DISPLAY DEVICE PROVIDED WITH A LIGHT GUIDE

• US 20150301270A1
• Filed: 08/26/2013
• Published: 10/22/2015
• Est. Priority Date: 08/30/2012
• Status: Abandoned Application

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: MOLARD, YANNICK, CORDIER, EMMANUEL
• Application Number:
  US14/424,050
• Publication Number:
  US 20150301270A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 2360/1438 Touch screens
• CPC Class Codes: B60K 2360/33 Illumination features
• CPC Class Codes: B60K 2360/336 Light guides
• CPC Class Codes: B60K 2360/693 Cover plate features
• CPC Class Codes: B60K 2370/1438 Touch screens
• CPC Class Codes: B60K 2370/336 Light guides
• CPC Class Codes: B60K 2370/693 Cover plate features
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/10 Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
• CPC Class Codes: B60K 35/22 Display screens
• CPC Class Codes: G02B 6/0018 Redirecting means on the surface of the light guide
• CPC Class Codes: G02B 6/0045 by shaping at least a portion of the light guide
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A display device that includes a housing in which is arranged a display within a display window delimited by a peripheral edge. The housing is provided with at least one light guide associated with at least one light source. The light guide includes a first portion which is arranged outside the peripheral edge and which produces a lateral illuminating beam outside the peripheral edge, and a second portion which extends as an extension of the first portion into the display window, and which produces an auxiliary illuminating beam in the display window.

Claims

1. A display device suitable for use in an automobile vehicle, said display device comprising:

a housing that defines a display window delimited by a peripheral edge;

a display arranged within the display window; and

at least one light guide associated with at least one light source, wherein the light guide includes

a first portion which is arranged outside the peripheral edge and which produces a lateral illuminating beam outside the peripheral edge, and

a second portion which extends as an extension of the first portion into the display window, and which produces an auxiliary illuminating beam in the display window, wherein the second portion of the light guide extends between the display window and the display.

2. The display device according to claim 1, wherein the light guide is produced by molding with the adjacent wall of the housing.

3. The display device according to claim 1, wherein the housing comprises a lateral window which is separate from the display window, and in that at least a part of the first portion of the light guide is arranged proximate to the lateral window so as to emit the lateral illuminating beam through the lateral window.

4. The display device according to claim 3, wherein the lateral window has an elongate shape which extends substantially parallel to the adjacent edge of the display window.

5. The display device according to claim 3, wherein the lateral window comprises a device for the detection of touch so as to constitute a touch-controlled switch.

6. The display device according to claim 1, wherein each portion of the light guide comprises rough surfaces provided for producing the corresponding illuminating beam.

7. The display device according to claim 1, wherein the thickness of the second portion of the light guide decreases progressively with the distance from the peripheral edge.

8. The display device according to claim 1, wherein a printed circuit board is arranged in the housing and in that the light source consists of a light-emitting diode which is mounted on the printed circuit board.

9. The display device according to claim 1, wherein the display zone of the display is substantially equal to the area of the display window, so that the lateral illuminating beam is emitted outside said display zone.

10. The display device according to claim 1, wherein the display device comprises at least two light guides which are arranged symmetrically on either side of the display.