projector

Abstract

Projector. It is possible to suppress the increase in size of the device structure and efficiently cool the connected device. The light source device is provided with an outer casing having a first housing portion detachably housing a connected device as a first cooling target and a second housing portion housing a second cooling target, and a first fan housed in the outer casing, which cools the first cooling target and the second cooling target by sequentially supplying an airflow, which is taken in from the outside of the outer casing, to the first housing portion and the second housing portion, the first housing portion being located on the inflow side of the airflow with respect to the first fan, and the second housing portion being located on the outflow side of the airflow with respect to the first fan.

Description

TECHNICAL FIELD

[0001] The present application relates to a projector. BACKGROUND

[0002] Conventionally, there is a projector that cools a wireless device (connected device) that is detachably attached to an outer casing by using air current taken into the outer casing by an exhaust fan (for example, refer to Patent Literature 1 below).

[0003] Patent Literature 1: Japanese Patent Application Publication No. 2014-235360

[0004] However, in the above projector, since a part of exhaust air after cooling the illumination optical system, the image forming unit, and the light source device, and the like is used for cooling the connected device, it is difficult to sufficiently cool the connected device. Therefore, it is also considered to additionally provide a cooling device for cooling the connected device, but in this case, the device structure is upsized. SUMMARY

[0005] According to one embodiment of the present application, there is provided a projector including an outer casing having a first housing portion that detachably houses a connected device that is a first cooling target and a second housing portion that houses a second cooling target, and a first fan housed in the outer casing that cools the first cooling target and the second cooling target by sequentially supplying air current taken in from outside of the outer casing to the first housing portion and the second housing portion, the first housing portion being located on an inflow side of the air current with respect to the first fan, and the second housing portion being located on an outflow side of the air current with respect to the first fan.

[0006] According to one embodiment of the present application, there is provided a projector including an outer casing having a first housing portion and a second housing portion, a first cooling target that is a connected device detachably housed in the first housing portion, a second cooling target housed in the second housing portion, and an intake fan housed in the outer casing that cools the first cooling target and the second cooling target by sequentially using air current taken in from outside of the outer casing, the first cooling target being located on an inflow side of the air current with respect to the intake fan, and the second cooling target being located on an outflow side of the air current with respect to the intake fan. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 FIG. 1 is a diagram showing the overall structure of a projector according to an embodiment.

[0008] Figure 2 FIG. 4 is a diagram showing a cooling path in a cooling device of the projector.

[0009] Figure 3is a perspective view showing a main portion of the outer casing.

[0010] Figure 4 is a cross-sectional perspective view showing a main portion of the outer casing.

[0011] Figure 5A is an enlarged view showing a main portion structure of the projector of the first modification example.

[0012] Figure 5B is an enlarged view showing a main portion structure of the projector of the second modification example.

[0013] Explanation of Reference Numerals

[0014] 1, 100, 101 projector; 2 light source device; 3 image forming device; 5 outer casing; 6 first housing portion; 7 second housing portion; 8 third housing portion; 9 dustproof filter; 15 cover; 17 partition member; 41 intake fan (first fan); 42 exhaust fan (second fan); 61, 62 duct; 64 intake port; DB device (connected device); K, K1, K2 air current; K3 exhaust; S1 slit (first through-hole); S2 slit (second through-hole). DETAILED DESCRIPTION

[0015] Hereinafter, one embodiment of the present application will be described using the drawings.

[0016] In addition, in each of the following drawings, the scale of the size is sometimes made different according to the constituent elements in order to easily observe the constituent elements.

[0017] Figure 1 is a view showing the entire structure of the projector of the present embodiment.

[0018] The projector 1 of the present embodiment generates image light corresponding to image information by modulating illumination light emitted from the light source device 2, and projects the generated image light onto a projection surface such as a screen after amplifying the image light. As shown in Figure 1 The projector 1 has the light source device 2, the image forming device 3, the projection optical device 4, and the outer casing 5.

[0019] Hereinafter, in the drawings, explanation will be made using an XYZ orthogonal coordinate system as necessary. The Z axis is an axis in the up-down direction of the projector 1. The Y axis is an axis parallel to an optical axis AX of light projected from the projector 1. The X axis is an axis orthogonal to the Y axis and the Z axis.

[0020] Further, in the present embodiment, the direction along the Z-axis is referred to as "up-down direction Z", +Z is referred to as "upper side", -Z is referred to as "lower side", the direction along the X-axis is referred to as "left-right direction X", +X is referred to as "right side", -X is referred to as "left side", and the direction along the Y-axis is referred to as "front-rear direction Y", +Y is referred to as "front side", and -Y is referred to as "rear side".

[0021] Further, the up-down direction Z, the left-right direction X, and the front-rear direction Y are merely names for describing the positional relationship of the respective components of the projector 1, and do not limit the actual setting posture and direction of the projector 1.

[0022] The light source device 2 is connected to a light source connection portion 10a provided on a housing 10 of an image forming device 3 described later.

[0023] The light source device 2 supplies white illumination light WL to an image forming portion 3A of the image forming device 3. The light source device 2 of the present embodiment generates, for example, white illumination light WL including yellow fluorescent light generated by wavelength conversion of excitation light emitted from a light source module including a semiconductor laser by a phosphor and blue light that has passed through the phosphor. Further, the light source device 2 is not limited to a structure using a laser, and can use an LED or a discharge-type lamp.

[0024] The image forming device 3 generates image light using the illumination light WL emitted from the light source device 2. The image forming device 3 has the housing 10, the image forming portion 3A housed in the housing 10, and a color separation light guide optical system 31 housed in the housing 10. The housing 10 houses the image forming portion 3A and the color separation light guide optical system 31 in a state of being held at a prescribed position.

[0025] The image forming portion 3A includes light modulation panels 32R, 32G, 32B and a cross dichroic prism 34. The light modulation panels 32R, 32G, and 32B each form image light by modulating incident light according to image information. The light modulation panels 32R, 32G, and 32B are each constituted by a liquid crystal panel of a light-transmitting type.

[0026] The light modulation panel 32R forms image light corresponding to red light LR by modulating the red light LR according to image information. The light modulation panel 32G forms image light corresponding to green light LG by modulating the green light LG according to image information. The light modulation panel 32B forms image light corresponding to blue light LB by modulating the blue light LB according to image information.

[0027] The cross dichroic prism 34 synthesizes the respective image lights emitted from the respective light modulation panels 32R, 32G, 32B. The cross dichroic prism 34 has a substantially square shape in plan view in which four right-angle prisms are attached to each other, and a dielectric multilayer film is provided at the substantially X-shaped interface at which the right-angle prisms are attached to each other. The image forming section 3A is capable of generating full-color image light by synthesizing the respective color image lights.

[0028] In the present embodiment, the field lenses 33R, 33G, and 33B are respectively provided on the light incident side of the light modulation panels 32R, 32G, and 32B. The field lens 33R parallelizes the chief ray of the red light LR incident to the light modulation panel 32R. The field lens 33G parallelizes the chief ray of the green light LG incident to the light modulation panel 32G. The field lens 33B parallelizes the chief ray of the blue light LB incident to the light modulation panel 32B.

[0029] Although not illustrated, an incident-side polarizing plate is disposed between each of the light modulation panels 32R, 32G, 32B and each of the field lenses 33R, 33G, 33B, and an emission-side polarizing plate is disposed between each of the light modulation panels 32R, 32G, 32B and the cross dichroic prism 34.

[0030] The color-separation light guide optical system 31 separates the illumination light WL from the light source device 2 into the red light LR, the green light LG, and the blue light LB, and guides them to the respective light modulation panels 32R, 32G, 32B. The color-separation light guide optical system 31 has a first dichroic mirror 311, a second dichroic mirror 312, a first mirror 313, a second mirror 314, a third mirror 315, a first relay lens 316, and a second relay lens 317.

[0031] The first dichroic mirror 311 transmits the red light LR and reflects the green light LG and the blue light LB. The second dichroic mirror 312 reflects the green light LG among the green light LG and the blue light LB reflected by the first dichroic mirror 311 and transmits the blue light LB. The first mirror 313 reflects the red light LR. The second mirror 314 and the third mirror 315 reflect the blue light LB. The first relay lens 316 is disposed between the second dichroic mirror 312 and the second mirror 314, and the second relay lens 317 is disposed between the second mirror 314 and the third mirror 315.

[0032] The projection optical device 4 is connected to the projection optical unit connection portion 10b provided in the housing 10 of the image forming device 3. The projection optical device 4 is composed of a projection lens group and, via the projection optical unit connection portion 10b of the housing 10, guides the light from the respective light modulation panels 32R, 32G, 32B of the image forming section 3A. The projection optical device 4 enlarges and projects the image light synthesized by the cross dichroic prism 34 toward the screen. Thus, an enlarged color image is displayed on the screen.

[0033] In recent years, a device (connection device) such as an SMP (Smart Media Player: registered trademark) or the like is sometimes installed in a projector to perform content viewing.

[0034] Generally, in a case where an SMP is installed in a projector, the SMP is connected to an external input terminal of the projector. Therefore, a state is assumed in which the projector is connected to the SMP main body via an HDMI (High-Definition Multimedia Interface: registered trademark) cable or a power supply cable in the projector, so the appearance of the projector at the time of viewing content is degraded.

[0035] Therefore, in a case where the degradation of the appearance is suppressed by disposing the HDMI cable, the power supply cable, and the SMP main body inside the projector, the heat dissipation of the SMP is degraded, the temperature of the SMP in the projector is increased, and thus an operation failure such as a hang-up can occur. In addition, it is also conceivable to additionally provide a fan dedicated to the SMP, but in this case, the cost can be increased due to an increase in the number of components, the projector can be upsized, and the noise and power consumption can be increased due to an increase in the number of fans.

[0036] The projector 1 of the present embodiment can suppress an operation failure of the device by efficiently cooling the device even in a case where the miniaturization of the device structure is achieved by detachably housing the device such as an SMP in the outer casing 5 while suppressing the degradation of the appearance. In addition, in the projector 1 of the present embodiment, the device is not included in the constituent components of the projector.

[0037] The projector 1 of the present embodiment is provided with a plurality of heat sources inside the outer casing 5. Specifically, the first heat source corresponds to the light source device 2, the second heat source corresponds to the light modulation panels 32R, 32G, 32B of the image forming device 3, and the third heat source corresponds to the device DB.

[0038] The outer casing 5 of the present embodiment includes a front face portion 51, a rear face portion 52, a left side face portion 53, a right side face portion 54, a top face portion 55, and a bottom face portion 56. The outer casing 5 is formed in a substantially rectangular parallelepiped shape, for example. In the present embodiment, the outer casing 5 is formed in a substantially rectangular parallelepiped shape. Figure 1 In the present embodiment, the top face portion 55 is illustrated as a transparent component in order to show the internal structure of the outer casing 5.

[0039] The front face portion 51 is a plate-like portion located on the front side (+Y) of the front-rear direction Y and along the XZ face.

[0040] The rear face portion 52 is a plate-like portion located on the rear side (-Y) of the front-rear direction Y and along the XZ face.

[0041] The left side face portion 53 is a plate-like portion located on the left side (-X) of the left-right direction X and along the YZ face.

[0042] The right facial region 54 is a plate-shaped part located on the right side (+X) of the left-right direction X and along the YZ plane.

[0043] The top part 55 is a plate-shaped portion that connects the upper (+Z) ends of the front part 51, the rear part 52, the left part 53 and the right part 54 to each other along the XY plane.

[0044] The bottom part 56 is a plate-shaped portion that connects the lower (-Z) ends of the front part 51, the rear part 52, the left part 53 and the right part 54 to each other along the XY plane.

[0045] The front portion 51 has an opening 51a located approximately in the center. The projection optical device 4 is inserted into the outer housing 5 through the opening 51a and connected to the image forming apparatus 3. In this embodiment, although the front end of the projection optical device 4 protrudes outward from the outer housing 5 through the opening 51a, the front end of the projection optical device 4 may also be located inside the outer housing 5, closer to the opening 51a.

[0046] The projector 1 in this embodiment is equipped with a cooling device for cooling the three heat sources mentioned above. Figure 2 This is a schematic diagram showing the cooling path in the cooling device of projector 1.

[0047] like Figure 2 As shown, the cooling device 40 includes an intake fan (first fan) 41 and an exhaust fan (second fan) 42. That is, the projector 1 of this embodiment also includes an intake fan 41 and an exhaust fan 42. The intake fan 41 and the exhaust fan 42 are housed in the outer casing 5. The intake fan 41 and the exhaust fan 42 can be, for example, axial fans, centrifugal fans, multi-blade fans, etc., but the type of fan is not limited to these.

[0048] The outer casing 5 of this embodiment has a first storage section 6, a second storage section 7, and a third storage section 8. The first storage section 6 detachably stores the device DB. In this embodiment, the device DB is the first object to be cooled by the cooling device 40. The second storage section 7 stores the light source device 2 and the image forming apparatus 3. In this embodiment, the light source device 2 and the image forming apparatus 3 are the second objects to be cooled by the cooling device 40. The third storage section 8 stores the dust filter 9.

[0049] The intake fan 41 cools the device DB as the first cooling target, the light source device 2 as the second cooling target, and the image forming device 3 by sequentially supplying the airflow K drawn from the outside of the outer casing 5 to the first housing portion 6 and the second housing portion 7. The intake fan 41 takes in the airflow K to the inside via an intake port 64 provided to the outer casing 5. The intake port 64 is provided to the right side surface portion 54 of the outer casing 5. In addition, the detailed structure of the intake port 64 is described later.

[0050] In the case of the present embodiment, the intake fan 41 and the intake port 64 are arranged in the left-right direction X. By driving the intake fan 41, the flow of the airflow K from the intake port 64 toward the intake fan 41 is generated.

[0051] In the present embodiment, the first housing portion 6 is located on the intake port 64 side of the intake fan 41. That is, the first housing portion 6 is located on the inflow side of the airflow K with respect to the intake fan 41. The intake fan 41 supplies the low-temperature airflow K drawn from the intake port 64 to the first housing portion 6, and cools the device DB housed in the first housing portion 6.

[0052] In the case of the present embodiment, the intake port 64, the first housing portion 6, and the intake fan 41 are arranged in a straight line along the left-right direction X. According to this structure, the airflow K flows in a straight line from the intake port 64 toward the intake fan 41, and thus, by improving the flowability of the airflow K, it is possible to further improve the cooling performance.

[0053] The second housing portion 7 is located on the opposite side of the intake port 64 with respect to the intake fan 41. That is, the second housing portion 7 is located on the outflow side of the airflow K with respect to the intake fan 41. The intake fan 41 supplies the airflow K to the second housing portion 7, and cools the light source device 2 and the image forming device 3 housed in the second housing portion 7.

[0054] Hereinafter, a part of the airflow K flowing out of the intake fan 41 is referred to as an airflow K1, and the other part of the airflow K flowing out of the intake fan 41 is referred to as an airflow K2.

[0055] In the present embodiment, the airflow K1 from the intake fan 41 is supplied to the image forming device 3. Specifically, the airflow K1 is supplied from an unillustrated opening provided in the casing 10 of the image forming device 3, and the light modulation panels 32R, 32G, and 32B (see FIG. 2) housed in the casing 10 are cooled. Figure 1 After cooling the light modulation panels 32R, 32G, and 32B, the airflow K1 flows into the exhaust fan 42 via the exhaust duct 20.

[0056] Airflow K2 from intake fan 41 cools light source device 2. After cooling light source device 2, airflow K2 flows into exhaust fan 42 via exhaust pipe 20. In this embodiment, airflow K1 after cooling image forming apparatus 3 (which is the second object of cooling) and airflow K2 after cooling light source device 2 (which is the second object of cooling) flow into exhaust fan 42 via exhaust pipe 20. Exhaust fan 42 discharges exhaust K3, containing airflow K1 and airflow K2, to the outside of outer casing 5. Exhaust fan 42 discharges exhaust K3 to the outside via exhaust port 65 provided on the left side face 53.

[0057] Figure 3 This is a perspective view showing the main parts of the outer casing 5. Figure 4 It is shown that... Figure 3 A three-dimensional view of the cross-section of a plane parallel to the XZ plane.

[0058] like Figure 3 and Figure 4 As shown, the air inlet 64 is composed of multiple slits S. In this embodiment, the air inlet 64 is constructed by arranging multiple slit rows SL, in which three slits S are arranged in the vertical direction Z, in the longitudinal direction Y. Based on this structure, the air inlet 64 of this embodiment can effectively draw airflow K from the outside of the outer housing 5 to the inside.

[0059] The projector 1 of this embodiment has a connector portion 16. The connector portion 16 is located on the front side (+Y) of the air inlet 64 in the right side face 54 of the outer housing 5.

[0060] In this embodiment, the projector 1 connects the device DB housed in the first housing 6 with an HDMI cable (not shown) and a power supply cable wound into the first housing 6, thereby electrically connecting the circuit board to the device DB. According to this embodiment, the HDMI cable and power supply cable connected to the device DB do not protrude to the outside of the outer casing 5, thus suppressing any reduction in aesthetic appearance when using the device DB.

[0061] The connector section 16 is electrically connected to the circuit board housed within the outer casing 5. The connector section 16 is an external input terminal capable of transmitting external input from an external device to the projector 1. The connector section 16 includes a USB terminal 16a with a USB standard. In this embodiment, the connector section 16 is, for example, a USB terminal corresponding to the TYPE-A standard. Furthermore, the connector section 16 can be directly connected to the circuit board, or it can be connected to a separate substrate. Additionally, the location of the connector section 16 is not limited to the right side face 54 of the outer casing 5; for example, it can be provided on any one of the front face 51, rear face 52, left side face 53, and top face 55, or at least two of the right side face 54, front face 51, rear face 52, left side face 53, and top face 55 can be distributed among them.

[0062] like Figure 4 As shown, the outer casing 5 of this embodiment also includes a dividing member 17. In this embodiment, the dividing member 17 is integrally provided with the top surface 55 of the outer casing 5. The dividing member 17 is a member that divides the first storage portion 6. The first storage portion 6 is configured by dividing it with the dividing member 17, and is provided in a state where it is recessed into the interior of the outer casing 5 in the vertical direction Z. The upper side (+Z) of the first storage portion 6 opens into the top surface 55 of the outer casing 5. Figure 4 As shown by the double-dotted line, the device DB is housed in the outer casing 5 by inserting the first storage part 6 from the upper side (+Z) in the vertical direction Z.

[0063] The dividing member 17 that divides the first storage section 6 is made of sheet metal, which includes a U-shaped section with a surface parallel to the XZ plane. The dividing member 17 includes a first sheet 17a, a second sheet 17b, and a third sheet 17c that connects the lower ends of the first sheet 17a and the second sheet 17b to each other. The first sheet 17a and the second sheet 17b are arranged in the left-right direction X, which is the inflow direction of the airflow K relative to the first storage section 6.

[0064] A plurality of slits (first through holes) S1 extending in the vertical direction Z are provided on the first plate 17a. The first plate 17a is a through hole that penetrates the first plate 17a. The slits S1 are arranged in the front-rear direction Y. Each slit S1 communicates with the air inlet 64. Here, the slit S1 communicating with the air inlet 64 means that the airflow K flowing in from the air inlet 64 can flow into the first receiving part 6 through the slits S1.

[0065] In this embodiment, when viewed from above in the left-right direction X, which is the inflow direction of the airflow K, each slit S1 overlaps with any one of the plurality of slits S constituting the air inlet 64.

[0066] According to this structure, the slits S1 overlap the air inlet 64 in the inflow direction of the airflow K, and therefore the airflow K drawn in from the air inlet 64 efficiently flows into the first housing portion 6 through the slits S1. Therefore, the first housing portion 6 can improve the cooling effect of the device DB by efficiently flowing the airflow K through the slits S1.

[0067] In addition, a plurality of slits (second through holes) S2 extending in the up-down direction Z are provided in the second plate 17b. The slits S2 are arranged in the front-rear direction Y. In this embodiment, the slits S2 of the second plate 17b and the slits S1 of the first plate 17a overlap each other in the left-right direction X, which is the inflow direction of the airflow K. The slits S2 cause the airflow K to flow out of the first housing portion 6.

[0068] When viewed in plan view in the inflow direction of the airflow K, if the entire slits S1, S2 overlap the device DB, the entire airflow K flowing into the first housing portion 6 through the first slits S1 can hit the device DB and generate a large noise. In addition, the device DB hinders the flow of the airflow K to the side of the second slits S2, and therefore the airflow K is difficult to discharge from the first housing portion 6, and heat can remain in the first housing portion 6.

[0069] In the case of this embodiment, the up-down direction Z positions of the slits S1, S2 are formed so as to project to the outside of the device DB. Thus, a part of the airflow K flowing into the first housing portion 6 does not hit the device DB and generates a flow efficiently discharged from the first housing portion 6 through the second slits S2. Therefore, in the case of this embodiment, the generation of the above noise can be suppressed and heat can be efficiently discharged from the first housing portion 6.

[0070] The outer casing 5 of this embodiment further has a filter support member 18. The filter support member 18 is provided integrally with the top surface portion 55 of the outer casing 5 and the partition member 17. The filter support member 18 is arranged on the intake fan 41 side with respect to the second plate 17b of the partition member 17. The filter support member 18 is a member that constitutes a third housing portion 8 that houses a dust filter 9 together with the second plate 17b. The dust filter 9 is a filter that removes dust contained in the airflow K. The third housing portion 8 is arranged between the first housing portion 6 and the intake fan 41. That is, the dust filter 9 is arranged on the intake fan 41 side of the first housing portion 6.

[0071] The third housing portion 8 is provided in a state of being recessed into the inside of the outer casing 5 in the up-down direction Z. The upper side (+Z) of the third housing portion 8 is open in the top surface portion 55 of the outer casing 5. The dust filter 9 is attached to the outer casing 5 by being inserted into the third housing portion 8 from the upper side (+Z) in the up-down direction Z. In addition, the third housing portion 8 is formed so as to be open in the front-rear direction Y. Figure 4The illustration shows the dust filter 9 inserted into the third storage section 8. The dust filter 9 is detachable from the third storage section 8.

[0072] Here, as described above, when the device DB can be detached from the first storage section 6, dust adhering to the device DB may enter the first storage section 6 along with the device DB.

[0073] In this embodiment, when viewed from above in the left-right direction X relative to the inflow direction of the first storage section 6 along the airflow K, the third storage section 8 is arranged to overlap with the first storage section 6. That is, the dust filter 9 is arranged to overlap with the device DB in the inflow direction of the airflow K. In this embodiment, the planar area of ​​the third storage section (dust filter 9) is set to be larger than the planar area of ​​the first storage section 6 (device DB).

[0074] According to the projector 1 of this embodiment, even when dust adhering to the device DB is discharged from the first receiving section 6 by the airflow K, the dust contained in the airflow K can be removed by the dust filter 9 disposed after the first receiving section 6. Therefore, by using the dust filter 9 to remove dust flowing in from the first receiving section 6 along with the airflow K, adverse conditions such as heat generation and decrease in transmittance caused by dust adhering to other optical components disposed in the outer housing 5 can be suppressed.

[0075] In this embodiment, when viewed from above in the left-right direction (X) of the airflow K from the air inlet 64 to the first receiving section 6, the planar area of ​​the air inlet 64 is set to be larger than the planar area of ​​the first receiving section 6. Furthermore, the planar area of ​​the dust filter 9 is set to be at least the same size as the planar area of ​​the air inlet 64.

[0076] In the case of the projector 1 in this embodiment, a portion of the airflow K drawn in from the air inlet 64 flows into the first receiving section 6, while the remaining portion of the airflow K drawn in from the air inlet 64 flows directly into the dust filter 9 without passing through the first receiving section 6.

[0077] That is, the airflow K drawn in from the air inlet 64 flows into the dust filter 9 regardless of whether it passes through the first receiving part 6. Therefore, in the projector 1 of this embodiment, even if a dust filter is not individually provided at the inlet (air intake surface) of the air inlet 64, the intrusion of dust into the interior can be suppressed.

[0078] like Figure 3 As shown, the device DB and the first storage section 6 for storing the device DB have a shape that is longer in the front-rear direction Y. That is, the length direction of the first storage section 6 intersects (orthogonally crosses) the left-right direction X, which is the inflow direction of the airflow K.

[0079] Further, the dustproof filter 9 and the third housing portion 8 that houses the dustproof filter 9 have a shape that is long in the front-rear direction Y. That is, the length direction of the third housing portion 8 intersects (orthogonally) the left-right direction X that is the inflow direction of the air current K.

[0080] In the present embodiment, the length direction of the third housing portion 8 is along the length direction of the first housing portion 6.

[0081] Suppose a case where the length direction of the third housing portion 8 is different from the length direction of the first housing portion 6. In this case, since the size in the width direction of the third housing portion 8 is set in accordance with the size in the length direction of the first housing portion 6, the device structure is upsized due to the excessive size of the third housing portion 8.

[0082] In contrast, in the projector 1 of the present embodiment, by making the length direction of the third housing portion 8 coincide with the length direction of the first housing portion 6 as described above, the upsizing of the device structure can be suppressed.

[0083] As shown in Figs. 1 and 2, the projector 1 of the present embodiment includes the outer casing 5, the dustproof filter 9, and the third housing portion 8 that houses the dustproof filter 9. Figure 3 Figure 4 As shown in Figs. 1 and 2, the projector 1 of the present embodiment includes the outer casing 5, the dustproof filter 9, and the third housing portion 8 that houses the dustproof filter 9.

[0084] The lid 15 is provided at a position that covers the first housing portion 6 and the third housing portion 8 in the closed state. The lid 15 is configured to be coplanar with the surface of the top surface portion 55 in the closed state. In the present embodiment, the outer casing 5 exposes the upper portion Da of the device DB housed in the first housing portion 6 and the upper portion of the dustproof filter 9 housed in the third housing portion 8 by opening the lid 15. That is, the outer casing 5 of the present embodiment can contact the device DB and the dustproof filter 9 by opening the lid 15, and thus, the attachment and detachment work of the device DB and the dustproof filter 9 with respect to the outer casing 5 can be easily performed.

[0085] As described above, the projector 1 of the present embodiment includes the outer casing 5 that has the first housing portion 6 that detachably houses a device DB that is a first cooling target and the second housing portion 7 that houses the image forming apparatus 3 and the light source apparatus 2 that are second cooling targets, and the intake fan 41 that is housed in the outer casing 5 and cools the first cooling target and the second cooling targets by sequentially supplying an air current K that is sucked from the outside of the outer casing 5 to the first housing portion 6 and the second housing portion 7. The first housing portion 6 is located on the inflow side of the air current K with respect to the intake fan 41, and the second housing portion 7 is located on the outflow side of the air current K with respect to the intake fan 41.

[0086] ​According to the projector 1 of the present embodiment, by disposing the device DB on the inflow side of the airflow K into the intake fan 41, the device DB can be effectively cooled by the low-temperature airflow K. In the projector 1 of the present embodiment, the first housing portion 6 is provided in a space on the inflow side of the intake fan 41 that has not been used for cooling in the past, and the space within the exterior housing 5 can be effectively utilized in the case where two cooling targets are cooled by one intake fan 41. Thus, the projector 1 of the present embodiment can suppress the increase in size of the device structure, and can efficiently cool the device DB that is detachably attached to the exterior housing 5.

[0087] In the projector 1 of the present embodiment, the exterior housing 5 further has a third housing portion 8 that is disposed between the first housing portion 6 and the intake fan 41, and that houses the dust filter 9.

[0088] According to this structure, even in the case where dust attached to the device DB is discharged from the first housing portion 6 by the airflow K, the dust included in the airflow K can be removed by the dust filter 9 disposed at the rear stage of the first housing portion 6.

[0089] In the projector 1 of the present embodiment, when viewed in plan view in the inflow direction of the airflow K with respect to the first housing portion 6, the third housing portion 8 is disposed so as to overlap the first housing portion 6, the length direction of the first housing portion 6 and the length direction of the third housing portion 8 cross the inflow direction of the airflow K, and the length direction of the third housing portion 8 follows the length direction of the first housing portion 6.

[0090] According to this structure, in the inflow direction of the airflow K, the dust filter 9 overlaps the device DB, and thus, the dust in the airflow K can be removed well. Further, compared to the case where the length direction of the third housing portion 8 and the length direction of the first housing portion 6 are different, the increase in size of the device structure can be suppressed.

[0091] In the projector 1 of the present embodiment, the exterior housing 5 has a lid 15 that is openable and closable, and by opening the lid 15, the state where the device DB can be attached and detached with respect to the first housing portion 6 is achieved.

[0092] According to this structure, by closing the lid 15, the first housing portion 6 can be covered, and thus, the aesthetic appearance can be improved. Further, by closing the lid 15, the intrusion of dust into the first housing portion 6 can be suppressed.

[0093] In the projector 1 of the present embodiment, the exterior housing 5 has an intake port 64 that takes in the airflow K into the interior, and a partition member 17 that partitions the first housing portion 6, and the partition member 17 is provided with a first slit S1 that communicates with the intake port 64, and a second slit S2 that causes the airflow K to flow out from the first housing portion 6.

[0094] According to this structure, by efficiently taking in the airflow K into the first housing portion 6 via the intake port 64 and the first slit S1, the cooling efficiency of the device DB can be improved. For example, in the case where the device DB has a connection function with a network, the inside of the first housing portion 6 is communicated with the outside via the intake port 64 and the first slit S1, so the network performance of the device DB can be effectively exhibited.

[0095] In the projector 1 of the present embodiment, the intake port 64, the first housing portion 6, and the intake fan 41 are arranged on a straight line.

[0096] According to this structure, by improving the flowability of the airflow K, the cooling performance can be further improved.

[0097] The projector 1 of the present embodiment further includes a light source device 2, an image forming device 3 that generates image light using light emitted from the light source device 2, and an exhaust fan 42 that is housed in the outer casing 5 and that exhausts the exhaust air K3 after cooling the device DB and the light source device 2 and the image forming device 3. A part of the airflow K flowing out of the intake fan 41, that is, the airflow K1, cools the image forming device 3 and flows into the exhaust fan 42, and another part of the airflow K flowing out of the intake fan 41, that is, the airflow K2, cools the light source device 2 and flows into the exhaust fan 42. The exhaust fan 42 exhausts the exhaust air K3 including the airflow K1 and the airflow K2 to the outside of the outer casing 5.

[0098] According to this structure, by branching the airflow K taken into the outer casing 5, the image forming device 3 and the light source device 2 can be efficiently cooled. In addition, since the airflow K1 and the airflow K2 that have cooled the image forming device 3 and the light source device 2 are exhausted from the outer casing 5 by the one exhaust fan 42, compared to the case where exhaust fans corresponding to each of the airflow K1 and the airflow K2 are respectively provided, the device structure can be suppressed from being large-sized.

[0099] In addition, the technical scope of the present application is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present application. In addition, one mode of the present application can adopt a structure in which characteristic portions of the above-described respective embodiments are appropriately combined.

[0100] (First Modified Example)

[0101] Next, a first modified example of the projector will be described.

[0102] Figure 5A is an enlarged view showing the main part structure of the projector of the first modified example. Further, the same reference numerals are attached to the structures common to the above-described embodiments, and detailed description is omitted.

[0103] As Figure 5AAs shown, the projector 100 of this modified example also includes a duct 61 through which airflow K flows to the intake fan 41 via the air inlet 64. The duct 61 extends in the left-right direction X. In the projector 100 of this modified example, a first receiving portion 6 is provided inside the duct 61. Specifically, the first receiving portion 6 is provided inside the duct 61 such that the long side direction of the first receiving portion 6 is aligned with the extension direction of the duct 61, i.e., the left-right direction X.

[0104] According to the projector 100 of this modified example, the airflow K flows along the long side of the device DB, thus improving the cooling efficiency of the device DB.

[0105] (Second variation)

[0106] Next, we will describe the second variation of the projector.

[0107] Figure 5B This is an enlarged view showing the main structural components of the projector in the second modified example. Furthermore, structures common to the embodiments described above are labeled with the same reference numerals, and detailed descriptions are omitted.

[0108] like Figure 5B As shown, the projector 101 of this modification further includes a duct 62 through which airflow K flows to the intake fan 41 via the air inlet 64. The duct 62 extends in the left-right direction X. In this modification, a first receiving portion 6 is provided inside the duct 62. Specifically, the first receiving portion 6 is provided inside the duct 62 such that the short side direction of the first receiving portion 6 is aligned with the extension direction of the duct 62, i.e., the left-right direction X. That is, the orientation of the first receiving portion 6 in the projector 101 of this modification differs by 90 degrees from the orientation of the first receiving portion 6 in the projector 100 of the first modification.

[0109] According to the projector 101 of this modified example, the airflow K flows along the short side of the device DB. Therefore, compared with the structure of the first modified example, by shortening the pipe 50, the outer casing 5 can be miniaturized in the left-right direction X.

[0110] Furthermore, in the above embodiments, the case in which the device DB is not included in the components of the projector 1 is listed, but the device DB may also be included in the components of the projector.

[0111] That is, the projector in the present embodiment has: an outer casing 5 having a first housing portion 6 and a second housing portion 7; a device DB as a first cooling target detachably housed in the first housing portion 6; a light source device 2 and an image forming device 3 as second cooling targets housed in the second housing portion 7; and an intake fan 41 housed in the outer casing 5 and sequentially cooling the first cooling target and the second cooling targets by an airflow K drawn in from the outside of the outer casing 5. The device DB is located on the inflow side of the airflow K with respect to the intake fan 41, and the light source device 2 and the image forming device 3 are located on the outflow side of the airflow K with respect to the intake fan 41.

[0112] In addition, in the above embodiment, a case where the dustproof filter 9 is arranged between the first housing portion 6 and the intake fan 41 is exemplified, but the dustproof filter 9 can also be arranged between the intake port 64 and the first housing portion 6.

[0113] Also, in the above embodiment, a case where the airflow K2 is supplied to the light source device 2 as the second cooling target and a case where the airflow K1 is supplied to the image forming device 3 as the second cooling target are exemplified, but the part of the projection optical device 4 housed in the outer casing 5 and the power supply unit can also be cooled by supplying the airflow K1 thereto as the second cooling target, and the part of the projection optical device 4 housed in the outer casing 5 and the power supply unit can also be cooled by supplying the airflow K2 thereto as the second cooling target.

[0114] Also, the specific description of the shape, number, arrangement, material, and the like of each component of the light source device and the projector is not limited to the above embodiment and can be appropriately changed. In addition, in the above embodiment, an example in which the light source device of the present application is mounted on a projector using a liquid crystal panel is shown, but is not limited thereto. The light source device of the present application can also be applied to a projector using a digital micromirror device as a light modulation device. Furthermore, the projector can not have a plurality of light modulation devices, and can have only one light modulation device.

[0115] The projector of one embodiment of the present application can have the following structure.

[0116] The projector of one embodiment of the present application has: an outer casing having a first housing portion detachably housing a connected device as a first cooling target and a second housing portion housing a second cooling target; and a first fan housed in the outer casing and sequentially cooling the first cooling target and the second cooling target by supplying an airflow drawn in from the outside of the outer casing to the first housing portion and the second housing portion, the first housing portion being located on the inflow side of the airflow with respect to the first fan, and the second housing portion being located on the outflow side of the airflow with respect to the first fan.

[0117] The projector of one embodiment of the present application can also be configured such that the outer casing further includes a third housing portion, and the third housing portion is disposed between the first housing portion and the first fan and houses a dust filter.

[0118] The projector of one embodiment of the present application can also be configured such that, when the airflow is viewed in the direction of inflow with respect to the first housing portion, the third housing portion is disposed so as to overlap with the first housing portion, the length direction of the first housing portion and the length direction of the third housing portion each cross the direction of inflow of the airflow, and the length direction of the third housing portion is along the length direction of the first housing portion.

[0119] The projector of one embodiment of the present application can also be configured such that the outer casing includes a lid that is openable and closable, and the connected device is made detachable with respect to the first housing portion by opening the lid.

[0120] The projector of one embodiment of the present application can also be configured such that the outer casing includes an air inlet through which the airflow is taken into the inside of the outer casing and a partition member that partitions the first housing portion, and the partition member includes a first through-hole that is in communication with the air inlet and a second through-hole through which the airflow flows out of the first housing portion.

[0121] The projector of one embodiment of the present application can also be configured such that the outer casing includes an air inlet through which the airflow is taken into the inside of the outer casing, and the projector further includes a duct through which the airflow is circulated to the first fan via the air inlet, and the first housing portion is provided in the duct.

[0122] The projector of one embodiment of the present application can also be configured such that the air inlet, the first housing portion, and the first fan are arranged on a straight line.

[0123] The projector of one embodiment of the present application includes a light source device, an image forming device that generates image light using light emitted from the light source device, and a second fan housed in an outer casing that discharges exhaust air, in which a first cooling target and a second cooling target are cooled, to the outside of the outer casing, the light source device and the image forming device are the second cooling target, a part of the airflow flowing out of the first fan cools the image forming device and flows into the second fan, another part of the airflow flowing out of the first fan cools the light source device and flows into the second fan, and the second fan discharges the exhaust air containing the part of the airflow and the other part of the airflow to the outside of the outer casing.

[0124] The projector of one embodiment of the present application can also be configured such that the connected device is a device.

[0125] The projector of one embodiment of the present application can also be configured as follows.

[0126] A projector of one embodiment of the present application includes: an outer casing including a first housing portion and a second housing portion; a first cooling target, which is a connected device that is detachably housed in the first housing portion; a second cooling target that is housed in the second housing portion; and an intake fan that is housed in the outer casing, cools the first cooling target and the second cooling target in this order using airflow drawn from outside the outer casing, and the first cooling target is located on the inflow side of the airflow with respect to the intake fan and the second cooling target is located on the outflow side of the airflow with respect to the intake fan.

Claims

1. A projector, comprising: an outer case having a first housing portion detachably housing a connected device as a first cooling target and a second housing portion housing a second cooling target; and a first fan housed in the outer case, which cools the first cooling target and the second cooling target by sequentially supplying an airflow drawn from outside of the outer case to the first housing portion and the second housing portion, the first housing portion is located on an inflow side of the airflow with respect to the first fan, the second housing portion is located on an outflow side of the airflow with respect to the first fan, the outer case has an air inlet taking the airflow into an inside and a partition member partitioning the first housing portion, the partition member is provided with a first through-hole communicating with the air inlet and a second through-hole making the airflow flow out from the first housing portion.

2. The projector according to claim 1, wherein the outer case further has a third housing portion disposed between the first housing portion and the first fan and housing a dustproof filter.

3. The projector according to claim 2, wherein the third housing portion is disposed to overlap the first housing portion when viewed in a direction of inflow of the airflow with respect to the first housing portion, a length direction of the first housing portion and a length direction of the third housing portion respectively cross the direction of inflow of the airflow, and the length direction of the third housing portion is along the length direction of the first housing portion.

4. The projector according to any one of claims 1 to 3, wherein the outer case has a lid capable of being opened and closed, and the connected device becomes detachable with respect to the first housing portion by opening the lid.

5. The projector according to any one of claims 1 to 3, wherein the projector further has a duct making the airflow pass through the air inlet to the first fan, and the first housing portion is provided in the duct.

6. The projector according to claim 1, wherein the air inlet, the first housing portion, and the first fan are disposed on a straight line.

7. The projector according to any one of claims 1 to 3, comprising: a light source device; an image forming device generating image light using light emitted from the light source device; and a second fan housed in the outer case, which discharges exhaust air after cooling the first cooling target and the second cooling target to outside of the outer case, the light source device and the image forming device are the second cooling target, a part of the airflow flowing out from the first fan cools the image forming device and flows into the second fan, another part of the airflow flowing out from the first fan cools the light source device and flows into the second fan, and the second fan discharges the exhaust air containing the part of the airflow and the other part of the airflow to outside of the outer case.

8. The projector according to any one of claims 1 to 3, wherein the connected device is a device. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 9. A projector comprising: The outer casing has a first storage section and a second storage section; The first cooling object is a connected device that is detachably housed in the first housing section; The second cooling object is housed in the second receiving section; and An intake fan, housed within the outer casing, uses airflow drawn in from outside the outer casing to sequentially cool the first and second objects to be cooled. The first cooling object is located on the inflow side of the airflow relative to the intake fan. The second cooling object is located on the outflow side of the airflow relative to the intake fan. The outer housing has an air inlet for drawing the airflow into the interior and a dividing component for dividing the first storage section. The dividing component is provided with a first through hole communicating with the air inlet and a second through hole allowing the airflow to flow out from the first receiving part.

Images