JP2019182224A - Housing structure of head-up display device - Google Patents

Abstract

To provide a housing structure of a head-up display device which achieves improvement of workability of component attachment.SOLUTION: A housing structure of a head-up display device 2 includes a housing 30 which comprises an upper case 50 and a lower case 40 and in which multiple components are housed. In the housing structure, mating parts 43, 53 of the upper case 50 and the lower case 40 have first edge parts 43a, 53a located at a predetermined height from a bottom part of the lower case 40; and second edge parts 43b, 53b located higher than the first edge parts 43a, 53a from the bottom part of the lower case 40.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a housing structure of a head-up display device.

  Conventionally, in a head-up display device, a plurality of members are disposed in a housing composed of an upper case and a lower case (see, for example, Patent Document 1).

  In Patent Document 1, an upper case and a lower case are combined to form a box-shaped housing, and this casing uses a display unit that emits display light and display light from the display unit as a translucent member. The structure which accommodates the reflective part which reflects is disclosed.

JP 2017-171041 A

  However, in the housing structure described in Patent Document 1, the mating surfaces on which the upper case and the lower case are brought into contact with each other are formed on one plane. Therefore, in the housing structure described in Patent Document 1, in order to protect the components housed in the housing, it is necessary to set a mating surface in accordance with the highest height components. There is a problem that workability at the time of attachment deteriorates.

  Accordingly, an object of the present invention is to provide a housing structure of a head-up display device that improves the mounting workability of components.

  In order to achieve the above object, a housing structure of a head-up display device according to the present invention includes an upper case and a lower case, and includes a housing that accommodates a plurality of components, and the upper case and the lower case are aligned. The portion includes a first edge having a predetermined height from the bottom of the lower case, and a second edge higher than the first edge from the bottom of the lower case.

  The casing structure of the head-up display device of the present invention configured as described above can improve the mounting workability of components.

It is a side view which shows the state which mounted the head up display apparatus of Example 1 in the vehicle. It is a perspective view which simplifies and shows the components accommodated in the housing of the head-up display apparatus of Example 1. FIG. It is a perspective view which shows the structure of the housing of the head-up display apparatus of Example 1. FIG. It is a side view which shows the structure of the housing of the head-up display apparatus of Example 1. FIG. It is sectional drawing which shows the lower case and the components accommodated in the head-up display apparatus of Example 1. It is a perspective view which simplifies and shows the lower case and the components accommodated in the head-up display device of Example 1.

  Hereinafter, an embodiment for realizing a housing structure of a head-up display device according to the present invention will be described based on Example 1.

  The casing structure of the head-up display device according to the first embodiment is applied to a head-up display device provided in an instrument panel in a vehicle interior of a vehicle such as an automobile.

[Configuration of head-up display device]
FIG. 1 is a side view illustrating a state in which the head-up display device according to the first embodiment is mounted on a vehicle. FIG. 2 is a simplified perspective view showing components housed in the housing of the head-up display device according to the first embodiment. Hereinafter, the configuration of the head-up display device according to the first embodiment will be described with reference to FIGS. 1 and 2.

  In addition, about a direction, it demonstrates on the basis of the state which mounted the head-up display apparatus 2 in the vehicle 1. FIG. The vehicle front-rear direction X is substantially the front-rear direction or the depth direction of the head-up display device 2. The vehicle width direction Y is substantially the width direction of the head-up display device 2. The vertical direction Z of the vehicle 1 is substantially the vertical direction of the head-up display device 2. However, since the head-up display device 2 may be mounted on the vehicle 1 in an inclined state, these directions may be shifted to some extent.

  The head-up display device 2 causes the occupant 7 who is driving facing the front to visually recognize the driving information 3 without causing a large line of sight movement. The head-up display device 2 is installed inside an instrument panel 12 provided at the front of the passenger compartment 1a.

  The head-up display device 2 includes a display device 4 that can display driving information 3, a reflecting member 6 that reflects the driving information (display image) 3 from the display device 4 toward the front of the passenger compartment 1a, and a dust-proof cover 15. And a housing 30 that accommodates the display device 4 and the reflection member 6 therein.

  Openings 13 and 14 through which the operation information 3 passes are provided on the upper surface of the housing 30 and the upper surface of the instrument panel 12. A transparent or translucent dustproof cover 15 is installed in at least one of the openings 13 and 14. The dust cover 15 may be provided so as to be openable and closable with respect to the openings 13 and 14. The dust cover 15 has a concave shape that is recessed downward when viewed from the side, and prevents the dust cover 15 from being reflected on the front window 16. The dust cover 15 may be flat.

  The driving information 3 that has passed through the openings 13 and 14 is reflected as a virtual image 18 by the occupant 7 by being reflected by the front window 16 as display means. The operation information 3 may be reflected on a reflector (referred to as a combiner) as dedicated display means installed on the front side of the openings 13 and 14. In order to reflect the driving information 3, the front window 16 is provided with a reflective film, a fine reflecting surface, etc. at least in a required range where the driving information 3 is projected.

  Driving information 3 is general information for driving assistance. The driving information 3 includes, for example, speed information, road information (for example, lane display, preceding vehicle display, oncoming vehicle display, pedestrian display, obstacle display, etc.), route information (for example, intersection information) ), Destination information (such as arrival time and distance to the destination), traffic information, service information (such as parking lot information, gas station information, and surrounding facility information) And other displays.

  The display device 4 can be a liquid crystal panel. On the back side of the liquid crystal panel, an illumination device 4a serving as a backlight is provided. The display device 4 may be a projector using a DLP unit that reflects laser light or LED irradiation light with a micromirror. The display device 4 can also be an organic EL panel or the like. The operation information 3 of the display device 4 is controlled by the control unit 4b.

  The passenger compartment 1a is a space in which the occupant 7 in the vehicle 1 is boarded. The reflecting member 6 is an optical component such as a reflecting mirror, and is a flat mirror that reflects the operation information 3 from the display device 4 at an equal magnification, a curved mirror that reflects the enlarged information (concave mirror), or the like. Two reflection members 6 are provided in the vehicle longitudinal direction X. Note that a single reflection member 6 or a plurality of reflection members 6 may be provided.

  One reflecting member 6 </ b> A is directly fixed to the inside of the housing 30 behind the housing 30 in the vehicle longitudinal direction X. The other reflecting member 6 </ b> B is installed in front of the housing 30 in the vehicle longitudinal direction X so as to be rotated by the support structure 20.

  As shown in FIG. 2, the support structure 20 supports the reflecting member 6B so as to be rotatable. The reflecting member 6 </ b> B supported by the support structure 20 is automatically rotated by the movable mechanism 25.

  The movable mechanism 25 includes an arm portion 26 and an attachment bracket 28 to which an actuator that rotates the reflecting member 6B via the arm portion 26 is attached. The movable mechanism 25 may be a link mechanism. In this case, the arm part 26 is moved by an actuator such as a cylinder.

  A motor is used for the actuator. The actuator is fixed to the housing 30 via the mounting bracket 28.

[Configuration of the housing of the head-up display device]
FIG. 3 is a perspective view illustrating a configuration of the housing 30 of the head-up display device 2 according to the first embodiment. FIG. 4 is a side view illustrating the configuration of the housing 30 of the head-up display device 2 according to the first embodiment. FIG. 5 is a cross-sectional view illustrating components housed in the lower case 40 of the head-up display device 2 according to the first embodiment. FIG. 6 is a perspective view schematically showing the lower case 40 and components housed in the head-up display device of the first embodiment. Hereinafter, based on FIGS. 3-6 (especially FIG. 5), the structure of the housing 30 of the head-up display apparatus 2 of Example 1 is demonstrated.

  The housing 30 of the head-up display device 2 includes a lower case 40 and an upper case 50, as shown in FIGS.

  As shown in FIG. 5, the lower case 40 is made of, for example, aluminum die-casting, and includes a bottom portion 41 and a side wall 42 that rises from an edge of the bottom portion 41, and is formed in a box shape having an upper opening. By making the lower case 40 made of aluminum die cast, the lower case 40 has heat resistance and heat dissipation.

  The bottom 41 is formed below the first bottom 41a, the second bottom 41b formed above the first bottom 41a, the third bottom 41c formed above the second bottom 41b, and below the first bottom 41a. The fourth bottom 41d is provided. The movable mechanism 25 is disposed on the second bottom 41b. The support structure 20 is disposed on the third bottom portion 41c, and the reflection member 6B is supported by the support structure 20. The display device 4 is disposed on the fourth bottom 41d.

  The upper case 50 is formed of a material having a lighter specific gravity than the lower case 40 (in the first embodiment, it is made of resin). The upper case 50 is composed of a side wall 52 and is formed in a substantially cylindrical shape with an upper and lower opening. The opening above the upper case 50 becomes the opening 14 in which the dustproof cover 15 is installed.

  An upper end (edge) on the upper side of the side wall 42 of the lower case 40 is configured as a mating portion 43 that mates with the upper case 50. The lower end (edge) of the lower side wall 52 of the upper case 50 is configured as a mating portion 53 that meets the lower case 40. As shown in FIG. 3, the upper case 50 is attached to the lower case 40 with a plurality of screws 91 such that the matching portion 53 of the upper case 50 and the matching portion 43 of the lower case 40 are combined.

  As shown in FIGS. 4 and 5, the mating parts 43 and 53 are composed of first edge parts 43 a and 53 a, second edge parts 43 b and 53 b, and third edge parts 43 c and 53 c, Form.

(First edge 43a, 53a)
The first edge portions 43 a and 53 a are formed on the rear side of the head-up display device 2 in the vehicle longitudinal direction X. The first edge portions 43a and 53a are formed at a predetermined height H1 from the first bottom portion 41a of the lower case 40. The first edge portions 43 a and 53 a are disposed slightly above the rotation axis of the actuator attached to the attachment bracket 28. The first edge 43a of the lower case 40 is formed at the tip of the side wall 42a that forms the first edge 43a. The first edge 53a of the upper case 50 is formed at the tip of the side wall 52a that forms the first edge 53a.

  A flange 44 is formed on the first edge 43 a of the lower case 40. A flange 54 is formed on the first edge 53 a of the upper case 50.

(Second edge 43b, 53b)
The second edge portions 43 b and 53 b are formed on the front side of the head-up display device 2 in the vehicle longitudinal direction X. The side wall 42b that forms the second edge 43b of the lower case 40 surrounds the back surface 6a and both side surfaces 6b of the reflecting member 6B (see FIG. 6). The second edge portions 43b and 53b are formed from the first bottom portion 41a of the lower case 40 at a height H2 higher than the height H1. The second edge portions 43b and 53b are formed lower than the height of the upper portion of the reflecting member 6B attached to the lower case 40. That is, the reflecting member 6B is provided in a state in which a part of the reflecting member 6B protrudes upward from the second edge portions 43b and 53b.

  The second edge 43b of the lower case 40 is an end surface of the side wall 42b that forms the second edge 43b. The second edge portion 53b of the upper case 50 becomes an end surface of the side wall 52b that forms the second edge portion 53b. That is, the width of the first edge portions 43a and 53a having the flange 44 is formed wider than the width of the second edge portions 43b and 53b having no flange.

(Third edge 43c, 53c)
The third edge portions 43c and 53c are formed as inclined surfaces so as to connect the first edge portions 43a and 53a and the second edge portions 43b and 53b. The third edge portions 43c and 53c may be vertical surfaces. The third edge 43c of the lower case 40 is formed at the tip of the side wall 42c that forms the third edge 43c. The third edge 53c of the upper case 50 is formed at the tip of the side wall 52c that forms the third edge 53c.

  The third edge 43c of the lower case 40 is an end surface of the side wall 42c that forms the third edge 43c. The third edge 53c of the upper case 50 becomes an end surface of the side wall 52c that forms the third edge 53c.

  The first edge portion 53a, the second edge portion 53b, and the third edge portion 53c of the upper case 50 are aligned with the first edge portion 43a, the second edge portion 43b, and the third edge portion 43c of the lower case 40. In this state, the upper case 50 is attached to the lower case 40 by screws 91 (see FIG. 3).

  Next, the operation of the housing structure of the head-up display device 2 according to the first embodiment will be described. In the case structure of the head-up display device 2 according to the first embodiment, the case structure includes the upper case 50 and the lower case 40 and accommodates a plurality of components (display device 4, reflection member 6, support structure 20, movable mechanism 25). 30, the matching portions 43 and 53 of the upper case 50 and the lower case 40 are first edge portions 43 a and 53 a having a predetermined height from the bottom portion 41 of the lower case 40, and first portions from the bottom portion 41 of the lower case 40. It has 2nd edge part 43b, 53b higher than edge part 43a, 53a (FIG. 5).

  Thereby, the position of the mating portion can be set in accordance with each component (display device 4, reflecting member 6, support structure 20, movable mechanism 25) accommodated in housing 30. Therefore, when attaching each component (display device 4, reflecting member 6, support structure 20, movable mechanism 25) to lower case 40, side wall 42 of lower case 40 does not get in the way. Then, the operator does not interfere with the side wall 42 of the lower case 40 with a finger or the like that has gripped each component (the display device 4, the reflection member 6, the support structure 20, and the movable mechanism 25). Can be attached to. As a result, the workability of attaching each component to the lower case 40 can be improved.

  In the housing structure of the head-up display device 2 according to the first embodiment, the lower case 40 is formed of a material (aluminum) having a specific gravity heavier than that of the upper case 50 (FIG. 5).

  As a result, the position of the mating portion of the lower case 40 having a higher specific gravity than the upper case 50 is the highest among the components (display device 4, reflecting member 6, support structure 20, movable mechanism 25) accommodated in the housing 30. There is no need to set to match certain parts. As a result, it is possible to reduce the weight of the lower case 40, which has a higher specific gravity than the upper case 50, and to reduce the influence of vibration associated with traveling of the vehicle.

  By the way, in the head-up display device 2 provided inside the instrument panel 12, the reflecting member 6 is provided above the display device 4, and the driving information 3 emitted from the display device 4 is reflected toward the front window 16. Like to do. Therefore, when the upper case and the lower case are combined and abutting portions that are in contact with each other are formed on the same plane, in order to protect the reflecting member 6 by the lower case 40, the matching portion is set according to the position of the reflecting member 6. There is a need. As a result, there is a problem that the volume of the lower case 40 having a higher specific gravity than the upper case 50 is increased, and the weight of the head-up display device 2 is increased.

  On the other hand, in the case structure of the head-up display device 2 according to the first embodiment, the components housed in the case 30 direct the display image (display information 3) from the display device 4 to the display means (front window 16). The side wall 42b including the rotatable reflecting member 6 that reflects and forms the second edge 43b surrounds the back surface 6a and both side surfaces 6b of the reflecting member 6 (FIG. 5).

  Thereby, the reflection member 6 installed above other components (the display device 4, the support structure 20, and the movable mechanism 25) installed in the lower case 40 is a side wall constituting the second edge 43b of the lower case 40. It is protected by 42b. On the other hand, the components (display device 4, support structure 20, movable mechanism 25) installed below the reflecting member 6 are surrounded and protected by the side wall 42a constituting the first edge 43a of the lower case 40. Therefore, the weight of the lower case 40 having a high specific gravity can be reduced, and the influence of vibration associated with the traveling of the vehicle 1 can be reduced.

  In the housing structure of the head-up display device 2 of Example 1, the reflecting member 6 is provided in a state where a part of the reflecting member 6 protrudes upward from the second edge portions 43b and 53b (FIG. 5).

  Thereby, in a state where the reflecting member 6 is attached to the lower case 40, the operator can grasp a portion protruding upward from the second edge portions 43b and 53b. Therefore, the reflection member 6 can be easily attached. Furthermore, the attachment angle of the reflection member 6 can be easily adjusted in a state where the reflection member 6 is attached to the lower case 40.

  By the way, if the material of a part is different, the shape accuracy of the part is also different. For this reason, when parts of different materials are combined, there is a problem that the accuracy of the alignment part is deteriorated and a hitting sound is generated due to vibration accompanying the traveling of the vehicle 1.

  On the other hand, in the case structure of the head-up display device 2 according to the first embodiment, the first edges 43a and 53a are formed wider than the second edges 43b and 53b (FIG. 5).

  As a result, the upper case 50 is firmly fixed to the lower case 40 at the first edge portion, and variations in the shape accuracy of the upper case 50 and the lower case 40 are absorbed by the second edge portions 43b and 53b. Therefore, it is possible to prevent a hitting sound generated between the lower case 40 and the upper case 50 due to the vibration of the head-up display device 2 as the vehicle 1 travels.

  The housing structure of the head-up display device of the present invention has been described based on the first and second embodiments. However, the specific configuration is not limited to these embodiments, and design changes and additions are permitted without departing from the spirit of the invention according to each claim of the claims.

  In the first and second embodiments, the lower case 40 is made of aluminum die cast, and the upper case 50 is made of resin. However, the present invention is not limited to this aspect, and it is sufficient that the specific gravity of the lower case is heavier than that of the upper case.

  In the first and second embodiments, the present invention is applied to the head-up display device 2 that displays the virtual image 18 of the driving information 3 on the front window 16. However, the present invention can be applied to a head-up display device that reflects the virtual image 18 of the operation information 3 to a dedicated reflector installed in front of the openings 13 and 14.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Head-up display apparatus 3 Display information (an example of a display image)
4 Display device 6 Reflecting member 16 Front window (an example of display means)
30 housing 40 lower case 41 bottom 43a first edge 50 upper case 53a second edge

Claims (5)

It is composed of an upper case and a lower case, and includes a housing that accommodates a plurality of parts.
The mating portion of the upper case and the lower case has a first edge portion having a predetermined height from the bottom portion of the lower case, and a second edge portion that is higher than the first edge portion from the bottom portion of the lower case. A housing structure for a head-up display device. The casing structure of the head-up display device according to claim 1, wherein the lower case is formed of a material having a specific gravity heavier than that of the upper case. The component housed in the housing includes a rotatable reflecting member that reflects a display image from a display device toward a display unit,
The frame structure of the head-up display device according to claim 1, wherein the side wall forming the second edge portion surrounds the back surface and both side surfaces of the reflecting member. The casing structure of the head-up display device according to claim 3, wherein the reflecting member is provided in a state in which a part of the reflecting member protrudes upward from the second edge portion. The casing structure of the head-up display device according to any one of claims 1 to 4, wherein a width of the first edge portion is wider than a width of the second edge portion.