CN1828405A - Projector - Google Patents

Abstract

A projector which projects an image, includes: an optical configuration section which includes: a light source which emits light; an optical conversion section which includes a conversion section which converts the light emitted from the light source into an image based on image data; and a projection lens which enlarges and projects the image converted by the optical conversion section; a circuit configuration section which operates the optical configuration section; a housing which is included in the exterior of the projector and includes, in its outer surface portion, a heat releasing section; and a heat transfer member which transfers, to the housing, heat emitted by heat emitting components of the circuit configuration section and the optical configuration section.

Description

Projector

Technical field

The present invention relates to the projector of projected image.More specifically, the cooling structure that relates to projector.

Background technology

In the past, the cooling structure that the heat that projector produced is cooled off, described as patent documentation 1, known have such structure, promptly, part to the bottom surface of the resin system optics chassis that is arranged on enclosure interior is carried out opening, by fixing auxiliary heat dissipation plate in this peristome, and make the heat sink of power supply board contact or be fixed thereon with this auxiliary heat dissipation plate, the heat of heat sink is passed to the auxiliary heat dissipation plate, and fan is set and dispels the heat by flow air by being respectively air intake opening in the resin system optics chassis and exhausr port.

Patent documentation 1: the spy opens flat 11-237690 communique

But, for patent documentation 1 described structure, by adopting resin system optics chassis, or resin system optics chassis is arranged on enclosure interior, or open and the auxiliary heat dissipation plate is had with the fixed shape etc. with the corresponding size of this peristome in the part of the bottom surface of resin system optics chassis, so exist the heat that is passed to the auxiliary heat dissipation plate to be difficult to dispel the heat and problem that cooling effectiveness reduces by the air that fan is blown.

Summary of the invention

The present invention proposes in view of the above problems, and purpose is to provide a kind of projector of improving cooling effectiveness.

To achieve these goals, projector of the present invention is characterised in that, have: optics formation portion, this optics formation portion have the light source that penetrates light, have based on view data and will be transformed into the optical transform portion, enlarging projection of the transformation component of the image projecting lens by the image of optical transform portion conversion from the light of light source; Drive the circuit formation portion of optics formation portion; The externally mounted part of constituting projector divides side outside to have the housing of radiating part; And the heat of the element that will generate heat in optics formation portion and/or circuit formation portion passes to the heat transfer component of housing.

According to such projector, the heat of the element that will generate heat in optics formation portion or circuit formation portion by heat transfer component passes to housing.Thereby the externally mounted part of constituting projector divide housing that side outside has radiating part with the heat transmitted from radiating part to the extraneous air bulk storage.Thus, can improve radiating efficiency.Thereby can improve the cooling effectiveness of heater element.

In above-mentioned projector, preferably have: be arranged near the cooling fan that air is sent to radiating part of radiating part that housing has; And cover, this cover covers radiating part and is fixed on the housing, makes the air flow of being sent by cooling fan.

According to such projector, cover radiating part by cover, the air flow of sending from cooling fan.Thus, can further improve radiating efficiency in the radiating part.Thereby can further improve the cooling effectiveness of heater element.

In above-mentioned projector, preferably, radiating part is formed by fin.

According to such projector, radiating part is formed by fin, so can amplify area of dissipation, can further improve radiating efficiency.Thereby can further improve the cooling effectiveness of heater element.

In above-mentioned projector, preferably, the cooling space zone that forms by housing and cover and place optics and constitute separated the opening of body interior area of space of body interior that portion and circuit constitute the projector inside of portion.

According to such projector, by the heat of heater element being dispelled the heat to cool off in the cooling space zone, not only can improve cooling effectiveness as mentioned above, open because cooling space is regional and the body interior area of space is separated, the dust that sucks from extraneous air by the air of sending from cooling fan is in the cooling space zone flows, and do not flow at the body interior area of space, be attached in the optics formation portion and circuit formation portion that is received upon the body interior area of space so can prevent dust, the shadow of dust can be projected on the image.Thereby, can improve the cooling effectiveness of heater element, can improve the quality of projected image simultaneously.

In above-mentioned projector, preferably, fin is formed on the top or side of projector at least.

According to such projector,, can further improve radiating efficiency because fin is formed at the position of the influence that is easy to be subjected to outside air convection.Thereby can further improve the cooling effectiveness of heater element.

In above-mentioned projector, preferably, cooling fan and the configuration of fin plane earth.

According to such projector and since cooling fan can with fin plane earth configuration, and compare under cooling fan and the occasion that fin is provided with overlappingly, can reduce the thickness of projector.

In above-mentioned projector, preferably, fin has with respect to cooling fan and forms radial zone.

According to such projector, radial by fin is formed with respect to cooling fan, the air that spreads for sending radially from cooling fan can be so that the air efficient between fin and fin that is produced by cooling fan flows well.So, fin can receive the air that produced by fan effectively to dispel the heat, and by further raising radiating efficiency, can further improve the cooling effectiveness of the element of heating.

In above-mentioned projector, preferably, cover is made of the parts of heat conductivity.

According to such projector, heat is from being fixed with the housing transmission of cover, and the heat that passes to cover has improved radiating efficiency thus further from the exterior side of cover and dispelling the heat towards extraneous air of formation cooling space zone.Therefore, can further improve the cooling effectiveness of heater element

Description of drawings

Fig. 1 is the general perspective of projector according to an embodiment of the invention, and Fig. 1 (a) is the skeleton view under the cover stationary state, and Fig. 1 (b) is the skeleton view that takes off under the cover state.

Fig. 2 is the planimetric map that takes off under the cover state.

Fig. 3 is an A-A sectional view shown in Figure 2.

Fig. 4 is the block diagram that the circuit formation of projector is shown.

Symbol description

110111215161718203031323334LCD3536373839LED404142505152LED53545556575859606162MPU 7071100110200201202203、204205210210a220230300400410、420500510520530

Embodiment

Below, the 1st embodiment of the present invention is described with reference to the accompanying drawings.

(embodiment)

Fig. 1 is the general perspective of projector according to an embodiment of the invention, and Fig. 1 (a) is the skeleton view under the cover stationary state, and Fig. 1 (b) is the skeleton view that takes off under the cover state.Use the outward appearance of Fig. 1 general description projector 1 to constitute.

In order to describe, illustrate as last facial 1a, front face 1b, the facial 1c in left side, the facial 1d in right side, the 1e of back side portion, bottom surface sections 1f for formation as all 6 faces of the appearance of projector 1.

Shown in Fig. 1 (a), projector 1 constitutes to have: the cover 100 in the roughly whole zone of the last facial 1a of the housing 10 of the roughly rectangular shape that the externally mounted part of constituting projector 1 divides and covering projector 1.

Housing 10 is made of upper shell 11 and lower house 12 (shown in Figure 3).Upper shell 11 forms by having the high aluminium alloy of heat conductivity and pyroconductivity, and lower house 12 similarly forms the externally mounted part branch of constituting projector 1 bottom surface sections 1f with upper shell 11 by having the high aluminium alloy of heat conductivity and pyroconductivity.And upper shell 11 and lower house 12 are fixed by screw element.

Shown in Fig. 1 (b), on facial 1a on the housing 10, the cover mounting surface 201 of mounting cover 100 is formed on the upper shell 11 with the amount of thickness depression of cover 100.And on the 1a of portion, the plate-like cooling space zone formation face 202 that forms downward recessed one-level is formed on the upper shell 11 in the above.On cooling space zone formation face 202, be formed with a plurality of fins 210 highlightedly as radiating part.In addition, in cooling space zone formation face 202, on the front face 1b of housing 10 direction, be provided with and be fixed with and suck extraneous air and send to the cooling fan 70 of cooling space zone 200 (shown in Figure 3).And the projecting height of fin 210 is set for identical with the height of cover mounting surface 201.

In the above on the 1a of portion, be formed with the newspaper sound hole 15 of the sound of loudspeaker 37 outputs that had from projector 1 inside being reported sound at the cross side of cooling space zone formation face 202.

The 1b of portion in front is equipped with projecting lens 59 with stretching out and keeps the leading section of the projecting lens holding member 80 of projecting lens 59 from housing 10.In addition, in order to control the work of projector 1, be provided with the remote control light accepting part 16 of reception from the signal of telepilot 530.

The upper side of facial 1c and the facial 1d in right side in the left side, be formed with the cover stationary plane 203,204 of the recessed one-level that is used for fixing cover 100, on cover stationary plane 203,204, on per two positions on each face, form screw element fixed bearing portion 206 with recess and circular hole.

The 1e of portion overleaf is formed with by the cooling space zone that is formed in upper shell 11 and constitutes facial 205 exhausr ports that surrounded 220 on face 202, fin 210 and the exhausr port.And, also be provided with the connector (omitting diagram) that constitutes the described power connector 42 in back (shown in Fig. 4) and can be connected with plug 520 (shown in Fig. 4), wherein plug 520 is plugs that the power supply adaptor (omit and illustrate) that can be independent of projector 1 is had.

At the bottom surface sections 1f of housing 10, be provided with the leg 17 (shown in Fig. 3) of supporting projector 1.

Cover 100 forms cross section U word shape by having the high aluminium alloy of heat conductivity and pyroconductivity.And, on cover 100, on the position relative, form the hole of a plurality of slit-shaped and constitute air intake opening 110 with cooling fan 70.In addition, on the side surface part of cover 100, be formed with screw element fixed bearing portion 206 corresponding threaded holes 120 respectively and make it have recess and circular hole.

In order to cover the fin 210 on the last facial 1a that is formed at housing 10, with the cover that constitutes 100 mountings like this on cover mounting surface 201, tighten the screw element fixed bearing portion 206 that is installed on by threaded hole 120 by screw element 121, thereby be fixed on the upper shell 11.

By cover 100 is fixed on the upper shell 11, it is outstanding but become roughly same plane to set not cover 100 outside of facial 1c in last facial 1a, left side from upper shell 11 and the facial 1d in right side for, makes it have the appearance of one sense as projector 1.

Fig. 2 is the planimetric map that takes off under the cover state.Use Fig. 2 that the formation and the work of fin 210 are described.

As shown in Figure 2, be formed at each fin 210 on the cooling space zone formation face 202, have the radial fin 210a of portion that forms radial zone with respect to cooling fan 70 (particularly, with respect to cooling fan 70 send mouthfuls 71) respectively.In addition, cover stationary plane 203,204 also works as fin 210.Thereby cooling fan 70 is provided with fin 210 plane earths (not overlappingly), and the feasible air of sending from cooling fan 70 diffuses into radial, by the radial fin 210a of portion the air that is spread is flowed effectively respectively between fin 210 in opposite directions.

Fig. 3 is the A-A sectional view of Fig. 2.Formation and the work of the I of projector are described with Fig. 3.Use constituting of projector 1 volume inside zone that Fig. 3 explanation realized by housing 10 and cover 100.

As shown in Figure 3, projector 1 is made of body interior area of space 300 and cooling space zone 200, wherein, body interior area of space 300 becomes by the area of space (area of space of projector 1) of upper shell 11 and lower house 12 encirclements, and cooling space zone 200 becomes the area of space of regional formation face 202 of the cooling space that is formed in upper shell 11 and cover 100 encirclements.Thereby body interior area of space 300 becomes the structure that separates substantially fully with cooling space zone 200.So, can prevent that flow air flows into body interior area of space 300 in cooling space zone 200.

Body interior area of space 300 is optics formation portions 50 of placing the optical system that constitutes the described projector 1 in back, as the zone of the circuit unit 60 of the circuit formation portion of forming circuit system etc.And cooling space zone 200 is to form fin 210 on above-mentioned cooling space zone formation face 202, the zone of cooling fan 70 so that the heat of the transmission of optics formation portion 50 from body interior area of space 300 in and circuit unit 60 is dispelled the heat is set.

And, in order to drive the cooling fan 70 that is arranged at cooling space zone formation face 202, on cooling space zone formation face 202, offer hole (omitting diagram) with connect want be captured in body interior area of space 300 in circuit unit 60 cable (omission illustrates) that be connected etc.But this hole is also prevented that by package parts (omitting diagram) flow air flows into body interior area of space 300 in cooling space zone 200.

Be delivered to upper shell 11 and the lower house 12 that constitutes body interior area of space 300 from the formed heat of radiation heat of optics formation portion 50 and circuit unit 60, to outside transfer of air heat, make the heat cooling of being transmitted from outside that upper shell 11 and lower house 12 contact with extraneous air.

Use Fig. 3 that the formation of optics formation portion 50 at first is described.

Optics formation portion 50 is parts of the optical system of constituting projector 1, constitute have light source 51, optical transform portion 54 and projecting lens 59.Light source 51 constitutes LED (light emitting diode) light source 52 and the collector lens 53 that has as light emitting source.Optical transform portion 54 constitute have collimation lens 57, expansion lens 58 and as the liquid crystal light valve 56 of transformation component 55.

Optics formation portion 50 is arranged on the plan view central authorities and the cross section middle position of housing 10.The 1e of portion side is provided with light source 51 overleaf, sets gradually optical transform portion 54 and projecting lens 59 forwardly, and a part that is maintained fixed the projecting lens holding member 80 of projecting lens 59 is stretched out from front face 1b.In optical transform portion 54, set gradually the collimation lens 57, expansion lens 58 in the place ahead that is positioned at light source 51 and as the liquid crystal light valve 56 of transformation component 55.Optics formation portion 50 is provided with point-blank with the above-mentioned order that is provided with.

Light source 51 has light source cable 51a and is connected with the described circuit unit 60 in back, and liquid crystal light valve 56 has liquid crystal light valve cable 56a and is connected with the described circuit unit 60 in back.

The following describes the work of each optics formation portion.

The led light source 52 that constitutes light source 51 sends white light (light that comprises all looks) based on the drive signal from LED control part 39 (being illustrated in Fig. 4) that is transmitted by light source cable 51a.

Collector lens 53 will forwards be penetrated effectively by the light that led light source 52 is sent.Collimation lens 57 will penetrate after will being transformed into directional light from the light that light source 51 penetrates.Expansion lens 58 will merge the incident light zone (diagram is omitted) that expansion injects to the regulation of liquid crystal light valve 56 from the directional light that collimation lens 57 penetrates.

In the present embodiment, liquid crystal light valve 56 uses the transmission type colour liquid crystal panel, based on the drive from LCD drive division 34 (being illustrated in Fig. 4) that transmits by light valve cable 56a, is transformed into image to modulating from the light of expansion lens 58 ejaculations.And liquid crystal light valve 56 is not limited to transmissive type liquid crystal panel, also can use reflective liquid crystal panel or digital micro-mirror device etc.

Projecting lens 59 is made of various lens, amplifies the image that is generated by liquid crystal light valve 56 modulation, penetrates to the outside of projector 1.

By the formation and the work of above-mentioned optics formation portion 50, projector 1 with the image enlarging projection to the projecting plane of screen 510 (being illustrated in Fig. 4) that is arranged on projector 1 outside etc.

And, on the inner face side of the upper shell 11 that constitutes cooling space zone formation face 202, be formed with fixed part 20, keep the position of regulation to place and be fixed with concerning the projecting lens holding member 80 that light source 51, optical transform portion 54 and the projecting lens 59 that constitutes optics formation portion 50 is maintained fixed.

The following describes the formation of circuit unit 60.

Circuit unit 60 is circuit formation portions of the Circuits System of constituting projector 1, is that the element of each circuit part that will constitute the circuit block of the described projector 1 in back is installed in formed unit on the circuit substrate 61.On the inner face side of the upper shell 11 that constitutes cooling space zone formation face 202, form circuit unit fixed projection 18, circuit unit 60 is fixed on the upper shell 11 by screw element 19.

Circuit unit 60 is a matrix with circuit substrate 61, as the element that constitutes each circuit part, MPU (microprocessor) 62 is installed, constitute power connector 42 (being illustrated in Fig. 4) connector (diagram is omitted), loudspeaker 37 (being illustrated in Fig. 4), connect liquid crystal light valve cable 56a liquid crystal light valve cable connector 63, connect the light source cable connector 64 of the light source cable 51a that is used for driving light source 51 etc.Other element omits diagram.

The heat that 200 places, body interior area of space 300 and cooling space zone are described with that describes.

Driving under the occasion of projector 1, as heat conductivity plate 410 mountings of heat transfer component 400 in become the maximum Flame Image Process of in circuit unit 60 heating with the MPU62 of element to cover above it.Thereby heat conductivity plate 410 is held on the upper shell 11 between MPU62 and the upper shell 11 by circuit unit 60 is fixed on.By this structure, heat conductivity plate 410 is connected on the inner face of upper shell 11 of the opposition face that becomes cooling space zone formation face 202.Thereby heat conductivity plate 410 passes to the heat that takes place among the MPU62 upper shell 11 that constitutes cooling space zone formation face 202.

And, under the occasion that drives projector 1, in maximum light source 51 that in optics formation portion 50, generates heat, on light source cable 51a, with the relative shape of light source cable 51a that is had with light source 51, being pasted with flexible aluminium is the heat conductivity plate 420 as heat transfer component 400 of principal ingredient.Thereby light source cable 51a is connected with light source cable connector 64, and heat conductivity plate 420 sticks on the inner face side of the upper shell 11 that constitutes cooling space zone formation face 202.By this structure, heat conductivity plate 420 is connected the inner face of the upper shell 11 that becomes the face opposite with cooling space zone formation face 202.Thereby heat conductivity plate 420 will be passed to by the heat that light source 51 is taken place and constitute the upper shell 11 that the cooling space zone constitutes face 202.

Constitute the inner face that the cooling space zone constitutes the upper shell 11 of face 202 by utilizing above-mentioned heat conductivity plate 410,420 to pass to, also can transmit heat to the cooling space zone formation face 202 that constitutes cooling space zone 200 by the heat that takes place in MPU62 and the light source 51.

Describe the formation in relevant cooling space zone 200 in detail at this.

Cooling space zone 200 is the area of space that constitute face 202 and cover 100 encirclements by the cooling space zone that is made of above-mentioned upper shell 11.In addition, on cooling space zone formation face 202, be formed with fin 210, be provided with cooling fan 70.Thereby in cooling space zone 200, by be made of the encirclement of face 202, fin 210 and cover 100 the cooling space zone, each wing 210 separates cooling space zone 200, constitutes stream 230 respectively.In addition, on the 1e of back side portion, exhausr port 220 by the cooling space zone constitute on face 202, fin 210 and the exhausr port facial 205 be formed in respectively on the upper shell 11 with surrounding.

Then, just the work and the heat of the cooling fan in the cooling space zone 200 70 is elaborated.

By the work of cooling fan 70, cooling fan 70 will suck extraneous airs from the air intake opening 110 that is formed on the cover 100, from sending mouthfuls 71 air be passed out in the cooling space zone 200 radially.

The air of sending radially from cooling fan 70 flows in respectively between in opposite directions the fin 210 (flowing each stream 230) by the radial fin 210a of portion that each fin 210 has.At this moment, by flow air in each stream 230, make the heat of transmitting to the upper shell 11 that constitutes cooling space zone formation face 202 from cooling space zone formation face 202 and fin 210 heat radiations, and with flow air from exhausr port 220 to projector's 1 outside exhaust.Air flows along the direction shown in the arrow among Fig. 3.

By carrying out the circulation of above-mentioned air flow repeatedly, the heat that passes to upper shell 11 constitutes face 202 and fin 210 heat radiations by the cooling space zone.So, MPU62 is cooled by the heat conductivity plate 410,420 that the inner face side with the upper shell 11 that constitutes cooling space zone formation face 202 is connected with light source 51.

And, as mentioned above, because body interior area of space 300 is substantially shaped as the structure that separates fully with cooling space zone 200, so flow air can not leak in the body interior area of space 300 in cooling space zone 200.

Fig. 4 is the block diagram that the circuit formation of projector is shown.Use Fig. 4 to illustrate that the circuit of projector 1 constitutes and work.

Projector 1 carries out wireless connections with computing machine 500.Projector 1 has antenna 30, Department of Communication Force 31, signal transformation portion 32, image processing part 33, LCD (LCD) drive division 34, optics formation portion 50, LED control part 39, acoustic processing portion 35, enlarging section 36, loudspeaker 37, cooling fan control part 40, cooling fan 70, receives the remote signal acceptance division 41 of the signal of telepilot 530, and the control part 38 etc. of controlling the work of power connector 42 and projector 1 generally.

The work of each circuit part of the projector 1 of explanation now.

Projector 1 receives from the image encoded data (Still image data and motion video data) of computing machine 500 and voice data etc. by receiving antenna 30 and Department of Communication Force 31.View data that is received and voice data are by signal transformation portion 32 compoundization, and view data outputs to image processing part 33, and voice data outputs to acoustic processing portion 35.

33 pairs of view data from 32 inputs of signal transformation portion of image processing part are carried out converting frame rate and the processing etc. that converts.In addition, 33 pairs of view data of image processing part are carried out various image correction such as brightness adjustment, contrast adjustment, gray scale correcting process in the lump.So the view data of being processed is exported to LCD drive division 34 with picture signal as projection.LCD drive division 34 drives liquid crystal light valve 56 based on the projection from image processing part 33 outputs with picture signal.

Acoustic processing portion 35 will be transformed to simulating signal from the voice data of the digital signal of signal transformation portion 32 input, be amplified by enlarging section 36, utilize loudspeaker 37 to report sound as sound by newspaper sound hole 15.

LED control part 39 carries out the briliancy light modulation of led light source 52 based on the signal of control part 38.Particularly, corresponding to the scene of image, the driving frequency of driving LED light source 52 and dutycycle are changed.So, under bright scene,, make led light source 52 luminous more brightly by improving driving frequency or prolonging " ON " time of dutycycle.And, under dark scene,, suppress the luminous control of led light source 52 by reducing " ON " time of driving frequency or shortening dutycycle.And led light source 52 sends white light (light that comprises all looks).

Cooling fan control part 40 is based on the signal controlling cooling fan 70 of control part 38 and drive.

Remote signal acceptance division 41 is accepted from the signal of telepilot 530 transmissions by remote control light accepting part 16 (being illustrated in Fig. 1), to control part 38 outputs.And telepilot 530 uses infrared ray to communicate.

Control part 38 comprises optics formation portion 50 and as the circuit unit 60 of circuit formation portion, controls the work of projector 1 generally.

The electric power that is used to drive projector 1 is supplied with by the power supply adaptor (not shown) that is provided with dividually with projector 1.So, have power connector 42 and be connected with plug 520 that power supply adaptor has.

Can obtain following effect according to the foregoing description.

(1) according to this embodiment, the upper shell 11 that constitutes housing 10 has heat conductivity and the high aluminium alloy formation of pyroconductivity, is formed with fin 210 on cooling space zone formation face 202.And, the MPU62 that will in circuit unit 60, generate heat by heat conductivity plate 410,420 and in optics formation portion 50 heat of the light source 51 of heating pass to the inner face of the upper shell 11 that constitutes cooling space zone formation face 202.By this formation, owing to the heat of being transmitted is dispelled the heat to outside atmosphere to the outside of upper shell 11 and from fin 210 effectively, so can improve radiating efficiency.Thereby, can improve the cooling effectiveness of the element of the MPU62 of heating and light source 51 etc.

(2) according to this embodiment, by being formed in formation fin 210 on the cooling space zone formation face 202 of upper shell 11, cooling fan 70 is set in its vicinity, and be provided with one and cover fin 210 and be fixed in the cover 100 that upper shell 11 makes the air flow of sending from cooling fan 70, can improve the radiating efficiency at fin 210 places further, further the cooling effectiveness of the element of the MPU62 of raising heating and light source 51 etc.

(3) according to this embodiment, projector 1 is made of body interior area of space 300 and cooling space zone 200, wherein, body interior area of space 300 becomes by the area of space (projector 1 volume inside zone) of upper shell 11 and lower house 12 encirclements, and cooling space zone 200 becomes the area of space of regional formation face 202 of the cooling space that is formed in upper shell 11 and cover 100 encirclements.Thereby body interior area of space 300 becomes the structure that separates substantially fully with cooling space zone 200.So, cool off by the heat of the element of thermal element being dispelled the heat in cooling space zone 200, not only can improve cooling effectiveness as mentioned above, can also prevent that in cooling space zone 200 moving airflow goes into zone, main body inner space 300, so the dust that sucks from extraneous air by the air of sending from cooling fan 70 flows in cooling space zone 200, and do not flow at body interior area of space 300, be attached in the optics formation portion 50 and circuit unit 60 that is received upon body interior area of space 300 so can prevent dust as circuit formation portion.Especially, when dust is attached on the transformation component that the light from light source is transformed into image, by by dust blocking to transmitted light, make by projecting lens with image projection on the projecting plane time, the zone that is blocked will be as shadow and projection, and present embodiment can prevent this problem, can improve the quality of projected image.

(4) according to this embodiment, cooling fan 70 is by cooling off with fin 210 plane earth settings near the fin 210 that is formed on the cooling space zone formation face 202, with compare under cooling fan 70 and the occasion that fin 210 is provided with overlappingly, can reduce the thickness of projector 1.

(5), be formed at each fin 210 on the cooling space zone formation face 202 and have the radial fin 210a of portion that forms radial zone with respect to cooling fan 70 (particularly, with respect to cooling fan 70 send mouthfuls 71) respectively according to this embodiment.Thereby, can be so that send radially and the air that spreads flows between fin 210 in opposite directions effectively by forming the radial fin 210a of portion respectively from cooling fan 70.Therefore, fin 210 can be accepted the air of being sent by cooling fan 70 effectively and dispel the heat, and can improve radiating efficiency, can further improve the cooling effectiveness of the element of the MPU62 of heating and light source 51 etc. thus.

(6) according to this embodiment, cover 100 forms and is fixed on the upper shell 11 by having the high aluminium alloy of heat conductivity and pyroconductivity.So, the heat that passes to cooling space zone formation face 202 also can pass to cover 100, so by from the exterior side of cover 100 and the heat radiation that constitutes the face in cooling space zone 200, can improve radiating efficiency.Therefore, can further improve the cooling effectiveness of heater element.

In addition, the invention is not restricted to the foregoing description, also can carry out various changes and improvement etc.The following describes variation.

(variation 1) in the above-described embodiments, fin 210 be formed at the last facial 1a that is equivalent to projector 1 upper shell 11 above.But be not limited to this, also fin can be formed on the side of housing 10 (upper shell 11).By so fin being formed at the position of the influence that is easy to be subjected to outside air convection, can improve radiating efficiency.Thereby can further improve the cooling effectiveness of heater element.

(variation 2) in the above-described embodiments, the upper shell 11, lower house 12 and the cover 100 that constitute housing 10 form by having the high aluminium alloy of heat conductivity and pyroconductivity.But be not limited to this, also can form by having the high metal of heat conductivity and pyroconductivity.For example, also can form, can obtain the effect same with the foregoing description by metals such as aldary or magnesium alloys.

(variation 3) in the above-described embodiments, cover 100 forms by having the high aluminium alloy of heat conductivity and pyroconductivity, dispels the heat from the heat of upper shell 11 by transmitting, and can improve the cooling effectiveness of heater element.Even but cover 100 do not have heat conductivity also can the occasion of cooling heating element under, the material as forming cover 100 also can use for example plastic material with heat conductivity to wait and constitute.So, can amplify the degree of freedom of the material that select to constitute cover 100 or color etc.

(variation 4) in the above-described embodiments, projector 1 is configured to becoming the structure that the maximum Flame Image Process of in as the circuit unit 60 of circuit formation portion heating is cooled off with the maximum light source 51 of heating in the MPU62 of element and the optics formation portion 50.But be not limited to this, cool off needed element and also can use and be used for the heat transfer component 400 that conducts heat to cooling space zone 200,, can improve the cooling effectiveness of element by similarly implementing with the foregoing description.

(variation 5) is in the constructive method of the housing 10 of the foregoing description, the number of the shape of the shape of the shape of the constructive method of the constructive method in cooling space zone 200, body interior area of space 300, cooling space zone formation face 202 and the formation position in housing 10, fin 210 and number, cover 100 and the constructive method of fixing means, air intake opening 110 and exhausr port 220, cooling fan 70 and position etc. is set, be not limited thereto the foregoing description, also can in the scope of the main idea that does not change invention, carry out suitable change and improvement.

The projector 1 of (variation 6) the foregoing description be the transmission-type liquid crystal mode projector.But being not limited to this, also can be that to adopt DLP (registered trademark, digital light is handled) mode and reflective liquid crystal mode be the projector of LCOS (liquid crystal on the silicon chip) mode etc.

Claims (8)

1. the projector of a projected image is characterized in that, has:

Optics formation portion, this optics formation portion have the light source that penetrates light, have the optical transform portion, enlarging projection that will be transformed into the transformation component of image from the light of described light source based on the view data projecting lens by the image of described optical transform portion conversion;

Drive the circuit formation portion of described optics formation portion;

The externally mounted part that constitutes described projector divides side outside to have the housing of radiating part; And

The heat of the element that will generate heat in described optics formation portion and/or described circuit formation portion passes to the heat transfer component of described housing.

2. projector as claimed in claim 1 is characterized in that having:

Be arranged near the cooling fan that air is sent to described radiating part of radiating part that described housing has; With

Cover, this cover cover described radiating part and are fixed on the described housing, make the air flow of being sent by described cooling fan.

3. projector as claimed in claim 1 or 2 is characterized in that described radiating part is formed by fin.

4. as claim 2 or 3 described projectors, it is characterized in that the cooling space zone that forms by described housing and described cover and place described optics and constitute separated the opening of body interior area of space that portion and described circuit constitute the described projector inside of portion.

5. as claim 3 or 4 described projectors, it is characterized in that described fin is formed on the top or side of projector at least.

6. as each described projector among the claim 3-5, it is characterized in that described cooling fan and described fin dispose planely.

7. as each described projector among the claim 3-6, it is characterized in that described fin has with respect to described cooling fan and forms radial zone.

8. as each described projector among the claim 2-7, it is characterized in that described cover is made of the parts of heat conductivity.

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