Cooling system for outdoor electronic displays

• US 8,379,182 B2
• Filed: 09/09/2009
• Issued: 02/19/2013
• Est. Priority Date: 11/16/2007
• Status: Expired due to Fees

• Current Assignee: Manufacturing Resources International, Inc.
• Original Assignee: Manufacturing Resources International, Inc.
• Inventors: Dunn, William
• Primary Examiner(s): CHEN, WEN YING PATTY
• Application Number:
  US12/556,209
• Publication Number:
  US 20100232107A1
• Time in Patent Office: 1,259 Days
• Field of Search: 349/161
• US Class Current: 349/161
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: G02F 2201/36 Airflow channels, e.g. constructional arrangements facilitating the flow of air
• CPC Class Codes: H05K 7/20972 Forced ventilation, e.g. on heat dissipaters coupled to components

Abstract

A cooling system for an electronic display. Transparent cooling chambers are used to extract heat from the front display surface of an electronic display. A refrigerated air source is in gaseous communication with the cooling chamber. Additional fans may be used to cool other components of the electronic display. Multiple displays may be used where each display and the refrigerated air source is housed within the housing. The housing contains air inlet and air exhaust ports. An air curtain device may be used with some embodiments. An open-loop, closed-loop, or both types of designs may be used with the cooling chambers. Temperature sensors may allow the refrigerated air source(s) to be selectively engaged depending on the temperature of the air within the cooling chamber or the temperature of the front display surface. Ambient temperature sensors may also direct the switch between open and closed loops.

Claims

1. A cooling system for an electronic display having a display surface and electronic components, the cooling system comprising:

a transparent cooling chamber placed adjacent to the display surface, the chamber having a first and second opening and a transparent front plate;

a refrigerated air source in gaseous communication with the first opening of the transparent cooling chamber; and

a manifold in gaseous communication with the first opening of the cooling chamber which contains a plurality of apertures to distribute cooling air from the refrigerated air source across the display surface.

2. The cooling system from claim 1 further comprising:

an air curtain device in gaseous communication with the second opening of the chamber.

3. The cooling system from claim 1 further comprising:

a fan directing ambient air across at least one electronic component of the electronic display.

4. The cooling system from claim 1 further comprising:

a fan in gaseous communication with the refrigerated air source and directing refrigerated air across at least one electronic component of the display.

5. The cooling system from claim 1 further comprising:

a linear polarizer placed between the transparent front plate and the electronic display.

6. A display system comprising:

first and second electronic displays placed adjacent to one another, both displays having display surfaces and electronic components;

a first cooling system attached to the first electronic display and comprising

a transparent cooling chamber placed adjacent to the display surface, the chamber having a first and second opening and a transparent front plate and

a refrigerated air source in gaseous communication with the first opening of the transparent cooling chamber;

a second cooling system attached to the second electronic display and comprising

a transparent cooling chamber placed adjacent to the display surface, the chamber having a first and second opening and a transparent front plate and

a refrigerated air source in gaseous communication with the first opening of the transparent cooling chamber;

a housing which enclosed the displays and the cooling systems;

an access door within the housing; and

air inlet and air exhaust apertures within the housing.

7. The display system from claim 6 further comprising:

a first fan directing ambient air from the air inlet aperture across at least one electronic component of the first electronic display; and

a second fan directing ambient air from the air inlet aperture across at least one electronic component of the second electronic display.

8. The display system from claim 6 further comprising:

a first fan in gaseous communication with the refrigerated air source of the first cooling system and directing refrigerated air across at least one electronic component of the first electronic display; and

a second fan in gaseous communication with the refrigerated air source of the second cooling system and directing refrigerated air across at least one electronic component of the second electronic display.

9. The display system from claim 6 further comprising:

a pair of exit manifolds, a first of which in gaseous communication with the second opening of the chamber and the refrigerated air source of the first cooling system, a second of which in gaseous communication with the second opening of the chamber and the refrigerated air source of the second cooling system.

10. The display system from claim 9 further comprising:

a first temperature sensor within the chamber of the first cooling system, wherein the refrigerated air source sends refrigerated air to the entrance manifold when the temperature within the first chamber reaches a threshold value; and

a second temperature sensor within the chamber of the second cooling system, wherein the refrigerated air source sends refrigerated air to the entrance manifold when the temperature within the second chamber reaches a threshold value.

11. A display system comprising:

a first electronic display having a display surface and electronic components;

a first cooling system attached to the first electronic display comprising;

a transparent plate placed in front of the display surface,

a pair of spacing members between the transparent plate and the display surface, where the spacing members, transparent plate and front display surface form a chamber having a first and second opening,

an entrance manifold in gaseous communication with the first opening of the chamber;

a second electronic display having a display surface and electronic components;

a second cooling system attached to the second electronic display;

a transparent plate placed in front of the display surface,

a pair of spacing members between the transparent plate and the display surface, where the spacing members, transparent plate and front display surface form a chamber having a first and second opening, and

an entrance manifold in gaseous communication with the first opening of the chamber;

a refrigerated air source in gaseous communication with the entrance manifolds of the first and second cooling systems;

a housing which enclosed the displays and the cooling systems; and

air inlet and air exhaust apertures within the housing.

12. The display system from claim 11 further comprising:

a first exit manifold in gaseous communication with the second opening of the chamber of the first cooling system;

a second exit manifold in gaseous communication with the second opening of the chamber of the second cooling system; and

wherein both the first and second exit manifolds are also in gaseous communication with the refrigerated air source.

13. The display system from claim 11 further comprising:

an additional transparent plate attached to the transparent plate of the first cooling system; and

an additional transparent plate attached to the transparent plate of the second cooling system.

14. The display system from claim 11 further comprising:

a first fan directing ambient air from the air inlet aperture across the electronic components of the first electronic display; and

a second fan directing ambient air from the air inlet aperture across the electronic components of the second electronic display.

15. The display system from claim 11 further comprising:

a first linear polarizer placed behind the transparent plate of the first cooling system; and

a second linear polarizer placed behind the transparent plate of the second cooling system.

16. The display system from claim 11 further comprising:

a first fan in gaseous communication with the refrigerated air source and directing refrigerated air across the electronic components of the first electronic display; and

a second fan in gaseous communication with the refrigerated air source and directing refrigerated air across the electronic components of the second electronic display.

17. The display system from claim 11 further comprising:

an access door within the housing.

18. The display system from claim 11 further comprising:

a first temperature sensor within the chamber of the first cooling system, wherein the refrigerated air source sends refrigerated air to the entrance manifold when the temperature within the first chamber reaches a threshold value; and

a second temperature sensor within the chamber of the second cooling system, wherein the refrigerated air source sends refrigerated air to the entrance manifold when the temperature within the second chamber reaches a threshold value.

19. The display system from claim 11 further comprising:

a first exit manifold in gaseous communication with the second opening of the chamber of the first cooling system;

a second exit manifold in gaseous communication with the second opening of the chamber of the second cooling system; and

wherein both the first and second exit manifolds are also in gaseous communication with the exhaust air aperture.

20. The display system from claim 11 further comprising:

a first air curtain device in gaseous communication with the second opening of the chamber of the first cooling system; and

a second air curtain device in gaseous communication with the second opening of the chamber of the second cooling system.