Mounting structure of head-up display device to vehicle

Abstract

To provide a mounting structure of a head-up display device to a vehicle capable of reducing displacement of a virtual image due to vibration.SOLUTION: An HUD device 1 includes a casing 70, a display 30, a plane mirror 21, a concave mirror 20 and a control section 60. The concave mirror 20 is rotatably supported by the casing 70. In a mounting structure 101 of the HUD device 1 to a vehicle, a first elastic member 42 and a second elastic member 43 are provided to reduce displacement of a virtual image due to vibration. The first elastic member 42 is provided between a projection part 41 provided in the casing 70 and a vehicle body structure 100. The second elastic member 43 is provided between a rear surface (surface on a side that is not a reflection surface) of the concave mirror 20 and an inner surface of the casing 70.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a mounting structure for a head-up display device to a vehicle. [Background technology]

[0002] A head-up display device is known that is attached to a vehicle and projects light from a display onto the windshield to show the driver vehicle driving information, etc. as a virtual image in front of the windshield (outside the vehicle) (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-60690 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional head-up display devices can cause vibrations (vibrations not synchronized with the vehicle's vibrations) due to looseness in the mounting structure, which can cause blurring of the virtual image displayed. When virtual image blurring occurs, the vehicle driving information displayed in the virtual image cannot be read accurately, which can interfere with the driver's driving.

[0005] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, an object of the present invention is to provide a mounting structure for a head-up display device in a vehicle that can reduce virtual image blur caused by vibration. [Means for solving the problem]

[0006] The present invention is a mounting structure for a head-up display device to a vehicle, characterized in that an elastic member is provided between a housing of the head-up display device and the vehicle, in contact with both. Effect of the Invention

[0007] According to the present invention, it is possible to suppress the occurrence of vibrations in the head-up display device that are not synchronized with the vibrations of the vehicle, and to reduce virtual image blurring. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic diagram for explaining a mounting manner of a head-up display device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing a mounting structure of the head-up display device of FIG. 1 to a vehicle. [Diagram 3] FIG. 3 is a perspective view of the head-up display device of FIG. 2. [Figure 4] 4 is a perspective view of the head-up display device of FIG. 3 as viewed from a different angle. [Diagram 5] 5 is an explanatory diagram for explaining a mounting structure of the head-up display device of FIG. 4 to a vehicle. FIG. [Figure 6] FIG. 6 is an exploded view of the head-up display device of FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A mounting structure for a head-up display device in a vehicle according to one embodiment of the present invention will be described with reference to FIGS.

[0010] Fig. 1 is a schematic diagram for explaining a mounting state of a head-up display device (hereinafter, referred to as "HUD device") 1 according to one embodiment of the present invention. As shown in Fig. 1, the HUD device 1 is housed inside an instrument panel of a vehicle C, and projects display light 10 onto a windshield Ws to display vehicle driving information and the like to a driver as a virtual image 90 in front of the windshield Ws (on the vehicle exterior side).

[0011] Fig. 2 is a schematic diagram showing a mounting structure 101 for mounting the HUD device 1 of Fig. 1 to a vehicle C. Reference numeral 100 in Fig. 2 denotes a vehicle body structure inside an instrument panel. Figs. 3 to 5 are external views of the HUD device 1, and Fig. 6 is an exploded view of the HUD device 1.

[0012] As shown in Fig. 2, the HUD device 1 includes a housing 70, a display 30, a plane mirror 21, a concave mirror (corresponding to a "reflective member") 20, and a control unit 60. As shown in Fig. 6, the HUD device 1 includes a pair of support members 23 that rotatably support the concave mirror 20, and a rotation means 24 that applies a rotational force to the concave mirror 20. The display 30 can be, for example, a liquid crystal display. The control unit 60 controls the display 30 and the rotation means 24.

[0013] 3 to 5, the housing 70 includes a lower case 40 and an upper case 50 assembled together, and a cover material 81 that covers an opening 80 formed in the upper case 50. When 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-blocking synthetic resin, and the cover material 81 is made of a light-transmitting synthetic resin.

[0014] The lower case 40 is provided with a plurality of brackets 45 that are bolted to the vehicle body structure 100. Reference numeral 45a in Fig. 6 denotes a bolt insertion hole. The lower case 40 is also provided with a protruding portion 41 that protrudes downward in a pillar-like shape.

[0015] The display 30, the flat mirror 21, and the control unit 60 are housed in and fixed to the housing 70. A part of the display 30 is located outside the lower case 40. The concave mirror 20 is housed in the housing 70, and is rotatably supported by the lower case 40 via the pair of support members 23.

[0016] The concave mirror 20 will be described in more detail. The concave mirror 20 has a rectangular plate-shaped main body 20a and a pair of shafts 20b protruding from both ends of the main body 20a. The main body 20a has a concave reflecting surface facing the plane mirror 21. The pair of shafts 20b are rotatably supported by a pair of support members 23. A dashed line P in FIG. 6 indicates the center of rotation of the concave mirror 20. The pair of support members 23 are fixed by bolts inside the lower case 40. The rotation means 24 includes a motor, a gear that transmits the rotational force of the motor to the shafts 20b, and the like.

[0017] As shown in Fig. 2, the display device 30 emits display light 10 toward the flat mirror 21. After being reflected by the flat mirror 21, the display light 10 is reflected by the concave mirror 20, passes through the cover material 81, and is projected onto the windshield Ws of the vehicle C. Then, as shown in Fig. 1, the display light 10 reflected by the windshield Ws heads toward the eyes of the driver in the driver's seat. The driver recognizes the display light 10 that has entered his eyes as a virtual image 90 displayed in front of the windshield Ws (on the outside of the vehicle).

[0018] This HUD device 1 can change the projection position of the display light 10 onto the windshield Ws depending on the line of sight of the driver seated in the driver's seat. When the driver operates an operation unit (not shown), the control unit 60 drives the rotation means 24 in response to an operation signal from the operation unit, thereby rotating the concave mirror 20. This changes the projection position of the display light 10 onto the windshield Ws.

[0019] In such a mounting structure 101 for mounting the HUD device 1 to the vehicle C, in order to reduce virtual image blur caused by vibration, a first elastic member 42, a second elastic member 43, and a third elastic member 44 are provided as shown in Figures 2, 5, 6, etc. These are made of a material that can be elastically compressed and restored, and for example, sponge, urethane foam, etc. can be used.

[0020] The first elastic member (corresponding to "elastic member") 42 is provided between the protrusion 41 provided on the lower case 40 and the vehicle body structure 100. In this example, the first elastic member 42 is attached to the protrusion 41, but it may also be attached to the vehicle body structure 100. The attachment means may be an adhesive, an adhesive tape, or the like. The first elastic member 42 is formed in a sheet shape, with the entire area of ​​one surface in contact with the protrusion 41 and the entire area of ​​the other surface in contact with the vehicle body structure 100.

[0021] The second elastic member 43 is provided between the rear surface (non-reflective surface) of the concave mirror 20 and the inner surface of the lower case 40. In this example, the second elastic member 43 is attached to the inner surface of the lower case 40, but may be attached to the rear surface of the concave mirror 20. The attachment means may be an adhesive, an adhesive tape, or the like. The second elastic member 43 is formed in a sheet shape, and the entire area of ​​one surface is in contact with the inner surface of the lower case 40, and the entire area of ​​the other surface is in contact with the rear surface of the concave mirror 20. 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 (i.e., regardless of where the concave mirror 20 is located within the rotatable range).

[0022] The third elastic member (corresponding to "elastic member") 44 is provided between a bracket 45 provided on the lower case 40 and the vehicle body structure 100. The third elastic member 44 is formed in an annular shape and is positioned on the outer periphery of the bolt insertion hole 45a. When a bolt is passed through the bolt insertion hole 45a and fastened to the vehicle body structure 100, the third elastic member 44 is in a compressed state and contacts the bracket 45 and the vehicle body structure 100.

[0023] The first elastic member 42 and the third elastic member 44 suppress the housing 70 from vibrating relative to the vehicle C due to the influence of vibrations from the vehicle C side. In other words, they suppress the occurrence of vibrations on the housing 70 side that are not synchronized with the vibrations of the vehicle C. The second elastic member 43 suppresses the concave mirror 20 from vibrating relative to the housing 70 due to the influence of vibrations from the vehicle C side and the influence of the driving of the rotation means 24. As a result, virtual image blurring can be reduced. In addition, the first elastic member 42 is provided near the center of gravity of the HUD device 1, which not only reduces vibrations but also stabilizes the installation balance of the HUD device 1 mounted on the vehicle C.

[0024] Furthermore, this mounting structure 101 can adjust the shape, size, contact range, etc. of the protrusion 41 and the elastic members 42, 43, 44 to match the vehicle body structure 100, making it possible to implement measures against virtual image blur in a wide range of vehicles. Although the parts that come into contact with each of the elastic members 42, 43, 44 have different hardnesses, by adjusting the hardness of each of the elastic members 42, 43, 44, it is possible to design measures against virtual image blur that match the parts that they come into contact with.

[0025] In this example, a plurality of elastic members 42, 43, and 44 are provided, but 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, it is possible to further reduce virtual image blurring, and at the same time, these elastic members 42, 43, and 44 can hasten vibration convergence.

[0026] The above-described embodiment merely shows a typical form of the present invention, and the present invention is not limited to this embodiment. In other words, the present invention can be embodied in various modifications without departing from the gist of the present invention. As long as the configuration of the present invention is still provided even with such modifications, it is of course included in the scope of the present invention. [Explanation of symbols]

[0027] 1 Head-up display device 10 display light 20 Concave mirror (reflective material) 21 Plane Mirror 30 Display 40 Lower Case 41 Protrusion 42 First elastic member (elastic member) 43 Second elastic member 44 Third elastic member (elastic member) 45 Bracket 50 Upper Case 70 Case 100 Body structure 101 Head-up display device mounting structure for vehicle C Vehicle Ws Windshield

Claims

1. A mounting structure for a head-up display device to a vehicle, An elastic member is provided between the housing of the head-up display device and the vehicle, the elastic member being in contact with the housing and the vehicle. A structure for mounting a head-up display device to a vehicle.

2. The housing includes a lower case and an upper case assembled together, A protrusion is provided on the lower case, and the elastic member is attached to the protrusion.

2. The head-up display device according to claim 1, wherein the head-up display device is mounted on a vehicle.

3. a bracket that is bolted to the vehicle is provided on the housing; The elastic member is provided between the bracket and the vehicle.

2. The head-up display device according to claim 1, wherein the head-up display device is mounted on a vehicle.

4. The head-up display device, The housing; A reflecting member rotatably supported by the housing; a display that projects display light onto a windshield of the vehicle through the reflective member, A second elastic member is provided between the housing and the reflecting member in contact with them.

2. The head-up display device according to claim 1, wherein the head-up display device is mounted on a vehicle.

Images