Attachment structure of head-up display device to vehicle

Abstract

Provided is a mounting structure for mounting a head-up display device to a vehicle, the structure being capable of reducing virtual image blur occurring due to vibration. The HUD device (1) includes a housing (70), a display device (30), a plane mirror (21), a concave mirror (20), and a control portion (60). The concave mirror (20) is rotatably supported by the housing (70). A mounting structure (101) for mounting an HUD device (1) to a vehicle is provided with a first elastic member (42) and a second elastic member (43) to reduce virtual image blur caused by vibration. The first elastic member (42) is provided between the vehicle body structure (100) and a protruding portion (41) provided to the housing (70). A second elastic member (43) is provided between a rear surface (a surface not on the reflective surface side) of the concave mirror (20) and an inner surface of the housing (70).

Description

Technical Field

[0001] The present invention relates to an attachment structure of a head-up display device to a vehicle. Background Art

[0002] As is well known, a head-up display device attached to a vehicle is configured to display vehicle driving information and the like as a virtual image to a driver on the front side (outside of the vehicle) of a windshield (see Patent Document 1).

[0003] Citation List

[0004] Patent Document

[0005] Patent Document 1: JP2023-60690A Summary of the Invention

[0006] Technical Problem

[0007] There is a situation where a conventional head-up display device may cause vibration (vibration out of sync with the vibration of the vehicle) due to a certain looseness in the attachment structure to the vehicle, resulting in blurring of the displayed virtual image. In the case of blurred virtual image, the vehicle driving information displayed on the virtual image cannot be correctly read, thus hindering the driver's driving.

[0008] Therefore, an object of the present invention is to provide an attachment structure of a head-up display device to a vehicle that can reduce blurring of the virtual image caused by vibration.

[0009] Technical Solution

[0010] The present invention is characterized in that, in the attachment structure of the head-up display device to the vehicle, an elastic member in contact therewith is arranged between the housing of the head-up display device and the vehicle.

[0011] Advantageous Effects

[0012] According to the present invention, vibration out of sync with the vehicle vibration can be suppressed, thereby reducing blurring of the virtual image. Brief Description of the Drawings

[0013] Figure 1 is a schematic diagram showing an installation aspect of a head-up display device according to an embodiment of the present invention.

[0014] Figure 2 is a schematic diagram showing Figure 1 the attachment structure of the head-up display device to the vehicle in

[0015] Figure 3 is Figure 2 a perspective view of the head-up display device in

[0016] Figure 4Yes Figure 3 A perspective view of the head-up display device, observed from another angle.

[0017] Figure 5 Is used to describe Figure 4 A view of the attachment structure between the head-up display device and the vehicle in

[0018] Figure 6 Yes Figure 5 An exploded view of the head-up display device in Detailed implementation mode

[0019] "An attachment structure between a head-up display device and a vehicle" according to an embodiment of the present invention will be described with reference to Figures 1 to 6 Proceed.

[0020] Figure 1 Is a schematic diagram for showing the installation aspect of a head-up display device 1 (hereinafter referred to as "HUD device") according to an embodiment of the present invention. As Figure 1 Shown, the HUD device 1 is configured to display vehicle driving information and the like as a virtual image 90 on the front side (outside the vehicle) of the windshield Ws by projecting display light 10 on the windshield Ws, and is housed inside the instrument panel of the vehicle C.

[0021] Figure 2 Is to show Figure 1 A schematic diagram of the attachment structure 101 between the HUD device 1 and the vehicle C in Figure 2 The reference numeral 100 in Figures 3 to 5 refers to the vehicle body structure inside the instrument panel. Figure 6 Is an external view of the HUD device 1,

[0022] As Figure 2 Shown, the HUD device 1 includes a housing 70, a display device 30, a flat mirror 21, a concave mirror (equivalent to "reflection member") 20, and a control section 60. In addition, as Figure 6 Shown, the HUD device 1 further includes a pair of support members 23 for supporting the concave mirror 20 to rotate freely, and a rotation device 24 for applying a rotational force to the concave mirror 20. The display device 30 can adopt a liquid crystal display or the like. The control section 60 controls the display device 30 and the rotation device 24.

[0023] As Figures 3 to 5As shown, the housing 70 includes a lower case 40 and an upper case 50 assembled to each other, and a cover member 81 for blocking an opening 80 formed in the upper case 50. The housing 70 is configured such that, in a state where the housing 70 is attached to the vehicle C, the lower case 40 is located on the lower side and the upper case 50 is located on the upper side. The lower case 40 and the upper case 50 are made of a light-shielding synthetic resin, and the cover member 81 is made of a translucent synthetic resin.

[0024] In the lower case 40, a plurality of brackets 45 are fixed to the vehicle body structure 100 by bolts. Figure 6 Reference numeral 45a in the figure is a bolt insertion hole. Further, in the lower case 40, a protruding portion 41 in the shape of a strut protruding downward is arranged.

[0025] The display device 30, the plane mirror 21, and the control section 60 are accommodated inside the housing 70 and fixed to the housing 70. Further, a part of the display device 30 is provided outside the lower case 40. The concave mirror 20 is accommodated in the housing 70 and is supported by the lower case 40 through the pair of support members 23 so as to be rotatable freely.

[0026] The concave mirror 20 will be described in further detail. The concave mirror 20 includes a rectangular plate-shaped main body portion 20a and a pair of shaft portions 20b protruding from both end portions of the main body portion 20a respectively. In the main body portion 20a, a reflecting surface facing the plane mirror 21 forms a concave surface. The pair of shaft portions 20b are supported by the pair of support members 23 so as to be rotatable freely. Figure 6 The dotted line P in the figure indicates the rotation center of the concave mirror 20. The pair of support members 23 are fixed inside the lower case 40 by bolts. The rotation device 24 includes a motor, gears for transmitting the rotational force of the motor to the shaft portion 20b, and the like.

[0027] As Figure 2 shown, the display device 30 irradiates display light 10 onto the plane mirror 21. The display light 10 is reflected by the plane mirror 21, then reflected by the concave mirror 20, and transmitted through the cover member 81 to be projected onto the windshield Ws. Then, as Figure 1 shown, the display light 10 is reflected by the windshield Ws to the eyes of the driver in the driver's seat. The driver recognizes the display light 10 entering his eyes as a virtual image 90 displayed on the front side (outside the vehicle) of the windshield Ws.

[0028] The HUD device 1 can change the projection position of the display light 10 onto the windshield Ws to correspond to the eye height of the driver sitting in the driver's seat. When the driver operates an operation portion (not shown in the figure), the control section 60 drives the rotation device 24 to rotate the concave mirror 20 in response to an operation signal from the operation portion. Accordingly, the projection position of the display light 10 onto the windshield Ws is changed.

[0029] In this attachment structure 101 of the HUD device 1 to the vehicle C, in order to reduce the blurring of the virtual image caused by vibration, as Figure 2 , Figure 5 , Figure 6 and so on, a first elastic member 42, a second elastic member 43 and a third elastic member 44 are provided. They are made of materials that can be elastically compressed and elastically restored, and for example, sponge or polyurethane foam can be used.

[0030] The first elastic member (equivalent to the "elastic member") 42 is provided between the protruding portion 41 provided in the lower case 40 and the vehicle body structure 100. According to this embodiment, the first elastic member 42 is attached to the protruding portion 41, but it can also be attached to the vehicle body structure 100. The attachment method can use adhesives, tapes, etc. The first elastic member 42 is formed in a sheet shape, one surface of which is in complete contact with the protruding portion 41, and the other surface is in complete contact with the vehicle body structure 100.

[0031] The second elastic member 43 is provided between the rear surface of the concave mirror 20 (the surface not on the reflection surface side) and the inner surface of the lower case 40. According to this embodiment, the second elastic member 43 is attached to the inner surface of the lower case 40, but it can also be attached to the rear surface of the concave mirror 20. The attachment method can use adhesives, tapes, etc. The second elastic member 43 is formed in a sheet shape, one surface of which is in complete contact with the inner surface of the lower case 40, and the other surface is in complete contact with the rear surface of the concave mirror 20. Moreover, the second elastic member 43 is in contact with the inner surface of the lower case 40 and the rear surface of the concave mirror 20 throughout the entire rotatable range of the concave mirror 20 (that is, when the concave mirror 20 is in any position within the rotatable range).

[0032] The third elastic member (equivalent to the "elastic member") 44 is provided between the bracket 45 provided in the lower case 40 and the vehicle body structure 100. The third elastic member 44 is formed in a ring shape and is provided at the outer circumference of the bolt insertion hole 45a. The bolt is inserted through the bolt insertion hole 45a and then fixed to the vehicle body structure 100, so that the third elastic member 44 is in contact with the bracket 45 and the vehicle body structure 100 in a compressed state.

[0033] The first elastic member 42 and the third elastic member 44 suppress the vibration of the housing 70 relative to the vehicle C due to the influence of vibrations from the vehicle C side. That is, vibrations that are not synchronized with the vibrations of the vehicle C are suppressed from occurring on the housing 70 side. The second elastic member 43 suppresses the vibration of the concave mirror 20 relative to the housing 70 due to the influence of vibrations from the vehicle C side and the influence of the driving of the rotating device 24. Due to this, blurring of the virtual image can be reduced. In addition, the first elastic member 42 is provided near the center of gravity of the HUD device 1, which can not only reduce vibrations but also stabilize the mounting balance of the HUD device 1 mounted in the vehicle C.

[0034] In addition, regarding this attachment structure 101, the shapes and sizes of the protruding portion 41 and the elastic members 42, 43, 44, and the contact range corresponding to the vehicle body structure 100 can be adjusted, so that countermeasures against virtual image blurring can be implemented in response to changes in the vehicle. In addition, the hardness of the members in contact with the respective elastic members 42, 43, 44 is different, but by adjusting the hardness of the elastic members 42, 43, 44 respectively, countermeasures against virtual image blurring can be implemented for the members to be contacted.

[0035] Furthermore, according to this embodiment, a plurality of elastic members 42, 43, 44 are provided. However, it is sufficient to provide at least the first elastic member 42. By providing the second elastic member 43 and the third elastic member 44 in addition to the first elastic member 42, virtual image blurring can be further reduced. At the same time, the convergence of vibrations can also be accelerated by these elastic members 42, 43, 44.

[0036] It should be noted that the above embodiments only show a typical aspect of the present invention, and the present invention is not limited to these embodiments. That is, various modifications can be made without departing from the scope of the present invention. Of course, as long as these modifications still have the configuration of the present invention, they fall within the scope of the present invention.

[0037] List of Reference Numerals

[0038] 1 Head-up Display Device

[0039] 10 Display Light

[0040] 20 Concave Mirror (Reflection Member)

[0041] 21 Plane Mirror

[0042] 30 Display Device

[0043] 40 Lower Housing

[0044] 41 Protruding Portion

[0045] 42 First Elastic Member (Elastic Member)

[0046] 43 Second elastic member

[0047] 44 Third elastic member (elastic member)

[0048] 45 Bracket

[0049] 50 Upper shell

[0050] 70 Outer shell

[0051] 100 Vehicle body structure

[0052] 101 Attachment structure of head-up display device to vehicle

[0053] C Vehicle

[0054] Ws Windshield.

Claims

1. An attachment structure of a head-up display device to a vehicle, wherein, An elastic member that contacts the housing and the vehicle is disposed between the housing of the head-up display device and the vehicle.

2. The attachment structure of the head-up display device to the vehicle according to claim 1, Among them, wherein the housing includes a lower housing and an upper housing that are assembled to each other, and a protruding portion is provided in the lower housing so that the elastic member is attached to the protruding portion.

3. The attachment structure of the head-up display device to the vehicle according to claim 1, Among them, a bracket is arranged to be fixed to the vehicle with bolts, and the elastic member is arranged between the bracket and the vehicle.

4. The attachment structure of the head-up display device to the vehicle according to claim 1, Among them, the head-up display device includes: the housing; a reflection member that is supported by the housing to be rotatable freely; and a display device configured to project display light on a windshield through the reflection member, wherein a second elastic member that contacts the housing and the reflection member is disposed between the housing and the reflection member.

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