Video display system

• US 8,472,174 B2
• Filed: 05/07/2009
• Issued: 06/25/2013
• Est. Priority Date: 05/07/2008
• Status: Active Grant

• Current Assignee: Comark, LLC
• Original Assignee: Vertigo Digital Displays LLC
• Inventors: Idems, Ralph, Bolton, Christopher John, Yan, George
• Primary Examiner(s): Wilson, Adrian S
• Application Number:
  US12/991,328
• Publication Number:
  US 20110058326A1
• Time in Patent Office: 1,510 Days
• Field of Search: 36167921-6793
• US Class Current: 361/679.21
• CPC Class Codes: G09F 9/30 in which the desired character or characters are formed by combining individual elements panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13
• CPC Class Codes: H05K 7/20972 Forced ventilation, e.g. on heat dissipaters coupled to components

Abstract

A video screen enclosure is disclosed for housing a flat panel video display unit (“FPD”), comprising a housing and a front panel member joined to the housing with an airtight seal. An environmental control unit (“ECU”) within housing includes means to internally circulate air within said enclosure to maintain a temperature within a range suitable for operation of said display, and a control system to maintain the interior temperature within said enclosure within a selected range suitable for operation of said FPD. The enclosure may form a sealed unit with interior air being recirculated through said ECU, or ambient air may be circulated through the enclosure.

Claims

1. A video screen enclosure system for displaying a flat panel video display unit (“

FPD”

), comprising a housing including spaced apart front and rear surfaces defining an interior space, a front panel member mounted to said housing with an airtight seal, said front panel member including a clear viewing panel, a mount for retaining said FPD within the interior space of said housing to provide an air gap between said FPD and said front and rear surfaces with said air gap at least partially surrounding said FPD, an air inlet to permit exterior air to enter into said housing, an air outlet to exhaust air from said housing, an air circulation subsystem to draw exterior air into said housing through said inlet and circulate ambient air within said housing, said front panel member being engaged to said housing with a first pivotal engagement and said FPD being engaged to said housing with a second pivotal engagement independent of said first pivotal engagement, said first and second pivotal engagements being configured to permit said panel member and said FPD respectively to pivot outwardly from said housing independently of each other along parallel axes of rotation to permit access into the interior of said housing, and at least one of said first and second pivotal engagements comprising mutually engaging surfaces configured to oppose each other and rest one upon the other.

2. A system as defined in claim 1 wherein said air circulation subsystem further comprises an inlet manifold, a speed-controlled fan, an exhaust outlet, and optionally at least one baffle configured to direct said laminar flow air current across front and rear faces of said FPD.

3. A system as defined in claim 1 wherein said mutually engaging surfaces comprise upwardly and downwardly projecting surfaces respectively, configured to interlock when engaged.

4. A system as defined in claim 1 further comprising struts connecting said front panel member and said FPD to said housing to retain said panel member and FPD respectively in an open position, said struts having releasable mounts to permit rapid disconnection of said FPD and said front panel member from said housing.

5. A system as defined in claim 4 further comprising means to shut down power to said FPD when said interior temperature is outside said selected range.

6. A system as defined in claim 1 further comprising one or more sensors to detect intrusion into said enclosure, breakage of said front panel member, or movement of said enclosure, and an environmental control unit comprising means responsive to said sensors to shut down power to said FPD or transmit an alarm signal to a remote recipient.

8. A system as defined in claim 1 further comprising an FPD positioned within the interior space.

9. A display system comprising a support frame and at least one video screen enclosure system as defined in claim 1 mounted to said frame configured to form a multi-sided display module wherein said video screen enclosure system forms comprises at least one side of said module.

10. A system as defined in claim 9 wherein said frame is configured to retain at least two of said enclosures in angled relationship to each other.

11. A system as defined in claim 10 comprising a substantially enclosed structure defining an interior space, wherein said enclosures face outwardly from said structure.

12. A system as defined in claim 9 configured to form a component of a transit shelter.

13. A system as defined in claim 9 configured as a triangular structure having three generally vertically oriented rectangular sidewalls at least one of which comprises said video screen enclosure system.

14. A system as defined in claim 1 wherein said air inlet further comprises a semi-permeable membrane for filtering incoming air.

15. A system as defined in claim 14 wherein said semi-permeable membrane blocks moisture.

16. A system as defined in claim 1 wherein said air circulation subsystem is configured to circulate air within said housing in a laminar flow air current across front and rear faces of said FPD.

7. A video screen enclosure system for displaying a flat panel video display unit (“

FPD”

), comprising a housing including spaced apart front and rear surfaces defining an interior space, a front panel member mounted to said housing with an airtight seal, said front panel member including a clear viewing panel, means to mount said FPD within said housing to provide an air gap between said FPD and said front and rear surfaces with said air gap at least partially surrounding said FPD, a fan to circulate air within said housing in a laminar flow pattern across front and rear faces of said FPD, a temperature sensor, an environmental control unit (“

ECU”

) responsive to said temperature sensor configured to control said means to circulate air to maintain the interior temperature within said housing within a selected range suitable for operation of said FPD, and at least one baffle configured to direct said laminar flow air current across the front and rear faces of said FPD within said housing, said front panel member being engaged to said housing with a first pivotal engagement and said FPD being engaged to said housing with a second pivotal engagement independent of said first pivotal engagement, said first and second pivotal engagements being configured to permit said panel member and said FPD respectively to pivot outwardly from said housing independently of each other along parallel axes of rotation to permit access into the interior of said housing, and at least one of said first and second pivotal engagements comprising mutually engaging surfaces configured to oppose each other and rest one upon the other.