JP2007093992A - projector - Google Patents

Abstract

An object of the present invention is to efficiently cool a projector by cooling according to a heat source and to provide a projector with low noise.
An upper case as a first case and a lower case as a second case are provided, the first case has a heat source including at least a light source device, and the second case has a fan. Then, the first and second cases are movably combined with each other, and one of the cases is moved during projection so that a space is formed between the fan 105 and the heat source.
[Selection] Figure 4

Description

  The present invention relates to a data projector that projects an image based on a video signal or the like.

  2. Description of the Related Art Today, data projectors that project an image displayed on a personal computer screen, an image of a video signal, an image based on image data stored in a memory card or the like onto a screen are widely used.

  In many cases, this data projector uses a small high-intensity light source such as a metal highland lamp or an ultra-high pressure mercury lamp, and light emitted from the light source is converted into light of three primary colors by a color filter. It is structured to irradiate a light modulation element called DMD (Digital Micro Device) and project the transmitted light or reflected light of the light modulation element onto a screen through a lens group which is a projection optical system having a zoom function. ing.

Since this data projector has a large amount of heat generated from the light source and also incorporates a heat source such as a light source side optical system, a power supply circuit, and a light modulation element, a mechanism for cooling the heat source by installing an air cooling fan is incorporated. .
In recent years, data projectors are required to be smaller and lighter and thinner, and for thin projectors, there have been proposed ones in which an exhaust port is provided in the lower surface of the case and hot air is discharged below the case (for example, Patent Documents). 1).

Further, there has been proposed a projector in which an exhaust duct can be folded and stored so that the projector can be downsized when the projector is not used, such as when storing and storing the projector, and the hot air is appropriately discharged during projection (for example, Patent Documents). 2).
Japanese Patent Laid-Open No. 2005-084079 JP 2005-017749 A

As described above, the data projector is required to be small and thin, and it is desired to reduce the fan diameter of the cooling fan.
In addition, data projectors have been improved in functionality with miniaturization, and circuits and devices incorporated in the projector have been miniaturized and highly integrated, making it difficult to properly cool each circuit and device.

Furthermore, in order to project a bright image, the light source device employs a small and high-intensity discharge lamp, which generates a large amount of heat, and cooling the projector has become more important.
In order to cool the components in the projector with the fan, it is necessary to increase the amount of cooling air. However, in the projector cooling fan with a limited fan area, the air speed is increased to increase the amount of air. There is a problem that the noise increases and the air resistance varies depending on the projector model due to the arrangement of circuit boards and equipment in the projector case, so the efficiency of cooling air intake or exhaust cannot be increased. .

  The present invention solves such a problem, and cools the projector efficiently by cooling according to the heat source, and also provides a low-noise projector.

  The present invention includes a first case and a second case, the first case includes a heat source including at least a light source, the second case includes a fan, and the first and second cases include The projector is combined so as to be movable with respect to each other, and one of the cases is moved during projection so that a space is formed between the fan and the heat source.

  In addition, an air inlet is provided at least behind the first case to allow outside air to be taken into the projector, an air outlet is provided on the front surface of the second case, and a fan is provided on the back side of the air outlet. The fan on the back side of the exhaust port may be housed in front of the optical system installed in the first case, and the fan may be removed from the front of the optical system by moving the case during projection.

Furthermore, the fan provided in the second case may be provided with a fan that is not located in front of the optical system in addition to a fan that is housed in front of the optical system.
A rectifying cover for directing the exhaust to the side may be provided at an exhaust port located in front of the optical system during storage, out of the front exhaust ports in the second case.
In addition, an inlet may be provided also on the right and / or left side of the second case.

Further, the present invention includes a first case and a second case, the first case has a heat source including at least a light source, the second case has a fan, and the first and second cases. And a case in which a space is formed between the fan and the heat source by moving one of the cases at the time of projection. However, the projector may be configured such that each has an exhaust port in the front and the case is moved during projection to enlarge the front surface of the housing to increase the area of the exhaust port.

And as this projector, a fan may be provided in a 1st case and a 2nd case, respectively.
The fan provided in the first case and the second case may be provided on the back side of the exhaust port, and the fan of the first case may be provided in front of the fan of the second case. The fan provided in the first case and the fan provided in the second case may be attached at different angles in the front-rear direction when stored.

Further, the fan arranged in the second case may be a sirocco type fan, or a movable fan may be attached to the first case.
In this projector, a heat radiating plate thermally connected below the heat source may be provided inside the first case. The heat radiating plate may be a heat radiating plate having a large number of through holes, It may be a metal fence for use.

  In addition, the first case and the second case of the projector have a rotating shaft at the rear of the case and can be moved with respect to each other by rotating the front, or the first case is the second case. In some cases, they can move relative to each other by sliding up and down with respect to the case.

  Furthermore, the present invention has a first case and a second case, the first case has a heat source including at least a light source, the second case has a fan, and the first and second cases The cases are movably combined with each other, and one of the cases is moved during projection so that a space is formed between the fan and the heat source. In addition to the first and second cases, A third case, wherein the first and third cases are also movably combined with each other, have an exhaust port on the front surface of the third case, and have a fan on the back side of the exhaust port; And a fan installed in the first case behind the fan during storage and an exhaust port in the first case forward of the fan, and the third case is moved during projection to move the fan Projector in which a space is formed between the heat source Sometimes it is.

  The first case has plate surfaces on the top and bottom and front and back and has heat radiating plates on the left and right, and the heat radiating plate may be a plate-shaped body having a large number of through holes. The swing plate may be a metal fence, and may be provided with a plurality of slits to close the slit, and the swing plate that opens the slit in a state inclined from the rear inner side to the front outer side of the main body case. It may be a heat sink provided.

  Note that the projector having the first, second, and third cases has the second case and the third case slide to the left and right with respect to the first case, so The second case and the third case are movable.

  In the projector according to the present invention, the first case having the heat source including the light source and the second case having the fan are movable with respect to each other. A space can be formed, the ventilation resistance can be reduced, and the cooling efficiency of the heat source can be increased.

  The best mode for carrying out the present invention includes an upper case as a first case and a lower case as a second case, the first case having a heat source including at least a light source, The case has an exhaust fan, and the first and second cases are movably combined with each other, and by moving one of the cases during projection, a space is formed between the fan and the heat source. In the projector, an air inlet is provided at least behind the first case to allow outside air to be taken into the projector, and an air outlet is provided in front of the first and second cases. The exhaust fan is provided on the back side of the first case, and the fan of the first case is provided in front of the fan of the second case.

  In this projector, a heat radiating plate thermally connected below the heat source is provided inside the first case, and this heat radiating plate is a heat radiating plate having a large number of through holes, It may be a metal fence.

  As shown in FIGS. 1 and 2, the data projector according to the present invention has a substantially rectangular parallelepiped shape, and includes a front plate 13, an upper plate 11, a rear plate 19, a right side wall plate 15, and a left side wall plate 17. An upper case as a first case, and a lower case as a second case having a bottom plate 21 and a front plate 23, a right plate 25, a left plate 27 and a rear plate 29 erected around the bottom plate 21. And a projection port 41 and a lock button 47 on the side of the front plate 13, and as shown in FIG. 3, the upper case is lifted with respect to the lower case so as to lift the front of the upper case. And can be rotated.

  When the lock button 47 is pushed in, the claw provided inside the front plate 13 is released from the front plate 23 so that the upper case can be moved, and when the finger is released from the lock button 47, A claw provided on the inner side of the face plate 13 is engaged with the front plate 23, and the front plate 13 of the upper case can be fixed at the raised position or the lowered position.

  On the top plate 11, a power key 51 for turning on / off the power, a power indicator 52 for notifying power on / off, an automatic image quality adjustment key 55, a manual image quality adjustment key 56, and a light source device are turned on. Keys and indicators such as a lamp indicator 53 for indicating that the light source is operating and an overheat indicator 54 for notifying when the light source device is overheated, and an opening / closing lid 59 are provided, and detailed adjustment of the projector is provided inside Various adjustment keys for making settings, a card slot that allows a memory card to be attached and detached, and the like, and a speaker hole 57 that arranges a speaker inside and amplifies the sound are also provided.

  Although not shown in the figure, the back plate 19 receives control signals from an input / output connector section provided with a USB terminal, a D-SUB terminal for inputting image signals, an S terminal, an RCA terminal, etc., a power outlet and a remote controller. As shown in FIGS. 2 and 4, the light receiving device 61, which is a heat source, the light source side optical system 63, the light modulation element 65, and the projection side optical system 67 are provided inside the upper case. The projector components such as a power circuit board and a control circuit board (not shown) and the board 69 are fixed inside the upper surface plate 11 and stored in the upper case.

  The light source side optical system 63 guides the light emitted from the light source device 61 to red light, green light, and blue light, and the light transmitted through the color wheel filter as light flux having a uniform intensity distribution. A light rod, a light source side lens group formed by a plurality of lenses for condensing the light emitted from the light guide rod to the light modulation element 65, and the light from the light source device 61 by the light source side optical system 63. Is applied to the light modulation element 65.

  The projection-side optical system 67 that projects the light that forms an image and is modulated by the light modulation element 65 onto the screen through the projection port 41 is built in the fixed lens group and the movable barrel built in the fixed barrel. The movable lens group is a variable focus lens having a zoom function, and zoom and focus are adjusted by a lens motor.

In such a projector, in the present embodiment, a plurality of axial-flow type exhaust fans 105 are arranged in the vicinity of the front end of the bottom plate 21 and a large number of exhaust ports 37 are provided in the front plate 23 of the lower case.
The upper case back plate 19 and the lower case rear plate 29 are provided with a large number of air inlets 31 and 32, and when the exhaust fan 105 is driven, the outside air sucked from the rear of the housing as shown in FIG. The gas is discharged from an exhaust port 37 provided in the front plate 23 of the lower case.

  Thus, the projector according to the present embodiment has the light source device 61 and other heat sources in the upper case, which is the first case, and the exhaust case 105 in the lower case, which is the second case. The optical system, such as the light source side optical system 63, the projection side optical system 67, and the light modulation element 65, which are fixed to the lower surface of the upper surface plate 11 so as to be housed in the upper case, and the control circuit And a circuit board 69 such as a power supply circuit, a light source device 61, and the like.

  Since the exhaust fan 105 is provided in the vicinity of the front end of the bottom plate 21 that is in front of the space formed by moving the upper case, the air in the housing is lowered through the space formed below the components and circuits. It can be discharged out of the housing through an exhaust port 37 provided in the front plate 23 of the case.

  Therefore, the air that has been sucked in from the back of the housing and has risen in temperature through the gap between the light source device 61, the optical system 63, 65, 67, and the circuit board 69 passes through the space formed under the components and the board 69. Since the air is sucked into the exhaust fan 105, by adjusting the gap between each component and the board 69, the air passing through the required location in the housing and the exhaust fan 105 can be efficiently sucked to easily discharge a large amount of air to the outside. be able to.

  The upper case inner right side wall plate 15 and the left side wall plate 17 are fixed to the lower part of the lower case right side plate 25 and the left side plate 27 near the rear end lower part by the rotation shaft pin 45, and the upper case is rotated. In order to lift the front surface, the rear plate 29 of the lower case can be omitted, and the rear surface of the housing can be formed by the rear plate 19 of the upper case. In this case, the rear plate 29 of the lower case may rise as low as reaching from the bottom plate 21 of the lower case to the lower end of the rear plate 19 of the upper case.

  In addition, the amount of movement of the front plate 13 of the upper case is lower than the height of the front plate 13 depending on the thickness and front / rear length of the casing, and the exhaust fan 105 has a height close to the top plate 11 fixed to the bottom plate 21. When the upper part overlaps the inner side of the front plate 13 of the upper case at the time of projection, an exhaust port 37 may be provided also in the lower part of the front plate 13.

  Further, as shown in FIG. 2, the exhaust fan 105 is arranged in the vicinity of the front plate 23 along the front plate 23 of the lower case, and one of the exhaust fans 105 is delivered to the front of the projection side optical system 67, As shown in FIG. 3, when the exhaust port 37 provided in the front plate 23 is also provided below the projection port 41 of the front plate 13, the exhaust located below the projection port 41 as shown in FIG. A rectifying cover 39 is provided at the port 37, and the hot air discharged from the exhaust port 37 inside the rectifying cover 39 may be discharged laterally by the rectifying cover 39.

  As described above, when the exhaust fan 105 and the exhaust port 37 are located in front of the projection-side optical system 67 at the time of storage, the hot air exhausted from below the projection port 41 is provided by providing the rectifying cover 39 on the exhaust port 37. Can be discharged to the side, hot air does not rise in the light projected from the projection port 41, and the image projected on the screen can be prevented from fluctuating.

  As shown in FIGS. 6 and 7, the right side plate 25 and the left side plate 27 of the lower case are also provided with an air inlet 32, and when the air inside the casing is sucked by the exhaust fan 105, In some cases, fresh outside air sucked from the provided air inlet 32 is mixed, and the temperature of hot air discharged from the air outlet 37 of the front plate 23 is lowered.

In this case, the air inlet 32 may be provided on only one of the right side plate 25 or the left side plate 27 as appropriate, without being limited to the case where the air inlets 32 are provided on both sides of the right side plate 25 and the left side plate 27.
Further, as shown in FIG. 8, a plurality of exhaust fans 105 arranged inside the front plate 23 remove the front of the projection-side optical system 67 and also have exhaust ports 37 provided on the front plate 23 of the lower case. When the front of the projection optical system is removed and moved to lift the front of the upper case as shown in FIG. 9, the exhaust port 37 formed in the front plate 23 is not positioned below the projection port 41. Sometimes.

  In the second embodiment of the data projector according to the present invention, an exhaust port 37 is provided in the lower case as the second case, and an exhaust port 35 is also provided in the upper case as the first case. As shown in FIG. 10, the exhaust port 35 provided in the front plate 13 of the upper case has a height from the vicinity of the lower end of the front plate 13 to the vicinity of the upper end, as shown in FIG. It is provided.

  In the embodiment in which the exhaust ports 35 and 37 are provided in the upper case and the lower case, which are the first case and the second case, as shown in FIGS. 11 and 12, the front plate 13 and the front plate 23 The exhaust fan 101 disposed in the immediate vicinity is fixed near the front end of the upper surface plate 11, and the exhaust fan 105 fixed to the bottom surface plate 21 is disposed immediately after the exhaust fan 101 fixed to the upper surface plate 11.

  Therefore, in this second embodiment, when the front of the upper case is lifted, a space is formed below the light source device 61, the optical system, the substrate 69, etc., and the outside air sucked from the rear of the housing through this space. Passes between the components and the board 69, and the air that absorbed the heat of the parts and the board 69 is discharged by the exhaust fan 105 fixed to the bottom plate 21, and the exhaust fan 105 fixed to the bottom plate 21 is relatively lowered. As a result, a space is also formed behind the exhaust fan 101 fixed to the upper surface plate 11 of the upper case, and the air that has passed between the components and the board 69 through this space is fixed to the upper surface plate 11. Thus, the air can be discharged from the exhaust port 35 of the front plate 13.

  Therefore, the air in the housing is discharged from the many exhaust ports 35 and 37 provided in the front plate 13 of the upper case and the front plate 23 of the lower case, and the exhaust fan 101 fixed to the upper case and the exhaust fan fixed to the lower case A space is formed on the suction side of 105, and the air passing through the gap between the components and board 69 is once merged in a wide space and discharged to the outside by the exhaust fan 105, so the amount of air in each part flowing into the space is reduced. The heat sources in the projector can be efficiently cooled by adjusting the arrangement of parts.

In order to effectively cool the heat source, a heat radiating plate 110 may be provided in close contact with the lower portion of the light source device 61 as shown in FIG.
Although not shown in the drawings, the heat radiating plate 110 may be provided with through holes or fins as appropriate, which may enhance the heat dissipation effect while smoothing the air flow.

Further, the heat radiating plate 110 may be attached not only to the light source device 61 but also to a heat source such as the light source side optical system 63, the light modulation element 65, and the circuit board 69.
Note that the heat radiating plate 110 may be attached to the light source device 61 or the like fixed to the upper surface plate 11 as appropriate in the first embodiment shown in FIGS.

  Further, as shown in FIG. 13, not only the exhaust fan 105 fixed to the lower case is disposed behind the exhaust fan 101 fixed to the upper case, but also the exhaust gas fixed to the upper case as shown in FIG. When the fan 101 is placed behind the exhaust fan 105 that fixes the lower case, and the upper case is closed and the top plate 11 and the bottom plate 21 are substantially parallel, the rotation axis of the exhaust fan 101 fixed to the upper case and the bottom Without rotating the rotation axis of the exhaust fan 105 fixed to the case in parallel, the exhaust fan 105 fixed to the lower case or the exhaust fan 101 fixed to the upper case is tilted in the front-rear direction to be attached at different angles in the front-rear direction. Sometimes.

  In this way, by tilting one of the exhaust fan 101 fixed to the upper case or the exhaust fan 105 fixed to the lower case back and forth, the upper case is fixed to the upper case around the rotation shaft pin 45 so as to lift up the upper case. When the exhaust fan 101 is moved, the exhaust fan 101 fixed to the upper case and the exhaust fan 105 fixed to the lower case are prevented from contacting the exhaust fan 101 fixed to the upper case and the exhaust fan 105 fixed to the lower case. Can be brought close together. For this reason, the rear of the exhaust fans 101 and 105 can be widened to facilitate the storage of components, and when the projector is used, a space can be formed behind the exhaust fan 105 fixed to the lower case to efficiently perform cooling and exhaust. .

  Further, when the exhaust fan 101 fixed to the upper case is disposed behind the exhaust fan 105 fixed to the lower case, the exhaust fan 101 fixed to the upper case is swung back and forth by the fixing pin 131 as shown in FIG. It may be fixed to the top plate 11 as possible.

  When the movable exhaust fan 101 is fixed to the lower surface of the upper surface plate 11 by the fixing pins 131, the fixed pins 131 provided at the rear end or the front end in the vicinity of the upper end of the exhaust fan 101 can be rotated freely. A guide pin 133, which is supported on the lower side and provided near the lower end of the exhaust fan 101, is inserted into the guide groove of the vertical guide 135. The vertical guide 135 is fixed to the bottom plate 21 and fixed to the lower case. The bottom plate 21 is erected in parallel with the exhaust fan 105.

  Therefore, when rotating the upper case up and down, the exhaust fan 101 fixed to the upper case is fixed to the lower case while preventing the exhaust fan 101 fixed to the upper case and the exhaust fan 105 fixed to the lower case from contacting each other. It can be mounted close to the exhaust fan 105.

Further, in the third embodiment of the present invention, as shown in FIG. 16, an exhaust fan 101 larger than the height of the front plate 13 and the height of the front plate 23 is accommodated in the housing.
The exhaust fan 101 rotatably supports a fixing pin 131 provided near the upper end of the exhaust fan 101 near the inner front end of the upper surface plate 11, and a guide pin 133 provided near the lower end of the exhaust fan 101 as a horizontal guide 137. This is a movable fan inserted into the guide groove.

The exhaust fan 101 has a size that is substantially vertical when the upper case is lifted to be in a projectable state, and is positioned so that the lower end is positioned in the immediate vicinity of the bottom plate 21. It is what is arranged.
Therefore, the air in the housing can be discharged from the exhaust ports 35 and 37 provided in the front plate 13 and the front plate 23 using the exhaust fan 101 having a large area.

When closing the upper case, there is provided a link mechanism that tilts the exhaust fan 101 by pushing the exhaust fan 101 backward in accordance with the movement of the lock button 47 when the lock button 47 provided on the upper case is pushed in. It is preferable.
In the fourth embodiment, as shown in FIG. 17, an exhaust fan 101 fixed to the upper case is fixed near the front plate 23 of the lower case, and a sirocco type exhaust fan is fixed to the bottom plate 21 of the lower case. 107 is provided.

  As described above, when the sirocco-type exhaust fan 107 is attached to the bottom plate 21 of the lower case, even if the attachment position of the exhaust fan 107 is changed, there is an obstacle between the exhaust outlet of the exhaust fan 107 and the front plate 23. Since there is no space, it is easy to exhaust the air in the housing from the exhaust port 37 of the front plate 23. The fixed position of the exhaust fan 107 strongly sucks air in a predetermined position in the housing The exhaust fan 107 can be attached in accordance with the position where a large amount of air flows in the gap between the component fixed to the case and the substrate 69.

In the second to fourth embodiments shown in FIGS. 11 to 16, the rear plate 29 of the lower case may be lowered or omitted as in the first embodiment.
In the fifth embodiment, as the upper case moves, the entire upper case can be lifted so as to slide upward relative to the lower case.

In the fifth embodiment, as in the first to fourth embodiments, the exhaust fan 105 may be provided in the lower case, or the exhaust fans 101, 105 may be provided in the lower case and the upper case.
However, in this fifth embodiment, the relative movement between the exhaust fan 105 provided in the lower case and the parts fixed to the upper case or the substrate 69, or the exhaust fan 105 fixed to the lower case and the exhaust fixed to the upper case. In the relative movement with respect to the fan 101, the movement of the exhaust fan 105, the components, and the board 69 is a straight line in the vertical direction. Can be reduced.

Then, the hot air is effectively enclosed through the space where the exhaust fan 105 fixed to the lower case is lowered, and the space where the component and the substrate 69 fixed to the upper case are raised and formed below the component and the substrate 69. It can be discharged outside the body.
Further, in the fifth embodiment, as shown in FIG. 18, the upper case is kept horizontal and moved upward, so that the raised parts and the space formed below the substrate 69 are formed uniformly in the housing. It is desirable to use a sirocco-type exhaust fan 107 and fix the sirocco-type exhaust fan 107 at a predetermined position on the bottom plate 21.

  When moving the upper case up and down horizontally, the lock button 47 is provided on the right side wall plate 15 and the left side wall plate 17, and the right side plate 25 and the left side plate 27 of the lower case are provided with lock holes 49. The left and right sides of the upper case are preferably supported by a lock mechanism.

  In the sixth embodiment, as shown in FIG. 19, the top plate 73 has keys and indicators such as a power key 51 and a power indicator 52, and the front plate 75 has a projection port 41 and an exhaust port 35. And a right auxiliary case and a left auxiliary case as second and third cases, respectively, on the left and right sides of the case main body.

The case body has a cylindrical shape in which the upper and lower sides and the front and rear sides are plate surfaces by the top plate 73, the front plate 75, the back plate 77, and the bottom plate 79. Storage and fixing.
The right auxiliary case includes the right auxiliary upper plate 83 from the upper end of the right side plate 81, the right auxiliary front plate 85 from the front end of the right side plate 81, the right auxiliary rear plate 87 from the rear end of the right side plate 81, and the right side plate 81. The right auxiliary lower plate 89 is extended inward from the lower end of the case, the right auxiliary upper plate 83, the right auxiliary front plate 85, the right auxiliary rear plate 87, and the right auxiliary lower plate 89 are formed in a cylindrical shape to enclose the case body. It is slidably attached to the right end.

The left auxiliary case also has a left auxiliary upper plate 93, a left auxiliary front plate 95, a left auxiliary rear plate 97, and a left auxiliary lower plate 99 that are formed in a cylindrical shape around the left side plate 91, and slides to the left end of the case body. It is attached movably.
Accordingly, in the state where the left auxiliary case and the right auxiliary case are opened to the left and right, as shown in FIG. 19, the projection port 41 and the exhaust port provided in the front plate 75 of the case body can be exposed, and the right side plate 81 is exposed. When the right auxiliary case and the left auxiliary case are contracted so that the left side plate 91 is brought into contact with the right end and the left end of the case body, the left and right widths can be reduced as shown in FIG.

  In the projector of the fifth embodiment, as shown in FIG. 21, the back plate 77 of the case body has an intake port, the right auxiliary front plate 85 and the left auxiliary front plate 95 have an exhaust port, The exhaust fan 105 arranged in the immediate vicinity of the right auxiliary front plate 85 is fixed to the right side plate 81, and the exhaust fan 105 arranged in the immediate vicinity of the left auxiliary front plate 95 is fixed to the left side plate 91.

An exhaust fan 101 is also arranged inside the exhaust fan 105 fixed to the right side plate 81, and the exhaust fan 101 is fixed to the bottom plate 79.
Further, at the right end and the left end of the case body, there is provided a heat radiating plate 120 having air permeability for fixing the upper end to the upper surface plate 73 and fixing the lower end to the bottom surface plate 79. It has an appropriate length to the front.

The heat radiating plate 120 is not limited to a metal plate provided with through holes 121 as appropriate, but may be a metal wire mesh.
Therefore, as shown in FIG. 22, when the right auxiliary case and the left auxiliary case are opened to the left and right and the exhaust fans 101 and 105 are driven, most of the outside air sucked from the intake port of the rear plate 77 passes through the heat sink 120 and the right auxiliary case or The space formed inside the left auxiliary case can be passed through and discharged to the front of the housing.

For this reason, if the heat sink 120 and the light source device 61 and the light modulation element 65 are connected by a good thermal conductor, the heat source such as the light source device 61 and the light modulation element 65 can be effectively cooled.
Further, the heat sink 120 is provided not only with the through-hole 121 but also with a vertically long slit 125 and has a swing shaft 126 along the side of the slit 125 as shown in FIG. When the slit 125 is opened with the tip positioned diagonally forward by the elastic body and the right auxiliary case or the left auxiliary case is closed, the swing plate 127 is pressed by the right side plate 81 or the left side plate 91 to close the slit 125. May be provided.

If such a swing plate 127 is provided on the heat sink 120, the heat sink efficiency of the heat sink 120 can be further increased by forming the swing plate 127 with a good thermal conductor.
As described above, the projector according to the embodiment of the present invention is configured such that the case in which the heat source such as the light source device 61 is stored and the case in which the exhaust fan 105 is attached are movably combined. In some cases, one side is moved between the cases, and a space is formed on the suction side of the exhaust fan 105, so that exhaust efficiency by the exhaust fan 105 is increased, cooling efficiency of the heat source is improved, and noise is also reduced. It is something that can be done.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention at the stage of implementation. In addition, the functions executed in the above-described embodiments may be combined as appropriate as possible. The embodiments described above include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, if the effect can be obtained even if some of the constituent requirements shown in the embodiment are deleted, the configuration from which the constituent requirements are deleted can be extracted as an invention.

1 is an external view showing a first embodiment of a projector according to the present invention. 1 is a horizontal sectional view showing the inside of a first embodiment of a projector according to the present invention. FIG. 1 is an external view showing a projection state of a first embodiment of a projector according to the invention. 1 is a vertical sectional side view of a first embodiment of a projector according to the invention. The front view which shows the modification of 1st Example of the projector which concerns on this invention. FIG. 6 is a horizontal sectional view showing another modification of the first embodiment of the projector according to the present invention. The side view of the other modification of 1st Example of the projector which concerns on this invention. The horizontal sectional view of the 3rd modification in the 1st example of the projector concerning the present invention. The front view of the 3rd modification in 1st Example of the projector which concerns on this invention. The front view which shows 2nd Example of the projector which concerns on this invention. The horizontal sectional view showing the inside of the 2nd example of the projector concerning the present invention. FIG. 9 is a vertical sectional side view of a second embodiment of the projector according to the invention. FIG. 10 is a vertical sectional side view showing a modification of the second embodiment of the projector according to the invention. FIG. 10 is a vertical sectional side view showing a second modification of the second embodiment of the projector according to the present invention. FIG. 10 is a vertical sectional side view showing a third modification of the second embodiment of the projector according to the invention. FIG. 9 is a vertical sectional side view showing a third embodiment of the projector according to the invention. FIG. 10 is a vertical sectional side view showing a fourth embodiment of the projector according to the invention. FIG. 9 is a vertical sectional side view showing a fifth embodiment of a projector according to the invention. The external view which shows the state at the time of the projection of 6th Example of the projector which concerns on this invention. The external view which shows the state at the time of accommodation of 6th Example of the projector which concerns on this invention. The horizontal sectional view which shows the state at the time of accommodation of 6th Example of the projector which concerns on this invention. The horizontal sectional view showing the state at the time of projection of the 6th example of the projector concerning the present invention. The horizontal sectional view which shows the modification of 6th Example of the projector which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Top plate 13 Front plate 15 Right side wall plate 17 Left side wall plate 19 Back plate 21 Bottom plate 23 Front plate 25 Right side plate 27 Left side plate 29 Rear side plate 31 Inlet port 32 Inlet port 35 Exhaust port 37 Exhaust port 39 Rectification cover 41 Projection port 45 Rotating shaft pin 47 Lock button 49 Lock hole 51 Power key 52 Power indicator 53 Lamp indicator 54 Overheat indicator 55 Automatic image quality adjustment key 56 Manual image quality adjustment key 57 Speaker hole 59 Opening / closing lid 61 Light source device 63 Light source side optical system 65 Light modulation Element 67 Projection side optical system 69 Substrate 73 Top plate 75 Front plate 77 Back plate 79 Bottom plate 81 Right side plate 83 Right auxiliary top plate 85 Right auxiliary front plate 87 Right auxiliary rear plate 89 Right auxiliary lower plate 91 Left side plate 93 Left auxiliary top Plate 95 Left auxiliary front plate 97 Left auxiliary rear plate 99 Left auxiliary lower plate 100 Kuta 101,105,107 exhaust fan 110 radiating plate 120 radiating plate 121 through hole 125 slit 126 swing shaft 127 swing plate 131 fixing pin 133 guide pin 135 vertical guide 137 horizontal guide

Claims (23)

  A first case, a second case, a heat source including at least a light source in the first case, a fan in the second case, and the first and second cases A projector that is movably combined and moves one of the cases during projection so that a space is formed between the fan and the heat source.   The projector according to claim 1, wherein an air inlet is provided at least behind the first case so that outside air can be sucked into the projector.   The second case has an exhaust port on the front surface, and has a fan on the back side of the exhaust port. When the fan is stored, the fan is stored in front of the optical system installed in the first case. The projector according to claim 1 or 2, wherein the fan is removed from the front of the optical system by moving a case.   The fan provided in the second case is provided with a fan that is not located in front of the optical system in addition to a fan that is housed in front of the optical system. Projector.   4. The rectifying cover for directing the exhaust to the side is provided at an exhaust port located in front of the optical system during storage in the front exhaust port in the second case. 4. The projector described in 4.   The projector according to any one of claims 2 to 5, further comprising an intake port on a right side and / or a left side of the second case.   The first and second cases each have an exhaust port in front, and the case is moved during projection to enlarge the front surface of the housing to increase the area of the exhaust port. The projector according to claim 1 or claim 2.   The projector according to claim 7, wherein each of the first case and the second case has a fan.   The fan provided in the first case and the second case is provided on the back side of the exhaust port, and the fan of the first case is disposed in front of the fan of the second case. The projector according to claim 8, wherein the projector has a feature.   The projector according to claim 8, wherein the fan provided in the first case and the fan provided in the second case are attached at different angles in the front-rear direction when stored.   9. The projector according to claim 8, wherein the fan disposed in the second case is a sirocco type fan.   The projector according to claim 7, wherein a movable fan is attached to the first case.   The projector according to any one of claims 4 to 12, further comprising a heat radiating plate thermally connected to a lower portion of the heat source in the first case.   The projector according to claim 13, wherein the heat radiating plate is a heat radiating plate having a large number of through holes.   The projector according to claim 13, wherein the heat dissipation plate is a metal fence for heat dissipation.   16. The first case and the second case are movable with respect to each other so as to have a rotating shaft at the rear of the case and rotate forward. A projector described in any one of the above.   The first case and the second case are configured such that the first case is movable relative to the second case by sliding up and down relative to the second case. Item 16. The projector according to any one of Items 15.   A third case in addition to the first and second cases, the first and third cases are movably combined with each other, and an exhaust port is provided on the front surface of the third case; A fan is provided on the back side of the exhaust port, and a fan installed in the first case is provided behind the fan during storage, and an exhaust port is provided in the first case in front of the fan. The projector according to claim 1, wherein a space is formed between the fan and the heat source by moving the case.   The projector according to claim 18, wherein the first case includes a heat radiating plate having plate surfaces on the top and bottom and front and back and having air permeability on the left and right.   The projector according to claim 19, wherein the heat radiating plate is a plate-like body having a large number of through holes.   The projector according to claim 19, wherein the heat radiating plate is a metal fence.   The heat radiating plate has a plurality of slits, and is a swinging plate that can close the slits, and includes a swinging plate that opens the slit in a state inclined from the rear inner side to the front outer side of the first case. The projector according to claim 19.   The second case and the third case are movable with respect to the first case by sliding the second case and the third case left and right with respect to the first case. The projector according to any one of claims 18 to 22, wherein the projector is configured as described above.

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