Illuminated push button display

• US 5,703,625 A
• Filed: 10/10/1996
• Issued: 12/30/1997
• Est. Priority Date: 01/06/1995
• Status: Expired due to Fees

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delco Electronics Corporation (Motors Liquidation Co. GUC Trust)
• Inventors: Snider, Chris Ralph, Osman, Kerwin Craig
• Primary Examiner(s): Powell, Mark R.
• Assistant Examiner(s): Luu, Matthew
• Application Number:
  US08/728,578
• Time in Patent Office: 446 Days
• Field of Search: 345/168, 345/170, 345/102, 345/172, 345/184
• US Class Current: 345/168
• CPC Class Codes: B60Q 3/14 lighting through the surface to be illuminated
• CPC Class Codes: B60Q 3/64 for a single lighting device
• CPC Class Codes: H01H 2233/004 One molded part

Abstract

A graphic display is provided which is suitable for use in an instrument panel of an automobile. The graphic display includes a display lens and a number of backlit buttons which are formed by a unitary optically-conductive member, wherein both the display lens and the backlit buttons are illuminated by a single illuminated display located behind the unitary member. As such, the unitary member eliminates the requirement for a separately formed lens and buttons. Furthermore, the illuminated display generates graphics for both the display lens and the buttons, eliminating the requirement for insignia formed in the surface of the buttons and lights or light pipes behind the buttons for backlighting the buttons.

Claims

1. An integral member for a backlit graphic display, the integral member being a unitary integrally-formed body of an optically conductive material, the integrally-formed body comprising an integrally-formed lens member and an integrally-formed button member cantilevered from the lens member by a hinge integrally formed with the lens member and button member, the button member being rotatably coupled to the lens member with the hinge so as to rotate relative to the lens member about an axis defined by the hinge.

2. An integral member as recited in claim 1 wherein the integral member comprises at least two button members cantilevered from opposite edges of the lens member, such that the lens member is between the at least two button members.

3. An integral member as recited in claim 1 wherein a distal end of the button member forms an actuator.

4. An integral member as recited in claim 1 wherein the button member is substantially coplanar with the lens member.

5. An integral member as recited in claim 1 wherein the lens member is an optic filter.

6. A backlit graphic display comprising:

an illuminated display for generating graphics;

a switch disposed adjacent the illuminated display;

an integral member disposed in proximity to the illuminated display, the integral member being a unitary integrally-formed body of an optically conductive material and comprising a lens member and a button member pivotably cantilevered from the lens member, the integral member being positioned relative to the illuminated display and the switch such that the graphics generated by the illuminated display is visible through the lens member and such that pivoting of the button member relative to the lens member actuates the switch; and

a housing having apertures formed therein, the integral member being disposed between the illuminated display and the housing such that the graphics generated by the illuminated display are visible through the apertures.

7. A backlit graphic display as recited in claim 6 wherein the integral member is positioned relative to the illuminated display such that the graphics generated by the illuminated display is visible through the button member.

8. A backlit graphic display as recited in claim 6 wherein the integral member comprises at least two button members pivotably cantilevered and projecting from opposite edges of the lens member, such that the lens member is between the at least two button members.

9. A backlit graphic display as recited in claim 6 further comprising a hinge pivotably attaching the button member to the lens member.

10. A backlit graphic display as recited in claim 6 wherein the integral member further comprises an actuator disposed adjacent the button member, the actuator being positioned relative to the switch such that the actuator actuates the switch when the button is pivoted relative to the lens member.

11. A backlit graphic display as recited in claim 10 wherein the actuator is formed by a distal end of the button member disposed opposite the lens member.

12. A backlit graphic display as recited in claim 6 wherein the button member is substantially coplanar with the lens member.

13. A backlit graphic display as recited in claim 6 wherein the integral member is an integrally-molded keypad.

14. A backlit graphic display comprising:

an illuminated display for generating graphics;

a plurality of switches disposed adjacent the illuminated display;

a unitary integrally-formed light-conducting member formed of an optically conductive material, the integrally-formed light-conducting member comprising;

a base;

a lens member supported by the base;

a plurality of button members pivotably cantilevered from the lens member, the plurality of button members being substantially coplanar with the lens member; and

a plurality of actuator members, each of the plurality of actuators projecting from a corresponding one of the plurality of button members such that each of the plurality of actuator members is disposed adjacent a corresponding one of the plurality of switches so as to actuate the corresponding one of the plurality of switches when the corresponding one of the plurality of button members is pivoted relative to the lens member;

wherein the integrally-formed light-conducting member is positioned relative to the illuminated display such that the graphics generated by the illuminated display is visible through the lens member and the plurality of button members; and

a housing having apertures formed therein, the integrally-formed light-conducting member being disposed between the housing and the illuminated display such that the graphics generated by the illuminated display are visible through the apertures.

15. A backlit graphic display as recited in claim 14 wherein at least two button members of the plurality of button members are pivotably cantilevered from opposite edges of the lens member, such that the lens member is between the at least two button members.

16. A backlit graphic display as recited in claim 14 wherein each of the plurality of actuators is formed by a distal end of the corresponding one of the plurality of button members, each of the distal ends being disposed opposite the lens member.

17. A backlit graphic display as recited in claim 14 wherein the integrally-formed light-conducting member is an integrally-molded keypad.

18. A backlit graphic display as recited in claim 14 further comprising a circuit board disposed behind the illuminated display, the plurality of switches and the illuminated display being mounted to the circuit board.