BACKGROUND
Audio-visual media is becoming increasingly popular in a variety of settings. In particular, personal video display systems can now be found in vehicles such as cars, trucks, and vans. Such video display systems can be used to display navigational information, vehicle control information, entertainment content, or virtually any other desired audio-visual media.
As audio-visual media has become more popular in vehicles, various display systems have been designed to position such displays for convenient viewing. For example, some displays have been designed for location in the back of a front passenger seat, some displays have been designed to be suspended from a vehicle ceiling, some displays have been designed to be located in the front or rear console of a vehicle, and some displays have been designed to emerge from the armrest of a vehicle seat.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view showing a display system mounted to an inwardly curving sidewall.
FIG. 2 is a top view of the display system of FIG. 1, showing a positioning assembly moving a video display into a deployed position.
FIG. 3 is a top view of the display system of FIG. 1, showing the video display swivel about a substantially vertical axis.
FIG. 4 is a side view of the display system of FIG. 1, showing the video display tilt about a substantially horizontal axis.
FIG. 5 is a close up of a curvature accommodating device of the display system of FIG. 1.
FIG. 6 is a front view of the display system of FIG. 1, showing the video display facing outward.
FIG. 7 is a front view of the display system of FIG. 1, showing the video display facing inward and showing the positioning assembly adapted to open from the left side of a frame assembly.
DETAILED DESCRIPTION
FIG. 1 schematically shows a side-view of a display system 10 mounted to an inwardly curving sidewall 12, such as an inwardly curving sidewall found in an airplane or other vehicle. Display system 10 includes a video display 14 for presenting audio-visual content, a positioning assembly 16 for moving the video display throughout a range of positions, and a frame assembly 18 for mounting the display system to the sidewall.
Video display 14 can include a liquid crystal display, plasma display, or virtually any other display with a relatively shallow form factor. The video display can be sized and shaped according to a desired use. As a nonlimiting example, the video display can include a screen having a 7 inch diagonal viewing area with a 16:9 aspect ratio and a 480×234 resolution. Of course, other screen sizes, shapes, and resolutions are within the scope of this disclosure.
Video display 14 can be positioned and secured in a stowed position in which the display is orientated substantially parallel to sidewall 12, as shown in solid lines in FIG. 1. When in the stowed position, the video display may be less exposed to potential damage and may be clear from obstructing the view of other items. For example, when mounted in an aircraft, the video display can be moved to a stowed position to help protect the video display during takeoff and landing. As explained below, display 14 can be positioned to face outward when in a stowed position, and the display can be used when in a stowed position.
Positioning assembly 16 can be configured to move the video display throughout a range of positions. In particular, the positioning assembly can move the video display into a deployed position, as shown in dashed lines in FIG. 1. Positioning assembly 16 can include one or more joints, latches, and support arms for moving the video display. In some embodiments, the positioning assembly can be configured to keep the video display substantially level throughout its full range of motion. As used herein, “level,” “horizontal,” and “vertical” refer to a perceived orientation relative to a viewer and not to an outside reference such as the earth. In the context of an airplane or other vehicle, “level” may be defined as being substantially parallel to the seat of a passenger viewing the video display. While a video display may tilt left and right relative to the earth as an airplane banks or rolls, it can remain “level” with reference to a passenger viewer that is also banking and rolling with the airplane.
When in a deployed position, the video display can be adjusted to have a desired orientation for convenient viewing. For example, in the illustrated embodiment, the positioning assembly includes an arm 20 that can pivot about a substantially vertical axis A-A. Furthermore, in the illustrated embodiment, the video display is connected to arm 20 so that the video display can swivel about a substantially vertical axis B-B and tilt about a substantially horizontal axis C-C. Therefore, the illustrated display system has three separate degrees of freedom that allow the video display to be positioned with a desired orientation. FIGS. 2-4 independently illustrate each degree of freedom.
FIG. 2 shows a top view of display system 10 in a deployed position. As indicated by arrow A, a positioning assembly 16 of the display system can be used to selectively move the video display from a stowed position to a deployed position by rotating arm 20 about axis A-A. An arm rotation joint 22 pivotably connects arm 20 to frame assembly 18 and is configured to permit rotation of arm 20 about axis A-A. In the illustrated embodiment, the orientation of arm 20 effectively controls the orientation of video display 14. When arm 20 is constrained to remain horizontal, the video display remains level. Accordingly, arm rotation joint 22 can be configured to hold arm 20 horizontal while the arm pivots. As a nonlimiting example, the arm rotation joint can be configured to pivot arm 20 throughout an arc of 120 degrees while holding the arm substantially horizontal.
As indicated by arrow B in FIG. 3, the positioning assembly can be configured to allow video display 14 to swivel about axis B-B. A display rotation joint 24 pivotably connects video display 14 to arm 20 and is configured to permit rotation of the video display about axis B-B. The ability to swivel the screen about axis B-B can facilitate squaring the video display to achieve an improved viewing angle. In particular, the video display can be swiveled to accommodate viewers having a line-of-sight to the left or right of the display. The display rotation joint can be configured to maintain a level screen orientation throughout the entire range of motion as the display pivots about axis B-B, or in other words, the joint can prevent the display from rotating about an axis that is orthogonal to axis B-B and axis C-C. As a nonlimiting example, the joint can provide for 210 degrees of swivel. As such, the display can be swiveled to face forward or backward when in a deployed position. Similarly, as explained with reference to FIGS. 6 and 7, the display can be swiveled to face inward or outward when in a stowed position.
As indicated by arrow C in FIG. 4, the positioning assembly can be configured to allow video display 14 to tilt forward and/or backward about axis C-C. A display tilt joint 26 pivotably connects video display 14 to arm 20 and is configured to permit the video display to tilt about axis C-C. The ability to tilt the screen about axis C-C can facilitate squaring the video display to achieve an improved viewing angle. In particular, the video display can be tilted to accommodate viewers having a line-of-sight above or below the display. The display tilt joint can be configured to maintain a level screen orientation throughout the entire range of motion as the display tilts about axis C-C. As a nonlimiting example, the display tilt joint can provide for 60 degrees of tilt, or more precisely, 30 degrees of forward tilt and 30 degrees of backward tilt. In some embodiments, display rotation joint 24 and display tilt joint 26 can be integrated into a compound joint that permits rotation about axis B-B and axis C-C. Such a compound joint can be configured to keep the display level.
As shown in FIG. 1, display system 10 is mounted to an inwardly curving sidewall 12. In some embodiments, frame assembly 18 of the display system may include a substantially planar rear mounting plate 28, as shown in FIG. 5. The mounting plate may have a shape that does not closely correspond to the curvature of an inwardly curving sidewall. As used herein, a “plate” is not limited to a continuous solid expanse and may include two or more discrete portions that are spaced apart from one another. When a mounting plate does not closely correspond to the shape of a sidewall to which the plate is to be mounted, one or more curvature accommodating devices 40 can be used to improve the connection between the display system and the sidewall. In particular, a curvature accommodating device can effectively serve as a shim that spans a gap between a portion of the display system, such as a mounting plate, and the sidewall. FIG. 1 shows two pivoting bars 42 and 46, which can be selectively adjusted to span such a gap at two spaced-apart locations.
FIG. 5 shows a close-up view of curvature accommodating bar 46. The curvature accommodating bar is pivotably connected to mounting plate 28 at a joint 48. A curvature accommodating device may also include an adjustment mechanism to accommodate for different amounts of curvature and/or different positioning. In the illustrated embodiment, the curvature accommodating device includes an adjustment mechanism in the form of a set screw 50, which can be set to adjust the relative extension of the curvature accommodating bar away from mounting plate 28. For example, the bar can be set further away from the mounting plate, as shown in dashed lines, to accommodate a sidewall with a tighter radius of curvature.
Display system 10 can be fastened to sidewall 12 by a variety of different mechanisms. For example, a fastener such as a screw, bolt, or dowel can be used to secure the display system to sidewall 12. When fastened to an airplane sidewall, which can include a structural service panel exterior an upholstery panel, a fastener can be used to secure the mounting plate to the service panel. In some embodiments, such a fastener can pass through an aperture in the curvature accommodating device. For example, as shown in FIGS. 2 and 3, the curvature accommodating devices can include apertures 52, through which a fastener can pass. In the illustrated embodiment, the apertures are oval shaped to allow a fastener to pass through regardless of the amount the bar is pivoted away from the mounting plate. In some embodiments, mated mounting brackets can be used to fasten the display system to a sidewall. The display system can include a shroud designed to improve the aesthetics of an installed display system.
As shown in FIG. 1, arm 20 can be configured to move in a plane that is at an oblique angle relative to the frame assembly. In particular, the arm may be at an angle φ relative to the frame assembly. In some embodiments, φ may be set at approximately 70 degrees. The frame assembly can be mounted to the sidewall so that the arm remains substantially horizontal throughout its entire range of motion. In other words, the plane through which arm 20 moves can be set by positioning the frame assembly with a given orientation, and the orientation can be selected to maintain a level arm, which in turn can maintain a level video display. To maintain a level video display, the frame assembly can be positioned at an angle α relative to a viewers vertical reference, where α=(90−φ).
An angle α can be achieved by setting the relative spacing of the curvature accommodating device(s). For example, with reference to FIG. 1, α can be increased by pivoting curvature accommodating bar 42 farther away from the mounting plate and/or pivoting curvature accommodating bar 46 closer to the mounting plate. Likewise, a can be decreased by pivoting curvature accommodating bar 42 closer to the mounting plate and/or pivoting curvature accommodating bar 46 farther away from the mounting plate. Such adjustments can permit the display system to be precisely mounted despite minor differences and/or irregularities in the sidewall to which the display system is being mounted.
As discussed above, a video display can be orientated with the screen facing inward or outward when in a stowed position. The video display can pivot about axis B-B, thus setting the orientation of the screen. FIG. 6 shows a front 14a of the video display facing outward, while FIG. 7 shows a back 14b of the video display facing outward. A video display may be orientated with the screen facing outward when the screen is used in the stowed position. Likewise, the video display may be orientated with the screen facing inward when added protection is desired.
In some embodiments, arm 20 can be selectively connected to either the left side of frame assembly 18 or the right side of frame assembly 18. FIG. 6 shows arm 20 connected to the right side of frame assembly 18. A latch assembly 60 is connected to the left side of the frame assembly. Latch assembly 60 can be used to selectively secure the video display in a stowed position. In FIG. 7, arm 20 and latch 60 have been exchanged so that arm 20 pivots from the left side of the frame assembly. This effectively allows axis A-A to be set on either the left or right side of a display system.
The ability to adapt a single display system so that arm 20 can swing from either the left side or the right side of the frame assembly increases mounting options. A single display system can be mounted on a left sidewall with arm 20 pivotably connected to the left side of frame assembly 18 or with arm 20 pivotably connected to the right side of frame assembly 18. Likewise, a single display system can be mounted on a right sidewall with arm 20 pivotably connected to the left side of frame assembly 18 or with arm 20 pivotably connected to the right side of frame assembly 18.
While described with reference to the embodiment illustrated in FIGS. 1-7, it should be understood that a display system can be differently configured while remaining within the scope of this disclosure. For example, in some embodiments, a display system may have only two axes of rotation, while in other embodiments, a display system may have four or more axes of rotation. Similarly, it should be understood that curvature accommodating bar 46 and set screw 50 are provided as a nonlimiting example of a curvature accommodating device. In some embodiments, two or more discrete curvature accommodating devices can be used in place of a single bar. Such devices can optionally be horizontally aligned and individually adjustable. Such an arrangement may provide an improved fit if a sidewall not only curves from top to bottom, but also from front to back. In some embodiments, a spring or other resilient member can be used to span at least a portion of the distance from the mounting plate to the sidewall. Similarly, a mechanism other than a set screw can be used to adjust the curvature accommodating device.
Although the present disclosure has been provided with reference to the foregoing operational principles and embodiments, it will be apparent to those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope defined in the appended claims. The present disclosure is intended to embrace all such alternatives, modifications and variances. Where the disclosure or claims recite “a,” “a first,” or “another” element, or the equivalent thereof, they should be interpreted to include one or more such elements, neither requiring nor excluding two or more such elements.
Patent Application
20050111176
