Molded video display screen bezel

• US 5,565,934 A
• Filed: 02/05/1992
• Issued: 10/15/1996
• Est. Priority Date: 02/05/1992
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Digital Equipment Corporation (HP Inc.)
• Inventors: Doumani, George A., Pauplis, William J., Boudreau, David E., Samarov, Victor M.
• Primary Examiner(s): O'Shea, Sandra L.
• Assistant Examiner(s): NING, JOHN K
• Application Number:
  US07/831,720
• Time in Patent Office: 1,714 Days
• Field of Search: 358/246, 358/247, 358/248, 358/255, 358/245, 358/485, 248/917, 248/918, 312/7.2, 312/223.2, 269/908, 425/522
• US Class Current: 348/818
• CPC Class Codes: H04N 5/645 Mounting of picture tube on chassis or in housing

Abstract

A method and apparatus for molding a video display screen bezel to a video display device, such as a CRT, is disclosed. The bezel is molded in such a way as to eliminate the need for fasteners between the bezel and the CRT and between the bezel and a housing or some other structural support. The molded bezel also prevents any undesirable shifting of the CRT with respect to the bezel due to accidental dynamic loads. The molding material conforms to the surface of the CRT compensating for any dimensional variations in the CRT while minimizing the size of the bezel. Molded within the bezel is a compensating means which absorbs stresses generated by the molding material both during and following the molding process which might otherwise be exerted on the CRT.

Claims

1. A video display unit, comprising:

a video display device having a display screen; and

a bezel directly on said video display device adjacent said display screen for supporting said video display device;

wherein said bezel is molded directly onto said video display device and wherein said bezel further includes;

means for compensating for dimensional changes in said bezel to reduce stress exerted on said video display device.

2. A video display unit according to claim 1, wherein said compensating means comprises a resilient member having an arcuate shape and configured to conform to a contoured surface of said video display device.

3. A video display unit according to claim 2, wherein said resilient member has a corrugated portion formed to permit dimensional changes in said resilient member to provide compensation for said dimensional changes in said bezel.

4. A video display unit according to claim 3, wherein said corrugated portion is disposed between first and second side portions of the resilient member which are formed to provide attachment of said resilient member to said bezel.

5. A video display unit according to claim 4, wherein said first and second side portions comprise ridges extending transversely with respect to a direction of said dimensional changes to provide attachment between said bezel and said resilient member.

6. A video display unit according to claim 3, wherein said corrugated portion comprises surfaces shaped to provide a plurality of channels extending transversely with respect to the plane of an opening of said bezel for said display screen.

7. A video display unit according to claim 1, wherein said compensating means comprises a channel in the bezel extending transversely with respect to the plane of an opening of said bezel for said display screen to minimize stress exerted on said video display device by said bezel during said dimensional changes in said bezel.

8. A video display unit according to claim 7 further comprising another channel positioned within said bezel in opposing relationship to said first-mentioned channel, the channels cooperating to define first and second portions of said bezel which allow for even distribution of pressure around the periphery of said display screen due to dimensional changes of said bezel.

9. A video display unit according to claim 2, wherein said bezel is molded directly onto said video display device and has a channel extending circumferentially about the display screen, the channel being formed to provide a snap-fit engagement with a peripheral lip of a supporting structure.

10. A video display unit according to claim 2 further comprising a housing, and wherein said bezel is molded directly onto said video display device and includes means for attachment of said bezel to said housing.

11. A video display unit according to claim 2, wherein said video display device further comprises a body connected to said display screen by an intermediate peripheral surface, and wherein said bezel is molded directly onto said video display device and is configured to extend about said video display device at said intermediate peripheral surface.

12. A video display unit according to claim 11, wherein said bezel has a front lip which overlaps a peripheral portion of said display screen and a rear part which is shaped to conform to said intermediate peripheral surface and said body.

13. A video display unit according to claim 12, wherein said bezel is generally cup-shaped to conform to a contoured surface of said video display device, and wherein said lip and said rear part cooperate to confine said video display device to hold said bezel in place.

14. A video display unit according to claim 1 wherein said video display device comprises a cathode ray tube and said bezel is molded directly onto said video display device and is formed of a material that adheres to said cathode ray tube.

15. A bezel for a video display device having a display screen, comprising:

a molded frame for directly encompassing a periphery of said video display device about said display screen wherein said frame supports said video display device; and

means disposed within said frame for compensating for dimensional changes in said frame to reduce stress on said video display device.

16. A bezel according to claim 15, wherein said compensating means comprises a resilient member having an arcuate shape and configured to conform to a contoured surface of said video display device.

17. A bezel according to claim 16, wherein said resilient member has a corrugated portion to permit dimensional changes in said resilient member to provide compensation for said dimensional changes in said frame.

18. A bezel according to claim 17, wherein said corrugated portion is disposed between first and second side portions of said resilient member which are formed to provide attachment of said resilient member to said frame.

19. A bezel according to claim 18, wherein said first and second side portions comprise ridges extending transversely with respect to a direction of said dimensional changes to provide attachment between said frame and said resilient member.

20. A bezel according to claim 17, wherein said corrugated portion comprises surfaces shaped to provide a plurality of channels extending transversely with respect to the plane of an opening of said frame for said display screen.

21. A bezel according to claim 15, wherein said frame has formed therein a channel extending transversely with respect to the plane of an opening of said frame for said display screen to minimize stress exerted on said video display device by said frame during said dimensional changes in said frame.

22. A bezel according to claim 21 further comprising another channel positioned within said frame in opposing relationship to said first-mentioned channel, the channels cooperating to define first and second portions of said frame which allow for even distribution of pressure around periphery of said display screen due to dimensional changes of said frame.

23. A bezel according to claim 15, wherein said frame has formed therein a channel extending circumferentially about the display screen, the channel being formed to provide a snap-fit engagement with a peripheral lip of a supporting structure.

24. A bezel according to claim 15, wherein said video display device further comprises a body connected to said display screen by an intermediate peripheral surface, and wherein said frame is configured to extend about said video display device at said intermediate peripheral surface.

25. A bezel according to claim 24, wherein said frame has a front lip which overlaps a peripheral portion of said display screen and a rear part which is shaped to conform to said intermediate peripheral surface and said body.

26. A bezel according to claim 25, wherein said frame is generally cup-shaped to conform to a contoured surface of said video display device, and wherein said lip and said rear part cooperate to confine said video display device to hold said bezel in place.

27. A bezel according to claim 15 further comprising an adhesive for adhering said frame to said video display device.

28. A video display unit, comprising:

a video display device having a display screen; and

a bezel formed directly onto said video display device by molding said bezel about said video display device in a portion thereof adjacent said display screen;

wherein said bezel is further molded about means for compensating for dimensional changes in said bezel to reduce stress exerted on said video display device.

29. A video display unit according to claim 28, wherein said bezel is further molded about a resilient member having an arcuate shape conforming to a contoured surface of said video display device.