CN1875333A - Display - Google Patents
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- CN1875333A CN1875333A CNA2004800316348A CN200480031634A CN1875333A CN 1875333 A CN1875333 A CN 1875333A CN A2004800316348 A CNA2004800316348 A CN A2004800316348A CN 200480031634 A CN200480031634 A CN 200480031634A CN 1875333 A CN1875333 A CN 1875333A
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- pressure wave
- piezo
- wave generator
- electric device
- display device
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- 238000001816 cooling Methods 0.000 claims description 40
- 210000000744 eyelid Anatomy 0.000 claims description 38
- 230000005611 electricity Effects 0.000 claims description 15
- 239000012858 resilient material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 239000003570 air Substances 0.000 description 71
- 238000007599 discharging Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/0102—Constructional details, not otherwise provided for in this subclass
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating 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
- G02F1/133385—Heating 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/36—Airflow channels, e.g. constructional arrangements facilitating the flow of air
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Hardware Design (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A display comprising a display module to form an image, the display including: a front casing provided in front of the display module; a rear casing provided at the back of the display module; an air slit formed on at least one of the front casing and the rear casing; and at least one pressure wave generator that is provided between the front casing and the rear casing to cool heat generated from the display module and to generate a pressure wave in a frequency in which an operation noise thereof can be prevented.
Description
Technical field
General inventive concept of the present invention relate to a kind of display device, relate in particular to a kind of display device with improvement structure of the heat that cooling produces from display module.
Background technology
Usually, display device refers to be used for TV, the monitor of computing machine and relevant apparatus and can comprise the display module that forms image and support the lid of display module.
Display module is by using cathode ray tube (CRT), and LCD (LCD) and plasma panel plate (PDP) form image.Display module produces heat and has developed many technology to discharge described heat when being operated.Along with display module becomes bigger, discharges heat becomes important problem.
A kind of display device is used as example, and this display device comprises the flat display module with flat display panel, drives the circuit board and the housing that supports flat display panel of flat display panel.
In traditional display device,, on housing, air cleft is set so that the inner air of circulation display device and extraneous air in order to discharge from the heat of display panel and circuit board generation.Yet along with display device becomes bigger, air cleft can not cool off display panel and circuit board fully, thereby uses cooling fan or cooling pump to force air turbulence so that produce.
Yet the cooling fan of conventional display device or cooling pump cause running noises when operation.In addition, along with display device becomes thinner so that the space of mount display is minimized, in thin display device, be difficult to install cooling fan or cooling pump.In addition, the cooling fan and the cooling pump of conventional display device are arranged near the heating region, thus their cooling heats partly only.Needing thus can be at the cooling device of cooling heat in the broad area more.
Summary of the invention
Therefore, the one side of general inventive concept of the present invention provides a kind of apparatus and method that help to cool off display module and prevent display module generation running noises.
The others of general inventive concept of the present invention and/or advantage propose part in the following description, and part will become obviously from described description, maybe can recognize by the practice of general inventive concept of the present invention.
Above-mentioned and/or the others of general inventive concept of the present invention and advantage can realize that described display device comprises the display module that forms image by a kind of display device is provided, and described display device comprises: the fore shell that is arranged on the display module front; Be arranged on the back cover at the display module back side; Be formed on the air cleft at least one in described fore shell and the back cover; With at least one pressure wave generator, described pressure wave generator is arranged between fore shell and the back cover so that the heat that cooling produces from display module and produce pressure wave with the frequency of the running noises that can prevent pressure wave generator.
According to the one side of general inventive concept of the present invention, pressure wave generator can comprise the piezo-electric device with described frequencies operations, links to each other so that electricity is supplied to the piezo-electric device eyelid retractor of piezo-electric device with the support piezo-electric device and with cable.
According to the one side of general inventive concept of the present invention, pressure wave generator is the involving vibrations device further, and described Vib. links to each other with piezo-electric device and produces pressure wave according to the operation of piezo-electric device.
According to the one side of general inventive concept of the present invention, pressure wave generator can be provided with at least in pairs, and wherein each pressure wave generator is connected to the first terminal relatively of Vib..
One side according to general inventive concept of the present invention, pressure wave generator can be at least with the tetrad setting, and wherein each pressure wave generator is connected to the first terminal relatively and be arranged on first relative terminal second end relatively in a lateral direction of Vib..
According to the one side of general inventive concept of the present invention, Vib. can be made so that expand on Vib. and direction that piezo-electric device is connected and shrink for general plate and by resilient material.
According to the one side of general inventive concept of the present invention, the cable that links to each other with piezo-electric device can link to each other so that electricity is supplied to piezo-electric device with the circuit board of display module.
One side according to general inventive concept of the present invention, pressure wave generator can comprise the signal generator that produces the signal corresponding with frequency, the amplifier of the signal that amplification receives from signal generator and produce the loudspeaker of pressure wave according to the signal that receives from signal generator and amplifier.
According to the one side of general inventive concept of the present invention, pressure wave generator may further include lid, and described lid forms the outward appearance of described pressure wave generator and has at least one hole, so that the concentrated area produces pressure wave.
According to the one side of general inventive concept of the present invention, the hole of described lid can be shaped as the inner opening funnel shaped wideer than outer opening.
According to the one side of general inventive concept of the present invention, pressure wave generator can be arranged on the back cover the inside so that spaced apart with the circuit board of display module.
According to the one side of general inventive concept of the present invention, pressure wave generator can be arranged on the bottom of inside of back cover.
According to the one side of general inventive concept of the present invention, described air cleft is arranged on the back cover and pressure wave generator can be arranged on the back cover the inside so that be positioned near the air cleft.
According to the one side of general inventive concept of the present invention, pressure wave generator can be with the frequency generation pressure wave of about 10Hz to 50Hz.
According to the one side of general inventive concept of the present invention, pressure wave generator can be with the frequency generation pressure wave of about 25Hz to 35Hz.
Above-mentioned and/or the others of general inventive concept of the present invention can realize by a kind of pressure wave generator is provided, pressure wave generator comprises: at least one piezo-electric device, with first terminal the linking to each other of piezo-electric device so that produce the Vib. of pressure wave with preset frequency by piezo-electric device; With the piezo-electric device eyelid retractor, described piezo-electric device eyelid retractor links to each other so that support piezo-electric device with second end of piezo-electric device.
According to the one side of general inventive concept of the present invention, wherein the piezo-electric device eyelid retractor can be arranged on the Vib. outside, and piezo-electric device is set to a plurality of between piezo-electric device eyelid retractor and Vib..
According to the one side of general inventive concept of the present invention, a plurality of piezo-electric devices can be uniformly-spaced to be arranged between piezo-electric device eyelid retractor and the Vib..
According to the one side of general inventive concept of the present invention, Vib. can be made for general plate and by resilient material, and described resilient material expands on Vib. and direction that piezo-electric device links to each other and shrinks.
According to the one side of general inventive concept of the present invention, the end of each in a plurality of piezo-electric devices can be with respect to the to-and-fro movement simultaneously on identical direction of piezo-electric device eyelid retractor.
According to the one side of general inventive concept of the present invention, the pressure wave frequency that Vib. produces can for about 10Hz to 50Hz.
Above-mentioned and/or the others of general inventive concept of the present invention also can realize by a kind of display device is provided, described display device comprises the display module that forms image and is arranged on the housing of display module outside that described display device comprises: be formed on the air cleft on the housing; With at least one pressure wave generator, described at least one pressure wave generator produces pressure wave and transmits pressure wave towards air cleft, and described pressure wave generator comprises at least one piezo-electric device; With first terminal the linking to each other of piezo-electric device so that produce the Vib. of pressure wave with preset frequency by piezo-electric device; With with second terminal linking to each other of piezo-electric device so that support the piezo-electric device eyelid retractor of piezo-electric device.
According to the one side of general inventive concept of the present invention, the piezo-electric device eyelid retractor can be arranged on the Vib. outside, and pressure wave generator is set to a plurality of between piezo-electric device eyelid retractor and Vib..
According to the one side of general inventive concept of the present invention, pressure wave generator can be arranged on in display module and the housing at least one so that spaced apart with air cleft.
According to the one side of general inventive concept of the present invention, described air cleft can be arranged on the top of housing, and pressure wave generator can be arranged in the display module so that transmit from the pressure wave of pressure wave generator generation towards air cleft.
Description of drawings
These of general inventive concept of the present invention and/or others and advantage will be from becoming to the description of embodiment obviously below in conjunction with accompanying drawing and being more readily understood, wherein:
Fig. 1 is the skeleton view according to the display device of general inventive concept of the present invention;
Fig. 2 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention along the line II-II among Fig. 1 intercepting;
Fig. 3 is arranged on the skeleton view of the pressure wave generator in the display device among Fig. 2;
Fig. 4 is the sectional view along the pressure wave generator among Fig. 3 of the intercepting of the line III-III among Fig. 3;
Fig. 5 is arranged on the skeleton view according to a plurality of pressure wave generators in the display device of the embodiment of general inventive concept of the present invention;
Fig. 6 is the sectional view according to the display device of another embodiment of general inventive concept of the present invention;
Fig. 7 is arranged on the skeleton view of the pressure wave generator in the display device among Fig. 6;
Fig. 8 is the sectional view along the pressure wave generator among Fig. 7 of the intercepting of the line VIII-VIII among Fig. 7;
Fig. 9 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention;
Figure 10 is arranged on the skeleton view of the pressure wave generator in the display device among Fig. 9;
Figure 11 is the curve map according to the cooling effectiveness of the display device of the embodiment of general inventive concept of the present invention;
Figure 12 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention;
Figure 13 and 14 shows the sectional view of the operation of the pressure wave generator in the display device that is arranged among Figure 12.
Embodiment
Below will be in detail with reference to the embodiment of general inventive concept of the present invention, the example of described embodiment is shown in the drawings, and wherein identical from start to finish label is represented components identical.Below by embodiment is described with reference to the drawings so that explain general inventive concept of the present invention.
Display device according to general inventive concept of the present invention refers to be used for TV (TV), the monitor of computing machine and relevant apparatus, and can comprise cathode ray tube (CRT), LCD (LCD), plasma panel plate (PDP), or any other video output device.
Use the circuit board of plasma panel plate (PDP) and driving PDP to describe an example below.Fig. 1 is the skeleton view according to the display device of general inventive concept of the present invention.Fig. 2 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention along the line II-II among Fig. 1 intercepting.
As illustrated in fig. 1 and 2, the display device 1 of the embodiment of general inventive concept can comprise the display module 10 that forms image according to the present invention, be arranged on the fore shell 20 of display module 10 fronts, be arranged on the back cover 30 at display module 10 back sides, with at least one pressure wave generator 40, this at least one pressure wave generator 40 is arranged between fore shell 20 and the back cover 30 so that cooling comes from the heat of display module 10 and produces pressure wave with the frequency that prevents running noises.
PDP 13 can comprise header board 14 and spaced apart so that form the back plate 16 of discharge plasma space 15 with header board 14.PDP 13 and circuit board 18 produce heat of high temperature when operation.On circuit board 18, the power supply unit (not shown) that electricity is supplied to PDP 13 typically produces sizable heat of high temperature.
Back cover 30 can have a plurality of air clefts 31, so that the heat that discharging produces from display module 10, described air cleft 31 can be formed on the upper and lower of back cover 30.Pressure wave generator 40 can be arranged on the inside surface of back cover 30.Air cleft 31 also can be formed on the fore shell 20.
Fig. 3 is arranged on the skeleton view of the pressure wave generator in the display device among Fig. 2.Fig. 4 is the sectional view along the pressure wave generator among Fig. 3 of the intercepting of the line III-III among Fig. 3.
As shown in Figure 3 and Figure 4, pressure wave generator 40 can produce pressure wave and produce turbulent airflow around display module 10 with preset frequency, so that the heat that cooling produces from display module 10.Display module 10 ambient air temperature are owing to the heat that produces from display module 10 raises, be discharged into the outside thereby the air that is in the rising temperature moves up by air cleft 31, and aliunde air flows in the display module 10 by the air cleft 31 that is arranged on back cover 30 bottoms.Thus, produce the natural convection air-flow.Yet the natural convection deficiency of air is with the heat of effective cooling from display module 10, thereby along with display module 10 becomes increasing, the cooling device that needs to add is so that the described heat of promotion cooling.In addition, expectation prevents the running noises of cooling device.Thus, display device can comprise pressure wave generator, described pressure wave generator comprises piezo-electric device eyelid retractor 43 and piezo-electric device 41, wherein Yu Ding voltage is applied on the piezo-electric device eyelid retractor 43, and piezo-electric device 41 can link to each other with piezo-electric device eyelid retractor 43 and produce pressure wave with the preset frequency that prevents running noises.
In the embodiment of general inventive concept of the present invention, pressure wave generator 40 transmits pressure wave towards display module 10.Yet pressure wave generator 40 can be arranged in the back cover 30 so that upload the pressurization pressure ripple in the direction of aliunde air flow.Pressure wave generator 40 can pass through screw, cementing agent, or adhesive tape or other coupling arrangement are connected to back cover 30.In addition, pressure wave generator 40 can utilize claw to be connected to back cover 30, so that pressure wave generator 40 can be dismantled easily.Can use single pressure wave generator 40, also can use a plurality of pressure wave generators 40.For example, as shown in Figure 5, have three pressure wave generators 40.
Piezo-electric device 41 can be used to produce the piezoelectric pressure ripple.In piezo-electric device 41, if produce electric polarity, then typically produce distortion by input voltage, described distortion periodically produces so that cause producing pressure wave.The frequency of piezo-electric device 41 can be determined by the size of regulating piezo-electric device 41.Input voltage determines by electricity or the power supplied with in advance, thereby to be confirmed as making the frequency of piezo-electric device 41 be the frequency that prevents running noises to the size of piezo-electric device 41.Prevent that the required frequency of running noises from can be to be lower than audio frequency (being roughly 20Hz to 20KHz) substantially.In fact, prevent that the frequency of running noises can be lower than 50Hz substantially, wherein be felt hardly at the 50Hz running noises.In addition, if the frequency of piezo-electric device 41 is lower than 10Hz, cooling effectiveness is too little, thereby the heat of the cooling display module 10 of pressure wave generator 40 is that about 10Hz is to 50Hz so that prevent the frequency of running noises.The frequency of pressure wave generator 40 can for about 25Hz to 35Hz.
Piezo-electric device eyelid retractor 43 can support piezo-electric device 41 and can link to each other so that electricity is supplied to piezo-electric device 41 with cable 42.Piezo-electric device eyelid retractor 43 can link to each other so that electricity is supplied to piezo-electric device 41 with first end of piezo-electric device 41.Piezo-electric device eyelid retractor 43 can link to each other with the circuit board 18 of display module 10, thereby electricity is supplied to piezo-electric device eyelid retractor 43, but the present invention is not limited to this.Piezo-electric device eyelid retractor 43 can link to each other with external power source, thereby electricity is supplied to piezo-electric device eyelid retractor 43.Piezo-electric device eyelid retractor 43 can link to each other with back cover 30 by securing member or other fastener such as screw.
Vib. 45 can link to each other so that with the frequencies operations identical with the frequency of piezo-electric device 41 with second end of piezo-electric device 41.Vib. 45 have thin sheet form and according to the distortion of piezo-electric device 41 with the preset distance to-and-fro movement so that the pressure boost wave intensity, but the present invention is not limited to this.Yet piezo-electric device 41 can produce pressure wave under the situation that does not have Vib. 45.Vib. 45 can be made so that produce pressure wave effectively by resilient material.
According to above-mentioned structure, provide the detailed description of operation of the pressure wave generator 40 of display device 1 below.
Electricity supplies to display module 10 so that form image.Then, heat produces and the air cleft 31 of the upper and lower of air by being formed on back cover 30 flows into and flows out back cover 30 from display module 10, so that cooling heat.Pressure wave is sent to display module 10 ambient airs by pressure wave generator 40, promotes heat transferred thus.Here, pressure wave generator 40 can be operated simultaneously when electricity supplies to display device 1, but the invention is not restricted to this.Display device 1 was operated after the schedule time when electricity supplies to display device 1.Should be appreciated that temperature when display module 10 equals and when being higher than predetermined temperature pressure wave generator 40 can operate.
Identical therewith, display device 1 can comprise pressure wave generator 40, cools off the heat that produces from display module 10 thus and prevents running noises.In addition, pressure wave generator 40 can be typically than cooling fan or wideer ground of cooling pump cooling heat, and only partly heat of cooling generation is regional for described cooling fan or cooling pump.Because piezo-electric device 41 is as pressure wave generator 40, so installing space reduces and setting pressure wave producer 40 is more much easier than cooling fans or cooling pump are installed, cooling fan or cooling pump must be installed in the zone that produces heat near.In display device 1, also Vib. 45 can be installed, so that pressure boost wave intensity and cooling effectiveness.Pressure wave generator 40 can comprise and cover 47, thus pressure boost wave intensity and cooling effectiveness.
Fig. 5 is the skeleton view of a plurality of pressure wave generators.Fig. 6 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention.Fig. 7 is arranged on the skeleton view of the pressure wave generator in the display device among Fig. 6.Fig. 8 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention.
To shown in Figure 8, can comprise a plurality of piezo-electric devices 141 so that support Vib. 145 as Fig. 6 according to the pressure wave generator 140 of the display device 1 of another embodiment of general inventive concept of the present invention.
Piezo-electric device 141 can be provided with at least in pairs, and described paired piezo-electric device 141 can be connected to the terminal relatively of Vib. 145.That is, shown in Fig. 7 a, piezo-electric device 141 can be provided with in pairs, and the piezo-electric device 141 that is provided with can be connected to the first terminal relatively 145a of Vib. 145 in pairs, but the present invention is not limited to this.Shown in Fig. 7 b, piezo-electric device 141 can be set to tetrad, described four piezo-electric devices 141 not only can be connected to the first terminal relatively 145a, and can be connected to the second terminal relatively 145b, and the second terminal relatively 145b is arranged on the first terminal relatively 145a in a lateral direction.Piezo-electric device 141 can be connected to each in the center section of end of Vib. 145.
Vib. 145 can be shaped as tabular and is made by resilient material, and described resilient material is connected at Vib. and expands on the direction of piezo-electric device 141 and shrink.Vib. 145 can be thin rubber slab or the thin plate of being made by the rubber-like particular plastic.Vib. 145 can be shaped as circle or ellipse, or other Any shape.
Piezo-electric device eyelid retractor 143 can be arranged on Vib. 145 outsides, thereby it can link to each other with whole piezo-electric devices 141.More than one piezo-electric device eyelid retractor 143 can be set, so that support in the piezo-electric device 141 each.Piezo-electric device eyelid retractor 143 can be connected to back cover 30 by securing member or other retention mechanism such as screw.
According to above-mentioned structure, in pressure wave generator 140, a plurality of piezo-electric devices 141 can make Vib. 145 vibrations to the frequency of 50Hz with about 10Hz, produce pressure wave thus.Alternatively, a plurality of piezo-electric devices 141 make Vib. 145 vibrations with about 25Hz to the frequency of 35Hz.
Thus, display device 1 can be cooled off the heat that produces from display module 10 and prevent running noises.
Fig. 9 is the sectional view according to the display device of the embodiment of general inventive concept of the present invention.Figure 10 be along the pressure wave generator among Fig. 7 of the line VIII-VIII among Fig. 7 intercepting skeleton view.
As Fig. 9 and shown in Figure 10, the display device 1 of another embodiment of general inventive concept is used the loudspeaker different with previously described embodiment according to the present invention.
Signal generator can produce the signal that the heat that produces from display module 10 can be cooled and the running noises of loudspeaker 241 can be prevented from.The frequency of using can for about 10Hz to 50Hz.The frequency that produces from signal generator can for about 25Hz to 35Hz.The frequency that produces from loudspeaker 241 can for about 25Hz to 35Hz.
Amplifier can amplify the signal that produces from signal generator so that pass the signal to loudspeaker 241.Amplifier and signal generator can be installed on the circuit board 18, but also can be installed in other place.Amplifier and signal generator also can be installed on the back cover 30 and other element of display device 1 on, as long as they can pass the signal to loudspeaker 241.
According to above-mentioned structure, display device 1 can be cooled off from the heat of display module 10 generations and can typically prevent or restrain running noises.
Figure 11 is the curve map according to the cooling effectiveness of the pressure wave generator of general inventive concept of the present invention.Y-axis is represented the dimensionless temperature of the air that the air cleft 31 from the top that is arranged on back cover 30 is discharged, and X-axis express time (is unit with the second).Here, dimensionless temperature is to be installed under the situation on the display device 1 value that the temperature of the air of the discharge that temperature by measuring the air of discharging measures under divided by situation about not being installed at pressure wave generator 40 and 140 on the display device 1 obtains at pressure wave generator 40 and 140.In this test, pressure wave generator 40 and 140 frequency setting are that about 25Hz is to 35Hz, pressure wave generator 40 and 140 be installed on the bottom of back cover 30 and the temperature of discharging air at the middle part of the air cleft of back cover 30 A, left part B and the measurement of right part C place.In Figure 11, A is illustrated in the dimensionless quantity of the middle part measurement temperature of the air cleft 31 in the top that is arranged on back cover 30, B is illustrated in the dimensionless quantity of the left part measurement temperature of the air cleft 31 in the top that is arranged on back cover 30, and C is illustrated in the dimensionless quantity of the right part measurement temperature of the air cleft 31 in the top that is arranged on back cover 30.
As shown in figure 11, be about 40% at the cooling effectiveness of middle part A, be about 10% at the cooling effectiveness of left part B and right part C.
Shown in Figure 12 to 14, the display device 1 of another embodiment of general inventive concept can comprise the display module 10 that forms image according to the present invention, be arranged on the housing 330 of display module 10 outsides, at least one pressure wave generator 140 that penetrates the air cleft 337 of housing 330 and produce pressure wave and pressure wave is transmitted towards air cleft 337.
Housing 330 can comprise fore shell 331 that is arranged on display module 10 fronts and the back cover 335 that is arranged on display module 10 back sides.Housing 330 may further include the middle case (not shown) that is arranged between fore shell 331 and the back cover 335.
Back cover 335 can have a plurality of air clefts 337 so that the heat that discharging produces from display module 10.
Air cleft 337 can be formed on the top of housing 330.For example, air cleft 337 can form a plurality of on the top of back cover 335, but also can be formed on other position.Air cleft 337 also can be formed on the fore shell 331.As an aspect of general inventive concept of the present invention, air cleft 337 is formed on the upper and lower of back cover 330 so that discharge heat better.
In addition, pressure wave generator 140 can be arranged on air cleft 337 outsides, and this can make inner air pass through air cleft 337 and exchange from air outside.Pressure wave generator 140 can be installed in the position of not considering air cleft 337 on the display device 1.Pressure wave generator 40 can promote natural convection so that cause natural convection by air is exerted one's influence, and described air flows through the air cleft 337 on the bottom that is arranged on housing 330.Pressure wave generator 40 can be connected to display module 10 with cable or other coupling arrangement, thereby pressure wave generator 40 is operated simultaneously when electricity supplies to display module 10, but the present invention is not limited to this.Independent controller can be arranged in the pressure wave generator 140 so that according to the internal temperature controlled pressure wave producer 140 of housing 330 and other parts.Pressure wave generator 140 can be connected to piezo-electric device eyelid retractor 143 by the securing member such as screw etc.The piezo-electric device eyelid retractor 143 of pressure wave generator 140 can be connected to the circuit board 18 of display module 10 by the securing member such as screw etc.
With reference to Figure 13 and 14, describe the operation of the pressure wave generator of display device below in detail.
Electricity supplies to display module 10 so that form image.Then, heat gives off and the inner air of housing 330 is heated from display module 10, thereby the inner air of heating upwards flows and accumulates in the top of the inside of housing 330.At this moment, pressure wave generator 140 be operated in case by air cleft 337 with the inner air of housing 330 with exchange from air outside.As shown in figure 13, the Vib. 145 of pressure wave generator 140 moves towards air cleft 337, thereby pressure wave produces towards the outside and inner air can move towards the outside.As shown in figure 14, the Vib. 145 of pressure wave generator 140 moves on the relative direction of air cleft 337, thereby pressure wave moves towards inside from the outside, and moves towards inside from air outside.At this moment, inner air exchanges with pass through pressure wave generator 140 from air outside, thereby the inside of housing 330 is cooled.The top of the inner air heated shell 330 that is shown module 10 heating and moves up, this prevents by pressure wave generator 40.
As mentioned above, according to general inventive concept of the present invention, the heat that produces from display module can be cooled and can prevent running noises.
In addition, described lid is arranged on the pressure wave generator, thus pressure boost wave intensity and cooling effectiveness.
Moreover, can easily be prevented from the heating on the top of housing.
Although illustrated and described several embodiment of general inventive concept of the present invention, those having ordinary skill in the art will appreciate that under the situation of principle that does not break away from general inventive concept of the present invention and spirit and can change that the scope of general inventive concept of the present invention is limited by claims and equivalent thereof to these embodiment.
Claims (35)
1, a kind of display device comprises the display module that forms image, and described display device comprises:
Be arranged on the fore shell of display module front;
Be arranged on the back cover at the display module back side;
Be arranged on the air cleft at least one in described fore shell and the back cover; With
At least one pressure wave generator, described pressure wave generator is arranged between fore shell and the back cover, so that the heat that cooling produces from display module and produce pressure wave with the frequency of the running noises that prevents described pressure wave generator.
2, display device according to claim 1, wherein said pressure wave generator comprises piezo-electric device and piezo-electric device eyelid retractor, and described piezo-electric device supports piezo-electric device with described frequencies operations and described piezo-electric device eyelid retractor and links to each other so that electricity is supplied with piezo-electric device with cable.
3, display device according to claim 2, the further involving vibrations device of wherein said pressure wave generator, described Vib. link to each other with piezo-electric device and produce pressure wave according to the operation of piezo-electric device.
4, display device according to claim 3, wherein said pressure wave generator are provided with at least in pairs, and wherein each pressure wave generator is connected to the first terminal relatively of Vib..
5, display device according to claim 4, wherein said pressure wave generator is at least with the tetrad setting, and wherein each pressure wave generator is connected to the first terminal relatively and be arranged on first relative terminal second end relatively in a lateral direction of Vib..
6, display device according to claim 4, wherein said Vib. have general plate and are made so that expand on Vib. and direction that piezo-electric device links to each other and shrink by resilient material.
7, display device according to claim 3, the described cable that wherein links to each other with piezo-electric device links to each other so that electricity is supplied with piezo-electric device with the circuit board of display module.
8, display device according to claim 1, wherein pressure wave generator comprises the signal generator of generation corresponding to the signal of described frequency, amplification is from the amplifier of the signal of signal generator reception, and loudspeaker, described loudspeaker produces pressure wave according to the signal from signal generator and amplifier reception.
9, display device according to claim 1, wherein pressure wave generator comprises lid, described lid forms the outward appearance of pressure wave generator and has at least one hole, so that the concentrated area produces pressure wave.
10, display device according to claim 9, the hole of wherein said lid is configured as funnel-form, and this funnel has the inner opening wideer than outer opening.
11, display device according to claim 10, wherein pressure wave generator is arranged on the inside of back cover so that spaced apart with the circuit board of display module.
12, display device according to claim 11, wherein pressure wave generator is arranged on the bottom of inside of back cover.
13, display device according to claim 1, wherein said air cleft is arranged on the back cover and pressure wave generator is arranged on back cover the inside in case be positioned at air cleft near.
14, display device according to claim 1, wherein said pressure wave generator is with the frequency generation pressure wave of about 10Hz to 50Hz.
15, display device according to claim 14, wherein said pressure wave generator is with the frequency generation pressure wave of about 25Hz to 35Hz.
16, a kind of pressure wave generator comprises:
At least one piezo-electric device;
Vib., described Vib. links to each other so that produce pressure wave by piezo-electric device with preset frequency with first end of piezo-electric device; With
The piezo-electric device eyelid retractor, described piezo-electric device eyelid retractor links to each other so that support piezo-electric device with second end of piezo-electric device.
17, pressure wave generator according to claim 16, wherein said piezo-electric device eyelid retractor are arranged on the Vib. outside, and
Described piezo-electric device is set to a plurality of between piezo-electric device eyelid retractor and Vib..
18, pressure wave generator according to claim 17, wherein said a plurality of piezo-electric devices are uniformly-spaced to be arranged between piezo-electric device eyelid retractor and the Vib..
19, pressure wave generator according to claim 16, wherein said Vib. be general plate and made by resilient material, and described resilient material expands on Vib. and direction that piezo-electric device links to each other and shrinks.
20, pressure wave generator according to claim 17, the end of each in wherein said a plurality of piezo-electric devices is with respect to the to-and-fro movement simultaneously on identical direction of piezo-electric device eyelid retractor.
21, pressure wave generator according to claim 16, wherein the pressure wave frequency that is produced by Vib. is that about 10Hz is to 50Hz.
22, a kind of display device comprises display module that forms image and the housing that is arranged on the display module outside, and described display device comprises:
Be formed on the air cleft on the housing; With
At least one pressure wave generator, described at least one pressure wave generator produce pressure wave and transmit pressure wave towards air cleft, and described pressure wave generator comprises:
At least one piezo-electric device;
Vib., described Vib. links to each other with first end of piezo-electric device, so that produce pressure wave by piezo-electric device with preset frequency; With
The piezo-electric device eyelid retractor, described piezo-electric device eyelid retractor links to each other so that support piezo-electric device with second end of piezo-electric device.
23, display device according to claim 22, wherein said piezo-electric device eyelid retractor are arranged on the Vib. outside, and
Described pressure wave generator is set to a plurality of between piezo-electric device eyelid retractor and Vib..
24, display device according to claim 22, wherein said Vib. have the general plate shape and are made so that expand on Vib. and direction that piezo-electric device links to each other and shrink by resilient material.
25, display device according to claim 23, the end of each in wherein said a plurality of piezo-electric devices is with respect to the to-and-fro movement simultaneously on identical direction of piezo-electric device eyelid retractor.
26, display device according to claim 22, wherein said pressure wave generator are arranged on in display module and the housing at least one so that spaced apart with air cleft.
27, display device according to claim 26, wherein said air cleft is arranged on the top of housing, and
Described pressure wave generator is arranged in the display module so that transmit from the pressure wave of pressure wave generator generation towards air cleft.
28, a kind of display device comprises:
Display unit;
The lip-deep air hole of display unit; With
Pressure wave generator, described pressure wave generator is at the inner pressure wave that produces of display unit, and described pressure wave comes out from display unit by described air hole.
29, display device according to claim 28, wherein said pressure wave generator comprises:
The piezo-electric device of display unit inside; With
The Vib. that links to each other with piezo-electric device.
30, display device according to claim 29, wherein said Vib. are tabular.
31, a kind of display device comprises:
Display screen;
The casing device that holds display screen;
At the inner wave generating device that produces pressure wave of casing device; With
Be arranged on the casing device so that the air-breather that the authorized pressure ripple comes out from casing device.
32, a kind of method that reduces the heat in the display device, described method comprises step:
Produce pressure wave in enclosure interior around display device; With
By pressure wave heat transferred is arrived the housing outside.
33, method according to claim 32, wherein pressure wave produces with the frequency of the running noises that prevents display device.
34, method according to claim 32, the step of wherein said generation pressure wave is carried out by the piezo-electric device that links to each other with Vib..
35, method according to claim 32, wherein said pressure wave produces with the frequency that prevents noise.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030075464 | 2003-10-28 | ||
| KR20030075464 | 2003-10-28 | ||
| KR1020040004284A KR100654829B1 (en) | 2003-10-28 | 2004-01-20 | Display |
| KR1020040004284 | 2004-01-20 | ||
| KR1020040016983A KR20050091507A (en) | 2004-03-12 | 2004-03-12 | Vibrating wave generator and display with the same |
| KR1020040016983 | 2004-03-12 | ||
| PCT/KR2004/002747 WO2005041006A1 (en) | 2003-10-28 | 2004-10-28 | Display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1875333A true CN1875333A (en) | 2006-12-06 |
Family
ID=36569756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800316348A Pending CN1875333A (en) | 2003-10-28 | 2004-10-28 | Display |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1678592A1 (en) |
| CN (1) | CN1875333A (en) |
| WO (1) | WO2005041006A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11145659A (en) * | 1997-11-10 | 1999-05-28 | Sony Corp | Air cooling apparatus |
| JP2000244166A (en) * | 1999-02-24 | 2000-09-08 | Sony Corp | Cooling device and electronic apparatus |
| JP2002130199A (en) * | 2000-10-19 | 2002-05-09 | Sony Corp | Piezoelectric fan |
-
2004
- 2004-10-28 CN CNA2004800316348A patent/CN1875333A/en active Pending
- 2004-10-28 WO PCT/KR2004/002747 patent/WO2005041006A1/en active Application Filing
- 2004-10-28 EP EP04793604A patent/EP1678592A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005041006A1 (en) | 2005-05-06 |
| EP1678592A1 (en) | 2006-07-12 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |