interior pad 19.
The light guide unit 30 is a member that guides the light of the light emitter 91 provided inside the interior case 15 between the exterior case 11 and the interior case 15 and irradiates the light from the first opening 11a of the exterior case 11 to the outside. It has a light guide plate 31 and a diffusion plate 33.
The sealing member 50 is a member that seals the side surface of the interior case 15, and has an O-ring 51 and an adhesive member 53.
The antenna unit 70 has an antenna element 71 and an antenna substrate 73.
The light emitting unit 90 has a light emitting body 91 and a light emitting body substrate 93.

The outer case 11 is made of a synthetic resin having non-translucency and radio wave transmission (a resin molded product formed of a synthetic resin containing polycarbonate (Polycarbonate) and ASA (Acrylate Styrene Acrylonitrile)). It has a shark fin shape that is inclined so that it is lower than the rear and both sides are curved inward.

The outer case 11 is a member having an open lower surface and constituting the in-vehicle antenna device 1, other than the outer case 11 (exterior pad 13, interior case 15, antenna base 17, interior pad 19, light guide plate 31, diffusion). The plate 33, the O-ring 51, the adhesive member 53, the antenna element 71, the antenna substrate 73, the illuminant 91, and the illuminant substrate 93) are covered from above in the z direction (see FIG. 2).

The side portion of the outer case 11 is provided with an opening (first opening 11a) for transmitting light from the inside to the outside.

A first window portion (not shown) made of a synthetic resin having translucency and radio wave transmission may be attached to the first opening 11a for the purpose of waterproofing or the like. Then, the diffuser plate 33 is attached to the inner case 15 so as to come into contact with the first opening 11a, and the water that has entered through the first opening 11a is discharged through the drainage notch 13a provided in the outer pad 13. Therefore, it may be in a form in which the first window portion is not provided. Hereinafter, the form in which the first window portion is not attached to the first opening 11a will be described.

The outer case 11 is provided with a first locking claw 11b for attaching to the antenna base 17 so as to project downward from the inner wall in the z direction, and when the antenna base 17 is fixed to the outer case 11, the first lock claw 11b is provided. The locking claw 11b engages with the second locking claw 17a provided on the antenna base 17 (see FIGS. 14 and 17).

The exterior pad 13 is an annular elastic member made of elastomer, rubber, or the like, and is fitted into the lower end peripheral edge of the outer case 11 to blindfold the gap between the lower end peripheral edge of the outer case 11 and the vehicle. Functions as.
A drainage notch 13a is provided at the lower end of the exterior pad 13 at the rear end in the x direction as a drainage port for water that has entered between the exterior case 11 and the interior case 15 (see FIG. 14).

The interior case 15 is made of a synthetic resin having non-translucency and radio wave transmission (a resin molded product formed of a synthetic resin containing polycarbonate (Polycarbonate) and ASA (Acrylate Styrene Acrylonitrile)).
The inner case 15 is a member having an open lower surface and constituting the in-vehicle antenna device 1, other than the outer case 11, the outer pad 13, the inner case 15, the light guide plate 31, the diffuser plate 33, the O ring 51, and the adhesive member 53. (Antenna base 17, antenna element 71, antenna substrate 73, illuminant 91, illuminant substrate 93) are covered from above in the z direction.

On the side of the interior case 15, an opening (second opening 15a) for transmitting light from the light emitting body 91 provided inside and a protrusion 31c of the light guide plate 31 are locked outward in the y direction. The protruding substantially U-shaped protrusion receiving portion 15b, the first positioning boss 15c into which the first positioning hole 31d of the light guide plate 31 is inserted, the second positioning hole 33a of the diffusion plate 33, and the positioning notch 33b are inserted. A second positioning boss 15d is provided (see FIGS. 2 and 3).
The positioning bosses (first positioning boss 15c and second positioning boss 15d) may be provided on the inner case 15, but may also be provided on the light guide plate 31 or the diffusion plate 33. ..
Further, it is desirable that two or more second positioning bosses 15d for positioning the diffusion plate 33 are provided.

A second window portion (not shown) made of a synthetic resin having translucency and radio wave transmission may be attached to the second opening 15a for the purpose of waterproofing or the like. Then, since the incident portion 31a of the light guide plate 31 to which the O-ring 51 is attached closes the second opening 15a, the second window portion may not be provided. Hereinafter, the form in which the second window portion is not attached to the second opening 15a will be described.

When the outer case 11 and the inner case 15 are attached to the antenna base 17, at least the portion of the surface of the inner case 15 facing the first opening 11a of the outer case 11 is a color having a brightness of 5 or more in the Munsell display system (for example,). , White, gray, or cream).
In this embodiment, an example in which the entire interior case 15 is white is shown.
At the lower end of the inner case 15, a screw hole 15e used for screwing to the antenna base 17 is provided.

The antenna base 17 is a metal base such as aluminum, a resin base such as Polybutylene Terephthalate, or a combination (composite) thereof.
The antenna base 17 has a second locking claw 17a on the outer peripheral portion that engages with the first locking claw 11b of the outer case 11 to lock the outer case 11 (see FIG. 9).

An antenna substrate 73 and a light emitter substrate 93 are attached to the upper surface of the antenna base 17.
The antenna board 73 is arranged so that the mounting surface of the amplifier or the like faces in the vertical direction (perpendicular to the z direction).
The illuminant substrate 93 is in front of or behind the antenna element 71 and the antenna substrate 73, and the projection surface of the illuminant 91 and the mounting surface of the circuit for driving the illuminant 91 face in the left-right direction (relative to the y direction). The light emitters 91 are mounted on both the left and right sides so as to be vertical). In this embodiment, the light emitting body substrate 93 is arranged in front of the antenna element 71 and the antenna substrate 73.

The mounting position of the illuminant 91 on the illuminant substrate 93 and the illuminant substrate so that the illuminant 91 faces the second opening 15a of the interior case 15 when the antenna base 17 is attached to the interior case 15. The position where the 93 is attached to the antenna base 17 is determined.
A recess (screw receiver 17b) used for screwing to the interior case 15 is provided on the peripheral edge of the antenna base 17.

The interior pad 19 is attached to the peripheral edge of the upper surface of the antenna base 17 and inside the screw receiver 17b.

The cable 17c connected to the antenna substrate 73 and the illuminant substrate 93 extends downward in the z direction of the antenna base 17 through an opening (not shown) provided in the antenna base 17 (FIGS. 14, 16, 16 and 17). reference).
The in-vehicle antenna device 1 is fixed to the upper surface of the vehicle by screwing the vehicle body mounting screw 17d onto the antenna base 17.
A seal member 17e, which is an annular elastic member made of elastomer, rubber, or the like, is provided on the lower surface of the antenna base 17, and the seal member 17e seals the space between the antenna base 17 and the vehicle in a watertight manner. ..

The interior pad 19 is an annular elastic member made of elastomer, rubber, or the like, and is provided on the upper surface of the antenna base 17 (see FIGS. 9, 17, and 18).
When the interior case 15 and the antenna base 17 are fixed by screwing, the interior pad 19 is pressed by the lower end of the interior case 15 and the upper surface of the antenna base 17 to seal between the interior case 15 and the antenna base 17. ..
The antenna substrate 73 and the illuminant substrate 93 are arranged inside the region of the antenna base 17 to which the interior pad 19 is attached.

The light guide plate 31 is made of a synthetic resin (resin molded product such as Polycarbonate) having translucency, high refractive index, and radio wave transmission.
The light guide plate 31 is composed of an incident portion 31a having an incident surface 31a1 facing the light emitting body 91 and a reflecting portion 31b, and is attached between the outer case 11 and the inner case 15 (see FIGS. 4 to 8).

The incident portion 31a and the reflecting portion 31b are in a substantially orthogonal positional relationship, and the light guide plate 31 has a substantially L-shaped cross section in xy.
The reflecting unit 31b guides the light emitted in the left (right) direction by the light emitting body 91 arranged in the front to the rear (or the light emitted in the left (right) direction by the light emitting body 91 arranged in the rear). Is guided forward), and a part of the light is in a positional relationship facing the first opening 11a, and the guided light is reflected outward in the y direction or the like.

Projections 31c are provided on the incident portion 31a and the reflecting portion 31b.
When the light guide plate 31 is attached to the interior case 15, the protrusion 31c of the incident portion 31a engages with the second opening 15a of the interior case 15, and the protrusion 31c of the reflection portion 31b is with the protrusion receiving portion 15b of the interior case 15. Engage.

A first positioning hole 31d is provided in the vicinity of the end of the reflecting portion 31b on the side away from the incident portion 31a, and is used for positioning when the light guide plate 31 is attached to the interior case 15.

When the reflective portion 31b is attached to the interior case 15, the xy cross section is substantially V-shaped or in a region on the side (inner side surface) facing the interior case 15 that overlaps with the first opening 11a at least when viewed from the y direction. A groove region 31e is provided in which a plurality of grooves (diffuse reflection patterns) that are substantially U-shaped and extend in the z direction are arranged in the x direction.
The groove region 31e has a first groove region 31e1 and a second groove region 31e2 that is farther from the incident portion 31a than the first groove region 31e1.

In the first groove region 31e1, as the distance from the incident portion 31a increases, the distance between adjacent grooves (S ₁₁ , S ₁₂ ...) In the x direction becomes narrower, and the groove depths (d ₁₁ , d ₁₂ ...) ) Is formed so that (S ₁₁ > S ₁₂ > S ₁₃ > S ₁₄ > S ₁₅ , d ₁₁ <d ₁₂ <d ₁₃ <d ₁₄ <d ₁₅ , see FIG. 5).

In the second groove region 31e2, the spacing between the grooves adjacent in the x direction (S ₂₁ , S ₂₂ ...) Is constant and narrower than the spacing in the first groove region 31e1, and the depth of the groove increases as the distance from the incident portion 31a increases. A groove is formed so that (d ₂₁ , d ₂₂ ...) becomes larger and becomes larger than the depth of the groove in the first groove region 31e1 (S ₁₅ > S ₂₁ = S ₂₂ = S ₂₃ = S ₂₄ = S. ₂₅ = S ₂₆ , d ₁₅ <d ₂₁ <d ₂₂ <d ₂₃ <d ₂₄ <d ₂₅ <d ₂₆ , see FIG. 6).

Each of the grooves provided in the first groove region 31e1 and the second groove region 31e2 is formed so that the inclination on the side closer to the incident portion 31a is gentler than the inclination on the side far from the incident portion 31a.

The first positioning boss 15c is inserted into the first positioning hole 31d, the incident portion 31a is inserted into the second opening 15a via the O-ring 51, and the protrusion 31c of the incident portion 31a engages with the second opening 15a to reflect. The light guide plate 31 is attached to the inner case 15 by engaging the protrusion 31c of the portion 31b with the protrusion receiving portion 15b.

The space between the incident portion 31a and the second opening 15a is sealed by an O-ring 51.

The diffuser plate 33 is made of a synthetic resin (resin molded product such as polycarbonate) having translucency, high refractive index, and radio wave transmission, and a portion of the light guide plate 31 outside the interior case 15 is formed. It is attached between the outer case 11 and the inner case 15 so as to cover from the outside in the y direction (see FIGS. 10 to 12).

A second positioning hole 33a and a positioning notch 33b are provided on the peripheral edge of the diffusion plate 33, and are used for positioning when the diffusion plate 33 is attached to the inner case 15.

Inside the peripheral edge of the diffuser plate 33, when the diffuser plate 33 is attached to the inner case 15 and the outer case 11 and the inner case 15 are attached to the antenna base 17, at least the first opening when viewed from the y direction. The region overlapping with 11a (central region 33c) is textured or dimpled in order to enhance the diffusion and transmission of the light emitted from the reflecting portion 31b.

Further, when the diffuser plate 33 is attached to the inner case 15 and the outer case 11 and the inner case 15 are attached to the antenna base 17, grain processing is performed so that a gap is not formed between the outer case 11 and the diffuser plate 33. And dimple processing are preferably performed on the inner surface side of the diffusion plate 33 facing the light guide plate 31 in the central region 33c.

An annular shape such as double-sided tape is formed on the peripheral portion of the diffusion plate 33, which is inside the second positioning hole 33a and the positioning notch 33b and faces the interior case 15 when attached to the interior case 15. A sticking area 33d to which the adhesive member 53 is stuck is provided.
The diffusion plate 33 is attached to the side surface of the interior case 15 via an adhesive member 53 so as to cover a portion of the light guide plate 31 that is outside the interior case 15.
The diffusion plate 33 and the interior case 15 are brought into close contact with each other by the adhesive member 53, and the second opening 15a of the interior case 15 is doubly sealed by the O-ring 51 and the adhesive member 53.

When the inner case 15 is attached to the outer case 11, the outer surface of the central region 33c of the diffuser plate 33 faces the first opening 11a of the outer case 11, and the peripheral edge of the first opening 11a is the central region of the diffuser plate 33. The shapes of the light guide plate 31, the diffusion plate 33, the outer case 11, the inner case 15, and the like are determined so as to be in contact with the outer surface of the 33c.

When the light emitting body substrate 93 is arranged in front, the light emitted from the light emitting body 91 toward the outside in the y direction enters the incident portion 31a from the incident surface 31a1 in front of the vehicle-mounted antenna device 1, and has a substantially L shape. It is guided to the rear reflecting portion 31b at the shape portion, reflected at the groove region 31e in the reflecting portion 31b, and irradiated outward (primary diffusion).
When the light emitter substrate 93 is arranged rearward, the light emitted from the light emitter 91 toward the outside in the y direction enters the incident portion 31a from the incident surface 31a1 and is guided forward in the rear of the vehicle-mounted antenna device 1. Then, it is reflected in the groove region 31e in the reflecting portion 31b and irradiated outward.

A part of the light passing through the reflecting portion 31b passes through the groove region 31e and reaches the surface of the interior case 15, but is reflected by the outer wall of the interior case 15 having high brightness and is irradiated outward.
The light emitted outward from the reflecting portion 31b is diffused by dimples or the like in the central region 33c of the diffusion plate 33 and is emitted outward from the first opening 11a of the outer case 11 (secondary diffusion).

The antenna element 71 has an upper element 71a and a lower element (wavelength shortening element) 71b, and is attached to the upper inside of the inner case 15 via an engaging claw (not shown).
The upper element 71a has a portion formed in a planar shape or a meander shape by processing a metal plate (conductor plate) such as stainless steel.
The yz cross section of the upper element 71a has a substantially U-shaped or substantially V-shaped shape.
The lower element 71b has a coil shape and is electrically connected to the upper element 71a via the upper 71b1 of the lower element 71b.
When the interior case 15 is attached to the antenna base 17, the lower terminal 71b2 of the lower element 71b is sandwiched between the conductor leaf spring 73a of the antenna substrate 73 to which the antenna element 71 is attached and the interior case 15 attached to the antenna base 17. As a result, the antenna element 71 and the antenna substrate 73 are brought into a state where they can be electrically connected.

The antenna element 71 is not limited to a form composed of an upper element 71a and a lower element 71b for receiving AM / FM broadcasting, and may be a form composed of a flat antenna for GPS reception or the like.
In this case, the antenna element 71 may be attached to the antenna base 17 or the antenna substrate 73 in addition to the form attached to the inside of the inner case 15.

The light emitting body 91 has a light emitting element such as an LED, and is mounted on the light emitting body substrate 93 so as to emit light toward the outside in the y direction.
The illuminant substrate 93 is a double-sided substrate on which the illuminant 91 and the circuit for driving the illuminant 91 are mounted, and at least the illuminant 91 is mounted on both surfaces.

Next, the procedure for assembling the in-vehicle antenna device 1 will be described.
The antenna substrate 73 and the illuminant substrate 93 are attached to the antenna base 17 in advance.
The antenna element 71 is attached to the inside of the inner case 15 (see steps 1, 2, and 3).
The light guide plate 31 is attached to the outside of the inner case 15 (see steps 2, 7, and 8).
The interior case 15 including the antenna element 71 is attached to the antenna base 17 so that the antenna element 71 and the antenna substrate 73 can be electrically connected to each other (see steps 3 and 9).
The diffuser plate 33 is attached to the outside of the inner case 15 (see steps 4 and 11).
In addition, the procedure 3 may be a form performed before the procedure 2 or a form performed after the procedure 4.
The outer case 11 is attached to the antenna base 17 (see steps 5 and 12).
The exterior pad 13 is attached to the exterior case 11, and the in-vehicle antenna device 1 is assembled (see procedure 6, FIGS. 13 to 16).
The assembled in-vehicle antenna device 1 is attached to the vehicle.

Since the light emitter substrate 93 contains a metal plate-like member such as a copper foil, the reception performance of the antenna element 71 arranged nearby is adversely affected (the reception performance on the side where the light emitter substrate 93 is located is deteriorated). May cause).
However, in the present embodiment, the illuminant substrate 93 is arranged in front of or behind the antenna element 71 and the antenna substrate 73, and is erected so that the mounting surface of the illuminant substrate 93 is perpendicular to the y direction. Therefore, the reception performance of the antenna element 71 is less likely to be adversely affected as compared with a form in which the mounting surface is erected so as to be perpendicular to the x direction.
Therefore, the lighting device can be provided in the in-vehicle antenna device 1 while maintaining the characteristics of the antenna element 71.

Further, since the light emitting body substrate 93 is erected so that the mounting surface is perpendicular to the y direction, the mounting surface is erected so as to be perpendicular to the x direction or perpendicular to the z direction. The lighting device can be provided in the vehicle-mounted antenna device 1 by effectively using the space in the vehicle-mounted antenna device 1 without increasing the dimension in the y direction as compared with the arranged form.

In particular, when the light emitter substrate 93 is arranged in front of the antenna element 71 and the antenna substrate 73, the AM / FM is located in the rear region where the restrictions in the y and z directions are less relaxed and the space is wider than in the front. It is possible to provide the in-vehicle antenna device 1 with various antenna elements for receiving GPS as well as for receiving, and other electronic devices such as a camera.
Further, the illuminant 91 is arranged on both sides of the illuminant substrate 93, the illuminant 91 arranged on one surface is used for light emission on the right side when viewed from the front, and the illuminant 91 arranged on the other surface is used. It can be used for light emission on the left when viewed from the front, and many light emitters 91 (or large light emitters 91) can be mounted in a narrow space.

In a form in which the illuminant 91 is mounted on the illuminant substrate 93 so as to emit light toward the rear (or toward the front) in the x direction, when the number of the illuminants 91 is increased in order to increase the brightness, the light is emitted. The bodies 91 will be arranged in the z direction, the y direction, or both, which may increase the size of the light emitter substrate 93 to be mounted in the y direction.
However, the dimensions of the interior case 15 and the exterior case 11 in the y direction are often narrower than those in the x and z directions, and it is not easy to arrange many light emitters 91 in the y direction.

On the other hand, in the present embodiment, the light emitting body 91 is mounted on the light emitting body substrate 93 so as to emit light toward the outside in the y direction, the incident surface 31a1 is arranged at a position facing the light emitting body 91, and the xy cross section. Is substantially L-shaped, and a light guide plate 31 that guides light to the rear by using reflection is used to emit light in a plane behind the light emitter 91.
Alternatively, the light emitting body 91 is mounted on the light emitting body substrate 93 so as to emit light toward the outside in the y direction, the incident surface 31a1 is arranged at a position facing the light emitting body 91, and the xy cross section is substantially L-shaped. A light guide plate 31 that guides light forward using reflection is used to emit light in a plane in front of the light emitter 91.
Therefore, when increasing the number of light emitting bodies 91 in order to increase the brightness, the light emitting bodies 91 are arranged in the z direction, the x direction, or both, but the dimension in the y direction of the light emitting body substrate 93 to be mounted by this is Will not Increase.
Therefore, in the present embodiment, it is possible to arrange more illuminants 91 as compared with the embodiment mounted on the illuminant substrate 93 so that the illuminant 91 emits light toward the rear side in the x direction. It is possible to brighten the light emitted to the outside.

Further, at least a portion of the surface of the interior case 15 facing the first opening 11a of the exterior case 11 is colored with a high brightness (for example, a color having a brightness of 5 or more in the Munsell display system such as white).
Therefore, the light that has passed through the reflecting portion 31b of the light guide plate 31 and reached the surface of the interior case 15 can be reflected by the surface of the interior case 15, and the surface of the interior case 15 is not colored with high brightness. Compared to the form, it is possible to brighten the light emitted to the outside.

Further, the light guide plate 31 for primary diffusing the light from the light emitting body 91 has a groove region 31e having a substantially V-shaped or substantially U-shaped xy cross section and a plurality of grooves extending in the z direction arranged in the x direction.
In the first groove region 31e1 close to the incident portion 31a, grooves are formed so that the distance S between adjacent grooves in the x direction becomes narrower and the groove depth d becomes larger as the distance from the incident portion 31a increases.
In the second groove region 31e2 away from the incident portion 31a, the distance S between adjacent grooves in the x direction is constant and narrower than the distance in the first groove region 31e1, and the groove depth d increases as the distance from the incident portion 31a increases. A groove is formed so as to be larger than the groove depth d in the first groove region 31e1.
Each of the grooves provided in the first groove region 31e1 and the second groove region 31e2 is formed so that the inclination on the side closer to the incident portion 31a is gentler than the inclination on the side far from the incident portion 31a.
By making the groove shape of the light guide plate 31 the above-described configuration, it is possible to make the light emitted from the light guide plate 31 to the outside in the y direction and the like have uniform brightness.

Further, a member for ensuring the antenna function such as an antenna element 71 and an electric member necessary for light emission such as a light emitter 91 are housed inside the interior case 15, and a light guide plate 31 is placed outside the interior case 15. A diffuser plate 33 is attached, and an outer case 11 covers them.
Therefore, the exterior case 11 and the exterior pad 13 can be replaced with different designs without changing the members other than the exterior case 11 and the exterior pad 13, and the degree of freedom in the exterior design design can be increased. become.
Further, if the shape of the first opening 11a is changed, the shape of the shining region via the light guide plate 31 and the diffusion plate 33 is changed, so that the appearance can be greatly changed.

Further, in the region (central region 33c) that overlaps with the first opening 11a at least when viewed from the y direction, inside the peripheral edge portion of the diffuser plate 33 that further diffuses the light primary diffused by the light guide plate 31. Processing and dimple processing are applied.
By combining the light guide plate 31 and the diffuser plate 33 including these configurations, it is possible to efficiently perform light guide / diffusion so that the light of the light emitting body 91 is emitted toward the outside of the in-vehicle antenna device 1.

Further, in order to irradiate the outside with the light from the light emitting body 91 in the interior case 15, a second opening 15a is provided on the side surface of the interior case 15, and the second opening 15a is a light guide plate to which the O-ring 51 is attached. The light guide plate 31 attached to the side surface of the interior case 15 is sealed by the incident portion 31a of the 31, and is further sealed by the diffusion plate 33 and the adhesive member 53.
Therefore, the second opening 15a can be reliably waterproofed, and even if water or the like enters the inside from the exterior case 11, it can be prevented from entering the inside of the interior case 15.
Further, the diffuser plate 33 and the adhesive member 53 cover the portion of the light guide plate 31 outside the interior case 15 to prevent water from entering between the interior case 15 and the diffuser plate 33, thereby preventing the light guide plate 31 from entering. It will also be possible to protect.

Further, since the outer case 11 is attached to the antenna base 17 so that the diffuser plate 33 comes into contact with the first opening 11a of the outer case 11, the first opening 11a does not need to be provided with a translucent window portion. It is possible to prevent water or the like from entering the inside through the opening 11a.

Further, in a normal in-vehicle antenna device, a waterproof structure that makes it difficult for water to enter the inside is considered, but in many cases, a structure that discharges the water that has entered the inside is not considered.
On the other hand, in the present embodiment, since the drainage notch 13a is provided at the rear end of the exterior pad 13 attached to the lower end of the exterior case 11, it is assumed that water has entered the inside through the first opening 11a or the like. However, it can be discharged to the outside through the drainage notch 13a.
In particular, since the roof of the vehicle to which the in-vehicle antenna device 1 is attached is inclined so as to be lowered in the rear, it is easy to be discharged through the drainage notch 13a installed in the rear due to gravity.
Further, since it is not necessary to provide a window portion in the first opening 11a, there is an advantage that the outer case 11 can be formed of a single non-translucent material.

The merit of providing the drainage notch 13a is not limited to the form in which light from the inside is transmitted through the first opening 11a provided in the outer case 11.
For example, an in-vehicle antenna device 1 may be provided with a light receiving device (not shown) such as a camera, light from the outside is transmitted through the first opening 11a, and the light transmitted by the light receiving device is received (photographed). Be done. The first opening 11a may be provided not only on the side surface of the exterior case 11 but also on the front surface, the back surface, and the upper surface.
In this case, it is conceivable that a part of the cover such as the light receiving device and the lens covering the front surface thereof comes into contact with the first opening 11a to prevent water from entering, but water enters the inside from the first opening 11a or the like. Even if it does, it can be discharged to the outside through the drainage notch 13a.

1 In-vehicle antenna device 10 Case 11 Exterior case 11a First opening (side opening)
11b 1st locking claw 13 Exterior pad 13a Drainage notch 15 Interior case 15a 2nd opening (recessed opening)
15b Protrusion receiving part 15c 1st positioning boss 15d 2nd positioning boss 15e Screw hole 17 Antenna base 17a 2nd locking claw 17b Screw receiving 17c Cable 17d Body mounting screw 17e Seal member 19 Interior pad 30 Light guide part 31 Light guide plate 31a Incident part 31a1 Incident surface 31b Reflection part 31c Projection 31d 1st positioning hole 31e Groove area 31e1 1st groove area 31e2 2nd groove area 33 Diffuse plate 33a 2nd positioning hole 33b Positioning notch 33c Central area 33d Sticking area 50 Sealing member 51 O-ring 53 Adhesive member 70 Antenna part 71 Antenna element 71a Upper element 71b Lower element 71b1 Upper 71b2 Lower terminal 73 Antenna board 73a Conductor leaf spring 90 Light emitting part 91 Light emitting body 93 Light emitting body board

Claims (11)

Antenna element and
An antenna substrate that amplifies the signal obtained from the antenna element, and
And the antenna base before Symbol antenna substrate is attached,
A flat plate-like, and the light emitter substrate for mounting a light emission body,
Attached to the front Symbol antenna base, the antenna element and covers said antenna substrate and the light-emitting substrate, and an outer case having a first opening for transmitting light from the light emitter to the outside,
The illuminant is mounted on both sides of the illuminant substrate.
The light-emitting substrate-vehicle antenna apparatus mounting surface for mounting the light emitters and said Rukoto disposed so as to face the left right direction. Further comprising an inner instrumentation case to the inside of the outer casing,
Before SL emitters, vehicle-mounted antenna device according to claim 1, characterized in that it is arranged in a positional relationship that emits light toward the outer side. The vehicle-mounted antenna device according to claim 1 or 2, further comprising a light guide plate for guiding light emitted by the light emitter. The light guide plate has a positional relationship with an incident portion having an incident surface facing the light emitting body, and a part thereof faces the first opening, and guides the light incident on the incident portion and reflects it outward. The vehicle-mounted antenna device according to claim 3, further comprising a reflecting portion for causing the antenna. Wherein the region overlapping with the first opening when viewed from the lateral direction even without least that put the reflective portion, the vehicle-mounted antenna device according to claim 4, characterized in that groove areas arranged several are found provided .. The groove region has a first groove region and a second groove region that is farther from the incident portion than the first groove region.
Wherein the first groove region, farther from the incident portion, the interval of the adjacent contact groove is narrowed, it said groove so and depth increases formed,
It said second trench region, the spacing of adjacent contact groove is narrower than the interval in said first trench region at a constant, than and depth of the grooves in the as the depth away from the incident portion increases the first groove region The groove is formed so as to be large,
Each of the first groove region and the groove provided in the second groove region is formed so that the inclination on the side near the incident portion is gentler than the inclination on the side far from the incident portion. The vehicle-mounted antenna device according to claim 5 . The interior case contains the antenna element and has a built-in antenna element.
The interior case and the antenna base are sealed by an interior pad made of an annular elastic member.
The interior case has a second opening and
The vehicle-mounted antenna device according to claim 2, wherein the second opening is sealed by the incident portion and an O-ring attached to the incident portion. A diffusion plate is provided between the outer case and the light guide plate.
The vehicle-mounted vehicle according to claim 3 , wherein a region that is inside the peripheral edge of the diffusion plate and that overlaps with the first opening at least when viewed from the left-right direction is subjected to grain processing or dimple processing. Antenna device. Further provided with a light guide plate for guiding the light emitted by the light emitter,
A diffuser plate is provided between the outer case and the light guide plate.
The area inside the peripheral edge of the diffusion plate, which overlaps with the first opening when viewed from the left-right direction at least, is textured or dimple-processed.
Before SL diffuser, as before covering at least a portion of Kishirubekoban, attached to the interior casing,
Between the interior casing and the diffuser board antenna device according to claim 2, characterized in that it is tightly closed. Vehicle antenna apparatus according to claim 8 wherein the diffusion plate is characterized by a Turkey be in contact with the first opening of the outer case. Attached to the lower peripheral edge of the front Kigaiso case, further comprising an outer pad disposed between said outer casing and vehicles,
Wherein the lower end of the exterior pad, vehicle-mounted antenna device according to claim 1, characterized in that provided drainage notch.

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