WO2018043011A1

WO2018043011A1 - Vehicle-mounted antenna device

Info

Publication number: WO2018043011A1
Application number: PCT/JP2017/027976
Authority: WO
Inventors: 岳志廣澤; 藤井　俊彦; 優清水
Original assignee: 株式会社ヨコオ
Priority date: 2016-08-31
Filing date: 2017-08-02
Publication date: 2018-03-08
Also published as: JP6779713B2; JP2018037914A

Abstract

Provided is a vehicle-mounted antenna device which has a light-emitting function and which effectively uses the space inside the device. This vehicle-mounted antenna device is provided with: an antenna element; an antenna board which amplifies a signal obtained from the antenna element; an antenna base which is attached to an upper surface of a vehicle and to which the antenna board is attached; a light-emitting body board which is in the shape of a flat plate, is disposed forward of the antenna element, and has mounted thereon light-emitting bodies and a circuit for driving the light-emitting bodies; a light-guiding plate which guides, toward the rear, light emitted by the light-emitting bodies disposed to the front; and an outer case which has an opening in a lower surface, is attached to the antenna base, covers the antenna element, the antenna board, the light-emitting body board and the light-guiding plate, and has a first opening which allows light from the light-guiding plate to be transmitted to the outside. The light-emitting bodies are mounted on both surfaces of the light-emitting body board, and the light-emitting body board is attached to the antenna base in an upright condition in such a way that mounting surfaces on which the circuit and the light-emitting bodies are mounted are perpendicular to a left-right direction.

Description

In-vehicle antenna device

The present invention relates to a vehicle-mounted antenna device.

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

JP 2014-80094 A

However, since the light emitter and the substrate on which the light emitter is mounted are arranged on the periphery of the lower end portion of the case, it is necessary to make it one size larger than the vehicle-mounted antenna device that does not have the 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 a space in the device.

An in-vehicle antenna device according to the present invention includes 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 the vehicle, and has an antenna substrate, a flat plate, and an antenna A light emitter substrate that mounts a light emitter and a circuit that drives the light emitter, and a light emitted by the light emitter arranged in the front are arranged in front of or behind the element in the x direction indicating the front-rear direction of the vehicle. A light guide plate that guides light emitted from a light emitter disposed in the rear or forward, and a lower surface that is open and attached to the antenna base, and includes an antenna element, an antenna substrate, a light emitter substrate, and a light guide plate. And an exterior case having a first opening that transmits light from the light guide plate to the outside, and the light emitter is mounted on both sides of the light emitter substrate to implement the circuit and the light emitter. Mounting surface to be found so that in the y direction perpendicular to a vertical left-right direction in the x direction, the light emitter substrate is mounted in an upright position in the antenna base.

Since the light-emitting substrate includes a metal plate-like member such as a copper foil, there is a possibility of adversely affecting the reception performance of the antenna element disposed nearby.
However, since the light emitter substrate is disposed in front of or behind the antenna element and the mounting surface of the light emitter substrate is erected so as to be perpendicular to the y direction, the mounting surface is perpendicular to the x direction. Compared with a configuration in which the antenna element is erected, the reception performance of the antenna element is less likely to be adversely affected.
For this reason, it becomes possible to provide an illuminating device in a vehicle-mounted antenna apparatus in the state which maintained the characteristic of the antenna element.

In addition, since the light emitting substrate is erected so that the mounting surface is perpendicular to the y direction, the light emitting substrate is arranged so that the mounting surface is erected so as to be perpendicular to the x direction and arranged so as to be perpendicular to the z direction. Compared to the embodiment, the lighting device can be provided in the in-vehicle antenna device by effectively using the space in the in-vehicle antenna device without increasing the dimension in the y direction.

In particular, when the light emitter substrate is arranged in front of the antenna element or the antenna substrate, the AM / FM reception only is provided in the rear region where the restrictions in the y direction and the z direction are gentler than the front and the space is wide. In addition, the lighting device can be provided in the vehicle-mounted antenna device in a state where various antenna elements for receiving GPS, and other electronic devices such as a camera are arranged.
Also, the light emitters are arranged on both sides of the light emitter substrate, the light emitters arranged on one side are used for right light emission when viewed from the front, and the light emitters arranged on the other surface are viewed from the front. It can be used for left light emission, and it becomes possible to mount many light emitters (or large light emitters) in a narrow space.

Further, it becomes possible to arrange a large number of light emitters without increasing the dimension in the y direction, and it is possible to brighten the light irradiated to the outside.

Preferably, an interior case that covers the light emitter is further provided inside the exterior case, and the interior case has a second opening that transmits light from the light emitter, and the light emitter passes through the second opening, and y The light guide plate is disposed in a positional relationship that emits light toward the outside of the direction, and the light guide plate has a light incident portion having an incident surface facing the light emitter through the second opening, and a positional relationship in which a portion faces the first opening. And a reflecting portion that guides light incident on the incident portion backward or forward and reflects the light outward.

More preferably, the surface of the reflecting portion on the side facing the interior case and overlapping with the first opening at least when viewed from the y direction extends in the z direction indicating a vertical direction perpendicular to the x direction and 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 facing the first opening on the surface of the interior case is colored with a brightness of 5 or more in the Munsell display system.

The light that has passed through the reflection 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 radiated to the outside compared to the case where the surface of the interior case was not colored with high brightness. It is possible to brighten the light that is emitted.

More preferably, the groove region has a first groove region and a second groove region farther from the incident part than the first groove region, and the first groove region is adjacent to the x direction as the distance from the incident part increases. The groove is formed so that the interval between the grooves to be narrowed and the depth is increased, and in the second groove region, the interval between adjacent grooves in the x direction is constant and smaller than the interval in the first groove region, and incident. A groove is formed so that the depth increases as the distance from the portion increases, and the depth of the groove in the first groove region increases. The grooves provided in the first groove region and the second groove region are close to the incident portion. The slope on the side is formed so as to be gentler than the slope on the side far from the incident part.

It becomes possible for the light emitted from the light guide plate to the outside in the y direction or the like to have uniform brightness in the x direction.

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

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

More preferably, a diffusing plate is provided between the outer case and the light guide plate, and at least a region that overlaps the first opening when viewed from the y direction is provided on the inner side of the peripheral portion of the diffusing plate. Is given.

By combining the light guide plate and the diffuser plate, it becomes possible to efficiently guide and diffuse the light of the light emitter so as to emit light 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 positioning bosses, and the diffuser plate is a portion on the outer side of the interior case in the light guide plate using the two or more bosses and an adhesive member. Is attached to the interior case so that the space between the diffusion plate and the interior case is sealed with an adhesive member.

In order to irradiate the light from the light emitter in the interior case to the outside, a second opening is provided on the side surface of the interior case. The second opening is sealed at the incident portion of the light guide plate to which the O-ring is attached. The light guide plate attached to the side surface of the interior case is sealed with the diffusion plate and the adhesive member.
For this reason, waterproofing of the 2nd opening can be performed reliably and even when water etc. permeate into the inside from the exterior case, intrusion to the inside of the interior case can be prevented.
Furthermore, the light guide plate can be protected by covering the portion of the light guide plate that is outside the interior case and preventing the intrusion of water between the interior case and the diffuser plate.

Also preferably, the outer case is attached to the antenna base so that the diffusion plate contacts the first opening of the outer case.

Even without providing a light-transmitting window in the first opening, water or the like can hardly enter from the first opening.

Preferably, the outer pad is further formed of an annular elastic member, is attached to the lower peripheral edge of the outer case, and is disposed between the outer case and the vehicle. A drainage notch is provided at the rear of 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 vehicle-mounted antenna device 1 is attached is inclined so that the rear side is lowered, it is easily discharged through a drainage notch installed at the rear side due to gravity.
Moreover, since it is not necessary to provide a window part in 1st opening, there also exists a merit which can form an exterior case with a non-light-transmissive single material.

As described above, according to the present invention, an in-vehicle antenna device having a light emitting function can be provided by effectively using the space in the device.

It is the perspective view which shows the state before each part of the vehicle-mounted antenna apparatus in this embodiment is assembled | attached, and was seen from upper direction. It is the perspective view which shows the state before an antenna element is attached to an interior case, and is seen from upper direction. It is the perspective view which shows the state before an antenna element is attached to an interior case, and is seen from the downward direction. It is a perspective view which shows the state before an O-ring is attached to a light-guide plate. It is a figure which shows xy cross section of a 1st groove area | region. It is a figure which shows xy cross section of a 2nd groove area | region. It is the perspective view which shows the state before a light-guide plate is attached to an interior case, and is seen from upper direction. It is the perspective view which shows the state after the light-guide plate was attached to the interior case, and was seen from upper direction. It is the perspective view which shows the state before an interior case is screwed to an antenna base, and was seen from upper direction. It is a perspective view which shows the state before an adhesive member is attached to a diffusion plate. It is the perspective view which shows the state before a diffuser plate is attached to an interior case, and is seen from upper direction. It is the perspective view which shows the state before an exterior case is attached to an antenna base, and is seen from upper direction. It is the perspective view which shows the state before an exterior pad is attached to an exterior case, and is seen from upper direction. It is the perspective view which shows the state before an exterior pad is attached to an exterior case, and is seen from the downward | lower direction. It is the top view in the perspective view of a vehicle-mounted antenna apparatus. It is a side view of a vehicle-mounted antenna device. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG.

Hereinafter, this embodiment will be described with reference to the drawings. The in-vehicle antenna device 1 according to 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 describe the direction, the front-rear direction of the vehicle to which the vehicle-mounted antenna device 1 is attached is described as the x direction, the left-right direction perpendicular to the x direction is the y direction, and the substantially vertical direction perpendicular to the x direction and the y direction is the z direction. .

The case 10 is a member that covers members constituting the in-vehicle antenna device 1 such as the antenna element 71, and includes an exterior case 11, an exterior pad 13, an interior case 15, an antenna base 17, and an interior pad 19.
The light guide 30 is a member that guides the light of the light emitter 91 provided in 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. A light guide plate 31 and a diffusion plate 33 are provided.
The sealing member 50 is a member that seals the side surface of the interior case 15 and includes an O-ring 51 and an adhesive member 53.
The antenna unit 70 includes an antenna element 71 and an antenna substrate 73.
The light emitting unit 90 includes a light emitter 91 and a light emitter substrate 93.

The outer case 11 is made of a synthetic resin having a non-light-transmitting property and a radio-transmitting property (a resin molded product formed of a synthetic resin including polycarbonate and ASA (Acrylate Styrene Acrylonitrile)). It has a shark fin shape that is inclined so as to be lower than the rear, and both side surfaces are curved inward.

The exterior case 11 is a member constituting the in-vehicle antenna device 1 having an open bottom surface and other than the exterior 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 light emitter 91, and the light emitter substrate 93) are covered from above in the z direction (see FIG. 1).

The side of the exterior case 11 is provided with an opening (first opening 11a) that transmits light from the inside to the outside.

Although the 1st window part (not shown) formed with the synthetic resin which has translucency and radio wave transmissibility may be attached to the 1st opening 11a for the purpose of waterproofing etc., this embodiment may be attached. Then, the diffusion plate 33 is attached to the interior case 15 so as to be in 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 exterior pad 13. Therefore, the first window portion may not be provided. Hereinafter, the first window portion will be described in a form that is not attached to the first opening 11a.

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

The exterior pad 13 is an annular elastic member formed of elastomer (Elastomer), rubber, or the like, and is fitted into the lower peripheral edge of the external case 11 so as to hide the gap between the lower peripheral edge of the external case 11 and the vehicle. Function 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 discharge 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 a non-light-transmitting property and a radio wave transmitting property (a resin molded product formed of a synthetic resin including polycarbonate and ASA (Acrylate Styrene Acrylonitrile)).
The interior case 15 is a member having a lower surface opened and constituting the in-vehicle antenna device 1, and is other than the exterior case 11, the exterior pad 13, the interior case 15, the light guide plate 31, the diffusion plate 33, the O-ring 51, and the adhesive member 53. (Antenna base 17, antenna element 71, antenna substrate 73, light emitter 91, light emitter substrate 93) are covered from above in the z direction.

In the side part of the interior case 15, an opening (second opening 15 a) that transmits light from the light emitting body 91 provided inside and the protrusion 31 c of the light guide plate 31 to the outside in the y direction are locked. 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 and the positioning notch 33b of the diffusion plate 33 are inserted. A second positioning boss 15d is provided (see FIGS. 2 and 3).
The positioning bosses (the first positioning boss 15c and the second positioning boss 15d) may be provided in the interior case 15, but may be provided in the light guide plate 31 or the diffusion plate 33. .
It is desirable that two or more second positioning bosses 15d for positioning the diffusion plate 33 are provided.

The second opening 15a may be provided with a second window portion (not shown) formed of a synthetic resin having translucency and radio wave permeability for the purpose of waterproofing, etc. Then, since the incident part 31a of the light guide plate 31 with the O-ring 51 closes the second opening 15a, the second window part may not be provided. Hereinafter, a description will be given in a form in which the second window portion is not attached to the second opening 15a.

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

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 that engages with the first locking claw 11b of the outer case 11 to lock the outer case 11 on the outer peripheral portion (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 substrate 73 is disposed so that a mounting surface of an amplifier or the like faces in the vertical direction (perpendicular to the z direction).
The light emitter substrate 93 is in front of or behind the antenna element 71 and the antenna substrate 73, and the light projecting surface of the light emitter 91 and the mounting surface of the circuit that drives the light emitter 91 face in the horizontal direction (relative to the y direction) The light emitters 91 are mounted on both the left and right sides. In the present embodiment, a mode in which the light emitter substrate 93 is disposed in front of the antenna element 71 and the antenna substrate 73 is shown.

When the antenna base 17 is attached to the interior case 15, the mounting position of the light emitter 91 on the light emitter substrate 93 and the light emitter substrate are set such that the light emitter 91 faces the second opening 15 a of the interior case 15. The position where 93 is attached to the antenna base 17 is determined.
On the periphery of the antenna base 17, a recess (screw receiver 17 b) used for screwing with the interior case 15 is provided.

The interior pad 19 is attached to the periphery 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 light emitter 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, and 17). reference).
The in-vehicle antenna device 1 is fixed to the upper surface of the vehicle by screwing a vehicle body mounting screw 17 d to the antenna base 17.
A seal member 17e, which is an annular elastic member formed of an elastomer or rubber, is provided on the lower surface of the antenna base 17, and the antenna base 17 and the vehicle are watertightly sealed by the seal member 17e. .

The interior pad 19 is an annular elastic member formed of an elastomer or rubber, 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 light emitter substrate 93 are disposed on the inner side of a region where the interior pad 19 is attached in the antenna base 17.

The light guide plate 31 is made of synthetic resin (resin molded product such as polycarbonate) having translucency, high refractive index, and radio wave transmissivity.
The light guide plate 31 includes an incident portion 31a having an incident surface 31a1 facing the light emitter 91 and a reflecting portion 31b, and is attached between the exterior case 11 and the interior case 15 (see FIGS. 4 to 8).

The incident portion 31a and the reflecting portion 31b are in a substantially perpendicular positional relationship, and the light guide plate 31 has a substantially L-shaped xy section.
The reflector 31b guides the light emitted in the left (right) direction by the light emitter 91 disposed in the front (or the light emitted in the left (right) direction by the light emitter 91 disposed in the rear. And a part thereof is in a positional relationship facing the first opening 11a and reflects the guided light toward the outside in the y direction or the like.

The incident part 31a and the reflecting part 31b are provided with a protrusion 31c.
When attaching the light guide plate 31 to the interior case 15, the projection 31 c of the incident portion 31 a engages with the second opening 15 a of the interior case 15, and the projection 31 c of the reflection portion 31 b is connected to the projection receiving portion 15 b of the interior case 15. Engage.

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

In a region (inner side surface) on the side facing the interior case 15 at the time of attachment to the interior case 15 in the reflecting portion 31b, at least in a region overlapping the first opening 11a when viewed from the y direction, the xy cross section is substantially V-shaped or A groove region 31e in which a plurality of substantially U-shaped grooves extending in the z direction (patterns for irregular reflection) are arranged in the x direction is provided.
The groove region 31e includes a first groove region 31e1 and a second groove region 31e2 that is further away from the incident portion 31a than the first groove region 31e1.

In the first groove region 31e1, the distance between the grooves adjacent to each other in the x direction (S ₁₁ , S ₁₂ ...) Becomes narrower and the groove depth (d ₁₁ , d ₁₂ ... ) Is increased (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 distance between adjacent grooves in the x direction (S ₂₁ , S ₂₂ ...) Is constant, narrower than the distance in the first groove region 31e1, and the depth of the groove becomes farther away from the incident part 31a. Grooves are formed so that (d ₂₁ , d ₂₂ ...) 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 such that the inclination closer to the incident part 31a is gentler than the inclination far from the incident part 31a.

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

The space between the incident part 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 transmissivity, and a portion of the light guide plate 31 located outside the inner case 15 is 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 33 a and a positioning notch 33 b 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 interior case 15.

When the diffusion plate 33 is attached to the interior case 15 and the exterior case 11 and the interior case 15 are attached to the antenna base 17, the first opening is seen at least from the y direction. In the region overlapping with 11a (central region 33c), texture processing and dimple processing are performed in order to increase the diffuse transmission of the light irradiated from the reflecting portion 31b.

Further, when the diffusion plate 33 is attached to the interior case 15 and the exterior case 11 and the interior case 15 are attached to the antenna base 17, the embossing process is performed so that no gap is formed between the exterior case 11 and the diffusion plate 33. It is desirable that the dimple processing and the like be performed on the inner surface side facing the light guide plate 31 in the central region 33 c of the diffusion plate 33.

A peripheral portion of the diffusion plate 33, inside the second positioning hole 33a and the positioning notch 33b and facing the interior case 15 when attached to the interior case 15, is formed in an annular shape such as a double-sided tape. An affixing region 33d for adhering the adhesive member 53 is provided.
The diffusion plate 33 is attached to the side surface of the interior case 15 through the adhesive member 53 so as to cover a portion of the light guide plate 31 located outside the interior case 15.
The diffusion plate 33 and the interior case 15 are in close contact with each other by the adhesive member 53, and the second opening 15 a of the interior case 15 is double-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 33 c of the diffusion plate 33 faces the first opening 11 a of the outer case 11, and the peripheral portion of the first opening 11 a is the central region of the diffusion plate 33. The shapes of the light guide plate 31, the diffusion plate 33, the exterior case 11, and the interior case 15 are determined so as to be in a positional relationship in contact with the outer surface of 33 c.

When the light emitter substrate 93 is disposed in front, the light emitted from the light emitter 91 toward the outside in the y direction in front of the vehicle-mounted antenna device 1 enters the incident portion 31a from the incident surface 31a1 and is substantially L-shaped. It is guided to the rear reflecting portion 31b at the shape portion, reflected by the groove region 31e in the reflecting portion 31b, and irradiated outward (primary diffusion).
When the light emitter substrate 93 is disposed rearward, the light emitted from the light emitter 91 toward the outside in the y direction behind the vehicle-mounted antenna device 1 enters the incident portion 31a from the incident surface 31a1 and is guided forward. Then, the light is reflected by 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 includes an upper element 71a and a lower element (wavelength shortening element) 71b, and is attached above the inner side of the interior case 15 via an engaging claw (not shown).
The upper element 71a has a portion formed into a planar shape or a meander shape by processing a metal plate (conductive 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 portion 71b1 of the lower element 71b.
When the interior case 15 is attached to the antenna base 17, the lower terminal 71 b 2 of the lower element 71 b is sandwiched between the conductor case spring 73 a of the antenna substrate 73 attached to the antenna base 17 by the interior case 15 to which the antenna element 71 is attached. Thus, the antenna element 71 and the antenna substrate 73 can be electrically connected.

The antenna element 71 is not limited to a form constituted by the upper element 71a and the lower element 71b for receiving AM / FM broadcasting, but may be a form constituted by a planar antenna for receiving GPS.
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 interior case 15.

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

Next, the assembly procedure of the vehicle-mounted antenna device 1 will be described.
An antenna substrate 73 and a light emitter substrate 93 are attached to the antenna base 17 in advance.
The antenna element 71 is attached to the inside of the interior case 15 (see Procedure 1, FIG. 2, and FIG. 3).
The light guide plate 31 is attached to the outside of the interior case 15 (see Procedure 2, FIGS. 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 (procedure 3, see FIG. 9).
The diffusion plate 33 is attached to the outside of the interior case 15 (see procedure 4 and FIG. 11).
Note that the procedure 3 may be performed before the procedure 2 or may be performed after the procedure 4.
The exterior case 11 is attached to the antenna base 17 (see Procedure 5 and FIG. 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 includes a metal plate member such as copper foil, it adversely affects the reception performance of the antenna element 71 disposed nearby (decreases the reception performance on the side where the light emitter substrate 93 is present). There is a risk of causing
However, in the present embodiment, the light emitter substrate 93 is disposed in front of or behind the antenna element 71 and the antenna substrate 73, and the light emitter substrate 93 is installed upright so that the mounting surface is perpendicular to the y direction. Therefore, it is difficult to adversely affect the reception performance of the antenna element 71 as compared with a configuration in which the mounting surface is erected so as to be perpendicular to the x direction.
For this reason, the lighting device can be provided in the vehicle-mounted antenna device 1 while maintaining the characteristics of the antenna element 71.

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

In particular, when the light emitter substrate 93 is disposed in front of the antenna element 71 and the antenna substrate 73, the AM / FM is arranged in a rear region where the restrictions in the y direction and the z direction are gentler than the front and the space is wide. The lighting device can be provided in the vehicle-mounted antenna device 1 in a state where various antenna elements for receiving GPS as well as other electronic devices such as a camera are arranged.
Further, the light emitters 91 are disposed on both surfaces of the light emitter substrate 93, the light emitters 91 disposed on one surface are used for right light emission when viewed from the front, and the light emitters 91 disposed on the other surface are used. It can be used for left light emission when viewed from the front, and a large number of light emitters 91 (or large light emitters 91) can be mounted in a narrow space.

When the number of the light emitters 91 is increased in order to increase the luminance, the light emitters 91 are mounted on the light emitter substrate 93 so as to emit light backward (or forward) in the x direction. The bodies 91 are arranged in the z direction or the y direction, or both, which may increase the dimension in the y direction of the light emitter substrate 93 to be mounted.
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 direction and the z direction, and it is not easy to arrange many light emitters 91 in the y direction.

On the other hand, in this embodiment, the light emitter 91 is mounted on the light emitter substrate 93 so as to emit light toward the outside in the y direction, the incident surface 31a1 is disposed at a position facing the light emitter 91, and the xy cross section. Is substantially L-shaped, and light is emitted in a planar shape behind the light emitter 91 using the light guide plate 31 that guides light backward using reflection.
Alternatively, the light emitter 91 is mounted on the light emitter substrate 93 so as to emit light toward the outside in the y direction, the incident surface 31a1 is disposed at a position facing the light emitter 91, and the xy cross section is substantially L-shaped. The light guide plate 31 that guides light forward using reflection is used to emit light in a planar shape in front of the light emitter 91.
For this reason, when the number of the light emitters 91 is increased in order to increase the luminance, the light emitters 91 are arranged in the z direction or the x direction or both. Will not Increase.
Therefore, in this embodiment, it becomes possible to arrange many light emitters 91 as compared with the embodiment in which the light emitters 91 are mounted on the light emitter substrate 93 so as to emit light toward the rear side in the x direction. It becomes possible to brighten the light irradiated to the outside.

Further, at least a portion of the surface of the interior case 15 that faces the first opening 11a of the exterior case 11 has a color with high brightness (for example, a color of brightness of 5 or more in the Munsell display system such as white).
For this reason, 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 has not been colored with high brightness. Compared with the form, it is possible to brighten the light irradiated to the outside.

In addition, the light guide plate 31 that primarily diffuses light from the light emitter 91 has a groove region 31e in which a plurality of grooves extending in the z direction are arranged in the x direction with an xy section being substantially V-shaped or U-shaped.
The first groove region 31e1 close to the incident part 31a is formed such 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 part 31a increases.
The second groove region 31e2 away from the incident part 31a has a constant gap S between adjacent grooves in the x direction and is narrower than the first groove region 31e1, and the depth d of the groove increases as the distance from the incident part 31a increases. The groove is formed 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 such that the inclination on the side closer to the incident part 31a becomes gentler than the inclination on the side far from the incident part 31a.
By setting the groove shape of the light guide plate 31 to the above-described configuration, light emitted from the light guide plate 31 to the outside in the y direction or the like can be made to have uniform luminance.

Further, inside the interior case 15, a member for securing the antenna function such as the antenna element 71 and an electrical member necessary for light emission such as the light emitter 91 are accommodated, and the light guide plate 31 is disposed outside the interior case 15. A diffusion plate 33 is attached, and the outer case 11 covers them.
For this reason, without changing members other than the exterior case 11 and the exterior pad 13, the exterior case 11 and the exterior pad 13 can be used with different designs, and the degree of freedom in exterior design can be increased. become.
Further, if the shape of the first opening 11a is changed, the shape of the region that shines through the light guide plate 31 and the diffusion plate 33 is changed, so that the appearance impression can be greatly changed.

In addition, a region (center region 33c) inside the peripheral portion of the diffusion plate 33 that further diffuses the light primarily diffused by the light guide plate 31 and overlaps the first opening 11a when viewed from at least the y-direction Processing and dimple processing are performed.
By combining the light guide plate 31 and the diffusing plate 33 including these configurations, it is possible to efficiently guide and diffuse the light of the light emitter 91 toward the outside of the in-vehicle antenna device 1.

Moreover, in order to irradiate the light from the light emitter 91 in the interior case 15 to the outside, 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 an O-ring 51 is attached. The light guide plate 31 that is sealed by the incident portion 31 a of 31 and attached to the side surface of the interior case 15 is sealed by the diffusion plate 33 and the adhesive member 53.
For this reason, the second opening 15a can be reliably waterproofed, and even when water or the like enters from the exterior case 11, entry into the interior case 15 can be prevented.
Furthermore, the diffusion plate 33 and the adhesive member 53 cover a portion of the light guide plate 31 that is outside the interior case 15, and prevents water from entering between the interior case 15 and the diffusion plate 33. Can also be protected.

Further, since the outer case 11 is attached to the antenna base 17 so that the diffusion plate 33 is in contact with the first opening 11a of the outer case 11, the first opening 11a is not provided with a transparent window portion. Water or the like can hardly enter the inside from the one opening 11a.

Moreover, in a normal vehicle-mounted antenna device, a waterproof structure that makes it difficult for water to enter inside is considered, but a structure that discharges water that has entered inside is often not considered.
On the other hand, in this 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 from the first opening 11a and the like. Can be discharged to the outside through the drainage notch 13a.
In particular, since the roof of the vehicle to which the vehicle-mounted antenna device 1 is attached is inclined so that the rear side is lowered, it is easily discharged through the drainage notch 13a installed at the rear side by gravity.
Moreover, since it is not necessary to provide a window part in the 1st opening 11a, there also exists a merit which can form the exterior case 11 with a non-light-transmissive single material.

In addition, 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 exterior case 11.
For example, a configuration in which a light receiving device (not shown) such as a camera is provided in the in-vehicle antenna device 1, light from the outside is transmitted through the first opening 11a, and light transmitted through the light receiving device is received (photographed) is considered. It is done. The form which the 1st opening 11a is provided in not only the side surface of the exterior case 11 but a front surface, a back surface, or an upper surface is also considered.
In this case, it is conceivable that a part of a cover such as a lens covering the light receiving device or its front surface 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 becomes possible to discharge outside through the drainage notch 13a.

DESCRIPTION OF SYMBOLS 1 Car-mounted antenna apparatus 10 Case 11 Exterior case 11a 1st opening (side opening)
11b 1st claw 13 exterior pad 13a drainage notch 15 interior case 15a 2nd opening (dent opening)
15b Projection receiving portion 15c First positioning boss 15d Second positioning boss 15e Screw hole 17 Antenna base 17a Second locking claw 17b Screw receiving 17c Cable 17d Car body mounting screw 17e Seal member 19 Interior pad 30 Light guide portion 31 Light guide plate 31a Incident part 31a1 Incident surface 31b Reflective part 31c Protrusion 31d First positioning hole 31e Groove area 31e1 First groove area 31e2 Second groove area 33 Diffusion plate 33a Second positioning hole

33b Positioning notch

33c Central area

33d Pasting area 50 Sealing member 51 O-ring 53 Adhesive member 70 Antenna portion 71 Antenna element 71a Upper element 71b Lower element 71b1 Upper portion 71b2 Lower terminal 73 Antenna substrate 73a Conductor leaf spring 90 Light emitting portion 91 Light emitter 93 Light emitter substrate

Claims

An antenna element;
An antenna substrate for amplifying a signal obtained from the antenna element;
An antenna base attached to the upper surface of the vehicle, to which the antenna substrate is attached;
A light emitter substrate that is flat and is disposed in front of or behind the antenna element in the x direction indicating the front-rear direction of the vehicle, and on which a light emitter and a circuit that drives the light emitter are mounted;
A light guide plate that guides the light emitted from the light emitter arranged in the front to the rear, or guides the light emitted from the light emitter arranged in the rear to the front,
An exterior case having a first opening that has a lower surface opened, is attached to the antenna base, covers the antenna element, the antenna substrate, the light emitter substrate, and the light guide plate, and transmits light from the light guide plate to the outside; With
The light emitter is mounted on both sides of the light emitter substrate,
The light emitter substrate is mounted in a standing state on the antenna base so that a mounting surface for mounting the circuit and the light emitter is perpendicular to a y direction indicating a left-right direction perpendicular to the x direction. A vehicle-mounted antenna device.
An inner case that covers the light emitter is further provided inside the outer case,
The interior case has a second opening that transmits light from the light emitter,
The light emitter is arranged in a positional relationship of emitting light toward the outside in the y direction through the second opening,
The light guide plate has a light incident portion having an incident surface facing the light emitter through the second opening, and a part of the light guide plate is in a positional relationship facing the first opening, and transmits light incident on the light incident portion. The vehicle-mounted antenna device according to claim 1, further comprising: a reflecting portion that is guided backward or forward and reflects outward.
A z-direction indicating a vertical direction perpendicular to the x-direction and the y-direction in a region of the reflecting portion facing the interior case and overlapping with the first opening at least when viewed from the y-direction A plurality of grooves extending in the x direction are provided,
The in-vehicle antenna device according to claim 2, wherein at least a portion of the surface of the interior case facing the first opening has a color having a brightness of 5 or more in a Munsell display system.
The groove region has a first groove region and a second groove region that is further away from the incident portion than the first groove region,
The first groove region is formed such that the distance between the grooves adjacent to the x direction becomes narrower and the depth increases as the distance from the incident portion increases.
The second groove region has a constant interval between adjacent grooves in the x direction, is narrower than the interval in the first groove region, and increases in depth as the distance from the incident portion increases. The groove in the first groove region The groove is formed to be larger than the depth of
Each of the grooves provided in the first groove region and the second groove region is formed so that an inclination closer to the incident part is gentler than an inclination far from the incident part. The in-vehicle antenna device according to claim 3,
The interior case contains the antenna element,
Between the interior case and the antenna base is sealed with an interior pad composed of an annular elastic member,
The in-vehicle 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,
6. The vehicle-mounted device according to claim 5, wherein an inner surface of a peripheral portion of the diffusion plate and at least a region overlapping with the first opening when viewed from the y direction is subjected to texture processing or dimple processing. Antenna device.
One of the interior case and the diffusion plate is provided with two or more positioning bosses,
The diffusion plate is attached to the interior case using the two or more bosses and an adhesive member so as to cover a portion outside the interior case in the light guide plate,
The in-vehicle antenna device according to claim 6, wherein the diffusion plate and the interior case are sealed with the adhesive member.
The in-vehicle antenna device according to claim 6, wherein the outer case is attached to the antenna base so that the diffusion plate contacts the first opening of the outer case.
It is composed of an annular elastic member, is attached to the lower edge of the exterior case, and further comprises an exterior pad disposed between the exterior case and the vehicle,
The in-vehicle antenna device according to claim 6, wherein a drainage notch is provided at a lower end of the exterior pad and behind the x direction.