CN101281353B - Projection machine and network card cooling method thereof - Google Patents
Projection machine and network card cooling method thereof Download PDFInfo
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- CN101281353B CN101281353B CN2007101005252A CN200710100525A CN101281353B CN 101281353 B CN101281353 B CN 101281353B CN 2007101005252 A CN2007101005252 A CN 2007101005252A CN 200710100525 A CN200710100525 A CN 200710100525A CN 101281353 B CN101281353 B CN 101281353B
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Abstract
A cooling method for a projector network card comprises: providing the network card; the network card is arranged in the projector having an integrated circuit; providing a cooling wind channel for cooling the optical component of the projector; the optical component comprises a red, green and blue optical components; the cooling wind channel comprises a red optical component wind guiding pipe, a green optical component wind guiding pipe and a blue optical component wind guiding pipe which are respectively used for the red, green and blue optical components; the cooling wind channel is arranged with a branch wind guiding pipe connected to the network card integrated circuit for obtaining a potion of wind quantity to the integrated circuit. The invention also relates to a projectoe using the network card cooling method of this invention.
Description
Technical field
The present invention relates to the cooling means of projector's network interface card.The invention still further relates to the projector that adopts this network card cooling method.
Background technology
Along with the fast development of projector's technology, the projector that development generates miniaturization, high-performance, low working temperature has become the trend in market.At present, need such projector, it has little volume, high illumination, and require the fan number in the projector less, noise is low during work, and temperature is qualified.
For attaching the projector that wireless network card or wired network adapter are arranged, because the integrated circuit (IC) of network interface card thermal value when work is big, and need whole sheet-metal members that use to shield usually, heat radiation is difficulty relatively.In addition, in the prior art, generally use thermal paste on integrated circuit, this is the cost height not only, and is difficult to reach the requirement of abundant heat radiation.
Summary of the invention
In view of the above, the invention provides a kind of cooling means that is used for projector's network interface card, described method comprises: network interface card is provided, and described network interface card is arranged in the described projector, and has integrated circuit; Be provided for cooling off the cooling air channel of described projector optical parts, described optics comprises redness, green and blue optical parts, and described cooling air channel comprises red optics guide duct, green optics guide duct and the blue optical parts guide duct that is respectively applied for cooling described redness, green and blue optical parts; Wherein, in described cooling air channel, be provided with and lead to branch's guide duct of described network interface card integrated circuit, give described integrated circuit so that tell a part of air quantity.
According to an aspect of the present invention, on described red optics guide duct, be provided for cooling off branch's guide duct of described network interface card integrated circuit.
According to a further aspect in the invention, on described green optics guide duct, be provided for cooling off branch's guide duct of described network interface card integrated circuit.
According to a further aspect in the invention, described network interface card is arranged to be adjacent to the cooling air channel of described optics.
According to a further aspect in the invention, described network interface card is arranged near the sidewall of the described projector the described optics cooling air channel.
The present invention also provides such projector, and it comprises housing, power supply unit, light source cell, optical system, cooling package and network interface card, and described projector is characterised in that and has adopted according to above-described network card cooling method.
Therefore, according to the present invention, by a kind of network card cooling method of novelty is provided, appropriate design by cooling air channel, just can avoid increasing the fan that is used for the network interface card cooling, reduce the noise of projector's complete machine, and can omit the thermal paste on the integrated circuit, thereby saved material cost, made the temperature of each electric component of network interface card reach qualified requirement simultaneously.
Description of drawings
Fig. 1 is the skeleton view that the liquid crystal projector of an embodiment of projection type video display device of the present invention is looked from front skew back top.
Fig. 2 is the skeleton view that same liquid crystal projector is looked from the rear side oblique upper.
Fig. 3 is the skeleton view of taking away behind the loam cake of Fig. 1.
Fig. 4 is the skeleton view of taking away again behind the main control substrate.
Fig. 5 is the skeleton view of taking away again after the optical system.
Fig. 6 is the planimetric map of Fig. 5.
Fig. 7 is the diagrammatic sketch of the configuration example of optical system.
Fig. 8 be present embodiment light source lamp cooling want portion's enlarged drawing, be the skeleton view of looking from front skew back top.
Fig. 9 is the skeleton view of looking from the rear side oblique upper after the first half of taking guide duct away of same light source lamp cooling.
Figure 10 takes skeleton view behind the light source lamp bracket away from Fig. 9.
Figure 11 wants portion's sectional view from what rear side was looked.
Figure 12 be in the present embodiment the optics cooling body want portion's enlarged drawing, be the skeleton view of looking from front skew back top.
Figure 13 is the planimetric map of last figure.
Figure 14 is the planimetric map of taking away from the graph behind the optics.
Figure 15 is the back view of taking away from the graph after the latter half of guide duct.
Figure 16 constitutes the skeleton view of vent fan unit of the exhaust gear of present embodiment.
Figure 17 is the skeleton view of the rear side of same vent fan unit.
Figure 18 is the working state figure that is used to reduce the fan component of projection built-in temperature according to of the present invention, has shown the general layout of projector's internal fan and the direction of inspiratory airflow and exhaust airstream.
Figure 19-the 21st cools off the figure of the wind-guiding construct of IC on the network interface card with fan 41.
Figure 22-the 24th cools off the figure of the wind-guiding construct of IC on the network interface card with fan 42.
The explanation of label
1 liquid crystal projector
2 housings
4 projection camera lenses
8 vent ports
10 supply sockets
12 light source cells
13 optical systems
14 power supply unit bodies
15 noise inhibiting wave filter portions
15a linear filter (coil)
16 suction fans
161 inside escape holes
162,163 outside escape holes
164 guide ducts
17,18 vent fans
19 illuminators
191 luminotrons
192 reflection shields
193 air entries
194 exhausr ports
198 necks
20,24,39r, 39g, 39b collector lens
21, the 22 the 1st, the 2nd integration lens
23 polarising beam splitters (PBS)
25, the 26 the 1st, the 2nd dichronic mirror
27,29,31 completely reflecting mirrors
28,30 relay lenss
32 images generate optical system
33 look synthetic prisms
34r, 34g, 34b liquid crystal panel
35 prism assemblies
36r, 36g, 36b exiting side Polarizer
The preposition Polarizer of 37g, 37b
38r, 38g, 38b light incident side Polarizer
41,42,43 suction fans
50 frameworks
51 vent fan unit
52 lids
Embodiment
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is the skeleton view that the liquid crystal projector of an embodiment of projection type video display device of the present invention is looked from front skew back top, Fig. 2 is the skeleton view that same liquid crystal projector is looked from the rear side oblique upper, Fig. 3 is the skeleton view of taking away behind the loam cake of Fig. 1, Fig. 4 is the skeleton view of taking away again behind the main control substrate, Fig. 5 is the skeleton view of taking away again after the optical system, and Fig. 6 is the planimetric map of Fig. 5.
As shown in Figure 1 and Figure 2, the housing 2 that constitutes the outline of this liquid crystal projector 1 is slim rectangular shapes of the wide type of small-sized horizontal stroke, by loam cake 2a, down box 2b forms, takes the inside that presents behind loam cake 2a and the main control substrate 3 as shown in Figure 4 away.
From the front face side of loam cake 2a, the projection window 5 that throws camera lens 4 is exposed in formation in the left side.In addition, corresponding in the front portion, left side of the end face of loam cake 2a with above-mentioned projection window 5, form the operation window 6 that the adjusting knob 4a that makes the zoom of regulating projection camera lens 4 and focusing exposes.In addition, be provided with operation display part 7 at the rear portion, left side of the end face of loam cake 2a.
On the other hand, observe,, be formed with a plurality of vent ports 8 of slit-shaped at the right side wall of following box 2b from front face side.In addition, two side corner sections in the front portion, bottom surface of playing box 2b are provided with adjustable for height foot 9.And the back side sidewall at following box 2b exposes supply socket 10 that is connected with attaching plug and the input and output power terminal group 11 that is connected usefulness with various input and output power cables.
The inside of housing 2 as shown in Figure 3, Figure 4, is observed from front face side, in the depths, right side light source cell 12 is set, and is the optical system 13 of approximate L word shape ground configuration from this light source cell 12 to above-mentioned projection camera lens 4.At the place ahead of light source cell 12 configuration power supply unit body 14, wherein comprise and be provided with to the power circuit substrate of the circuit block of the each several part power supply of device and be provided with specially ballasting circuit substrate to the circuit block of illuminator power supply, at the rear of light source cell 12, the noise inhibiting wave filter portion 15 of the noise of invading via above-mentioned supply socket 10 is eliminated in configuration.
In the present embodiment, above-mentioned noise inhibiting wave filter portion 15 is separated from power supply unit body 14, and the noise inhibiting wave filter portion 15 that separates is configured in as far as possible respectively near the position that is provided with the back side of shell sidewall and the power supply unit body 14 of supply socket 10.Specifically, front sidewall configuration power supply unit body 14 along horizontal wide shell body 2, the position of sidewall and above-mentioned power supply unit body 14 subtends overleaf is provided with the noise inhibiting wave filter portion 15 of linear filter (coil) 15a etc. in the configuration of the back side, substrate upper edge sidewall.
On the other hand, in the direction of illumination rear side of above-mentioned light source cell 12, as the 1st fan that constitutes light source lamp cooling, the suction fan 16 that configuration is made of vortex flow fan, at side, as the 2nd fan that constitutes light source lamp cooling, the vent fan 17 that configuration is made of aerofoil fan.
In addition, at the side of above-mentioned power supply unit body 14,, laterally dispose the vent fan 18 that constitutes by aerofoil fan side by side with above-mentioned vent fan 17 as the 2nd vent fan that constitutes exhaust gear.In addition, as the vent fan 17 of the 2nd fan that constitutes above-mentioned light source lamp cooling, simultaneously as the 1st vent fan that constitutes above-mentioned exhaust gear.
Fig. 7 is the diagrammatic sketch of the configuration example of above-mentioned optical system 13.Have, optical system 13 is not limited to example shown in Figure 7 again, and the present invention is applicable to the mechanism that is provided with various optical systems.
Among Fig. 7, from white light process collector lens the 20, the 1st integration lens the 21, the 2nd integration lens 22, polarising beam splitter (PBS) 23 and the collector lens 24 etc. of illuminator 19, to 25 irradiations of the 1st dichronic mirror.
Above-mentioned the 1st integration lens 21 and the 2nd integration lens 22 are made of the fly lens that the rectangular arrangement of a plurality of lens units forms respectively, have the function of the Illumination Distribution homogenization that makes the white light that illuminator 19 sends.
In addition, polarising beam splitter (PBS) 23 possesses polarized light separation membrane and phasic difference plate (1/2 wave plate).Polarized light separation membrane makes from for example P polarized light in the light of the 2nd integration lens 22 and sees through, and makes the outgoing a little after changing of S polarized light light path.The P polarized light that sees through polarized light separation membrane is transformed into outgoing behind the S polarized light by the phasic difference plate that is located at its front side (light exit side).That is the nearly all consistent S polarized light that becomes of light.
Light by above-mentioned polarising beam splitter 23 arrives the 1st dichronic mirror 25 through collector lens 24.The 1st dichronic mirror 25 only has the blue component reflection of light and the function that redness and green component are passed through, and the redness of passing through and the light of green component arrive the 2nd dichronic mirror 26.The 2nd dichronic mirror 26 has the green component reflection of light and the function that red component is passed through.Thereby the white light that illuminator 19 sends is divided into blue light, green glow and ruddiness by the 1st and the 2nd dichronic mirror 25,26.
The blue light of the 1st dichronic mirror 25 reflections is reflected by completely reflecting mirror 27, the green glow of the 2nd dichronic mirror 26 reflections is kept intact, ruddiness by the 2nd dichronic mirror 26 is reflected by completely reflecting mirror 29,31 via relay lens 28,30, imports image then respectively and generates optical system 32.
Image generates in the optical system 32, in three sides of the look synthetic prisms 33 of cube shaped, respectively configuration dismantledly be provided with ruddiness with liquid crystal panel 34r, green glow with liquid crystal panel 34g and blue light prism assemblies 35 (with reference to Fig. 4) with liquid crystal panel 34b etc.The configuration outgoing lateral deviation tabula rasa 36r between the liquid crystal panel 34r at look synthetic prisms 33 and ruddiness, configuration outgoing lateral deviation tabula rasa 36g and preposition Polarizer 37g between the liquid crystal panel 34g at look synthetic prisms 33 and green glow, configuration outgoing lateral deviation tabula rasa 36b and preposition Polarizer 37b between the liquid crystal panel 34b at look synthetic prisms 33 and blue light.In addition, the light incident side at three liquid crystal panel 34r, 34g, 34b disposes light incident side Polarizer 38r, 38g, 38b and collector lens 39r, 39g, 39b respectively.
Thereby, be imported into the collector lens 39b that blue light is used by the blue light of the 1st dichronic mirror 25 and completely reflecting mirror 27 reflections, with liquid crystal panel 34b and preposition Polarizer 37b, exiting side Polarizer 36b, arrive look synthetic prisms 33 via light incident side Polarizer 38b, blue light.In addition, the green glow that is reflected by the 2nd dichronic mirror 26 is imported into the collector lens 39g that green glow is used, and with liquid crystal panel 34g and preposition Polarizer 37g, exiting side Polarizer 36g, arrives look synthetic prisms 33 via light incident side Polarizer 38g, green glow.Equally, see through the 1st dichronic mirror 25 and the 2nd dichronic mirror 26, and be imported into ruddiness collector lens 39r through the ruddiness of 2 completely reflecting mirrors 29,31 reflection, via light incident side Polarizer 38r, ruddiness with liquid crystal panel 34r and exiting side Polarizer 36r, arrival look synthetic prisms 33.
The 3 color image light that are imported into look synthetic prisms 33 are synthetic by this look synthetic prisms 33, and thus obtained coloured image light is via throwing camera lens 4 enlarging projections to the screen in the place ahead.
Fig. 8 to Figure 11 be in the present embodiment light source lamp cooling want portion's enlarged drawing, Fig. 8 is the skeleton view of looking from front skew back top, Fig. 9 is the skeleton view of looking from the rear side oblique upper, shows the situation after the first half of taking guide duct away.In addition, Figure 10 takes skeleton view behind the light source lamp bracket away from above-mentioned Fig. 9, and Figure 11 wants portion's sectional view from what rear side was looked.
The illuminator 19 of present embodiment has the luminotron 191 of formations such as high-pressure mercury-vapor lamp and metal halid lamp and forms the reflecting surface of parabolic shape and the reflection shield 192 of front openings for covering its inner face that this luminotron 191 disposes.In this reflection shield 192, as shown in figure 10, opening edge subtend ground forms air entry 193 and exhausr port 194 in front.
Traditional light source lamp cooling is only considered the cooling of illuminator and has disposed fan and escape hole thereof that even therefore illuminator can cool off, delivery temperature is also corresponding to uprise.The projection type video display device of liquid crystal projector etc. requires the high-output powerization of illuminator and the miniaturization of device simultaneously, in the above-mentioned conventional art, even the illuminator of high-output power can cool off, delivery temperature also surpasses user's permissible range and too high, therefore, be difficult to make the cooling of illuminator and these 2 of the reductions of delivery temperature to realize simultaneously.As its countermeasure, if increase the output power (rotating speed) of fan, then the noise of fan increases.
Therefore, in the present embodiment, fan as cools light source lamp 19, be provided with: the inside escape hole 161 that the air entry 193 that forms on the inside of illuminator 19 has via above-mentioned reflection shield 192 is communicated with, and suction fan (the 1st fan) 16 from escape hole 162,163 air-supplies to the outside that is communicated with reflection shield 192 outside surfaces that use; And the vent fan (the 2nd fan) 17 that the vent port 8 that the exhaust around the illuminator 19 forms via the sidewall of housing 2 is discharged to the outside.Suction fan 16 is made of vortex flow fan, and vent fan 17 is made of aerofoil fan.
The outside of above-mentioned suction fan 16 formed from the outside surface central portion of the reflection shield 192 of illuminator 19 with escape hole 162,163 leaves, and with vent fan 17 be configured to obliquely to make its suck direction towards the outside of above-mentioned suction fan 16 with escape hole 162,163 sides.
The suction fan 16 that will dispose in the direction of illumination side from illuminator 19 bends to illuminator 19 sides to the front of the guide duct 164 that extend illuminator 19 sides circular-arcly, forms above-mentioned each escape hole 161,162,163 at its front end face.Inner forms accordingly with escape hole 161 and the air entry 193 that on the reflection shield 192 of illuminator 19, forms, from the outside surface central portion of the reflection shield 192 of illuminator 19 up and down direction leave and form 2 outside escape holes 162,163 of using.
As mentioned above, the degree that the outside of suction fan 16 is left from the outside surface central portion of illuminator 19 with escape hole 162,163 and the suction direction of vent fan 17 with the oblique degree of escape hole 162,163 inclinations, can consider that the cooling of illuminator 19 and delivery temperature thereof set towards the outside of suction fan 16.
By aforesaid constituted mode, the inside of illuminator 19 that becomes luminotron 191 places of the highest temperature can adopt the inside of suction fan 16 efficiently to cool off with escape hole 161.In addition, do not reach that the outside surface (comprising the neck 198 outstanding from its rear end) of reflection shield 192 of illuminator 19 of the inner such high temperature of illuminator 19 is available to be left and the outside of the suction fan 16 that forms is carried out appropriateness with escape hole 162,163 and cooled off from the outside surface central portion.
And, the suction direction of vent fan 17 tiltedly disposes with escape hole 162,163 inclinations towards the outside of suction fan 16, therefore, from also from illuminator 19 outside surface central portions leave and the outside of the suction fan 16 that forms with the air-supply of escape hole 162,163 in cools light source lamp 19 outside surfaces, some is directly sucked vent fan 17, the exhaust that becomes high temperature with cools light source lamp 19 inside mixes the back discharges to the outside, thereby can reduce delivery temperature.
Thereby the output power that needn't cross highland increase suction fan 16 and vent fan 17 just can make the cooling of illuminator 19 and these 2 of the reductions of delivery temperature realize simultaneously, and can suppress noise.
In addition, by the outside of suction fan 16 is left and is being formed 2 up and down from the outside surface central portion of illuminator 19 with escape hole 162,163, but the outside surface of approximate equality ground cools light source lamp 19.
And, the degree that the outside of suction fan 16 is left from the outside surface central portion of illuminator 19 with escape hole 162,163 and vent fan 17 tilted so that its suction direction towards the outside of suction fan 16 with the degree of escape hole 162,163 sides, can consider that the cooling and the delivery temperature thereof of illuminator 19 set, thereby, can adapt to the high-output powerization of illuminator 19 and the requirements such as miniaturization of device, the cooling of illuminator 19 and these 2 of the reductions of delivery temperature are realized simultaneously.
In addition, be formed on from suction fan 16 on the guide duct 164 that illuminator 19 extends, can improve the degree of freedom of the allocation position of suction fan 16 by each escape hole 161,162,163 with suction fan 16.
As mentioned above,,, can not increase the output power of fan 16,17, can realize cooling and these 2 of the reductions of delivery temperature and the liquid crystal projector 1 that noise is inhibited of illuminator 19 simultaneously owing to be provided with above-mentioned light source lamp cooling according to present embodiment.
Figure 12 to Figure 15 be in the present embodiment the optics cooling body want portion's enlarged drawing, Figure 12 is the skeleton view of looking from its front face side oblique upper, Figure 13 is a planimetric map, and Figure 14 is the planimetric map of taking away behind the opticses such as liquid crystal panel, and Figure 15 is the back view of taking away after the latter half of guide duct.
As is generally known way so far all is that every kind of color is established 1, shared 3 fan cooled and ruddiness, green glow, 3 liquid crystal panels and the light incident side of each liquid crystal panel and the Polarizer of exiting side configuration that blue light is corresponding.
But, the Polarizer of the 3 piece liquid crystal panels corresponding and the light incident side of each liquid crystal panel and exiting side configuration etc. with ruddiness, green glow, blue light, because that the temperature of every kind of color rises is different with the degree of UV degradation, therefore required amount of cooling water is difference also.Especially, because the close ultraviolet region of blue light, therefore in order to prevent UV degradation, the cooling requirement is big.
All the time, require the projection type video display device of liquid crystal projector etc. realize the high-output powerization of the illuminator simultaneously high brightnessization that causes, the miniaturization and the cost degradation (miniaturizations of liquid crystal panel etc.) of device, the light quantity of having reached high brightness and unit area increases.
But above-mentioned every kind of color is with 1 fan-cooled conventional art, can't tackle the machine that the light quantity of high brightness and unit area increases.As its countermeasure, if increase the output power (rotating speed) of fan, then the noise of fan can increase.And, also to carry out the cooling of PBS.
Therefore, in the present embodiment, in above-mentioned each liquid crystal panel 34r, 34g, light incident side and the exiting side of 34b, escape hole r1, r2, g1, g2, b1, b2 that formation will be discharged via guide duct 411,421,431 from the air-supply of 3 suction fans 41,42,43, and form the escape hole p1 that will discharge via guide duct 432 from the air-supply of suction fan 43 at above-mentioned PBS23.And, constituting guide duct at light incident side escape hole b1 and the exiting side escape hole b2 place of the liquid crystal panel 34b corresponding with blue light, will discharge respectively from the air-supply of different suction fans 43,41.Have, each suction fan 41～43 is made of vortex flow fan again.
Promptly, guide duct is constituted like this: to the escape hole P1 of the light incident side escape hole b1 of the liquid crystal panel 34b corresponding and PBS23 air-supply, blow to light incident side escape hole r1, the g1 of each liquid crystal panel 34r, the 34g corresponding and exiting side escape hole r2, g2 with the exiting side escape hole b2 of the corresponding liquid crystal panel 34b of blue light with ruddiness and green glow with other 2 suction fans 41,42 with blue light with 1 suction fan 43.
More particularly, guide duct is constituted like this: in 2 suction fans 41,42 with 1 suction fan 42 via guide duct 421 to the light incident side escape hole g1 of the liquid crystal panel 34g corresponding and exiting side escape hole g2 air-supply with green glow, blow to the light incident side escape hole r1 of the liquid crystal panel 34r corresponding and exiting side escape hole r2 with the exiting side escape hole b2 of the corresponding liquid crystal panel 34b of blue light via the guide duct 411 that prolongs with other 1 suction fan 41 with ruddiness.
By aforesaid constituted mode, light incident side and exiting side and the PBS23 of available 3 suction fans, 41～43 cooling each liquid crystal panel 34r, 34g, 34b.And the light incident side of the blue light that the cooling requirement is big can fully cool off respectively with different suction fan 43,41 with exiting side.Thereby, even the light quantity of high brightness and unit area increases, also can be not with the too much lifting of the output power (rotating speed) of suction fan 41 to 43, available 3 suction fans, 41～43 cooling liquid crystal panel 34r, 34g, 34b and Polarizer 36r, 36g, 36b, 37g, 37b, 38r, 38g, 38b and PBS23 realize low noiseization.
In addition, guide duct is constituted like this: with light incident side escape hole b1 from of the escape hole p1 air-supply of 1 suction fan 43 to the liquid crystal panel 34b corresponding and PBS23 with blue light, with other 2 suction fans 41,42 to light incident side escape hole r1, the g1 of each liquid crystal panel 34r, the 34g corresponding and exiting side escape hole r2, g2 with ruddiness and green glow and with the exiting side escape hole b2 air-supply of the corresponding liquid crystal panel 34b of blue light, thereby, optical system 13 as present embodiment, at PBS23 side configuration blue light liquid crystal panel 34b, the shortest available guide duct constitutes realizes above-mentioned effect and effect.In addition, the suction fan 41 that the minimum ruddiness of usable temp rising is used is to the exiting side escape hole b2 of the liquid crystal panel 34b corresponding with blue light air-supply.Have, maximum green glows also can be blown from the suction fan 41 that ruddiness is used with 1 suction fan 42 not enough if temperature rises again.
And, as present embodiment, guide duct is constituted like this: in above-mentioned 2 suction fans 41,42, with of light incident side escape hole g1 and the exiting side escape hole g2 air-supply of 1 suction fan 42 to the liquid crystal panel 34g corresponding with green glow, with other 1 suction fan 41 to the light incident side escape hole r1 of the liquid crystal panel 34r corresponding and exiting side escape hole r2 with ruddiness and with the exiting side escape hole b2 air-supply of the corresponding liquid crystal panel 34b of blue light, thereby can not make guide duct structure complicated ground realize above-mentioned effect and effect.
As mentioned above, according to present embodiment, owing to be provided with above-mentioned optics cooling body, even the light quantity of high brightness and unit area increases, the output power of fan (rotating speed) can not rise too high yet, and can realize with 3 fan cooled liquid crystal panels and Polarizer and PBS and makes it the liquid crystal projector 1 of low noiseization.
The power supply unit of present embodiment then, is described.
As mentioned above, noise inhibiting wave filter portion generally was set in the past on the circuit substrate of power supply unit.
Projection type video display device for liquid crystal projector etc., require to reach simultaneously the high brightnessization that the high-output powerization of illuminator causes and the miniaturization and the cost degradation of device, illuminator is by high-output powerization, and therefore, the output power of power supply unit also must be big.
But, in the little machine of output power, though as above-mentioned conventional art, noise inhibiting wave filter portion can be set on the circuit substrate of power supply unit, this does not have problem, but it is big if output power becomes, the noise inhibiting wave filter portion that then has linear filter (coil) that can't miniaturization can increase, thereby makes power supply unit maximize.
Power supply unit is in case become big, the fan of this power supply unit of cooling is also maximized or increase output power (rotating speed), thereby cooling performance reduces, the noise increase.Can consider noise inhibiting wave filter portion separately is provided with separately as countermeasure, but connecting line easily imports noise, and (ElectroMagneticCompatibility: Electro Magnetic Compatibility) countermeasure is difficult to carry out, cost up because the increase of use linear filter etc. cause EMC.
Therefore, in the present embodiment, as mentioned above, noise inhibiting wave filter portion 15 is separated from power supply unit body 14, and the noise inhibiting wave filter portion 15 that separates is configured near the as close as possible position that is provided with the back side of shell sidewall and the power supply unit body 14 of supply socket 10.
Specifically, along the front sidewall configuration power supply unit body 14 of horizontal wide shell body 2, overleaf in the sidewall with the position of above-mentioned power supply unit body 14 subtends, along back side sidewall configuration noise inhibiting wave filter portion 15.
By such constituted mode, big even the output power of illuminator 19 becomes, because Miniaturizable power supply unit body 14, so the cooling performance improvement, it is possible that low noise is changed into.And, by making the shortizationest of connecting line, can make EMC reply efficient improve (reducing the use of linear filter etc.), make cost degradation become possibility.
In addition, noise inhibiting wave filter portion 15 be configured in the back side of shell sidewall that is provided with supply socket 10 near, thereby do not have power lead in the side of housing 2, therefore can not damage the above-mentioned effect of acquisition of ease of use ground and the effect of the side of housing 2.
And, front sidewall configuration power supply unit body 14 along horizontal wide shell body 2, positions sidewall overleaf and above-mentioned power supply unit body 14 subtends dispose noise inhibiting wave filter portion 15, even noise inhibiting wave filter portion 15 also can be made the shortizationest of connecting line along back side sidewall configuration, therefore, can not make each the above-mentioned effect of acquisition of configuration of components structure complicated ground and effect in the housing 2.
As mentioned above, according to present embodiment,,, also can realize improving and low noiseization and the efficient by improving the EMC countermeasure etc. and the liquid crystal projector 1 of cost degradation by cooling performance even the output power of illuminator 19 is big by possessing above-mentioned power supply unit.
Have again, in the present embodiment, housing 2 is horizontal wide type, though power supply unit body 14 and noise inhibiting wave filter portion 15 can be made connecting line the shortizationest along front sidewall and back side sidewall configured in parallel respectively, if but the lengthwise shell body of on fore-and-aft direction, growing, then in above-mentioned configuration, can't make connecting line the shortizationest, therefore in such occasion, for example if noise inhibiting wave filter portion is disposed along fore-and-aft direction, then noise inhibiting wave filter portion can be configured in back side of shell sidewall and power supply unit body near.
Then, exhaust gear in the present embodiment is described.
So far, near illuminator, be arranged side by side 2 vent fans that will discharge to the outside from the exhaust of illuminator and power supply unit etc.
As mentioned above, for the projection type video display device of liquid crystal projector etc., require the high-output powerization of illuminator and the miniaturization of device simultaneously always, and can discharge the exhaust of high temperature from the illuminator of high-output power, so the reduction of this delivery temperature and the low noise of vent fan change into and are problem.
But, in the above-mentioned conventional art, in order to make the vent fan low noiseization that is arranged side by side, must and housing sidewall between form at interval, this can hinder miniaturization.In addition, for delivery temperature is reduced, the discharge directions of each vent fan that consideration will be arranged side by side is configured to " eight " font mutually obliquely, makes from the high-temperature exhaust air of illuminator with from the exhaust of the lower temperature of power supply unit etc. to mix, this also needs corresponding space, is unfavorable for miniaturization.
Therefore, in the present embodiment, shown in above-mentioned Fig. 3, Fig. 4 etc., laterally be arranged side by side the 1st vent fan 17 and main the 2nd vent fan 18 of discharging to the outside of general of discharging to the outside from the exhaust of illuminator 19 (light source lamp unit 12) with mainly from the exhaust of power supply unit body 14, and the end of close the 2nd vent fan 18 sides in the 1st vent fan 17 is moved to the inside, make the 1st vent fan 17 be configured to the exhaust side of its discharge directions obliquely towards the 2nd vent fan 18.
In addition, above-mentioned the 1st vent fan 17 disposes obliquely with respect to a plurality of vent ports 8 of the slit-shaped that housing sidewall forms, and, be configured to make the exhaust of this vent port 8 to discharge obliquely to oblique the place ahead.
As Figure 16, shown in Figure 17, in order to form above-mentioned configuration structure, but above-mentioned the 1st vent fan 17 and the 2nd vent fan 18 predetermined fixed are in framework 50 and blocking, if this vent fan unit 51 is installed to the assigned position of the following box 2b of housing 2, then can easily realize above-mentioned configuration structure.Have, because the 1st vent fan 17 sucks the exhaust from the high temperature of illuminator 19, therefore as shown in figure 17, side covers Centromedian motor part with cover 52 overleaf again, is not subjected to influence from the high temperature air draft of illuminator 19 to protect motor part.
Constitute as described above, the 1st vent fan 17 is tilted to the inside, thereby can not hinder miniaturization, and can between housing sidewall and the 1st vent fan 1, form at interval, realize low noiseization.In addition, mix, can realize the reduction of delivery temperature from the high-temperature exhaust air of illuminator 19 with from the exhaust phase of the ratio lower temperature of power supply unit body 14.
In addition, illuminator becomes high temperature, compares with conventional art, is provided with between lamp and vent fan at interval, therefore can easily realize above-mentioned structure and effect.
In addition, the 2nd vent fan 18 is mainly used in and will discharges to the outside from the exhaust of power supply unit body 14, therefore also can carry out the exhaust of its temperature power supply unit body 14 important also not as illuminator 19 height simultaneously.
In addition, the 1st vent fan 17 that to discharge to the outside from the exhaust of illuminator 19 disposes obliquely with respect to a plurality of vent ports 8 of the slit-shaped that housing sidewall forms, thereby will discharge from a plurality of vent ports 8 inclinations of slit-shaped from the high-temperature exhaust air of illuminator 19, therefore, correspondingly discharge and become difficult, be easy to mix, can further realize the reduction of delivery temperature with exhaust from the lower temperature of the 2nd vent fan 18.
In addition, will dispose obliquely, make exhaust discharge to oblique the place ahead, thereby can prevent the horizontal discharge of the high exhaust of temperature to places such as operators from the vent port 8 that forms in housing sidewall from the 1st vent fan 17 that the exhaust of illuminator 19 is discharged to the outside.
As mentioned above, according to present embodiment,, therefore can realize the low noiseization of vent fan 17,18 and the liquid crystal projector 1 of delivery temperature reduction and miniaturization owing to be provided with above-mentioned exhaust gear.
Have again, the 1st vent fan 17 is tilted, but, then can make the 2nd vent fan 18 and above-mentioned reversal dip similarly, also can obtain certain effect if there is headroom the inboard.
The cooling means of projector's network interface card is described below.
Figure 19-the 21st cools off the figure of the wind-guiding construct of IC on the network interface card with fan 41.Figure 22-the 24th cools off the figure of the wind-guiding construct of IC on the network interface card with fan 42.
As shown in the figure, in novel projector, can dispose wireless network card or wired network adapter 800, thereby make the data transmission that comes from external network more convenient.But network interface card 800 (the especially integrated circuit in the network interface card) time also can produce heat in work, if can not efficiently radiates heat, then can reduce the performance of network interface card itself and projector, even causes the projector can't operate as normal.Therefore, must solve the heat dissipation problem of network interface card.
Cooling scheme for network interface card 800, general design is, the reasonable distribution of the air quantity by near the fan prism optical part, reach and allow in this zone all parts that require cooling all qualified purpose aspect cooling, promptly, the fan 41 or 42 that is used to cool off optics can also be divided into a part of air quantity and cool off network interface card 800 except cooling optics itself.Concrete scheme can comprise cooling scheme as described below.
A kind of preferred scheme is, cooling off the fan 42 of red optics gives the blue optical parts except distributing a part of wind, also can by in cooling air channel with the fan 42 corresponding guide ducts 421 of the red optics of cooling on be provided with to lead to branch's guide duct 422 of network interface card 800, give network interface card 800 so that tell a part of air quantity, be used to cool off network interface card 800, especially in the network interface card 800 working temperature than higher integrated circuit.
As one of alternatives, the fan 41 that cools off green optics is except itself cools off, also can be by the branch's guide duct 412 that leads to network interface card 800 is set on the corresponding guide duct 411 of cooling air channel, by appropriate design to air quantity of fan, divide a part of air quantity to give network interface card 800, be used to cool off network interface card 800, especially in the network interface card 800 working temperature than higher integrated circuit.
Like this, just do not using under the situation of thermal paste on the integrated circuit of network interface card 800, utilizing the fan cooled method of this network interface card 800, working temperature also can reach requirement.
Below further specifically describe the overall design of cooling air channel.
As shown in the figure, for having high illumination, undersized projector (projector that for example has 3000 lumen illumination, 0.63 inch liquid crystal panel), the working temperature of each optics is very high, need effectively cool off.In near the prism the optics, red optics cools off easily than green optics, the most difficult cooling of blue optical parts.Therefore, in order to satisfy the requirement of cooling, can the structure of cooling air channel reasonably be designed, to control the air quantity that three fans offer the redgreenblue optics.
Because red cooling easily, therefore, the corresponding guide duct 411 in the cooling air channel just is configured such that fan 41 except cooling off red prism optical part, can also the red polaroid of some air quantity cooling.42 green polaroids of cooling of fan.Blue optics is cooled off jointly by fan 41 and fan 43, and blue optics can divide a part of air quantity to PBS.Like this, just reach the purpose that to cool off all opticses with three fans.In order to obtain best cooling effect, found optimum air quantity to distribute and the most rational air channel shape by experiment.
Particularly, an end of guide duct 411 is communicated with fan 41, and its other end is provided with escape hole r1, and r2, escape hole r1, r2 are used to liquid crystal panel 34r air-supply.The guide duct 421 of cooling air channel is communicated with fan 42, and is provided with escape hole g1, and g2, escape hole g1, g2 are used to liquid crystal panel 34g air-supply.The guide duct 431 of cooling air channel at one end is communicated with fan 43, and is provided with escape hole b1, and escape hole b1 is used to liquid crystal panel 34b air-supply.
In addition, guide duct 411 can also be configured to give escape hole b2 with a part of air quantity from fan 41.And guide duct 431 also can be provided with branch's guide duct 432, and branch's guide duct 432 at one end also is communicated with fan 43, but is provided with the escape hole p1 that is used to cool off PBS at the other end.
The integral arrangement that is used to reduce the fan of projection built-in temperature according to of the present invention is described in further detail below.
As shown in figure 18, the direction of arrow among Figure 18 is represented the direction of air flow.Particularly, fan 41,42,43 is from the outside cold air that sucks of projector, and cold air will become the hot-air that temperature raises after the cooling of opticses such as liquid crystal panel, and hot-air accumulates near the liquid crystal panel.But because the heating of optics when work will be well below the heating of light source, therefore the temperature of this hot-air is still lower for the cooling of light source, can also further be used for cooling off light source.Therefore, as mentioned above, just fan 16 can be set, near the hot-air that fan 16 will gather opticses such as liquid crystal panel sucks, to be used for the cools light source lamp bubble, and will carry out the air that cooled temperature raises to light source bulb by vent fan 17 and discharge outside the projector, thereby play air flow in the improvement machine, reduce the effect of built-in temperature.In Figure 18, be provided with the air guiding wall 500 of wind-guiding effect at the inlet side of fan 16, it can be used for making prism optical part is cooled off the heated air in back efficiently in the suction fan 16, and carries cooling air to fluorescent tube.
In addition in the above-described embodiments, as projection type video display device, illustration optical modulation element adopt the liquid crystal projector of liquid crystal panel, but possess also applicable the present invention of projection type video display device of other image light generation systems.For example, DLP (Digital LightProcessing; Register of company of Texas Instrument (TI) trade mark) projector of form also is suitable for the present invention.
Claims (6)
1. cooling means that is used for projector's network interface card, described method comprises:
Be provided for cooling off the cooling air channel of described projector optical parts, described optics comprises redness, green and blue optical parts, and described cooling air channel comprises red optics guide duct, green optics guide duct and the blue optical parts guide duct that is respectively applied for cooling described redness, green and blue optical parts;
It is characterized in that,
Network interface card is provided, and described network interface card is arranged in the described projector, and has integrated circuit;
In described cooling air channel, be provided with and lead to branch's guide duct of described network interface card integrated circuit, give described integrated circuit so that tell a part of air quantity.
2. method according to claim 1 is characterized in that, is provided for cooling off branch's guide duct of described network interface card integrated circuit on described red optics guide duct.
3. method according to claim 1 is characterized in that, is provided for cooling off branch's guide duct of described network interface card integrated circuit on described green optics guide duct.
4. method according to claim 1 is characterized in that, described network interface card is arranged to be adjacent to the cooling air channel of described optics.
5. method according to claim 1 is characterized in that, described network interface card is arranged near the sidewall of the described projector the described optics cooling air channel.
6. a projector comprises housing, power supply unit, light source cell, optical system, fan component and network interface card, it is characterized in that, described projector has adopted according to each described network card cooling method in the above claim.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101005252A CN101281353B (en) | 2007-04-05 | 2007-04-05 | Projection machine and network card cooling method thereof |
| JP2007316812A JP5383030B2 (en) | 2007-04-05 | 2007-12-07 | projector |
| US12/062,892 US20080252858A1 (en) | 2007-04-05 | 2008-04-04 | Projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101005252A CN101281353B (en) | 2007-04-05 | 2007-04-05 | Projection machine and network card cooling method thereof |
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| CN101281353A CN101281353A (en) | 2008-10-08 |
| CN101281353B true CN101281353B (en) | 2010-06-16 |
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| CN2007101005252A Active CN101281353B (en) | 2007-04-05 | 2007-04-05 | Projection machine and network card cooling method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736379A (en) * | 2011-04-07 | 2012-10-17 | 精工爱普生株式会社 | Projector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386374A (en) * | 2000-05-31 | 2002-12-18 | 精工爱普生株式会社 | Projector |
| JP2003005293A (en) * | 2001-06-21 | 2003-01-08 | Sanyo Electric Co Ltd | Projector device |
| WO2005004405A1 (en) * | 2003-07-08 | 2005-01-13 | Philips Intellectual Property & Standards Gmbh | System and method for giving a presentation |
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2007
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386374A (en) * | 2000-05-31 | 2002-12-18 | 精工爱普生株式会社 | Projector |
| JP2003005293A (en) * | 2001-06-21 | 2003-01-08 | Sanyo Electric Co Ltd | Projector device |
| WO2005004405A1 (en) * | 2003-07-08 | 2005-01-13 | Philips Intellectual Property & Standards Gmbh | System and method for giving a presentation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736379A (en) * | 2011-04-07 | 2012-10-17 | 精工爱普生株式会社 | Projector |
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Owner name: SANYO TECHNOLOGY CENTER (SHENZHEN) CO., LTD. Free format text: FORMER NAME: SHENZHEN HUANQIANG SANYO TECHNOLOGY DESIGN CO., LTD |
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