CN103477383B - Display device - Google Patents

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Publication number
CN103477383B
CN103477383B CN201180069927.5A CN201180069927A CN103477383B CN 103477383 B CN103477383 B CN 103477383B CN 201180069927 A CN201180069927 A CN 201180069927A CN 103477383 B CN103477383 B CN 103477383B
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CN
China
Prior art keywords
air
framework
cooling
display
display panel
Prior art date
Application number
CN201180069927.5A
Other languages
Chinese (zh)
Other versions
CN103477383A (en
Inventor
安田健三
Original Assignee
株式会社阿西斯特
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社阿西斯特 filed Critical 株式会社阿西斯特
Priority to PCT/JP2011/058991 priority Critical patent/WO2012140714A1/en
Publication of CN103477383A publication Critical patent/CN103477383A/en
Application granted granted Critical
Publication of CN103477383B publication Critical patent/CN103477383B/en

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20954Modifications to facilitate cooling, ventilating, or heating for display panels
    • H05K7/2099Liquid coolant with phase change
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133382Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G02F1/133385Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals

Abstract

The object of the present invention is to provide a kind of display panels such as liquid crystal panel can be accommodated in framework and the image shown the panel in framework from outside or image carry out the display device of order identification, its efficiently and the high temperature reliably preventing the direct projection due to sunshine from causing, the high temperature that causes from the heating of display panel and the blank screen phenomenon of the display panel occurred.The feature of display device of the present invention is to possess: framework; Display panel (10), it is incorporated in this framework and shows image or image; Order identification part (6), it is formed at a part for the framework opposed with this display panel, and by can being formed the transparent component that order identification is carried out in framework inside; Air conditioner, it forms heat pump cycle; With cooling-air feed unit (46,48), it makes the cooling-air after by the described evaporator cools of this air conditioner, circulates downwards from the top of display panel in the space (47) between described order identification part and described display panel.

Description

Display device
Technical field
The present invention relates to display device, specifically relate to the display device of the panel that there is framework and be accommodated in the display in this framework.
Background technology
Known following display device: possess framework and be accommodated in the panel showing image or image in this framework, by described framework is set to the order identification part formed by transparent materials such as glass at least partially, the image that can show from outside the panel in framework or image carry out order identification.
In such display device, such as, when described panel is liquid crystal panel, produce heat, framework internal high temperature due to the environment of framework outside or the work of liquid crystal panel in framework inside.So, if framework internal high temperature, the temperature of the display surface of liquid crystal panel becomes more than about 65 DEG C, then there is blank screen (blackout) phenomenon of surperficial melanism and become and can not show image or image, or condense at the inner face of the order identification part formed by transparent materials such as glass, there is the situation of the function that can not realize as display device.
In order to prevent blank screen phenomenon, can expect arranging in framework being communicated with the inside and outside airport of framework.This is because can expecting by arranging this airport, the air of framework inside by high temperature can discharge to framework outside, reducing the air themperature of framework inside.But, when by display device configurations without, if arrange airport in framework, when the rainy day, rain may enter into inside, does not thus preferably arrange airport in framework.Therefore, if also consider display device configurations situation without, then need, under the state that framework is airtight, to prevent the blank screen phenomenon of panel.
Therefore, known air conditioner is set in framework inside, by this air conditioner by the temperature (such as 30 ~ 35 DEG C) of framework inner sustain in regulation, prevents the technology of the blank screen phenomenon of liquid crystal panel.
Such as, disclosed in patent documentation 1, technology possesses: the support (stand) of hollow, by the framework of housing panels in inside of display image or image, control the computing machine of the signal of image or the image shown on the panel and form the air conditioner of heat pump cycle (Heat Pump Cycle).Further, the support of hollow is connected with the bottom surface of framework.In addition, allocation of computer, in framework, forms the evaporator of air conditioner and is connected with the peristome of the bottom panel of framework, forms the compressor configuration of air conditioner on the bottom panel of described support.In addition, in patent documentation 1, structure, the structure of computer installation in the outside of framework that hollow stent is not set is also disclosed.
By air conditioner, the temperature in framework is remained set point of temperature in it is possible to the change for state of weather.
[at first technical literature]
[patent documentation]
Patent documentation 1:JP spy table 2008-519291 publication
Summary of the invention
[inventing the problem that will solve]
But, because prior art disclosed in patent documentation 1, it is the bottom surface from framework, or spray cold air from the back side of the display panel showing image or image, inner for framework entirety is remained the temperature of regulation, so the face side of display panel, particularly top due to the heat sent from display panel high temperature, thus in order to prevent the high temperature on the top at this display panel, air conditioner needs ability.Therefore there is air conditioner to maximize, the problem that display device maximizes.
Therefore, the present invention is in view of the problem points of such prior art, object is to obtain a kind of display panel by liquid crystal panel etc. and is accommodated in framework and the image that can show the panel in framework from outside or image carry out the display device of order identification, its efficiently and the high temperature reliably preventing the direct projection due to sunshine from causing, the high temperature that causes from the heating of display panel and the blank screen phenomenon of display panel that occurs.
[solving the means of problem]
In order to solve above-mentioned problem, the feature of display device of the present invention is to possess: framework; Display panel, it is incorporated in this framework and shows image or image; Order identification part, it is formed at a part for the described framework opposed with this display panel, and by can being formed the transparent component that order identification is carried out in framework inside; Air conditioner, it connects compressor, condenser, expansion valve and evaporator and makes cold-producing medium circulate in such devices thus form heat pump cycle; With cooling-air feed unit, it makes the cooling-air after by the described evaporator cools of this air conditioner, circulates downwards between described order identification part and described display panel above display panel.
According to this invention, by making the cooling-air after by evaporator cools between order identification part and display panel, and flow from the top to the bottom, the Air flow thus the display surface of display panel is cooled, can remain on the set point of temperature of such as 30 ~ 35 DEG C of grades by the temperature of display panel.
Particularly, due to the heat that sends from display panel thus upper pyrometer, therefore by making flow of cooling air downwards from the top of this display panel, cooling-air can be made effectively to contact display panel, effectively carry out the cooling of display panel.
Thereby, it is possible to the blank screen phenomenon of airtight the caused display panel caused by high temperature that the preventing hydration in the high temperature of the display surface of the panel effectively preventing the direct projection of sunshine from causing, framework carries out.
And then, by making cooling-air circulate between order identification part and display panel, the condensation produced due to the temperature difference with order identification part exterior side at order identification part inner face also can be prevented.
In addition, because the space without the need to cooling in framework is overall, as long as make cooling-air flow between order identification part and display panel, therefore air conditioner does not need high cooling power, by air conditioner miniaturization, and can prevent the maximization of display device.
In addition, the present invention also can possess and adds hot-air feed unit, this adds the extraneous air of hot-air feed unit by the described condenser heating frame external body of described air conditioner, to add hot-air at least partially after being heated by described condenser, the outer surface of guiding described order identification part into makes it circulate along this outer surface.
When the extraneous air after not making heating is along the outside surface flowing of order identification part, can infer because cooling-air flows through space between described order identification part and display panel, therefore the outside surface of order identification part becomes lower than the peripheral temperature outside framework.In this case, if the outside surface of order identification part becomes below dewpoint temperature, then can produce condensation by the outside surface in order identification part, the order identity across the panel of order identification part worsens.Therefore, circulate along the framework outer surface of described order identification part by making the warmed-up hot-air that adds, even if cooling-air flows through described space thus the inner face of order identification part is cooled, the outside surface of order identification part also heated air is heated and can be remained on more than dewpoint temperature.Thereby, it is possible to prevent the generation of the condensation on surface, order identification part.In addition, due in the air conditioner forming heat pump cycle, the heat interchange in condenser is required, carries out heat interchange and the heat that obtains therefore, it is possible to effectively utilize by condenser.
In addition, the present invention also can be, described in add hot-air feed unit, the flowing of the cooling-air adding hot-air described in making and circulated between described order identification part and described display panel by described cooling-air feed unit is circulated equidirectionally.
Flow through the cooling-air in the space between described order identification part and display panel, owing to flowing through space, heat that is inner by framework, panel is heated.On the other hand, hot-air is added described in also owing to being cooled along the flowing of described order identification part by extraneous air, order identification part.
That is, the cooling draught in described space more flows to upstream side, and the temperature of the cooling-air in space is lower, will easily condense in the outside, order identification part of this position.Therefore, due to by add described in making flowing in hot-air and described space equidirectional circulate, can making warmer to add hot-air easily there is the position circulation of condensation, thus can prevent the generation of the condensation in outside, order identification part more reliably.
In addition, the present invention also can possess described air conditioner to be accommodated in an air conditioner housing and carries out blocking, and be configured in the air-conditioning unit of described framework inside, described air-conditioning unit is configured in below compared with described display panel, described cooling-air feed unit, by described framework be arranged on compared with described display panel top cooling-air fan diffuser and be arranged at described cooling-air fan diffuser and form to the slit of opening between described order identification part and display panel.
Like this, be configured in framework in as air-conditioning unit because air conditioner is accommodated in after carrying out blocking in an air conditioner housing, so when forming the fault of compressor, evaporator etc. of heat pump cycle, the time of maintenance, can change according to each unit as air-conditioning unit, therefore wiring and pipe distribution operation facilitation, corresponding facilitation during unit failure, when safeguarding.
In addition, the cooling-air of described cooling-air from the top down between described order identification part and display panel after circulation is made can to flow to the position of the close air-conditioning unit in lower panels setting.Thus, the circulation of cooling-air becomes easy.
In addition, because the weight of air conditioner is large, therefore by carrying out blocking and being arranged on compared with display panel more below, foot in framework is preferably, thus without the need to increasing the intensity of supporting member for keeping air conditioner etc.Thereby, it is possible to prevent the maximization of display device.
In addition, the present invention also can be, described air-conditioning unit, arranges at the upper surface of described air conditioner housing the inner air taking mouth inner air in framework being taken into described evaporator.
Thus, inner air taking mouth becomes close to the position by the cooling-air after between order identification part and display panel, and the circulation of cooling-air becomes easy.
In addition, the present invention also can be, forms the rear panel in the face of the opposition side of the order identification part of described framework and the integration of described air-conditioning unit and is formed.
Thus, air conditioner fault, safeguard time, can by more bringing correspondence to the integrated object of rear panel and air-conditioning unit, the fault of air conditioner, correspondence when safeguarding become easy.In addition, if by by the path of the cooled cooling-air of air conditioner and rear panel integration, as long as so take off rear panel when air-conditioning unit is changed, without the need to carrying out the dismounting etc. of path, fault, correspondence when safeguarding become easier.
In addition, the present invention also can be, described air-conditioning unit, the extraneous air suction inlet described extraneous air being taken into described condenser is set in the side of described air conditioner housing, and, the described framework opposed with the extraneous air suction inlet of this air conditioner housing is formed with extraneous air taking mouth, and this extraneous air taking mouth is formed in the framework side of the opposition side of described order identification part.
People are in order to watch the image or image that show on panel and to stand on the situation in the front, order identification part of framework outside more.Therefore, extraneous air taking mouth is set by the framework side of the opposition side in order identification part, the flowing of air can not occur in the front, order identification part that people stands more.Thus, reliably carry out from framework being taken into externally to the air in air-conditioning unit.
In addition, the present invention also can possess: the cooling air temperature meter detecting the temperature of the cooling-air circulated between described order identification part and display panel; Based on the detected value of described cooling air temperature meter, control the temperature control equipment of the cooling air temperature circulated between described order identification part and display panel; With the environmental information dispensing unit that the inside of framework and the environmental information of outside of the detected value by comprising the described cooling air temperature being input to this temperature control equipment are provided and delivered via the network network equipment externally.
Thereby, it is possible to the temperature of the cooling-air circulated between order identification part and display panel is remained constant, make air conditioner continuous running.
In addition, comprise the detected value of described cooling air temperature meter, by by the environmental information of the temperature of the inside of framework and outside, humidity etc. via network network equipment dispensing externally, can state inside and outside exterior monitoring framework.
Such as, when configuring multiple display device, as long as by the detected value of the thermometer of the framework inside in multiple display device place separately, outside atmospheric temperature value via the network equipment dispensing of 1 network to other, just can in the duty of the multiple display device of other site management.
In addition, the present invention also can be, is accommodated in by described air conditioner in an air conditioner housing and forms air-conditioning unit, and in this air-conditioning unit, also receive the described temperature control equipment of configuration and described environmental information dispensing unit.
Like this, by in air-conditioning unit, storage configuration temperature control equipment and environmental information dispensing unit, thus each air-conditioning unit can move, become easy to the correspondence of the size of display device, the change of setting place, the degree of freedom of the design of display device is improved.
[invention effect]
According to the present invention, the blank screen phenomenon of carry out airtight of the preventing hydration in the high temperature of the display surface of the panel that can effectively prevent the direct projection due to sunshine from causing, framework and the display panel caused by high temperature in the framework that occurs, and the generation of the condensation at order identification part inner face can be prevented, and then, air conditioner can be configured to small-sized, prevent the maximization of display device.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of the display device represented involved by embodiment 1.
Fig. 2 is the stereographic map representing conditioner (air conditioning).
Fig. 3 is the process flow diagram of conditioner inside.
Fig. 4 is the 1st key diagram of the formation that framework inside is described.
Fig. 5 is the 2nd key diagram of the formation that framework inside is described.
Fig. 6 is the 3rd key diagram of the formation that framework inside is described.
Fig. 7 is the A portion enlarged drawing in Fig. 4.
Fig. 8 is the key diagram of the formation of the framework inside represented in embodiment 2.
Embodiment
Below, with reference to accompanying drawing, applicable embodiment of the present invention is described in detail illustratively.But the size, material, shape, its relative configuration etc. of the component parts recorded in this embodiment, as long as no especially specifically recording, just do not mean that scope of the present invention is defined in this, only illustrative examples.
(embodiment 1)
First, the summary of Fig. 1 and Fig. 2 to the formation of the display device involved by embodiment is utilized to be described.
Fig. 1 is the exploded perspective view of the display device represented involved by embodiment 1.
Display device 1 involved by embodiment has framework 2, panel (display panel) 10, air-conditioning unit 12 and forming.
Framework 2, by combining main casing (main case) 4, tempered glass 6 and door 8 and be configured to casing.Tempered glass 6 can carry out the such transparent tempered glass of order identification from outside by the inside of tempered glass 6 pairs of frameworks 2.In addition, door 8 is in order to carry out opening and closing when carrying out inspection etc. to the inside of framework 2 and arrange.
Panel 10 is the panels for showing image or image, can use liquid crystal panel or Plasmia indicating panel etc.
Refrigerant circulation road 42 described later, the compressor 32 be configured on refrigerant circulation road 42, condenser 34, expansion valve 36 and evaporator 38 and other equipment forming heat pump cycle are accommodated in housing (air conditioner housing) 13 and form by air-conditioning unit (air-conditioning unit) 12 integratedly.So, air-conditioning unit 12, for utilizing heat pump cycle to cool the air of framework inside, and the air of heating frame external body.
Fig. 2 is the stereographic map representing air-conditioning unit 12.As shown in Figure 2, in air-conditioning unit 12, be respectively arranged with at housing 13 upper surface sucked by the inner air of framework 2 inside inner air taking mouth 14 and will be taken into from inner air taking mouth 14 and the cooling-air discharge opening 16 that spues to framework 2 inside of chilled cooling-air.In addition, the extraneous air suction inlet 18 sucked by the extraneous air of framework 2 outside via the extraneous air taking mouth 24 be arranged on door 8, is arranged in housing 13 side opposedly with extraneous air taking mouth 24.In addition, will be taken into from extraneous air suction inlet 18 and warmed-up add that hot-air spues outside air-conditioning unit 12 add hot-air discharge opening 20, arrange in housing 13 side opposedly with discharge opening 26.In addition, 22 is display parts of the operating condition representing air-conditioning unit 12.
Because air-conditioning unit 12 has compressor 32, condenser 34, expansion valve 36, evaporator 38 and forming therein, so when forming the fault of compressor 32, evaporator 38 etc. of heat pump cycle, the time of maintenance, can change according to each unit as air-conditioning unit 12, therefore wiring and pipe distribution operation facilitation, during the fault of parts, the correspondence in the time of maintenance becomes easy.
Then, the principle of Fig. 3 to the cooling of the inner air of the heat pump cycle employed in air-conditioning unit 12 and the heating of extraneous air is utilized to be described.Fig. 3 is the process flow diagram of the inside of air-conditioning unit 12.In figure 3, the equipment being in the scope be surrounded by dotted line c is incorporated in housing 13.
As shown in Figure 3, air-conditioning unit 12 has compressor 32, condenser 34, expansion valve 36, evaporator 38 and forming therein.In addition, compressor 32, condenser 34, expansion valve 36 and evaporator 38, at CO 2carry out Deng cold-producing medium the refrigerant circulation road 42 of circulating is configured to above-mentioned order.In addition, be provided with the bypass 41 connecting compressor 32 outlet and evaporator 38 entrance, bypass 41 is provided with bypass expansion valve 40.
Compressor 32 operates, and makes the cold-producing medium spued from compressor 32 become the supercriticality exceeding the emergent pressure of this cold-producing medium and the High Temperature High Pressure of critical temperature.In compressor 32, become the cold-producing medium of supercriticality, arrive condenser 34 by refrigerant circulation road 42.
Reach the cold-producing medium of condenser 34, cooled condensation by the extraneous air a be taken into from extraneous air suction inlet 18, be changed to the liquid of high pressure.Curdy cold-producing medium in condenser 34, arrives expansion valve 36 by refrigerant circulation road 42.On the other hand, extraneous air a is heated by carrying out heat interchange at the cold-producing medium of condenser 34 and supercriticality, becomes hot blast and is discharged as adding hot-air from air-conditioning unit 12.
In condenser 34, be changed to the cold-producing medium of the liquid of high pressure, be depressurized in expansion valve 36 and be changed to the liquid of low pressure.In expansion valve 36, be changed to the cold-producing medium of the liquid of low pressure, arrive evaporator 38 by refrigerant circulation road 42.
Reach the cold-producing medium of evaporator 38, absorb heat from the inner air b be taken into by inner air taking mouth 14 and evaporate.Vaporized cold-producing medium in evaporator 38, arrives compressor 32 by refrigerant circulation road 42.On the other hand, inner air b is cooled by absorbing heat in cooled dose of evaporator 38, becomes cooling-air, is blown as will be described later by evaporator fan 39.
In addition, bypass 41, bypass expansion valve 40 is used as required, to make the temperature constant by the cooled cooling-air of evaporator 38.In this case, not by the cold-producing medium that condenser 34 cools, carry out expanding at bypass expansion valve 40 thus be changed to the liquid of low pressure, arriving evaporator 38 with temperature than the state higher by the situation of expansion valve 36.Bypass expansion valve 40, based on cooling air temperature meter 72 detected temperatures and controlled by temperature control equipment 70, make the detected temperatures of the cooling air temperature meter 72 in cooling-air fan diffuser 46 described later become set point of temperature.
By controlling the aperture of bypass expansion valve 40, carry out making the control by the temperature constant of the cooled cooling-air of evaporator 38 while the operating condition of the compressor 32 of air-conditioning unit 12 can be kept.Thus, due to the control of the on-off of repeated compression machine 32 need not be carried out, therefore, it is possible to the temperature stably obtaining cooling-air controls.
In addition, be taken into the detected value of the cooling air temperature meter 72 of temperature control equipment 70, provided and delivered via network 75 network equipment 76 externally by environmental information dispensing unit 74.By utilizing network 75 to provide and deliver the detected value of cooling air temperature meter 72, can air themperature state in the exterior monitoring framework 2 of framework 2.
And then, such as, configure multiple display device, as long as the detected value of multiple display device cooling air temperature meter 72 is is separately provided and delivered via the network equipment 76 of network 75 to other, just can in the state of the multiple display device of other location management.
In addition, except described cooling air temperature meter 72, not shown cooling-air hygrometer, the external temperature meter of the information relevant with extraneous air, the outer moisture meter of more than 1 also can be set, and carry out the temperature of controlled cooling model air based on the detected value of these thermometers, hygroscopic detected value and described cooling air temperature meter 72.
Serviceability temperature meter, hygrometer detect the air condition of the inside of framework 2 and the air condition of outside like this, and the temperature using this information to carry out cooling-air controls, and can carry out extremely meticulous temperature thus and control.
And then, by the environmental information by the air condition of the inside with framework 2 and the relevant temperature, humidity etc. of the air condition of outside, provided and delivered via network 75 by environmental information dispensing unit 74, thus the inside of multiple display device and the ambient condition of outside can be held in detail in other place, and multiple display device can be managed based on these data.
In addition, in air-conditioning unit 12, storage is configured with described temperature control equipment 70 and described environmental information dispensing unit 74.By in air-conditioning unit 12, storage configuration temperature control equipment 70 and environmental information dispensing unit 74, can move according to each air-conditioning unit 12, thus become easy to the correspondence of the size of display device 1, the change of setting place, the degree of freedom of the design of display device 1 is improved.
Then, the formation of the framework inside forming display device 1 is described in detail.
Fig. 4 is the 1st key diagram of the formation that framework inside is described, is the left surface 12a of the air-conditioning unit 12 shown in left surface 4a, Fig. 2 representing the main casing 4 shown in omission (taking off) Fig. 1 and the key diagram of the summary of the left surface of the display device 1 involved by embodiment 1 described.
Fig. 5 is the 2nd key diagram of the formation that framework inside is described, is the right flank 12b of the air-conditioning unit 12 shown in right flank 4b, Fig. 2 representing the main casing 4 shown in omission (taking off) Fig. 1 and the key diagram of the summary of the right flank of the display device 1 involved by embodiment 1 described.
Fig. 6 is the 3rd key diagram of the formation that framework inside is described, is to represent the back side 12c of the door 8 shown in omission (taking off) Fig. 1, the air-conditioning unit 12 shown in Fig. 2 and the key diagram of the summary at the back side of the display device 1 involved by embodiment 1 described.
Fig. 7 is the A portion enlarged drawing in Fig. 4.
As shown in Fig. 4 and Fig. 6, be connected with flexible pipe 44 at cooling-air discharge opening 16.Flexible pipe 44 is connected with the cooling-air fan diffuser 46 being arranged on framework 2 inner upper.Cooling-air fan diffuser 46 as shown in Figure 6, is arranged at the scope of the Width entirety spreading all over panel 10, is provided with the cooling-air ejiction opening 48 spraying the slit-shaped of inner air to the space 47 between panel 10 and tempered glass 6 in its underpart.
By the cooling-air ejiction opening 48 of cooling-air fan diffuser 46 and slit-shaped, be formed in the cooling-air feed unit 53 of ejection cooling-air downwards between order identification part and display panel.
In addition, as shown in Figure 5, add hot-air discharge opening 20 be connected with add hot-air fork road 52.Add hot-air fork road 52 to be connected with the discharge opening 26 being arranged on door 8, and arrive the booster fan (booster fan) 54 being arranged on the inside of framework 2.At the exhaust end of booster fan 54, be connected with heating air flue 60.Heating air flue 60 is connected with the hot air diffuser 56 that adds on the top being arranged on framework 2.Add hot air diffuser 56 as shown in Figure 6, be arranged at the scope of the Width entirety spreading all over panel 10, and be provided with along tempered glass 6 outside surface ejection air add hot-air ejiction opening 58.
By adding hot air diffuser 56 and adding hot-air ejiction opening 58, form along tempered glass 6 outside surface ejection air add hot-air feed unit 59.
In the display device 1 of above formation, on evaporator 38, cooled dose absorbs hot and cooled cooling-air, is blown by evaporator fan 39.By the cooling-air that evaporator fan 39 is blown, be supplied to cooling-air fan diffuser 46 via cooling-air discharge opening 16, flexible pipe 44.Be supplied to the cooling-air of cooling-air fan diffuser 46, spray downwards from the space 47 of cooling-air ejiction opening 48 between tempered glass 6 and panel 10.To space 47 spray cooling-air flow through space 47 from top to bottom after, again sucked by evaporator 38 via inner air taking mouth 14.
Namely, cooling-air, circulate according to the order of evaporator 38 → evaporator fan 39 → cooling-air discharge opening 16 → flexible pipe 44 → cooling-air fan diffuser 46 → cooling-air ejiction opening 48 → space 47 → inner air taking mouth, 14 → evaporator 38.
The cooling-air cooled by evaporator 38 flows through space 47, the Air flow thus panel 10 is cooled, and the temperature of panel 10 can be remained set point of temperature (such as 30 ~ 35 DEG C).Thereby, it is possible to prevent the blank screen phenomenon of panel 10.In addition, due to overall without the need to cooling in framework 2, as long as make the space 47 of cooling-air between tempered glass 6 and panel 10 flow, therefore air-conditioning unit 12 does not need high cooling power, can be configured to small-sized by air-conditioning unit 12.
On the other hand, from the extraneous air that the extraneous air taking mouth 24 be arranged on door 8 is taken in framework 2, after the air strainer 50 be arranged between extraneous air taking mouth 24 and extraneous air suction inlet 18 removes the impurity of dust, dust etc., be inhaled in air-conditioning unit 12 from extraneous air suction inlet 18.
Being drawn into the extraneous air in air-conditioning unit 12, after condenser 34 delivered to by the device fan 35 that is condensed, being heated by carrying out heat interchange at condenser 34 and described cold-producing medium.The extraneous air heated by condenser 34, become add hot-air and be drawn towards add hot-air fork road 52.Be drawn towards add hot-air fork road 52 add hot-air, a part is discharged framework 2 from discharge opening 26, and a remaining part to be supplied to by heating air flue 60 by booster fan 54 and to add hot air diffuser 56.Be supplied to add hot air diffuser 56 add hot-air, from adding the downwardly side ejection of hot-air ejiction opening 58 along tempered glass 6.
Namely, hot-air is added, according to the sequential flowing on extraneous air taking mouth 24 → air strainer 50 → condenser fan 35 → condenser 34 → add hot-air fork road 52.Flow through add hot-air fork road 52 add hot-air, a part is externally discharged from discharge opening 26, and a remaining part is according to booster fan 54 → heating air flue 60 → add hot air diffuser 56 → add hot-air ejiction opening 58 → along the sequential flowing of framework 2 outside of the outside surface of tempered glass 6.
When the outside surface not along tempered glass 6 flow through add hot-air, can infer due to cooling-air that to flow through the outside surface of space 47 and tempered glass 6 lower than the peripheral temperature outside framework 2.In this case, if the outside surface of tempered glass 6 becomes below dewpoint temperature, then can produce condensation at the outside surface of tempered glass 6, the order identity across the panel 10 of tempered glass 6 worsens.
In the present embodiment, flowed along the outside surface of tempered glass 6 by the hot-air that adds heated by condenser 34, even if thus flow through space 47 and the inner face of tempered glass 6 is cooled due to cooling-air, the outside surface of tempered glass 6 also heated air is heated, and can remain on more than dewpoint temperature.Thereby, it is possible to prevent the generation of the condensation on tempered glass 6 surface.
(embodiment 2)
With reference to Fig. 8, embodiment 2 is described.Fig. 8 is the figure corresponding with Fig. 4, is the left surface 12a of the air-conditioning unit 12 shown in left surface 4a and Fig. 2 representing the main casing 4 shown in omission (taking off) Fig. 1 and the key diagram of the summary of the left surface of the display device 1 described.In addition, in fig. 8, the symbol identical with Fig. 1 ~ Fig. 7 represents same object, and the description thereof will be omitted.
In embodiment 2, air-conditioning unit 12 is integrated with the rear panel in face of opposition side and door 8 that form tempered glass 6 and form.In addition, flexible pipe 44 with and door 8 carry out integrated path of cool air 45 and connect.Path of cool air 45, is communicated with cooling-air fan diffuser 46 via cooling-air communication port 51 when closing door 8.In addition, 49 is cushions of the impact of collision for relaxing cooling-air fan diffuser 46 and path of cool air 45 when door 8 opening and closing.
According to embodiment 2, air-conditioning unit 12 fault, safeguard time, can come corresponding by the integrated object changing door 8 and air-conditioning unit 12, the fault of air-conditioning unit 12, correspondence when safeguarding are easy.And, because by the path of cooling-air that cooled by air-conditioning unit 12 and path of cool air 45 and door 8 integration, so when air-conditioning unit 12 is changed by taking off door 8 thus path of cool air 45 and door 8 are removed integratedly, therefore without the need to path of cool air 45 being taken off in addition, fault, correspondence when safeguarding become and are more prone to.
[industrial applicibility]
According to the present invention, the blank screen phenomenon of carry out airtight of the preventing hydration in the high temperature of the display surface of the panel that can effectively prevent the direct projection due to sunshine from causing, framework and the display panel caused by high temperature in the framework that occurs, and the generation of the condensation at order identification part inner face can be prevented, and then, because air conditioner can be configured to small-sized, so be applicable to being used in the display device of display panel with display image, image.
[symbol description]
1 display device
2 frameworks
6 tempered glasses (order identification part)
8 (rear panel)
10 panels (display panel)
12 air-conditioning units (air-conditioning unit)
13 housings (air conditioner housing)
14 inner air taking mouth
16 cooling-air discharge openings
32 compressors
34 condensers
36 expansion valves
38 evaporators
46 internal air diffusers
48 inner air ejiction openings (slit)
53 cooling-air feed units
59 add hot-air feed unit
70 temperature control equipments
74 environmental information dispensing unit

Claims (7)

1. a display device, possesses:
Framework;
Display panel, it is accommodated in this framework and shows image or image;
Order identification part, it is formed at a part for the described framework opposed with this display panel, and by can being formed the transparent component that order identification is carried out in framework inside;
Air conditioner, it connects compressor, condenser, expansion valve and evaporator and makes cold-producing medium circulate in such devices thus form heat pump cycle, and it is inner to be arranged at described framework; With
Cooling-air feed unit, it makes the cooling-air after by the described evaporator cools of this air conditioner, circulates downwards between described order identification part and described display panel above display panel,
The feature of this display device is,
Possess and add hot-air feed unit, it heats this extraneous air by the described condenser of described air conditioner after being sucked by extraneous air of framework outside, hot-air will be added at least partially after being heated by described condenser, the outer surface of guiding described order identification part into makes it circulate along this outer surface
This adds hot-air feed unit in the scope that the top of framework is arranged on the Width entirety spreading all over described display panel, and possess and add hot-air ejiction opening, this adds hot-air ejiction opening and add hot-air described in the top being drawn towards framework, and the outer surface in order identification part and described cooling-air spray equidirectionally from the top to the bottom.
2. display device according to claim 1, is characterized in that,
Possess described air conditioner to be accommodated in an air conditioner housing and carry out blocking, and be configured in the air-conditioning unit of described framework inside,
Described air-conditioning unit is configured in below compared with described display panel,
Described cooling-air feed unit is made up of such as lower component:
The cooling-air fan diffuser being arranged on top compared with described display panel in described framework; With
Be arranged at described cooling-air fan diffuser and to the slit of opening between described order identification part and display panel.
3. display device according to claim 2, is characterized in that,
Described air-conditioning unit, arranges at the upper surface of described air conditioner housing the inner air taking mouth inner air in framework being taken into described evaporator.
4. the display device according to Claims 2 or 3, is characterized in that,
Form the rear panel in the face of the opposition side of the order identification part of described framework and the integration of described air-conditioning unit and formed.
5. the display device according to Claims 2 or 3, is characterized in that,
Described air-conditioning unit, the extraneous air suction inlet extraneous air of framework outside being taken into described condenser is set in the side of described air conditioner housing, further, the described framework opposed with the extraneous air suction inlet of air conditioner housing is formed with extraneous air taking mouth.
6. display device according to claim 1, is characterized in that, also possesses:
Cooling air temperature meter, it detects the temperature of the cooling-air circulated between described order identification part and display panel;
Temperature control equipment, it controls based on the detected value of described cooling air temperature meter the cooling air temperature circulated between described order identification part and display panel; With
Environmental information dispensing unit, provides and delivers via the network network equipment externally in the inside of framework and the environmental information of outside that comprise the detected value of the described cooling air temperature being input to this temperature control equipment by it.
7. display device according to claim 6, is characterized in that,
Described air conditioner is accommodated in an air conditioner housing and forms air-conditioning unit, and in this air-conditioning unit, also receive the described temperature control equipment of configuration and described environmental information dispensing unit.
CN201180069927.5A 2011-04-11 2011-04-11 Display device CN103477383B (en)

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CN104200758B (en) * 2014-08-12 2017-01-11 苏州佳世达电通有限公司 Display device
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JPWO2012140714A1 (en) 2014-07-28
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