Search

EP-4737180-A1 - DISPLAY DEVICE FOR VEHICLE

EP4737180A1EP 4737180 A1EP4737180 A1EP 4737180A1EP-4737180-A1

Abstract

A display apparatus for vehicle according to embodiment of the present disclosure includes: a picture generation device including a light output device and to output projection image; a first mirror to reflect a first projection image corresponding to a portion of the projection image; a screen including one surface on which the first projection image reflected from the first mirror is projected; a second mirror to reflect a second projection image corresponding to another portion of the projection image to a windshield; and a first actuator to change position or angle of the first mirror, wherein, based on change in the position or angle of the first mirror, a size of the first projection image projected on the screen is changed. Accordingly, it is possible to change the size of a cluster display while implementing a plurality of displays in integrated manner based on a single picture generation device.

Inventors

  • Kim, Jinyong
  • JUNG, Youngho

Assignees

  • LG Electronics Inc.

Dates

Publication Date
20260506
Application Date
20240208

Claims (19)

  1. A display apparatus for a vehicle, the display apparatus comprising: a picture generation device including a light output device and configured to output a projection image; a first mirror configured to reflect a first projection image corresponding to a portion of the projection image from the picture generation device; a screen including one surface on which the first projection image reflected from the first mirror is projected; a second mirror configured to reflect a second projection image corresponding to another portion of the projection image from the picture generation device to a windshield; and a first actuator configured to change a position or an angle of the first mirror, wherein, based on a change in the position or the angle of the first mirror, a size of the first projection image projected on the screen is changed.
  2. The display apparatus of claim 1, wherein, based on a change in the position or the angle of the first mirror, a size of the second projection image reflected on the windshield is changed.
  3. The display apparatus of claim 1, further comprising a signal processing device configured to control the first actuator, wherein, based on a change in the position or the angle of the first mirror, the signal processing device is configured to change the size of the first projection image projected on the screen.
  4. The display apparatus of claim 3, wherein, based on a change in the position or the angle of the first mirror, the signal processing device is configured to change a size of the second projection image reflected on the windshield.
  5. The display apparatus of claim 3, wherein, in response to a height of a lower end of the first mirror being higher than a height of a lower end of the second mirror, the signal processing device is configured to increase the height of the lower end of the first mirror, and decrease the size of the first projection image projected on the screen.
  6. The display apparatus of claim 3, wherein, in response to a height of a lower end of the first mirror being higher than a height of a lower end of the second mirror, the signal processing device is configured to decrease the height of the lower end of the first mirror, and increase the size of the first projection image projected on the screen.
  7. The display apparatus of claim 3, wherein the signal processing device is configured to: in a multi-display mode, display the first projection image on the screen, and project and reflect the second projection image on the windshield; and in a cluster-only display mode, display the first projection image on the screen, and not project the second projection image on the windshield.
  8. The display apparatus of claim 1, wherein a size of an area in which the first projection image is incident on the first mirror in a cluster-only display mode is greater than a size of an area in which the first projection image is incident on the first mirror in a multi-display mode.
  9. The display apparatus of claim 3, wherein the signal processing device is configured to: in a multi-display mode, display the first projection image on the screen, and project and reflect the second projection image on the windshield; and in a head-up-only display mode, not project the first projection image on the screen, and project and reflect the second projection image on the windshield."
  10. The display apparatus of claim 1, wherein a size of an area in which the second projection image is incident on the second mirror in a head-up-only display mode is greater than a size of an area in which the second projection image is incident on the second mirror in a multi-display mode.
  11. The display apparatus of claim 3, further comprising a second actuator configured to adjust a height or an angle of the screen, wherein the signal processing device is configured to adjust the height of the screen.
  12. The display apparatus of claim 11, further comprising a third actuator configured to adjust a height or an angle of the second mirror, wherein, in response to an adjustment of the height of the screen, the signal processing device is configured to adjust a height or an angle of the first mirror or the second mirror."
  13. The display apparatus of claim 3, wherein, in response to a height of a lower end of the first mirror being less than a height of a lower end of the second mirror, the signal processing device is configured to decrease the height of the lower end of the first mirror, and decrease the size of the first projection image projected on the screen.
  14. The display apparatus of claim 3, wherein, in response to a height of a lower end of the first mirror being less than a height of a lower end of the second mirror, the signal processing device is configured to increase the height of the lower end of the first mirror, and increase the size of the first projection image projected on the screen.
  15. A display apparatus for a vehicle, the display apparatus comprising: a picture generation device including a light output device and configured to output a projection image; a first mirror configured to reflect a first projection image corresponding to a portion of the projection image from the picture generation device; a screen including one surface on which the first projection image reflected from the first mirror is projected; a second mirror configured to reflect a second projection image corresponding to another portion of the projection image from the picture generation device to a windshield; and a first actuator configured to change a position or an angle of the first mirror, wherein, based on a change in the position or the angle of the first mirror, a size of the first projection image projected on the screen or a size of the second projection image reflected on the windshield is changed.
  16. The display apparatus of claim 15, further comprising a signal processing device configured to control the first actuator, wherein, based on a change in the position or the angle of the first mirror, the signal processing device is configured to change the size of the first projection image projected on the screen or the size of the second projection image reflected on the windshield.
  17. The display apparatus of claim 15, wherein the signal processing device is configured to adjust a height of a lower end of the first mirror, and change the size of the first projection image projected on the screen or the size of the second projection image reflected on the windshield.
  18. The display apparatus of claim 15, wherein the signal processing device is configured to display only the first projection image on the screen, and not project the second projection image on the windshield.
  19. The display apparatus of claim 15, wherein the signal processing device is configured to display only the second projection image on the windshield, and not project the first projection image on the screen.

Description

BACKGROUND 1. Field The present disclosure relates to a display apparatus for a vehicle, and more particularly, to a display apparatus for a vehicle capable of changing the size of a cluster display while implementing a plurality of displays in an integrated manner by using a single picture generation device. 2. Description of the Related Art A vehicle is a machine that allows a user who rides therein to move in a desired direction. A representative example of the vehicle is a car. Meanwhile, for convenience of vehicle users, some vehicles are equipped with a display apparatus or device. For example, a display is positioned on an instrument cluster to present various types of information. In addition to the cluster display, in order to display vehicle driving information and the like, various displays, such as a center information display (CID) and a head-up display that outputs a projection image onto a windshield, are increasingly being mounted in vehicles. As various displays are disposed in a vehicle, methods for operating the displays in an integrated manner have been studied. Meanwhile, Japanese Laid-open Patent Publication No. 11-59224 (hereinafter referred to as "Prior Art Document 1"), which is hereby incorporated by reference, discloses a front window display device that adjusts the brightness of a head-up display (HUD) of the window display device based on data of an illuminance sensor. However, in Prior Art Document 1, only the window display device is disclosed, and thus it has a limitation in that integrated operation of various displays is difficult. Meanwhile, U.S. Patent Publication No. US10298890 (hereinafter referred to as "Prior Art Document 2"), which is hereby incorporated by reference, discloses a vehicle display device that projects an image using a cluster display. However, in Prior Art Document 2, only the cluster display is disclosed, and thus it has a limitation in that integrated operation of various displays is difficult. SUMMARY It is an object of the present disclosure to provide a display apparatus for a vehicle capable of changing the size of a cluster display while implementing a plurality of displays in an integrated manner by using a single picture generation device. It is another object of the present disclosure to provide a display apparatus for a vehicle capable of changing the size of a head-up display while implementing a plurality of displays in an integrated manner by using a single picture generation device. In accordance with an aspect of the present disclosure, the above and other objects can be accomplished by providing a display apparatus for a vehicle including: a picture generation device including a light output device and configured to output a projection image; a first mirror configured to reflect a first projection image corresponding to a portion of the projection image from the picture generation device; a screen including one surface on which the first projection image reflected from the first mirror is projected; a second mirror configured to reflect a second projection image corresponding to another portion of the projection image from the picture generation device to a windshield; and a first actuator configured to change a position or an angle of the first mirror. Based on a change in the position or the angle of the first mirror, a size of the first projection image projected on the screen is changed. Based on a change in the position or the angle of the first mirror, a size of the second projection image reflected on the windshield can be changed. The display apparatus can further include a signal processing device configured to control the first actuator. Based on a change in the position or the angle of the first mirror, the signal processing device can be configured to change the size of the first projection image projected on the screen. Based on a change in the position or the angle of the first mirror, the signal processing device can be configured to change a size of the second projection image reflected on the windshield. In response to a height of a lower end of the first mirror being higher than a height of a lower end of the second mirror, the signal processing device can be configured to increase the height of the lower end of the first mirror, and decrease the size of the first projection image projected on the screen. In response to a height of a lower end of the first mirror being higher than a height of a lower end of the second mirror, the signal processing device can be configured to decrease the height of the lower end of the first mirror, and increase the size of the first projection image projected on the screen. In a multi-display mode, the signal processing device can be configured to the first projection image is displayed on the screen, and project and reflect the second projection image on the windshield. In a cluster-only display mode, the signal processing device can be configured to the first projection image is dis