CN103917074B - The display of special purpose - Google Patents

The display of special purpose Download PDF

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Publication number
CN103917074B
CN103917074B CN201410114031.XA CN201410114031A CN103917074B CN 103917074 B CN103917074 B CN 103917074B CN 201410114031 A CN201410114031 A CN 201410114031A CN 103917074 B CN103917074 B CN 103917074B
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Prior art keywords
heat
conducting
display
closed box
shell
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CN201410114031.XA
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CN103917074A (en
Inventor
李春圃
尚军辉
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Hisense Visual Technology Co Ltd
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Qingdao Hisense Electronics Co Ltd
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Priority to CN201410114031.XA priority Critical patent/CN103917074B/en
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Abstract

The invention discloses a kind of display of special purpose, it is related to display technology field, solves the problems, such as to be radiated when being radiated with closed structure relatively costly.Including closed box, the display device on front side of the closed box, the heat exchanger on rear side of the closed box and the thermal source and heat-conducting part that are arranged on inside the closed box, the thermal source includes integrated power device on a printed circuit, the heat-conducting part is connected with the rear shell of the closed box, the rear shell is fitted and connected with the base plate of the heat exchanger, the base plate of the heat exchanger is provided with the air flow channel of multiple parallel arrangeds, and the air flow channel is tubular construction.The present invention is suitable for the display with closed box structure.

Description

The display of special purpose
Technical field
The present invention relates to display technology field, more particularly to a kind of display of special purpose.
Background technology
The video display apparatus used under some special climate environment are generally required with corresponding special construction.Example Such as, in the wild, the area such as southern or coastal, in order to prevent the factors such as moist, salt fog and mould to harmful shadow of electronic component Ring, it is necessary to video display apparatus are designed into closed structure.But, video display apparatus are designed to after closed structure, show The heat produced when showing that equipment works will be unable to timely distribute, and display device temperature is raised can influence electronics unit device The performance and used life of part.
It is in the prior art to be arrived heat derives by heat pipe to solve the heat dissipation problem of the display device of closed structure Radiated on semiconductor chilling plate.For example, the heat transfer that thermal source is produced to be close to heat source surface first it is heat sink on, then lead to Cross with the heat pipe of the first heat sink connection be delivered to second it is heat sink on, finally by fit in second it is heat sink on semiconductor chilling plate pair Second it is heat sink implement cooling, second it is heat sink be a part for containment housing outer wall, semiconductor chilling plate is located at outside casing.
During stating radiating in realization, inventor has found that at least there are the following problems in the prior art:Heat pipe is one The fabulous component of complex structure, conductivity of heat is planted, its is relatively costly, be not easy to dismounting, and semiconductor chilling plate belongs to active device Part, it is relatively costly.
The content of the invention
Embodiments of the invention provide a kind of display of special purpose, solve when being radiated with closed structure The relatively costly problem of radiating, production cost is reduced while radiating efficiency is ensured.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that:
A kind of display of special purpose, including closed box, the display device on front side of the closed box, peace Heat exchanger on rear side of the closed box and thermal source and heat-conducting part inside the closed box, the heat Source includes integrated power device on a printed circuit, and the heat-conducting part is connected with the rear shell of the closed box, it is described after Shell is fitted and connected with the base plate of the heat exchanger, and the base plate of the heat exchanger is provided with the air flow channel of multiple parallel arrangeds, institute Air flow channel is stated for tubular construction.
Preferably, at least one via is opened up on the printed circuit board (PCB), between the power device and the heat-conducting part It is connected by the via.
Preferably, the heat-conducting part includes the first heat-conducting part, the second heat-conducting part and the first heat-conduction insulation spacer, the power Device is connected with being located at the printed circuit board (PCB) homonymy and cover first heat-conducting part of the via by Heat Conduction Material, institute The first heat-conducting part is stated by the Heat Conduction Material in the via and is located at the printed circuit board (PCB) opposite side and is covered the via Second heat-conducting part connection, second heat-conducting part is by after first heat-conduction insulation spacer and the closed box Shell is connected.
Preferably, a diameter of 0.3~1 millimeter of the via.
Preferably, the thermal source also includes integrated chip on a printed circuit, and the heat-conducting part is also led including second Heat insulation pad, the chip is connected by the second heat-conduction insulation spacer with the rear shell of the closed box.
Preferably, the heat-conducting part also includes the 3rd heat-conduction insulation spacer, and the display device passes through the 3rd heat conductive insulating Pad is connected with the rear shell of the closed box.
Preferably, bar hole is offered on the side wall housing or rear shell of the closed box, is provided with the bar hole The elastic sheet of expansion joint is discharged as pressure.
Preferably, the elastic sheet is plastic tab or rubber sheet.
Preferably, the heat exchanger also includes shell, and the cage connection is on the base plate and covers the air The main part of runner, exposes the two ends port of the air flow channel, and heat loss through radiation material is scribbled on the shell.
The display of special purpose provided in an embodiment of the present invention, including closed box, before the closed box The display device of side, the heat exchanger on rear side of the closed box and the thermal source being arranged on inside the closed box And heat-conducting part, the thermal source include integrated power device on a printed circuit, the heat-conducting part and the closed box Shell connection afterwards, the rear shell is fitted and connected with the base plate of the heat exchanger, and the base plate of the heat exchanger is provided with multiple parallel rows The air flow channel of row, the air flow channel is tubular construction.The display of the special purpose that the present invention is provided will by heat-conducting part In air in the air flow channel of the heat exchanger outside heat derives to closed box that the power device on printed circuit board (PCB) is produced, When the temperature in the air flow channel of heat exchanger is higher than ambient temperature, the warm-up movement of air causes atmospheric density in air flow channel Diminish, hot-air rises naturally along air flow channel, the upper port through air flow channel spreads out so that gas in air flow channel Pressure drop is low, and the air pressure outside air flow channel is higher, therefore outside air is penetrated into by the lower port of air flow channel and adds to sky In flow channel, air flow channel is set to become fixed air circulation duct.Conventional is the equal of for a sheet of to air radiating Air in space is heated, and air is averagely heated less, and its warm-up movement is strong not as the air warm-up movement in air flow channel, Therefore, atmospheric density is bigger relative to air in air flow channel, it is not easy to forms ascending air, therefore also is difficult to form air pressure Difference.Compared with conventional air radiates, air flow channel is the space of relatively closing, and the draught head inside and outside it dissipates than conventional to air The draught head of thermosetting is much bigger, therefore cross-ventilation speed is faster, accelerates radiating rate;Additionally, because air flow channel sheet Body structure is guided to air, make air be more readily formed it is regular circulate, further improve radiating rate. Therefore the display of special purpose provided in an embodiment of the present invention can realize efficient radiating with simple structure, while drop Low manufacturing cost.
Brief description of the drawings
The overlooking structure figure of the non-porousization casing heat abstractor that Fig. 1 is provided for the present invention;
The overlooking structure figure of the non-porousization casing heat abstractor that Fig. 2 is provided for the present invention;
The three-dimensional structure diagram of the non-porousization casing heat abstractor that Fig. 3 is provided for the present invention;
The structural representation of the heat exchanger that Fig. 4 is provided for the present invention.
Reference:
1- closed boxes, 11- fore shells, shell after 12-, 13- pressure release expansion joint, 2- thermals source, 21- power devices, 22- cores Piece, 3- heat-conducting parts, the heat-conducting parts of 31- first, the heat-conducting parts of 32- second, the heat-conduction insulation spacers of 33- first, 34- the second heat conductive insulating pads Piece, the heat-conduction insulation spacers of 35- the 3rd, 4- printed circuit board (PCB)s, 41- vias, 5- heat exchangers, 51- base plates, 52- air flow channels, 53- Shell, 6- display devices.
Specific embodiment
Heat exchanging device and non-porousization casing heat abstractor are described in detail below in conjunction with the accompanying drawings.
The invention provides a kind of display of special purpose, shown in reference picture 1, including closed box 1, installed in described The display device 6 of the front side of closed box 1, the heat exchanger 5 installed in the rear side of the closed box 1 and it is arranged on the closing Thermal source 2 and heat-conducting part 3 inside casing 1, the thermal source 2 include the power device 21 being integrated on printed circuit board (PCB) 4, described Heat-conducting part 3 is connected with the rear shell 12 of the closed box 1, and the rear shell 12 is fitted and connected with the base plate 51 of the heat exchanger 5, institute The base plate 51 for stating heat exchanger 5 is provided with the air flow channel 52 of multiple parallel arrangeds, and the air flow channel 52 is tubular construction.Make Used time, power device 21 produces heat, heat to be delivered to rear shell 12 by heat-conducting part 3, so be delivered to heat exchanger 5 to base plate 51 so that the air themperature in air flow channel 52 is raised, when the temperature in the air flow channel 52 of heat exchanger 5 is higher than ambient temperature When, the warm-up movement of air causes that atmospheric density diminishes in air flow channel 52, and hot-air rises naturally along air flow channel 52, passes through The upper port of air flow channel 52 spreads out so that air pressure reduction in air flow channel 52, and the air pressure outside air flow channel 52 It is higher, thus outside air by air flow channel 52 lower port penetrate into add in air flow channel 52, turn into air flow channel 52 Fixed air circulation duct.Conventional is the equal of the sky for the air in a sheet of space is heated to air radiating Gas is averagely heated less, and its warm-up movement is strong not as the air warm-up movement in air flow channel 52, therefore, atmospheric density is relative to sky Air in flow channel 52 is bigger, it is not easy to forms ascending air, therefore also is difficult to form draught head.Radiated with conventional air Compare, air flow channel 52 is the space of relatively closing, the draught head inside and outside it is bigger than the conventional draught head to be formed that radiated to air Much, thus cross-ventilation speed faster, accelerate radiating rate;Additionally, because 52 body structures of air flow channel enter to air Row guiding, make air be more readily formed it is regular circulate, further improve radiating rate;Additionally, whole display The simple structure of device, low production cost.
Preferably, shown in reference picture 2, at least one via 41, the power device 21 are opened up on the printed circuit board (PCB) 4 It is connected by the via 41 between the heat-conducting part 3.Via is opened up on printed circuit board (PCB) 4 to be able to more just It is delivered on rear shell 12 from via 41 in by the heat that the power device on printed circuit board (PCB) 4 away from the side of rear shell 12 is produced, should During only need to be arranged on printed circuit board (PCB) 4, do not interfere with the cloth of other components closed box 1 Nei Office.
Preferably, shown in reference picture 2, the heat-conducting part 3 includes the first heat-conducting part 31, the second heat-conducting part 32 and the first heat conduction Insulation spacer 33, the power device 21 is by Heat Conduction Material and is located at the homonymy of the printed circuit board (PCB) 4 and covers the via 41 first heat-conducting part 31 is connected, and first heat-conducting part 31 is by the Heat Conduction Material in the via 41 and is located at described The opposite side of printed circuit board (PCB) 4 simultaneously covers second heat-conducting part 32 of the via 41 and connects, and second heat-conducting part 32 passes through First heat-conduction insulation spacer 33 is connected with the rear shell 12 of the closed box 1.By the first heat-conducting part 31, the and of via 41 The cooperation of the second heat-conducting part 32, the heat transfer that easily can be produced power device 4 out, and is only needed in printing It is arranged on circuit board 4, does not interfere with the layout of other components closed box 1 Nei;Additionally, heat-conduction insulation spacer 33 problems that can not be fitted completely when can solve the problem that the second heat-conducting part 32 with rear 12 directly contact of shell, increase the second heat-conducting part 32 with The contact area of shell 12, improves heat transfer efficiency afterwards.Wherein, the first heat-conducting part 31 and the second heat-conducting part 32 can be to be capable of heat conduction Metal, preferably Copper Foil.
It should be noted that a via 41 can be opened up on printed circuit board (PCB) 4, it is also possible to open up multiple vias 41, often Individual via 41 is all combined with the first heat-conducting part 31 and the second heat-conducting part 32 carries out heat conduction, and the quantity of via 41 can be according to radiating need Ask and set.The size of via 41 needs to consider the effect of layout and radiating of the component on printed circuit board (PCB) 4 Factor of both rate, if via 41 is oversized, may cause to components' placement integrated on printed circuit board (PCB) 4 Influence, if via 41 is undersized, may be unable to reach expected radiating effect, before these two aspects requirement is met Put, the diameter of via 41 is preferably 0.3~1 millimeter, herein under the premise of, the quantity of via 41 is more, and heat dispersion is better.
Preferably, it is shown in Figure 2, offer bar hole, example on the two side housing or rear shell 12 of the closed box 1 Size such as bar hole can be 10mm*100mm, and pressure release expansion joint 13 is provided with bar hole, and wherein pressure release is swollen Swollen section 13 is elastic sheet, when causing internal pressure to increase for increasing when the heat in closed box 1, outwards heaves generation Elastic deformation discharges internal pressure, nature is also returned to therewith when internal pressure recovers normal, so as to protect closing Printed circuit board (PCB) 4 in casing 1, the matching relationship between component and structural member will not be influenceed and be shortened by internal pressure Service life.Preferably, the elastic sheet that pressure release expansion joint 13 is used is plastic tab or rubber sheet.
It should be noted that above-mentioned radiation processes give wherein one heat transfer approach, passed using above-mentioned heat Pass on the basis of approach, the radiation processes in closed box 1 can also include two other heat transfer approach.Referring to Fig. 3 institutes Show, on the one hand, chip 22 is also integrated with printed circuit board (PCB) 4, chip 22 is fitted and connected with the second heat-conduction insulation spacer 34, and the Two heat-conduction insulation spacers 34 are fitted and connected on rear shell 12 again, therefore the heat transfer that can be produced chip 22 is to heat exchanger 5, In the diabatic process, the second heat-conduction insulation spacer 34 can smooth chip 22 and rear 12 directly contact of shell when can not be complete The problem of laminating, increase chip 22 and rear shell 12 contact area, improve heat transfer efficiency;On the other hand, before closed box 1 The inner side of shell 11 is provided with display device 6, and display device 6 is fitted and connected with the 3rd heat-conduction insulation spacer 35, and the 3rd heat conductive insulating Pad 35 is fitted and connected on rear shell 12 again, therefore the heat transfer that can be produced display device 6 is to heat exchanger 10, in the biography In thermal process, the 3rd heat-conduction insulation spacer 35 can flow display device 6 with rear 12 directly contact of shell when can not fit completely Problem, increase display device 6 and rear shell 12 contact area, improve heat transfer efficiency.
Preferably, shown in reference picture 4, heat exchanger 5 also includes shell 53, and the shell 53 is connected on the base plate 51 simultaneously The main part of the air flow channel 52 is covered, exposes the two ends port of the air flow channel 52, scribbled on the shell 53 Heat loss through radiation material.The structure of air flow channel 52 is applicable very much for the closed box 1 in vertical direction with certain altitude, profit Cross-ventilation can be strengthened with air flow channel 52, after the flowing of air speeds, by the heat energy passed out inside closed box 1 It is enough to be dispersed into air faster, improve the radiating efficiency of heat exchanger 5;Additionally, heat loss through radiation material is scribbled on shell 53, should In the form of an electromagnetic wave can be dispersed into air the heat that closed box 1 is passed over by heat loss through radiation material, further be carried The radiating efficiency of heat exchanger high 5.
It should be noted that constituting a heat exchange series for natural heat dissipation between above-mentioned closed box 1 and heat exchanger 5 System, heat exchanger 5 can be efficiently conducted heat to by three sinking paths, and natural heat dissipation is carried out by heat exchanger 5.So as to It is to be capable of achieving to carry out efficient radiating to closed box 1 with relatively low cost under without the support of active radiator part.
It should be noted that the front side of the printed circuit board (PCB) 4 described in the present embodiment is referred to towards before closed box 1 The side of shell 13, rear side refers to the side of the fore shell 13 of dorsad closed box 1.
It should be noted that printed circuit board (PCB) 4 and power device 21 integrated thereon are considered as being assembling printing electricity Road plate(Assembly of PCB, english abbreviation is PCBA), it is believed that PCBA is formed after power device is assembled on PCB 's.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention should described be with scope of the claims It is accurate.

Claims (7)

1. a kind of display of special purpose, including closed box, the display device on front side of the closed box, installation Heat exchanger on rear side of the closed box and the thermal source and heat-conducting part that are arranged on inside the closed box, its feature exist In,
The thermal source includes integrated power device on a printed circuit, and the heat-conducting part connects with the rear shell of the closed box Connect, the rear shell is fitted and connected with the base plate of the heat exchanger, the base plate of the heat exchanger is provided with the sky of multiple parallel arrangeds Flow channel, the air flow channel is the tubular construction of insertion;
At least one via is opened up on the printed circuit board (PCB), the via is passed through between the power device and the heat-conducting part It is connected;
The heat-conducting part includes the first heat-conducting part, the second heat-conducting part and the first heat-conduction insulation spacer, and the power device is by leading Hot material with positioned at the printed circuit board (PCB) homonymy and cover first heat-conducting part of the via and be connected, first heat conduction Portion by the Heat Conduction Material in the via be located at the printed circuit board (PCB) opposite side and cover described the second of the via Heat-conducting part is connected, and second heat-conducting part is connected by first heat-conduction insulation spacer with the rear shell of the closed box.
2. the display of special purpose according to claim 1, it is characterised in that a diameter of 0.3~1 milli of the via Rice.
3. the display of special purpose according to claim 1, it is characterised in that the thermal source also includes being integrated in printing Chip on circuit board, the heat-conducting part also includes the second heat-conduction insulation spacer, and the chip passes through the second heat-conduction insulation spacer It is connected with the rear shell of the closed box.
4. the display of special purpose according to claim 1, it is characterised in that the heat-conducting part also includes the 3rd heat conduction Insulation spacer, the display device is connected by the 3rd heat-conduction insulation spacer with the rear shell of the closed box.
5. the display of special purpose according to claim 1, it is characterised in that the side wall housing of the closed box or Bar hole is offered on shell afterwards, the elastic sheet that expansion joint is discharged as pressure is installed in the bar hole.
6. the display of special purpose according to claim 5, it is characterised in that the elastic sheet be plastic tab or Rubber sheet.
7. the display of the special purpose according to claim any one of 1-6, it is characterised in that the heat exchanger also includes Shell, the cage connection is on the base plate and covers the main part of the air flow channel, exposes the air flow channel Two ends port, heat loss through radiation material is scribbled on the shell.
CN201410114031.XA 2014-03-25 2014-03-25 The display of special purpose Active CN103917074B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101486369B1 (en) * 2014-10-24 2015-01-27 지에스알(주) Radiant heat pad and method for manufacturing the same
CN109379882A (en) * 2018-12-03 2019-02-22 惠州市华星光电技术有限公司 Display module radiator structure and display module

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CN1946277A (en) * 2006-10-30 2007-04-11 陈鸿文 High efficiency heat radiator without fan
CN201293295Y (en) * 2008-11-14 2009-08-19 青岛海信电器股份有限公司 Radiating structure
CN201622789U (en) * 2010-02-09 2010-11-03 深圳市洲明科技股份有限公司 Double-layer protective LED display screen box

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JP2005134591A (en) * 2003-10-30 2005-05-26 Sharp Corp Thin display device
KR100589325B1 (en) * 2004-05-18 2006-06-14 삼성에스디아이 주식회사 Plasma display device
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Publication number Priority date Publication date Assignee Title
CN1946277A (en) * 2006-10-30 2007-04-11 陈鸿文 High efficiency heat radiator without fan
CN201293295Y (en) * 2008-11-14 2009-08-19 青岛海信电器股份有限公司 Radiating structure
CN201622789U (en) * 2010-02-09 2010-11-03 深圳市洲明科技股份有限公司 Double-layer protective LED display screen box

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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No.

Patentee after: Hisense Video Technology Co.,Ltd.

Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No.

Patentee before: HISENSE ELECTRIC Co.,Ltd.