CN101971081A - System and method for thermally controlling an electronic display - Google Patents
System and method for thermally controlling an electronic display Download PDFInfo
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- CN101971081A CN101971081A CN2008801249230A CN200880124923A CN101971081A CN 101971081 A CN101971081 A CN 101971081A CN 2008801249230 A CN2008801249230 A CN 2008801249230A CN 200880124923 A CN200880124923 A CN 200880124923A CN 101971081 A CN101971081 A CN 101971081A
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Abstract
Embodiments relate generally to various thermal control features for electronic displays. One feature comprises a closed loop isolated gas chamber, where a first chamber is in contact with the display surface and transfers heat between the isolated gas and the display surface. A second chamber is in gaseous communication with the first chamber and is adapted to heat or cool the isolated gas and reintroduce the isolated gas into the first chamber. Another feature uses constricted convection to facilitate the cooling of the backlight assembly for the electronic display. Another feature uses an air curtain to further heat or cool the exterior viewing surface of the display. Another feature uses a linear polarizer with an insulating gap to reduce the solar loading of the display stack and provide insulation from the ambient air temperature. Another feature uses a fluid system to contact fluid coolant with the display surface in order to cool the display. Each of the features may be used alone, or in combination to provide the proper operating temperature for the display depending on its desired operating environment.
Description
Technical field
Illustrative embodiments relates generally to the heating/cooling system that is used for electronic console.
Background technology
Electronic console uses in indoor, temperature control environment usually.Although the possibility of the temperature around the display relatively stable (near room temperature), the element of display can produce a large amount of heats.If can not suitably eliminate these heats, such heat may damage display or shorten its life-span.Traditionally, conduction and convection heat transfer' heat-transfer by convection system have been used for eliminating heat by the sidewall as much as possible of display from the electronic component of display.When aforementioned heat transfer system was to a certain degree successful in the past, current electronic console required bigger cooling (in some cases, reaching heating) ability.
The hyundai electronics display just may use in other situation above and below room temperature at outdoor environment and environment temperature now.Except heat transfer from surrounding air, pass display surface, also become principal element from the radiant heat transfer of the sun.Some use and the position in, it is very general that 200 watts or bigger power pass the aforementioned display surface.In addition, market needs bigger and brighter, sometimes even the high-resolution display of needs day by day.Along with the increase of electronic console size, will absorb more heat from the sun, and more heat will be imported display into.For defeating from the surround lighting of the sun and the reflection of circumferential surface, display must produce more light, and this also causes display and/or its backlight assembly to produce more heat usually.
In addition, in some applications, temperature may drop to far below room temperature.Some elements of electronic console may break down or permanent damage because of being exposed in such low temperature.For example, the performance of the liquid crystal material in the LCD (LCD) may be subjected to low temperature effect.
Summary of the invention
Illustrative embodiments can comprise one or more heat control parts disclosed herein.Disclose a plurality of heat control parts, and these parts can be exercised usefulness separately or by any being combined into.The precise combination of parts will depend on the concrete cooling needs of related display, and this depends on the type of display, the size and the concrete environment thereof of display.Embodiment can implement by any type of electronic console, includes but not limited to: LCD, light emitting diode (LED), Organic Light Emitting Diode (OLED), field-emitter display (FED), cathode ray tube (CRT), plasma, and the projection display.Exemplary embodiment will be implemented with LCD display.
A thermal part relates to the separation gas cooling system.Gas system is preferably the closed-loop path that comprises first air chamber with transparent front plate and have second air chamber of cooling air supplying system.First air chamber is in observable front of electronic console and with it with prolonging.Transparent front plate is seated in the front on electronic console surface, forms the degree of depth of first air chamber.Cooling chamber fan or equivalent device can be positioned at the cooling air supplying system and can be used for around separation gas cooling chamber loop propelling gas.Along with gas through first air chamber, its contact electronic console surface, thus absorb heat from display surface.Because the gas and the respective surfaces of first air chamber are transparent, it is fabulous that picture quality keeps.By after the first transparent air chamber, gas can import the cooling air supplying system of back and cool off there at gas.
Another thermal part can use the separation gas system and be heating arrangement, replaces its cooling power or except that cooling power.The separation gas heating system also is the closed-loop system that has first air chamber of display surface front and comprise second Room of heating plenum system or cooling plenum system.Heating element can be placed in the plenum system to heat the second indoor gas.Along with gas is forced into first Room, it can pass to display surface with its heat.Afterwards, gas can turn back to plenum system and carries out another heat cycles.Plenum system can only be used as the cooling air supplying system, only as the heating plenum system or as the combination of heating and cooling plenum system; All these all depend on particular display and specific work environments thereof.
Some embodiments can be placed on the electronic component that is used to operate electronic console in the plenum system of separation gas chamber.Electronic component can include but not limited to: transformer, circuit board, processor, resistor, capacitor, battery, motor, power supply, lighting device, wiring and wire harness, and switch.If plenum system is as the cooling air supplying system, the cold air in the plenum system can further help to cool off the electronic component that produces heat during operation naturally.In addition, if plenum system as the thermal source of display, also can heat gas in the plenum system from the natural heat of electronic component, thereby reduce the energy that need be applied to heating element.
Can use linear polariser to be carried in daylight on the electronic console in some embodiments with further minimizing.This polarizer can use in conjunction with the separation gas chamber, or can be placed on the front of electronic console simply but heat insulation gap is arranged between the polarizer and the display.The heat that transmits between the polarizer and the display is reduced in heat insulation gap.
Some electronic consoles such as LCD need backlight assembly to produce image on display surface.Backlight assembly is generally the big thermal source of display.Therefore, some embodiments can utilize limited convection system to cool off the back light unit of display.Limited convection system can comprise limited convection current plate, and this convection current plate is placed to backlight assembly very close to form the gap.Gas is forced to and passes the gap to help more effectively to cool off backlight assembly.In a preferred embodiment, the wall of plenum system can constitute limited convection current plate.
Some embodiments also can use air curtain device, and this air curtain device is forced (heat or cold) air on the outside surface of display assembly.
At last, some embodiments can use the liquid assembly, and this liquid assembly makes liquid contact display surface so that it is cooled off.Liquid can be the coolant liquid of limpid in fact form, and this liquid pumps into by the ante-chamber that comprises display surface.
Description of drawings
Can understand illustrative embodiments of the present invention better by reading following detailed and accompanying drawing, wherein same Reference numeral refers to same part, and wherein:
Fig. 1 is the stereographic map of the exemplary embodiment relevant with the exemplary electrical sub-display.
Fig. 2 is the exploded perspective view of exemplary embodiment that the assembly of separation gas cooling system is shown.
Fig. 3 is the plan view from above of the exemplary embodiment of cooling chamber.
Fig. 4 is the embodiment that the isolates cooling chamber especially forward direction stereographic map of the transparent front surface of first air chamber.
Fig. 5 is back to stereographic map for the embodiment's that isolates cooling chamber, shows the optional electric device that is placed in the plenum system.
Fig. 6 is back to stereographic map for the embodiment's that isolates cooling chamber, shows the surface elements that can be included on the plenum system.
Fig. 7 is the plan view from above of the exemplary embodiment of cooling chamber, shows the surface elements that can be included on the plenum system.
Fig. 8 is for the forward direction stereographic map of the embodiment of isolation cooling chamber, comprising electrothermal module.
Fig. 9 is the plan view from above of the exemplary embodiment of cooling chamber, comprising electrothermal module.
Figure 10 is the exploded perspective view of exemplary embodiment that the assembly of separation gas cooling system is shown.
Figure 11 is the plan view from above of the exemplary embodiment of heating chamber.
Figure 12 is embodiment back to stereographic map of heating chamber, shows optional electric device and heating element.
Figure 13 and 14 wherein has separation gas system or heat insulation gap for the sectional view of the exemplary embodiment of use linear polariser.
Figure 15 A and 15B are the side view of limited exemplary embodiment to flow cooling system with limited convection current plate.
Figure 16 is the plan view from above of cooling air supplying system as the exemplary embodiment of limited convection current plate.
Figure 17 A-17C is the sectional view of cooling air supplying system as the embodiment of limited convection current plate.
Figure 18 is the front plan view of the display of use air curtain device.
Figure 19 is the sectional view of the display of use air curtain device.
Figure 20 is the diagram of assembly that is used for the display of liquid cooling.
Embodiment
The spirit and scope that should be appreciated that disclosed embodiment comprise that heat control includes but not limited to the display of LCD.Be the simple purpose of setting forth, embodiment all is described in conjunction with the assembly of LCD display.As an example but non-ly be intended to restriction, embodiment can use together with the display that is selected from down group: LCD, light emitting diode (LED), Organic Light Emitting Diode (OLED), field-emitter display (FED), cathode ray tube (CRT), plasma, reach the projection display.In addition, embodiment can be together with comprising that still the display of undiscovered other type uses.Particularly, can predict, embodiment can be fit to use with panchromatic, dull and stereotyped OLED display well.In addition, especially predictably, embodiment can use with sizable, High Resolution LCD display.When embodiment described here was fit to outdoor environment well, they also can be fit to the thermal stability indoor application (as the environment of plant, refrigeratory/household freezer etc.) on the line of display.
The separation gas cooling system
As shown in fig. 1, when display 10 was exposed in the outdoor physical environment, the temperature variation under the situation of the cooling device that does not have some kind in the display 10 was very big.Like this, display 10 may not normally move maybe may have and reduce a lot of life-spans.At direct daylight aspect the internal temperature rising that causes display 10 problem is arranged especially.
In Fig. 1, the viewing area of shown electronic console is included in electronic console front, surface and coextensive with it narrow air chamber.Shown in display also be equipped with optional air curtain device 114.Air curtain device 114 will be discussed in more detail below.Alternatively, display can have radiation shield 119, to reduce sun reflection on display surface.In addition, in outdoor environment, shell 70 is preferably the color of reflection daylight.
As shown in Figure 2, the exemplary embodiment of electronic console 10 comprises the separation gas cooling chamber 20 that is included in the display casing 70.The first transparent air chamber is formed by spacer 100 and transparent front plate 90.The second transparent header board 130 can be laminated on the header board 90 to help to prevent that header board 90 from breaking and protect the inside of display.Cooling chamber 20 surrounds display group 80 and relevant backlight assembly 140.
With reference to figure 3, the embodiment of separation gas cooling chamber 20 can comprise the closed-loop path with first air chamber 30 and second air chamber 40.First air chamber comprises transparent panel 90.Second air chamber comprises cooling air supplying system 45.Term " separation gas " refers to that gas in the separation gas cooling chamber 20 and the extraneous air in the display casing isolate in fact.Because first air chamber 30 is positioned at the front on electronic console surface 85, so gas should not contain dust or other dirt of possibility negative effect display image in fact.Optionally the filtrator (not shown) can be used for helping prevent dirt and dust to enter first air chamber 30.
Separation gas almost can be any transparent gas, for example normal air, nitrogen, helium or any other transparent gas.Gas is preferred colourless not influence picture quality.In addition, separation gas cooling chamber 20 must not be sealed in extraneous air.Gas barrier in this chamber is promptly enough to the degree that dust and dirt can not enter first air chamber in fact.
In closed-loop path structure shown in Figure 3, first air chamber 30 is communicated with second air chamber, 40 gases.Cooling chamber fan 50 can be provided in the cooling air supplying system 45 and be used for around separation gas cooling chamber 20 propelling gass.First air chamber 30 comprises at least one front glass 90 that is installed in 85 fronts, electronic console surface.
With reference to figure 4, header board 90 is fixed on the front on electronic console surface 85 by distance piece 100.Distance piece 100 is formed on the degree of depth of electronic console surface 85 slypes that pass through previously.Distance piece 100 can be stand-alone assembly or can with the device some other assembly one (as with header board 90 one).Electronic console surface 85, distance piece 100 and transparent front plate 90 form first air chamber 30.Air chamber 30 is communicated with plenum system 45 gases by inlet opening 110 and exit opening 120.
As shown in Figure 3, the rear surface of first air chamber 30 preferably includes the electronic console surface 85 of display group 80.Along with the process of the separation gas in first air chamber 30 display, its contact electronic console surface 85.Make refrigerating gas directly contact the convective heat transfer that electronic console surface 85 strengthens away from electronic console surface 85.In the exemplary embodiment, electronic console surface 85 comprises the rear surface of first air chamber 30.Therefore, term " electronic console surface " (not lying under the situation of this disclosed embodiment) refers to the front surface of typical electronic display.
In the exemplary embodiment, electronic console surface 85, header board 90 and optional second header board 130 can be made up of glass substrate.Yet display surface 85, transparent front plate 90 or optional second transparent front plate 130 all must not be glass.Therefore, term " glass " can use with term " plate " interchangeably at this, but is not the requirement glass material.In addition, the rear surface wall of air chamber 30 before electronic console surface 85 must not comprise.Can use other plate.Yet,, can have less surface influence to pass the visible light that display is propagated by with the rear surface wall of electronic console surface 85 as air chamber 30.In addition, apparatus of the present invention will be lighter and cost of manufacture is lower.
Although illustrated embodiment is utilized electronic console surface 85, some modification and/or coating (as antireflecting coating) can be added other assembly of electronic console surface 85 or system to adapt to the optical property of coolant gas or raising device.In the embodiment shown, electronic console surface 85 can be the front glass panel of LCD (LCD) heap.Yet almost any display surface all is fit to the various embodiments of cooling system of the present invention.Although do not require, preferably make the cold gas physical efficiency in first air chamber 30 directly contact electronic console surface 85.Like this, the convection heat transfer' heat-transfer by convection from the display assembly to the recyclegas will maximize.
Transparent and be positioned at the front on electronic console surface 85 with reference to the header board 90 of figure 4, the first air chambers 30.Shown in arrow represent that separation gas moves through first air chamber 30.As shown in the figure, separation gas with horizontal direction through first air chamber 30.Although cooling system 20 can be designed to level or vertical direction mobile gas, preferably with the horizontal direction propelling gas.Like this, if dust or dirt enter first air chamber 30, the bottom that they will be tending towards falling air chamber 30 is outside the observable zone of display.System of the present invention can from left to right mobile air, or mobile from right to left air.After gas was through first air chamber 30, it withdrawed from by exit opening 120.Exit opening 120 forms the inlet that is connected to back cooling air supplying system 45.
Fig. 5 shows the synoptic diagram (in order to illustrate, being shown transparent form) of back cooling air supplying system.One or more fans 50 in the plenum system can provide and make separation gas move through the needed power of separation gas cooling chamber.Be designed to when heat is collected on the surface 85 of display at first air chamber 30, second air chamber 40 is designed to remove heat from the gas extraction heat and from cooling chamber 20.Second air chamber 40 can have various profiles and feature to adapt to the inner structure in the given electronic display applications.
If desired, each electronic component 200 can be placed on second air chamber 40 Anywhere.Electronic component 200 can include but not limited to: transformer, circuit board, processor, resistor, capacitor, battery, motor, power supply, lighting device, wiring and wire harness, and switch.These elements can be directly installed on the locular wall be supported on bar or post 209 on.Therefore, the cooling air supplying system can be designed to not only extract heat but also cool off these different electronic components 200 (in addition, as described below, if the separation gas system is used to heat display, these electronic components can help to heat separation gas) from first air chamber 30.
With reference now to Fig. 6 and 7,, can increase various surface elements 150 to improve the heat dissipation of plenum system 45.These surface elements 150 provide bigger surface area with radiations heat energy away from the gas in second air chamber 40.These parts 150 can be positioned at lip-deep a plurality of positions of plenum system 45.
With reference now to Fig. 8 and 9,, one or more electrothermal modules 160 can be arranged in the gas that comprises with further cooling second air chamber 40 at least one surface of plenum system 45.Electrothermal module 160 can independently use or mating surface parts 150 use.As alternative, if the separation gas system is used for heating display under cold environment, electrothermal module 160 can be used for heating the gas in the plenum system.
Figure 10 shows the illustrative methods of eliminating the heat in the gas that back plenum system 45 comprises.Front and rear surface that fan 60 can be positioned to suck air and stride plenum system 45 blow this air.Explanation once more, fan 60 can suck Air Conditioning display casing 70 or can suck ambient air simply.In addition, in this structure, fan 60 also can force air to cool off the ability of whole display with further raising by the heat generating components (as display group 80 and backlight assembly 140) of electronic console.It should be noted that this embodiment can combine with limited convection current cooling means discussed in more detail below.Exhaust after the heating can be withdrawed from by the one or more holes 179 that are positioned on the display casing 70.
The separation gas heating system
As mentioned above, the separation gas system also can be used for heating electronic console.With reference to Figure 11 and 12, heating element 220 can be positioned at second air chamber 40 and be used for heated air when gas passes through second air chamber 40.These heating elements can be any in many common available heating elements or the electrothermal module.In the time of many, therefore these elements produce heat when electric current flows through at that time simply for comprising high-resistance material.Heating element can be but be not limited to one of the following: nichrome wire or band, be deposited on screen-printed metal/ceramic trace on metal (the being generally steel) plate that pottery isolates, CalRod (be generally the nichrome wire fine rule circle in the vitrified bond, be sealed in the hard betal can), thermolamp, and the resistor ceramic of positive thermal coefficient (PTC).
As mentioned above, plenum system 45 can comprise the electric device 200 that electronic console is powered and controlled.This electric device can be following any one: transformer, microprocessor, printed circuit board (PCB), power supply, resistor, capacitor, motor, wiring harness, and connector.The electrical connection of electric device 200 can be passed the wall of plenum system 45.Electric device 200 can be positioned at plenum system 45 Anywhere.Electric device 200 can be installed on the back of plenum system or the front surface and can be directly installed on maybe can suspend by erection column on the surface of plenum system and make gas to pass through around element.
In the display operation, separation gas cooling system continuously-running.Yet if desired, temperature sensor (not shown) and switch (not shown) can be combined in the electronic console.Therefore, thermostat can be used for detected temperatures reached predetermined threshold time and when the temperature in the display reaches predetermined value, can use the separation gas system selectively.Predetermined temperature threshold can be selected and system can be configured to heating, cools off or not only heats but also cool off display advantageously display is remained in the acceptable temperature range.
Linear polariser with optional heat insulation gap
Figure 13 is the sectional view of another exemplary embodiment of another heat control parts.Shown in the scheme, the header board 90 and second header board 130 can be formed and can be stacked by glass.First and second header boards 90 and 130 can be fixed to one another to form front glass unit 206 with the optical adhesive 201 of one deck index-matched.Display group 80 can comprise the Liquid crystal module 212 that is clipped between the preceding polarizer 216 and the back polarizer 214.In other embodiments, display group 80 can be the assembly of any other type of the electronic console of any other type.Space between display group 80 and the front glass unit 206 forms heat insulation gap 300.Heat insulation gap 300 is used to make front glass unit 206 and LCD heap 80 heat to separate.This heat separation makes heat rest on the front glass unit rather than allows daylight to be carried on the LCD heap.If use in conjunction with the separation gas system, heat insulation gap 300 can comprise first air chamber 30.In other embodiments, under the situation that does not have the separation gas system, heat insulation gap 300 can be used simply as the heat insulation layer of isolating surrounding air and daylight loading.
Second header board can have first surface 202 and second surface 208.First surface 202 can be exposed to element, and second surface 208 can be installed to by the optical adhesive 201 of index-matched on first header board 90.First header board 90 can have the 209 and the 4th surface 204, the 3rd surface.The 3rd surface 209 can be installed to by the optical adhesive 201 of index-matched on second header board 130, and the 4th surface can be directly adjacent with heat insulation gap 300.In certain embodiments, for the daylight that reduces display group 80 loads and improves observable picture quality, antireflecting coating can be applied to first surface 202 and the 4th surface 204.In other embodiments, antireflecting coating only can be applied at least one surface in the first, second, third or the 4th surface 202,208,209 and 204.
Figure 14 is the sectional view of another exemplary embodiment of front glass unit 206.Shown in the scheme, front glass unit 206 comprises optical adhesive 201, linear polariser 400 and first header board 90 of second header board 130, one deck index-matched.Linear polariser 400 can be respectively with the first, second, third or the 4th surface 202,208,209 and 204 at least one surface combination.Explanation once more, antireflecting coating can be applied at least one surface in the first, second, third or the 4th surface 202,208,209 and 204.Linear polariser 400 can be aimed at the preceding polarizer 209 that LCD piles in 85.Comprise that in front glass unit 206 linear polariser 400 further reduces daylight and is carried on the display group 80.The minimizing that daylight loads can reduce the internal temperature of electronic console greatly.Linear polariser 400 also can cause the direct reflection of front glass unit 206 and display group 80 to reduce.As mentioned above, if use in conjunction with the separation gas system, heat insulation gap 300 can comprise first air chamber 30.In other embodiments, under the situation that does not have the separation gas system, heat insulation gap 300 can be used simply as the heat insulation layer of isolating surrounding air and daylight loading.Should notice once more that display group 80 can be the LCD heap, but it also can be the electronic console of any other type.
Not it shall yet further be noted that and must need second header board 130.Embodiment can only use first header board 90, and linear polariser is attached to the back or the front surface of header board 90 simultaneously.Antireflecting coating also can be attached to the front or the rear surface of header board 90.Do not have second header board 130 if only use header board 90, can carry out tempering to have other intensity header board 90.
Limited convection current
The electronic console of some types needs backlight assembly to produce image on observable screen.LCD is one type the display that needs backlight assembly.The display of other type such as plasma scope and OLED do not need backlight assembly, because they oneself produce light.Yet the display of these types still produces a large amount of heats.Therefore, in the following description, limited convection system will be described in conjunction with backlight assembly, but it should be noted that these embodiment can use the display of other type to implement.Therefore, when backlight or backlight assembly were discussed, these assemblies also can be the rear surfaces of other heating display, and limited convection system helps more effectively to cool off these alternative display.It shall yet further be noted that the inevitable drafting in proportion of Figure 15 A-15B and Figure 17 A-17C.For the purpose of illustration, may exaggerate relation between the element.
Figure 15 A shows backlight 140 sectional view with limited convection current plate 300, and the space between two parts forms close clearance 305.The size in gap can change according to following Several Factors, comprising: the type of the size of display, its condition of work, backlight assembly and rear surface material thereof, and quantity and be applied to the power of each limited convection current fan.Some exemplary embodiments can be used the spacing of about 0.25-3.5 inch.Other embodiment can use bigger a little gap.Find, force air to pass the ability that this gap 305 increases cooling backlight 140.One or more limited convection current fans 310 can be used for attracting air to pass gap 305.Figure 15 B shows the sectional view of another embodiment of limited convection system, and wherein one or more limited convection current fans 310 promote air and pass gap 305.
Figure 16 shows the vertical view of aforesaid separation gas system.Show the section line 17-17 that passes the separation gas system.
Figure 17 A-17C shows the sectional view in the 17-17 cross section shown in Figure 16.At first with reference to figure 17A, towards the display front be first air chamber 30, this air chamber is near electronic console 80.The front of first air chamber 30 is header boards 90.Towards the back of display, 140 next-door neighbours, second air chamber 40 backlight is placed.In this structure, the outer wall of second air chamber 40 can be used as limited convection current plate.This embodiment does not use limited convection current fan, sucks air from the display casing outside and it is forced lip-deep fan 60 at second air chamber 40 and be to use.As mentioned above, this air may simply be ambient air or this air can be from the regulon (not shown).For help backlight 140 and cooling chamber 40 between air flow, can use guiding device 320.
With reference now to Figure 17 B,, cooling chamber 40 comprises guide member 41, and it uses to help the air flow between backlight and the cooling chamber in conjunction with guiding device 320.Figure 17 C shows another embodiment, wherein uses external fan 60 and limited convection current fan 310 simultaneously.This embodiment also can use the guiding device of version shown in Figure 17 A and the 17B.
In the display operation, 310 continuously-runnings are fanned in external fan 60 and limited convection current.Yet if desired, temperature sensor (not shown) and switch (not shown) can be combined in the electronic console.This effective thermostat can be used for the time that detected temperatures has reached predetermined threshold.In this case, when reaching predetermined value, the temperature in the display can use each fan selectively.Predetermined threshold can be selected and system can be configured to have the thermostat (not shown) advantageously display is remained in the acceptable temperature range.This is with the useful life longevity of conserve energy cost and device.
Gas curtain
Except aforesaid each heat control parts, also can use air curtain device.Air curtain device can use separately, or uses in conjunction with any parts in aforesaid other heat control parts.
Figure 18 shows electronic console 10, has shell 70 and header board 90.The air register 114 that is used for gas curtain can be seen the broken string of mapping.Also can see section line 19-19 in the figure.
Figure 19 shows along the sectional view of the line 19-19 shown in Figure 18.The figure shows the air circulation of when fan 60 starts, passing through shell 70.As mentioned above, fan 60 51 sucks shell 70 with air by entering the mouth.This air can be that ambient air maybe can be an Air Conditioning.Mobile the showing of inhaled air made arrow 111.In case in display casing 70, but the moving arrow 121 of air longshore current upwards flows.This air can use with any above mentioned heat control parts.For example, this air can be used for cooling off the separation gas in second air chamber (plenum system), or can use with aforesaid limited convection system.
Be illustrative purposes, cavity 61 is omitted and only shown to the details of the internal part of display from this figure.It should be noted that gas curtain can combine enforcement with the electronic console of any kind and above-mentioned heat control parts any.Each internal part (not shown) can be placed in the cavity 61 with air guide baffle plate 114.Inhaled air can continue to pass through cavity 61 till reaching baffle plate 114 along arrow 121, and baffle plate 114 can be against external display surface guiding air.This outside surface can be first header board 90, any other header board of perhaps describing in detail above (as second header board 130).
Therefore, gas curtain can be used as the exhaust apparatus of the internal part that is used to cool off display.As alternative, from the cold air of gas curtain can be used for further cooling off display, loaded by a large amount of daylight or from the outer front surface of the heat transfer of hot-air on every side.
Liquid-cooling system
Figure 20 is the indicative icon of another heat control parts.As recognizing from figure, cooling system 22 comprises a plurality of parts of fluid connection.Preferably, this can be by realizing with a series of pipelines or pipe (conceptually being shown dotted line) link.The parts of cooling system 22 comprise hold-up tank 37, pump 47 and the cooling chamber 4 of fluid connection.Preferably, this system also comprises the filtrator 83 and the heating radiator 72 of same fluid connection.Alternatively, this system also can comprise fan unit 94.Yet, optionally fan unit preferably not with other parts fluid connection.
Hold-up tank 37 preserve the coolant liquid of main amount and have surface area with heat conduction when being included in jars 37 at liquid away from liquid.Jar has at least two openings, outlet 13 and return port 14.Alternatively, hold-up tank comprises ventilating opening 66.Pump 47 makes coolant liquid move through system 22.As those skilled in the art will appreciate that pump 47 can be positioned at a plurality of positions along the coolant liquid path, has suitable result.Yet,, preferably pump 47 is positioned at cooling chamber 4 and makes pump in fact move liquid coolant to top from the bottom suction of cooling chamber 4 afterwards for making the curvature minimum of plate 44 and 128.If pump is located like this, use pump to produce low pressure zone at the top of cooling chamber 4.Like this, liquid is by flowing through cooling chamber 4 shown in the arrow.Because some coolant liquids " smooth ", pump 47 is preferably positive-dispacement pump.
Pass flowing of cooling chamber for regulating coolant liquid, the by-pass line with valve 634 can be provided.By-pass line realizes that the bypass of coolant liquid transmits to walk around cooling chamber 4.Valve 634 is suitable for helping to control the amount that turns to the coolant liquid that passes by-pass line.By-pass line and valve 634 can turn to the predetermined portions of coolant liquid and away from the stream of guiding cooling chamber 4, thereby help to control flow by cooling chamber itself.Like this, scalable is by the flow of cooling chamber.
As skilled in the art will be aware of, other method and apparatus also can be used for regulating the flow of liquid by cooling chamber.For example, can optimize the size and the pump speed of pump 47 at given application.As alternative, also can use speed-variable pump.Preferably, speed-variable pump can with at least one pressure transducer (not shown) electric connection.Preferably, a pressure transducer can be placed on the upstream of cooling chamber 4, and another pressure transducer can be placed on the downstream of cooling chamber 4.The pressure information that at least one pressure transducer provides can be used for being provided with the travelling speed of speed-variable pump.Like this, scalable is passed through the flow of cooling chamber 4 with pressure suitable in the holding device.In cooling chamber 4, keep suitable pressure for preventing the display glass distortion or breaking very important.
Can increase optional filtrator 83 to remove the dirt in the liquid.Preferably, can comprise that also heating radiator 72 and fan unit 94 are to provide better thermal stability.Alternatively, can provide the plug (not shown) to help to fill and empty the process of coolant liquid.
When operation, liquid withdraws from hold-up tank 37 from the delivery outlet 13 that is positioned at jar 37 belows.In the way of going to cooling chamber 4, liquid is by optional filtrator 83.Then, liquid inherent filtration device 83 enters cooling chamber 4 by the inlet 98 of manifold 59.Direction shown in liquid coolant is pressed (dotted arrow) moves up by the liquid chamber of cooling chamber 4.Coolant liquid withdraws from cooling chamber 4 by the outlet 99 of upper manifold 60.Preferably, next liquid received by optional heating radiator 72.When moving through optional heating radiator 72, optionally fan unit 94 can force air to make heat away from coolant liquid by heating radiator 72 to help to conduct heat.Pump 47, it can be positioned at after the heating radiator 72, can attract liquid towards hold-up tank.Liquid is received in the hold-up tank 37 by return port 14.Preferably, return port 14 can be positioned at relatively away from the position of outlet 13 so that the liquid that returns by export 13 withdraw from hold-up tank 37 before the chance maximum of cooling.
If desired, fan unit just can be positioned at the place, bottom at the shell 75 of cooling chamber 4 back of display 15.Fan unit can provide the lamina air flow by the inside of shell 75.Preferably, airflow will be striden at least one outer surface channeling conduct of hold-up tank 37.As mentioned above, exhaust stream finally can be directed on the cooling chamber surface 44 again by means of optional gas curtain system 114.
If desired, temperature sensor (not shown) and switch (not shown) can be combined in the electronic console.Temperature sensor can be used for the time that detected temperatures has reached predetermined threshold.In this case, when reaching predetermined value, the temperature in the display can use pump selectively.Predetermined threshold can be selected and system can be configured to have the thermostat (not shown) advantageously display is remained on relative stationary temperature, perhaps at least within acceptable temperature range.As alternative, for needing avoiding thermostat, pump 47 continuously-runnings when electronic console moves.
Claims (20)
1. be used to have the thermal control system of the electronic console of display surface and backlight assembly, this system comprises:
Be positioned at first air chamber of the front on electronic console surface, described first air chamber has inlet, outlet and outside surface;
Be communicated with and be positioned at second air chamber of the back on electronic console surface with the entrance and exit gas of described first air chamber, described second air chamber has inside surface and outside surface;
One or more chambers fan in second air chamber is used for around the first and second air chamber propelling gass; And
Be used to cool off the device that is included in the separation gas in second air chamber.
2. according to the system of claim 1, the device that wherein is used to cool off separation gas comprises:
Be suitable for air is forced one or more external fans on the outside surface of second air chamber.
3. according to the system of claim 1, also comprise:
Be used to operate electronic console and be included in the interior one or more electronic components of described second air chamber.
4. according to the system of claim 2, also comprise:
One or more surface elements on the outside surface of second air chamber.
5. according to the system of claim 1, also comprise:
Be used for the device that heat packs is contained in the gas in second air chamber.
6. according to the system of claim 5, wherein:
Be used for device that heat packs is contained in the gas in second air chamber and comprise one or more heating elements in second air chamber.
7. according to the system of claim 1, wherein:
The outside surface next-door neighbour backlight assembly of second air chamber, the space between backlight assembly and the outer chamber surface forms the gap, and described system also comprises:
Be suitable for the one or more limited convection current fan of suction air by described gap.
8. according to claim 1-4 and 7 arbitrary described systems, also comprise:
Be suitable for forcing air to cross over the air curtain device of the outside surface of described first air chamber.
9. according to claim 1-4 and the arbitrary described system of 7-8, also comprise:
Be placed on the linear polariser of the described first air chamber front.
10. according to the arbitrary described system of claim 2-9, also comprise:
Be suitable for measuring the temperature-sensing device of display surface temperature;
The switch that is communicated with described temperature-sensing device and described chamber and external fan; And
Wherein when reaching threshold value, connects display surface described fan.
11., also comprise according to the arbitrary described system of claim 1-10:
Filtrator in second air chamber.
12. according to claim 2-4 and the arbitrary described system of 7-11, wherein:
Described one or more external fan will carry out the air of artificial atmosphere and force on the outside surface of second air chamber.
13. the thermal control electronic console comprises:
Display group;
Be positioned at the back of described display group and have the backlight assembly of rear surface;
Be close to the limited convection current plate of the rear surface of described backlight assembly, the space between the rear surface of convection current plate and backlight assembly forms the gap;
Be suitable for the one or more limited convection current fan of suction air by described gap;
Be positioned at the first anti-reflective glass plate of the front of described display group, the space between described anti-reflective glass plate and the described display group forms heat insulation gap;
Be positioned at the linear polariser of the front of described first plate; And
Be positioned at the second anti-reflective glass plate of the front of described linear polariser.
14. the display according to claim 13 also comprises:
Be suitable for air is forced air curtain device on the second anti-reflective glass plate.
15. according to the display of claim 13 or 14, wherein said backlight assembly comprises:
Printed circuit board (PCB) with front surface and rear surface;
Be attached to a plurality of light emitting diodes of the front surface of described printed circuit board (PCB); And
Be applied to the metallic coating of the rear surface of described printed circuit board (PCB).
16., also comprise according to the arbitrary described display of claim 13-15:
Comprise described heat insulation gap and have first air chamber of entrance and exit;
Be communicated with and be positioned at second air chamber of the back on electronic console surface with the entrance and exit gas of described first air chamber, described second air chamber has inside surface and outside surface;
One or more chambers fan in described second air chamber is used for around the first and second air chamber propelling gass; And
Be used to cool off the device that is included in the gas in second air chamber.
17. be used for the method that heat control has the electronic console of display surface and backlight assembly, comprise step:
The separation gas system that comprises first air chamber and second air chamber is provided, and first air chamber contacts with the electronic console surface, and both second air chamber was communicated with the described first air chamber gas;
Separation gas is forced into first air chamber;
Heat is passed to separation gas from the electronic console surface;
Separation gas is imported second air chamber;
The separation gas in second air chamber is then cooled off in cooling if desired; And
Separation gas is introduced first air chamber again.
18. according to the method for claim 17, wherein cooling step comprises the steps:
Heat is passed to the wall of second air chamber from separation gas;
Air is forced on the wall of second air chamber; And
The wall of heat from second air chamber passed to the air.
19., also comprise step according to the method for claim 17:
The separation gas in second air chamber is then heated in heating if desired.
20., also comprise step according to the arbitrary described method of claim 17-19:
Limited convection current plate is provided in the back of backlight assembly, and the zone between limited convection current plate and the backlight assembly forms the gap;
Force air to pass through described gap with the cooling backlight assembly.
Applications Claiming Priority (24)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/941,728 | 2007-11-16 | ||
| US11/941,728 US8004648B2 (en) | 2007-11-16 | 2007-11-16 | Air curtain for display |
| US3306408P | 2008-03-03 | 2008-03-03 | |
| US3305808P | 2008-03-03 | 2008-03-03 | |
| US61/033,058 | 2008-03-03 | ||
| US61/033,064 | 2008-03-03 | ||
| US3945408P | 2008-03-26 | 2008-03-26 | |
| US61/039,454 | 2008-03-26 | ||
| US5371308P | 2008-05-16 | 2008-05-16 | |
| US61/053,713 | 2008-05-16 | ||
| US5759908P | 2008-05-30 | 2008-05-30 | |
| US61/057,599 | 2008-05-30 | ||
| US7612608P | 2008-06-26 | 2008-06-26 | |
| US61/076,126 | 2008-06-26 | ||
| US12/191,834 | 2008-08-14 | ||
| US12/191,834 US8208115B2 (en) | 2007-11-16 | 2008-08-14 | Fluid cooled display |
| US12/234,307 | 2008-09-19 | ||
| US12/234,360 US20090126914A1 (en) | 2007-11-16 | 2008-09-19 | Isolated Gas Cooling System for Cooling Electrical Components of an Electronic Display |
| US12/234,360 | 2008-09-19 | ||
| US12/234,307 US8767165B2 (en) | 2007-11-16 | 2008-09-19 | Isolated gas cooling system for an electronic display |
| US12/235,200 | 2008-09-22 | ||
| US12/237,365 | 2008-09-24 | ||
| PCT/US2008/083792 WO2009065125A2 (en) | 2007-11-16 | 2008-11-17 | System and method for thermally controlling an electronic display |
| US61/115,333 | 2008-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101971081A true CN101971081A (en) | 2011-02-09 |
| CN101971081B CN101971081B (en) | 2013-05-08 |
Family
ID=43548816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880124923.0A Expired - Fee Related CN101971081B (en) | 2007-11-16 | 2008-11-17 | System and method for thermally controlling an electronic display |
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| Country | Link |
|---|---|
| CN (1) | CN101971081B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882068A (en) * | 2015-06-04 | 2015-09-02 | 肖叶 | Intelligent wireless cementing machine display control screen |
| CN108347857A (en) * | 2017-01-24 | 2018-07-31 | 晶达光电股份有限公司 | Double-side display device |
| CN108968533A (en) * | 2018-08-10 | 2018-12-11 | 昆山弘锦威电子有限公司 | A kind of liquid crystal display semi-finished product storage facility |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5991153A (en) * | 1997-10-31 | 1999-11-23 | Lacerta Enterprises, Inc. | Heat transfer system and method for electronic displays |
| FI116491B (en) * | 2004-02-16 | 2005-11-30 | Inssimainos Oy | Method and apparatus for controlling the temperature of a display surface |
| JP2006017799A (en) * | 2004-06-30 | 2006-01-19 | Hitachi Ltd | Liquid crystal projector, its liquid crystal panel and its liquid cooling device |
-
2008
- 2008-11-17 CN CN200880124923.0A patent/CN101971081B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882068A (en) * | 2015-06-04 | 2015-09-02 | 肖叶 | Intelligent wireless cementing machine display control screen |
| CN108347857A (en) * | 2017-01-24 | 2018-07-31 | 晶达光电股份有限公司 | Double-side display device |
| CN108968533A (en) * | 2018-08-10 | 2018-12-11 | 昆山弘锦威电子有限公司 | A kind of liquid crystal display semi-finished product storage facility |
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| Publication number | Publication date |
|---|---|
| CN101971081B (en) | 2013-05-08 |
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