Cooling system for double sided display assembly
地域：
GA
GA Alpharetta
摘要
A rooftop mounted display assembly includes a first and second electronic display located at a housing for mounting to a roof of a vehicle. Apertures are vertically spaced apart along either end of thermal plates located behind the electronic displays. Fan(s), when activated, force ambient air through an inlet aperture located at a proximal end of the housing, the apertures at a first end of the thermal plates, channels located between the thermal plates and the electronic displays, the apertures at a second end of the thermal plates, and an exhaust aperture at a distal end of the housing.
說明書
The application is a continuation of U.S. patent application Ser. No. 15/450,365 filed Mar. 6, 2017, which claims the benefit of U.S. Provisional Patent Application No. 62/303,806 filed on Mar. 4, 2016, the disclosures of each of which are hereby incorporated by reference in their entireties.
Embodiments of the present invention generally relate to cooling systems for electronic displays.
Electronic displays are sometimes used in outdoor environments or other areas where the surrounding temperatures may be high or there may be other sources of heat such as solar loading causing the temperatures within the display to rise. However, some portions of the display can be difficult to cool as simply ingesting ambient air into some portions of the display can introduce dust and contaminates into sensitive portions of the display, which can lead to premature failures.
權(quán)利要求
What is claimed is:1. A display assembly for mounting to a roof of a vehicle, the display assembly comprising:a housing adapted for mounting to the roof of the vehicle; a first electronic display and a second electronic display located at the housing; a first thermal plate positioned behind a rear surface of the first electronic display and comprising a first set of apertures vertically spaced apart along a first end of said first thermal plate and a second set of apertures vertically spaced apart along a second end of said first thermal plate; a second thermal plate positioned behind a rear surface of the second electronic display and comprising a third set of apertures vertically spaced apart along a first end of said second thermal plate and a fourth set of apertures vertically spaced apart along a second end of said second thermal plate; an inlet aperture located at a proximal end of said housing; an exhaust aperture located at a distal end of said housing; a first channel located between the first thermal plate and the rear surface of the first electronic display; a second channel located between the second thermal plate and the rear surface of the second electronic display; and one of more fans configured to, when activated, force ambient air through said inlet aperture, the first set of apertures in said first thermal plate and the third set of apertures in said second thermal plate, each of said first and second channels, the second set of apertures in said first thermal plate and said fourth set of apertures in said second thermal plate, and said exhaust aperture; wherein said inlet aperture, said first set of apertures in said first thermal plate, said second set of apertures in said first thermal plate, said third set of apertures in said second thermal plate, said fourth set of apertures in said second thermal plate, said first and second channels, and said exhaust aperture form at least part of an open loop; and wherein said open loop is configured to cause the ambient air to travel vertically through said inlet aperture, vertically along said first end of said first thermal plate and said first end of said second thermal plate, inward through the first set of apertures in said first thermal plate and said third set of apertures in said second thermal plate, horizontally along said second end of said first thermal plate and said second end of said second thermal plate, outward through the second set of apertures in said first thermal plate and said fourth set of apertures in said second thermal plate, and vertically through said exhaust aperture. 2. The display assembly of claim 1 wherein:said inlet aperture and said exhaust aperture are located at an upper panel of said housing. 3. The display assembly of claim 1 wherein:said first and second electronic displays each comprise a layer of liquid crystals and a backlight; said first channel extends along a rear surface of said backlight for said first electronic display; and said second channel extends along a rear surface of said backlight for said second electronic display. 4. The display assembly of claim 3 further comprising:a first cover panel located in front of said first electronic display; a second cover panel located in front of said second electronic display; a first front channel located between said first cover panel and said first electronic display; a second front channel located between said second cover panel and said second electronic display; a sealed electronics compartment located between said first and second thermal plates and said housing and in fluid communication with said first and second front channels; a closed loop comprising the first and second front channels and the sealed electronics compartment; and one or more closed loop fans located along said closed loop and configured to force circulating gas through said closed loop when activated. 5. The display assembly of claim 4 wherein:said closed loop encircles each of said first and second electronic displays. 6. The display assembly of claim 5 wherein:said closed loop fans are located at a bottom portion of said housing. 7. The display assembly of claim 6 further comprising:electronic components for operating said first and second electronic displays located at a rear surface of one or more of said first and second thermal plates. 8. The display assembly of claim 1 further comprising:one or more feet extending from said housing to the roof of the vehicle, wherein each of said feet are configured to match a pitch of a section of said roof. 9. A display assembly for mounting to a roof of a vehicle, the display assembly comprising:a housing adapted for mounting to the roof of the vehicle; one or more feet extending from said housing to the roof of the vehicle; a first electronic display and a second electronic display located at the housing in an opposing arrangement such that the first electronic display faces a first direction, and the second electronic display faces a second direction opposing the first direction; a first thermal plate positioned behind a rear surface of the first electronic display; a second thermal plate positioned behind a rear surface of the second electronic display; an open loop pathway for ambient air comprising:an inlet aperture located at a first end of said housing for ingesting the ambient air; a first open loop channel located between, and extending along, the first thermal plate and the rear surface of the first electronic display; a second open loop channel located between, and extending along, the second thermal plate and the rear surface of the second electronic display; a first set of entrance apertures located at a first end of the first thermal plate and configured to provide fluid communication between the inlet aperture and the first open loop channel, wherein the first set of entrance apertures face in the first direction; a second set of entrance apertures located at a first end of the second thermal plate and configured to provide fluid communication between the inlet aperture and the second open loop channel, wherein the second set of entrance apertures lace in the second direction; an exhaust aperture located at a second end of said housing for exhausting the ambient air; a first set of exit apertures located at a second end of the first thermal plate and configured to provide fluid communication between the first open loop channel and the exhaust aperture, wherein the first set of exit apertures face in the first direction; a second set of exit apertures located at a second end of the second thermal plate and configured to provide fluid communication between the second open loop channel and the exhaust aperture, wherein the second set of exit apertures face in the second direction; and one or more open loop fans configured to, when activated, cause the ambient air to travel through said inlet aperture, each of said first and second set of entrance apertures, each of said first and second open loop channels, each of said first and second set of exit apertures, and said exhaust aperture; and an electronics compartment located between the first and second thermal plates and configured to receive a flow of substantially particulate-free air. 10. The display assembly of claim 9 further comprising:electronic components for operating said first and second electronic displays mounted to a rear surface of one or more of said first and second thermal plates. 11. The display assembly of claim 10 wherein:said first set of entrance apertures, said first set of exit apertures, said second set of entrance apertures, and said second set of exit apertures are located outside of, and fluidly sealed from, said electronics compartment. 12. The display assembly of claim 11 wherein:said first set of entrance apertures are vertically aligned and spaced apart; said first set of exit apertures are vertically aligned and spaced apart; said second set of entrance apertures are vertically aligned and spaced apart; and said second set of exit apertures are vertically aligned and spaced apart. 13. The display assembly of claim 12 further comprising:a first cover layer located in front of said first electronic display; a second cover layer located in front of said second electronic display; a first closed loop channel located between said first cover layer and said first electronic display; a second closed loop channel located between said second cover layer and said second electronic display; and a closed loop pathway comprising said first closed loop channel, said second closed loop channel, and said electronics compartment. 14. The display assembly of claim 13 wherein:said first electronic display comprises a first layer of liquid crystals and a first backlight; said second electronic display comprises a second layer of liquid crystals and a second backlight; said first open loop channel extends along a rear surface of the first backlight; and said second open loop channel extends along a rear surface of the second backlight. 15. The display assembly of claim 9 wherein:each of the first set of entrance apertures are vertically aligned, spaced apart from one another, and located outside of, but adjacent to, the electronics compartment; each of the second set of entrance apertures are vertically aligned and spaced apart from one another, and located outside of, but adjacent to, the electronics compartment; each of the first set of exit apertures are vertically aligned and spaced apart from one another, and located outside of, but adjacent to, the electronics compartment; and each of the second set of exit apertures are vertically aligned and spaced apart from one another, and located outside of, but adjacent to, the electronics compartment. 16. A display assembly for mounting to a roof of a vehicle, said display assembly comprising:a housing adapted for mounting to the roof of the vehicle; a first electronic display and a second electronic display located at the housing in a back to back arrangement; a first thermal plate positioned adjacent to a rear surface of the first electronic display and comprising a first set of apertures spaced apart from one another vertically along a first end of said first thermal plate and a second set of apertures spaced apart from one another vertically along a second, opposing end of said first thermal plate; a second thermal plate positioned adjacent to a rear surface of the second electronic display and comprising a third set of apertures spaced apart from one another vertically along a first end of said second thermal plate and a fourth set of apertures spaced apart from one another vertically along a second, opposing end of said second thermal plate; an inlet aperture located at a proximal end of said housing; an exhaust aperture located at a distal end of said housing; one or more channels located between the thermal plates and the electronic displays and in fluid communication with said inlet aperture and said exhaust aperture by way of the apertures in the thermal plates; one of more fans configured to, when activated, draw ambient air through said inlet aperture, each of the apertures in said thermal plates, each of said channels, and said exhaust aperture; and an electronics compartment located between the first and second thermal plates configured to maintain a flow of substantially particulate-free air; wherein said first set of apertures and said second set of apertures in said first thermal plate as well as said third set of apertures and said fourth set of apertures in said second thermal plate are located outside of, but adjacent to, said electronics compartment; wherein said one or more channels extend along a longitudinal axis of said housing to permit horizontal flow of the ambient air along said channels, said inlet aperture and said exhaust aperture are positioned on said housing to permit vertical distribution of the ambient air along said thermal plates, and said apertures in said thermal plates permit inward and outward flow of said ambient air between said channels and said inlet aperture or said exhaust aperture. 17. The display assembly of claim 16 further comprising:a closed loop pathway comprising said electronics compartment and encircling each of the electronic displays. 18. The display assembly of claim 17 wherein:each of said electronic displays comprise liquid crystal type displays.
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