JP7338609B2 - automotive display - Google Patents

Description

The present invention relates to display devices for automobiles.

Conventionally, from the viewpoint of enhancing the safety of automobiles, it has been required to reduce the impact at the time of collision. In order to meet such demands, structures that are deformed by the impact of a collision are widely used in the frames, bumpers, grilles, etc. of the vehicle body. According to the structure as described above, the collision energy can be absorbed by the deformation of the frame, bumper, grille, etc. of the vehicle body due to the impact at the time of collision.

On the other hand, signage having a display function may be placed in front, rear, or side of the vehicle for the purpose of calling attention to the outside of the vehicle, displaying information, advertising, or the like. In recent years, due to the development of automatic driving technology and the purpose of decorating automobiles, it has been considered to arrange a display device such as a signage so as to occupy most of the front, rear, or side as described in Patent Document 1. there is

Patent No. 6477856

When the display device is arranged so as to occupy most of the surface of the vehicle body, the frame, bumper, grille, etc., occupy less of the vehicle body surface, and it is conceivable that the impact absorption effect of these elements will be reduced. Therefore, it is effective to absorb the impact by the display device which occupies most of the space. A conventional display device is used only in a limited range of the exterior of a vehicle, such as a bus destination display, and has a small contribution to impact absorption at the time of a collision. Therefore, the actual situation is that almost no proposal has been made so far to make the structure of the automotive display device itself capable of absorbing the impact.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a display device for a vehicle that can mitigate the impact at the time of a collision.

An automobile display device of the present invention is an automobile display device to be attached to a vehicle body of an automobile, comprising: a display unit for displaying an image; an outer panel arranged outside the display unit and transmitting a display; and a mounting frame formed in a hollow shape for mounting the outer panel to the vehicle body, wherein the mounting frame deforms when receiving an impact.

The automotive display device of the present invention includes a mounting frame that is deformable when receiving an impact. For example, when a vehicle collides, the deformation of the mounting frame can absorb energy and mitigate the impact.

1 is a perspective view showing an automobile display device of the present invention; FIG. It is an enlarged sectional view showing a section of a mounting frame. 1 is a cross-sectional view showing a state in which a display device for an automobile according to the present invention is attached to a vehicle body of an automobile; FIG. 4 is a cross-sectional view showing deformation of a mounting frame when the automotive display device of FIG. 3 receives an impact; FIG. 4 is a cross-sectional view showing deformation of a mounting frame when the automotive display device of FIG. 3 receives an impact; FIG. FIG. 11 is an enlarged cross-sectional view showing a modification of the mounting frame; FIG. 11 is an enlarged cross-sectional view showing a modification of the mounting frame;

A display device 1 for a vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the overall configuration of an automobile display device 1. FIG.

(Overall Configuration of Automotive Display Device 1)
The automotive display device 1 is a display device that is attached to the front, rear, or side of the vehicle body of the vehicle and displays information to the outside. The automotive display device 1 includes a display unit 2 that displays images and the like, and an outer panel 3 that is arranged outside the vehicle body relative to the display unit 2 and transmits display. The outer panel 3 is fixed to the frame F of the vehicle body via the mounting frame 4 . When the automotive display device 1 is attached to the frame F of the vehicle body, the surface of the outer panel 3 becomes a design surface facing the outside of the vehicle body, and the display unit 2 and the mounting frame 4 are arranged on the back surface of the outer panel 3 .

The display unit 2 includes a display element 21 having a display function and a substrate 22 holding the display element 21 . Examples of the display element 21 include liquid crystal display elements, LED elements, organic EL elements, inorganic EL elements, and the like. The base material 22 is not particularly limited, but is preferably a flat plate-shaped resin member. As the resin material, resins such as polyester, vinyl ester, epoxy, and urethane are preferable, and reinforced resins obtained by reinforcing these resins with fibers such as glass, carbon, cellulose, or minerals such as talc and calcium carbonate are more preferable. . The display element 21 may be molded while being embedded in the substrate 22 . The display unit 2 may be attached directly to the inner surface of the outer panel 3, but the display unit 2 is fixed to the mounting frame 4 in this embodiment. More specifically, the display unit 2 is fixed by bolts 23 to inner joint portions 44a of the mounting frames 4, which will be described later.

The outer panel 3 is a plate-shaped member made of a transparent or translucent material that transmits the display of the display unit 2 to the outside of the vehicle body and protects the display unit 2 . Specific examples of materials for the outer panel 3 include resin materials such as polycarbonate, acrylic resin, urethane resin, and ABS. Polycarbonate is a particularly preferable resin material from the viewpoint of less breakage at the time of collision and the ability to reduce the impact by deforming at the time of collision.

As shown in FIG. 2, the mounting frame 4 is a hollow metal member having a trapezoidal cross section (hat-shaped). The mounting frame 4 includes a planar top portion, side wall portions 43 extending obliquely outward from both ends of the top portion, and a bottom portion extending outward from the side wall portions 43 and parallel to the top portion. The top portion serves as a mounting portion 41 for fixing the mounting frame 4 to the vehicle body frame F of the automobile. The mounting portion 41 is provided with a mounting hole 42 through which a bolt or the like is inserted. On the other hand, the bottom portion serves as a joint portion 44 that is joined to the outer panel 3 by welding, adhesive, or the like. The mounting portion 41, the side wall portion 43, and the outer panel 3 joined to the joint portion 44 form a hollow shape with a trapezoidal cross section. Since the mounting frame 4 has a hollow interior, it deforms when receiving an impact. The mounting frame 4 is made of a metal plate that can be deformed by impact. Specifically, the mounting frame 4 is preferably made of iron, aluminum, or alloys thereof.

The mounting frames 4 form a pair and are arranged with their longitudinal directions opposed to each other. In FIG. 1, two mounting frames 4 are arranged to face each other with a space therebetween in the vertical direction. The arrangement of the mounting frame 4 is not limited to the vertical direction. The mounting frames 4 may be arranged so as to be spaced apart in the left-right direction and face each other. Each mounting frame 4 is arranged at the end of the outer panel 3 in the vertical direction. That is, the upper mounting frame 4 is arranged at the upper end of the outer panel 3 and the lower mounting frame 4 is arranged at the lower end of the outer panel 3 .

The mounting frame 4 is joined to the outer panel 3 at an inner joint portion 44a, which is the joint portion 44 on the side facing each other, and an outer joint portion 44b, which is the joint portion 44 outside the inner joint portion 44a. At this time, in at least one mounting frame 4 among the mounting frames 4 facing each other, the inner joint portion 44a preferably has a weaker joint strength than the outer joint portion 44b. If the bonding strength of the inner joint portion 44a is weak, the joint between the inner joint portion 44a and the outer panel 3 is preferentially or selectively disengaged when receiving an impact. The bonding strength of the inner joint portion 44a and the outer joint portion 44b varies, for example, the outer joint portion 44b is full joint, while the inner joint portion 44a is partially jointed, or the strength of the adhesive used is changed. It can be adjusted by

(Deformation of mounting frame 4)
Deformation of the mounting frame 4 when the automotive display device 1 receives an impact will be described with reference to FIGS. 3 to 5. FIG. 3 to 5 are diagrams showing the upper mounting frame 4 arranged at the upper end of the outer panel 3. FIG. FIG. 3 is a cross-sectional view showing the automotive display device 1 in a state in which it has not received an impact. 4 and 5 are cross-sectional views showing deformation of the mounting frame 4 when receiving an impact.

The outer panel 3 is joined to the mounting frame 4 at inner joints 44a and outer joints 44b. In this embodiment, in both the upper mounting frame 4 and the lower mounting frame 4, the outer joint portion 44b is entirely adhered with adhesive, while the inner joint portion 44a is partially adhered with adhesive. The joint 44a is weaker than the outer joint 44b. In this embodiment, the inner joint portion 44a is intermittently bonded in a range of about 5 to 85% of the length of the mounting frame 4 in the longitudinal direction. The bonding strength of the inner joint portion 44a becomes weaker than the bonding strength of the outer joint portion 44b by partially not applying the adhesive. The display unit 2 is fixed by bolts 23 to the surface opposite to the outer panel 3 at the inner joint portion 44a. The mounting frame 4 is fixed to the body frame F of the automobile at the mounting portion 41 by bolts (not shown) or the like. That is, in this embodiment, the display unit 2 and the outer panel 3 are fixed to the body frame F of the automobile via the mounting frame 4 .

When an impact is applied to the automotive display device 1 due to an automobile collision or the like, the outermost outer panel 3 is deformed, energy is transmitted from the outer panel 3 to the mounting frame 4, and as shown in FIG. The side wall portion 43 of the frame 4 undergoes buckling deformation. When the side wall portion 43 undergoes buckling deformation, energy at the time of collision is absorbed, and the impact is mitigated.

When the automotive display device 1 receives a further impact, as shown in FIG. 5, the joint between the inner joint portion 44a having a weak joint strength and the outer panel 3 is broken. Energy from the collision is absorbed when the inner joint portion 44a is disengaged. In addition, since the inner joint part 44a is removed, the distance between the fulcrums of the pair of mounting frames 4 holding the outer panel 3 is increased, the restriction on the deformation of the outer panel 3 is relaxed, and the outer panel 3 is less likely to be damaged.

Furthermore, if the display unit 2 is fixed to the inner joint portion 44a when the joint between the inner joint portion 44a and the outer panel 3 is released, tensile or compressive stress is applied to the base material 22 of the display unit 2. , the deformation of the base material 22 can absorb the energy of the collision and mitigate the impact.

(Modification)
6 and 7 are sectional views showing modifications of the mounting frame 4. FIG. The mounting frame 40 of FIG. 6 is configured by stacking three metal members, that is, a hat-shaped outer frame 45, a reinforcing member 46, and a cover member 47, which are similar to those of the above embodiment.

The mounting frame 40 forms a hollow space with a trapezoidal cross section by an outer frame 45 and a lid member 47 joined to the bottom of the outer frame 45 . The hollow space includes a pair of support portions 46a and 46b that abut against the top portion of the outer frame 45 and the lid member 47, respectively, and a vertical plate portion 46c that connects the pair of support portions 46a and 46b. A Z-shaped stiffening member 46 is received. The buckling strength of the mounting frame 40 can be easily adjusted by appropriately adjusting the thickness of the reinforcing member 46, the angle of the upright portion 46c, and the like.

The mounting frame 40 is provided with a reinforcing member 46 to prevent deformation of the mounting frame 40 and prevent deformation of the mounting frame 40 due to a small impact applied by a person's hand while the vehicle is stopped or during assembly work. The mounting frame 40 can be designed to deform when subjected to impact. In addition, by increasing the strength of the mounting frame 40, the amount of energy absorbed during buckling deformation is increased, resulting in an excellent impact mitigation effect.

The mounting frame 400 shown in FIG. 7 consists of two frames, a hat-shaped outer frame 45 similar to that of the above-described embodiment, and an inner frame 48 whose side wall portion 43 is smaller than the outer frame 45 and which is arranged inside the outer frame 45 . It is constructed by stacking metal members. The outer frame 45 and the inner frame 48 are arranged with their tops spaced apart from each other.

When the mounting frame 400 deforms, the side wall portion 43 of the outer frame 45 first deforms. After the inner surface of the top of the outer frame 45 contacts the outer surface of the top of the inner frame 48, the outer frame 45 and the inner frame 48 are deformed. While only the outer frame 45 is deformed, it is deformed with relatively small energy, but after the outer frame 45 contacts the inner frame 48, the energy required for deformation increases. With such a configuration, the energy peak associated with the deformation of the mounting frame 400 can be split into two. The mounting frame 400 may have a multi-layered structure with three or more sheets, and the energy peaks may be dispersed three or more times.

1: Automotive display device 2: Display unit 21: Display element 22: Base material 23: Bolt 3: Outer panel 4, 40, 400: Mounting frame 41: Mounting part 42: Mounting hole 43: Side wall portion, 44: Joint portion, 45: Outer frame, 46: Reinforcing member, 47: Lid member, 48: Inner frame

Claims (4)

In an automotive display device attached to the vehicle body of an automobile,
a display unit for displaying an image;
an outer panel arranged outside the display unit and transmitting the display;
a mounting frame molded into a hollow shape for mounting the outer panel to the vehicle body;
with
The automotive display device, wherein the mounting frame deforms when receiving an impact. The mounting frames are arranged in pairs so that their longitudinal directions face each other,
at least one of the mounting frames has an inner joint portion joined to the outer panel on a side facing the other mounting frame;
an outer joint joined to the outer panel outside the inner joint,
2. The automobile display according to claim 1, wherein the inner joint portion has a lower joint strength than the outer joint portion, and the joint between the inner joint portion and the outer panel is released when an impact is received. Device. 3. The automotive display device according to claim 2, wherein the display unit is fixed to the mounting frame at the inner joint. The automotive display according to any one of claims 1 to 3, wherein the mounting frame is configured by stacking two or more metal members, and the energy peak during deformation is dispersed two or more times. Device.

Images