JP2015096907A - Light source device, projection type display device, and cooling method of light source device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently cool a vertically above portion of an emission part even in any installation attitude.SOLUTION: A light source device includes: an emission part 44; first and second flow passages 60, 64 into which a cooling air flows; and an air introduction plate 37. The light source device takes first, second, third, and fourth installation attitudes turning around the axis in a horizontal direction at 0°, 90°, 180°, and 270°. The first flow passage has a first outlet 62 located upward in a vertical direction from the emission part in the first and second attitudes. The second flow passage has a second outlet 66 located upward in the vertical direction from the emission part in the third and fourth installation attitudes. The air introduction plate is constituted to be rotatable around a rotary shaft 38 which is obliquely inclined by its dead weight to the vertical direction according to the installation attitude. The second flow passage is blocked by the first and second installation attitudes so that an air-quantity from the first flow passsage becomes relatively large, and the first flow passage is blocked by the third and fourth installation attitudes so that the air-quantity from the second flow passage becomes relatively large.

Description

  The present invention relates to a light source device including a cooling structure, a projection display device including the light source device, and a method for cooling the light source device.

  A projection display device such as a projector includes a light source device having a light emitting unit that emits light. When the light emitting unit is used, the upper part in the vertical direction may generate heat more than the lower part in the vertical direction (gravity direction). If the temperature of the light emitting part is not maintained within an appropriate range, the life of the light emitting part may be reduced, or light emission abnormality may occur. Therefore, it is desirable to reduce the temperature difference between the vertically upper portion and the vertically lower portion of the light emitting unit.

  A projection display device normally takes a posture (hereinafter referred to as a floor-standing installation posture) placed on a floor, a table or the like during use. Further, the projection display device may be suspended from the ceiling during use so that the light source device is in a posture opposite to the vertical direction (this posture is hereinafter referred to as a ceiling-mounted posture). .

  In recent years, a projection display device is not only installed on the floor and installed on the ceiling, but also installed in a horizontal orientation (lateral installation posture) on a wall inclined 90 degrees from the installation surface such as a floor or a table. . Since the direction of the light emitting unit changes according to the installation posture, the portion of the light emitting unit that easily generates heat also changes.

  In each of Patent Documents 1 to 5, the cooling of the light source device that can reduce the temperature difference between the vertically upper part of the light emitting unit and the vertically lower part of the light emitting unit in both the floor-mounted installation posture and the ceiling-mounted installation posture. The technology is disclosed.

  The device described in Patent Document 1 is configured to be slidable in one direction, and has a cooling air control member that controls the flow of cooling air according to the position. The cooling air control member moves vertically downward by its own weight in the floor-mounted installation posture and the ceiling-mounted installation posture. Thereby, in any installation posture, the flow rate of the cooling air toward the vertically upper part of the light emitting unit is larger than the flow rate of the cooling air toward the vertically lower part of the light emitting unit.

  The devices described in Patent Documents 2 to 5 include a first flow path through which cooling air toward one part of the light emitting unit flows, and a second flow path through which cooling air toward another part of the light emitting unit flows. . In addition, a switching plate (rectifying plate) that adjusts the amount of cooling air flowing into the first flow path and the second flow path is provided.

  The switching plate is configured to be rotatable by its own weight around a rotation axis along the horizontal direction in a floor-mounted installation posture. In Patent Documents 2 and 3, the switching plate is configured to be rotatable around a rotation axis along a direction parallel to the optical axis of the light emitting unit. In Patent Documents 4 and 5, the switching plate is configured to be rotatable around a rotation axis along a direction perpendicular to the optical axis of the light emitting unit.

  In Patent Document 6, in the floor-mounted installation posture, the ceiling-mounted installation posture, and the horizontal installation posture, the upper portion of the light source lamp in the vertical direction can be efficiently cooled, and the excess of the portion in the vertical direction of the light source lamp can be reduced. A projection display device that prevents cooling is disclosed.

  The projection display device described in Patent Document 6 includes a first flow path and a second flow path that guide the cooling air from the blower to the light source lamp, an air guide plate that rotates around the rotation axis by its own weight, Have The air guide plate is rotatable about a rotation axis parallel to the optical axis of the light source lamp. In each installation posture, the air guide plate selectively guides the cooling air to one of the first flow path and the second flow path.

  In the horizontal installation posture, which is the same as the floor-standing installation posture, the cooling air flows vertically downward from the vertical direction, and then folded back along the shape of the concave mirror toward the light emitting unit (see FIGS. 2 and 3 of Patent Document 6). ). In the ceiling-mounted installation posture and other horizontal installation postures, the cooling air flows from the vertically upper side to the vertically lower side than the light emitting unit toward the light emitting unit (see FIGS. 4 and 5 of Patent Document 6).

JP 2005-173085 A JP 2006-243635 A JP 2011-48210 A JP 2013-117742 A JP 2013-15654 A JP 2010-66367 A

  The inventions described in Patent Documents 1 to 5 do not take into account efficient cooling of the portion positioned vertically above the light emitting unit in the sideways installation posture.

  In the apparatus described in Patent Document 6, in the floor-mounted installation posture and one horizontal installation posture, the cooling air flows vertically upward from the lower side, and then is folded along the shape of the concave mirror toward the light emitting unit. . That is, the cooling air does not go directly to the light emitting part inside the concave mirror, but once flows upward and then goes to the light emitting part. Therefore, the subject that the cooling efficiency of a light emission part falls arises.

  An object of the present invention is to provide a light source device, a projection display device, and a light source device cooling method capable of efficiently cooling a vertically upper portion of a light emitting unit in any installation posture.

  A light source device according to an embodiment includes a light emitting unit that emits light, a first flow path, a second flow path, and an air guide plate. The first flow path is positioned first above the light emitting unit in the first installation posture and the second installation posture rotated by 90 ° about the axis along the horizontal direction from the first installation posture. Has an exit. The first flow path blows cooling air from the blower toward the light emitting unit from the first outlet. The second flow path includes a third installation posture rotated by 180 ° around an axis along the horizontal direction from the first installation posture, and a second rotation rotated by 270 ° around an axis along the horizontal direction from the first installation posture. 4 has a second outlet located vertically above the light emitting portion in the installation posture. The second flow channel blows cooling air from the second outlet toward the light emitting unit. The air guide plate is configured to be rotatable by its own weight around a rotation shaft inclined obliquely with respect to the vertical direction according to the installation posture. The air guide plate closes the second flow path so that the air volume from the first flow path is larger than the air volume from the second flow path in the first and second installation postures. The wind guide plate closes the first flow path so that the air volume from the second flow path is larger than the air volume from the first flow path in the third and fourth installation postures.

  A projection display device according to an embodiment projects a light source device configured as described above, a blower device that generates cooling air, an optical engine that converts light emitted from a light emitting unit into image light, and image light to the outside. A projection lens.

  A light source device cooling method according to an embodiment includes a step of preparing a light source device. The light source device includes a first flow path, a second flow path, and a wind guide plate. The first flow path is positioned first above the light emitting unit in the first installation posture and the second installation posture rotated by 90 ° about the axis along the horizontal direction from the first installation posture. Has an exit. The first flow path blows cooling air from the blower toward the light emitting unit from the first outlet. The second flow path includes a third installation posture rotated by 180 ° around an axis along the horizontal direction from the first installation posture, and a second rotation rotated by 270 ° around an axis along the horizontal direction from the first installation posture. 4 has a second outlet located vertically above the light emitting portion in the installation posture. The second flow channel blows cooling air from the second outlet toward the light emitting unit. The wind guide plate is configured to be rotatable around a rotation axis that is inclined with respect to the vertical direction according to the installation posture. In this light source device cooling method, when the light source device takes the first and second installation postures, the air flow from the first flow path is larger than the air flow from the second flow path. When the plate closes the second flow path and the light source device takes the third and fourth installation postures, the air volume from the second flow path is larger than the air volume from the first flow path. The air guide plate further includes a step of closing the second flow path.

  According to the present invention, the vertically upper portion of the light emitting unit can be efficiently cooled in any installation posture.

It is an external appearance perspective view of the projection type display apparatus provided with the light source device in one Embodiment. It is a perspective view which shows the main components of a projection type display apparatus. It is a perspective view of the light source device in one embodiment. FIG. 4 is a perspective view of the light source device viewed from a direction different from FIG. 3. It is a disassembled perspective view of a lamp unit, a lamp holder, and a duct structure. It is a perspective view of a lamp unit. It is a perspective view of an air blower and a duct structure. It is a perspective view of a duct structure. It is a perspective view of the duct structure seen from the direction different from FIG. It is a top view of a duct structure. It is a top view of the duct structure seen from the direction opposite to FIG. It is a figure explaining the installation attitude | position of a projection type display apparatus. It is a figure explaining the flow of the cooling wind in a 1st installation attitude | position. It is a figure explaining the flow of the cooling wind in a 2nd installation attitude | position. It is a figure explaining the flow of the cooling wind in a 3rd installation attitude | position. It is a figure explaining the flow of the cooling wind in a 4th installation attitude | position. It is a top view of the lamp unit and duct structure of the modification in the 1st installation posture. It is a top view of the lamp unit and duct structure of a modification in the 2nd installation posture. It is a top view of the lamp unit and duct structure of the modification in a 3rd installation attitude | position. It is a top view of the lamp unit and duct structure of the modification in a 4th installation attitude | position.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view of a projection display device including a light source device according to an embodiment of the present invention. FIG. 2 is a perspective view showing main components installed inside the projection display apparatus.

  The projection display device 10 includes a casing 12 that houses each component, a light source device 20, an optical engine 16, and a projection lens 14. The optical engine 16 and the light source device 20 are accommodated in the housing 12.

  The light source device 20 may emit white light. The light emitted from the light source device 20 is optically processed by the optical components in the optical engine 16. Specifically, the optical engine 16 converts light emitted from the light source device 20 into image light for displaying a predetermined image. The projection lens 14 projects the image light that has passed through the optical engine 16 onto an external screen or the like.

  The light emitted from the light source device 20 is incident on the projection lens 14 after being bent 90 degrees by the optical engine 16. That is, the optical axis of the projection lens 14 forms an angle of 90 ° with the traveling direction of the light emitted from the light source device 20. Accordingly, the projection lens 14 projects image light in a direction that forms an angle of 90 ° with respect to the traveling direction of the light emitted from the light source device 20.

  3 and 4 are perspective views of the light source device 20 viewed from different directions. The light source device 20 includes a lamp unit 40, a lamp holder 42, a duct structure 30, and the blower device 18. FIG. 5 is an exploded perspective view of the lamp unit 40, the lamp holder 42, and the duct structure 30.

  The lamp holder 42 holds the lamp unit 40. The blower 18 generates cooling air that cools the lamp unit 40. The duct structure 30 is connected to the blower 18. The duct structure 30 has a plurality of flow paths through which cooling air flows, and is adjacent to the lamp unit 40 and the lamp holder 42. The cooling air emitted from the blower 18 reaches the lamp unit 40 through the flow path formed in the duct structure 30.

  FIG. 6 is a perspective view of the lamp unit 40. The lamp unit 40 includes an arc tube 48 and a reflector 50. The arc tube 48 is held by the reflector 50 via the reflector base. The arc tube 48 is preferably bonded to the reflector base with a heat-resistant adhesive. As the heat-resistant adhesive, for example, there is an adhesive mainly composed of an inorganic material.

  For example, the arc tube 48 may be an ultra-high pressure mercury lamp. The arc tube 48 in the present embodiment includes a substantially spherical light emitting part (bulb) 44 that emits light by discharge, and a cylindrical hermetic sealing part 45 extending from the light emitting part 44 to both sides. The light emitting unit 44 accommodates a pair of electrodes that emit light by discharge. The hermetic sealing portion 45 hermetically seals the conductive member that supplies power to the pair of electrodes in the light emitting portion 44. The conductive member in the hermetic sealing portion 45 may be formed of a foil-like metal.

  In addition, it is preferable that a pair of electrode accommodated in the light emission part 44 is mutually arrange | positioned on both sides of the surface perpendicular | vertical to a horizontal direction also in any installation attitude | position (refer FIG. 12) mentioned later.

  The reflector 50 has a concave reflecting surface and forms a space for accommodating the arc tube 48. The space is open in one direction. The reflector 50 reflects light from the arc tube 48 and emits light in one direction from one open surface of the reflector 50 to the outside. The light emitting unit 44 is preferably disposed in the vicinity of the bottom of the reflector 50.

  One hermetic sealing portion 45 preferably extends from the light emitting portion 44 toward the open surface of the space formed by the reflector 50. The other hermetic sealing portion (not shown) may extend from the light emitting portion 44 to the rear of the reflector 50 through the bottom of the reflector 50. In this case, the arc tube 48 extends in a direction along the traveling direction of the light emitted from the light source device 20.

  A cable connection terminal 49 may be provided on the back side of the reflector 50. Further, the lamp unit 40 may have an electric wire (not shown) that supplies a current to the conductive member in the hermetic sealing portion 45. This electric wire is connected to the arc tube at the most advanced position 46 of the arc tube 48, for example, by welding.

  In the arc tube 48 configured as described above, an electric arc (arc) formed by discharge from the pair of electrodes draws a convex arc in a direction opposite to gravity. Moreover, the high temperature gas in the light emission part 44 rises by buoyancy. Therefore, in particular, the temperature of the vertically upper portion of the light emitting unit 44 is higher than the temperature of the vertically lower portion of the light emitting unit 44. When the temperature of the light emitting unit 44 is higher than a predetermined range, white turbidity occurs and the life of the arc tube 48 is shortened. When the temperature of the light emitting unit 44 is lower than a predetermined range, blackening occurs and the life of the arc tube 48 is shortened, or light emission abnormality such as luminance reduction and flicker occurs. Therefore, it is necessary to reduce the temperature difference between the vertically upper portion of the light emitting portion 44 and the vertically lower portion of the light emitting portion 44 as much as possible. Therefore, it is necessary to cool the portion above the light emitting unit 44 vertically more efficiently than the portion below the light emitting unit 44 vertically.

  Next, a detailed example of the duct structure 30 will be described with reference to FIGS. 4, 5, and 7 to 11. Here, FIG. 7 shows a perspective view of the blower 18 and the duct structure 30. FIG. 8 shows a perspective view of the duct structure 30. FIG. 9 shows a perspective view of the duct structure 30 as seen from a direction different from that in FIG. FIG. 10 shows a plan view of the duct structure 30. FIG. 11 shows a plan view of the duct structure 30 as seen from the opposite direction to FIG.

  In the present embodiment, the duct structure 30 includes the first member 31, the second member 32, the third member 33, and the air guide plate 37 shown in FIG. The duct structure 30 includes a first channel 60 through which cooling air flows, a second channel 64 through which cooling air flows, and a third channel 68 through which cooling air flows. The first flow path 60 and the second flow path 64 are formed by a combination of the first member 31 and the second member 32. The third flow path 68 is formed in the third member 33.

  The first inlet 61 of the first channel 60 and the second inlet 65 of the second channel 64 are arranged adjacent to each other. The third inlet 69 of the third channel 68 is adjacent to the first inlet 61 of the first channel 60 and the second inlet 65 of the second channel 64. The inlets 61, 65, 69 of these flow paths 60, 64, 68 are directed toward the blower 18.

  The first outlet 62 of the first channel 60, the second outlet 66 of the second channel 64, and the third outlet 70 of the third channel 68 are directed to the inner side of the reflector 50. .

  The duct structure 30 extends in one direction from the position of the inlets 61, 65, 69, and in the other direction from the position of the first arm portion 34 constituting the first flow path 60 and the inlets 61, 65, 69. And a second arm portion 35 that extends and constitutes the second flow path 64. The first arm portion 34 preferably extends in a direction that forms a substantially 90 ° angle with respect to the second arm portion 35. More preferably, the length of the first flow path 60 is substantially the same as the length of the second flow path 64.

  The first outlet 62 of the first flow path 60 is directed to the first hemisphere that is part of the light emitting unit 44. Thereby, the cooling air blown from the first outlet 62 of the first flow path 60 flows directly toward the first hemisphere portion of the light emitting unit 44 along the reflection surface of the reflector 50.

  The second outlet 66 of the second flow path 64 is directed to another part of the light emitting unit 44, that is, the second hemisphere, which is the hemisphere opposite to the first hemisphere. As a result, the cooling air blown from the second outlet 66 of the second flow path 64 flows directly toward the second hemispherical portion of the light emitting unit 44 along the reflecting surface of the reflector 50.

  The first outlet 62 of the first flow path 60 is preferably at a position that is substantially symmetric with the second outlet 66 of the second flow path 64 across the tip of the arc tube 48.

  The third outlet 70 of the third flow path 68 faces the tip of the arc tube 48, that is, the hermetic sealing portion 45 and the electrical wire connecting portion 46. The cooling air blown out from the third outlet 70 of the third flow path 68 flows directly toward the tip portions 45 and 46 of the arc tube 48.

  As shown in FIG. 3, the lamp unit 40 has an exhaust port 80 that discharges the cooling air flowing into the space in the reflector 50 to the outside of the light source device 20. In the present embodiment, the exhaust port 80 is formed in the lamp holder 42 that holds the lamp unit 40. Instead, the exhaust port 80 may be configured as a separate part so as to be adjacent to the lamp holder 42. The exhaust port 80 may be formed anywhere as long as the cooling air flowing into the space in the reflector 50 can be discharged.

  The duct structure 30 includes an air guide plate 37 at a boundary portion between the first inlet 61 of the first flow path 60 and the second inlet 65 of the second flow path 64. The air guide plate 37 has a rotation shaft 38 and is configured to be rotatable around the rotation shaft 38 by its own weight. Specifically, the air guide plate 37 has a shape developed on one side with the rotation shaft 38 interposed therebetween. Thereby, according to the direction of the duct structure 30, the baffle plate 37 rotates with dead weight.

  In the state shown in FIG. 10, the air guide plate 37 closes the second inlet 65 of the second flow path 64 and opens the first inlet 61 of the first flow path 60. When the air guide plate 37 is rotated 180 ° around the rotation shaft 38 from the state shown in FIG. 10, the air guide plate 37 closes the first inlet 61 of the first flow path 60 and the second flow path 64. The second inlet 65 is opened. Thereby, the air guide plate 37 in this embodiment selectively opens one of the first flow path 60 and the second flow path 64 and guides the cooling air to the opened flow path.

  In the present embodiment, the air guide plate 37 is disposed at the first inlet 61 and the second inlet 65. However, if the air guide plate 37 can control the flow rate of the cooling air flowing through the first flow path 60 and the second flow path 64, the air guide plate 37 is placed in the middle of the first flow path 60 and the second flow path 64. It may be arranged.

  FIG. 12 is a diagram illustrating the installation posture of the projection display device. FIG. 12A shows the projection display apparatus 10 in the floor-mounted installation posture (first installation posture). FIG. 12B shows a projection in the first lateral installation posture (second installation posture) rotated by 90 ° about an axis along the horizontal direction (axis orthogonal to the paper surface in FIG. 12) from the floor installation posture. A mold display device 10 is shown. FIG. 12C shows the projection display apparatus 10 in a ceiling-mounted installation posture (third installation posture) rotated 180 ° around an axis along the horizontal direction from the floor-standing installation posture. FIG. 12D shows the projection display apparatus 10 in the second horizontal installation posture (fourth installation posture) rotated by 270 ° around the axis along the horizontal direction from the floor installation posture. The second horizontal installation posture is inverted upside down with respect to the first horizontal installation posture. Note that an arrow G in FIG. 12 indicates the direction of gravity.

  The axis along the horizontal direction (axis orthogonal to the paper surface in FIG. 12) is preferably an axis extending in the direction in which the arc tube 48 extends. In other words, it is preferable that the projection display device 10 or the light source device 20 can be installed in a posture rotated by 0 °, 90 °, 180 °, and 270 ° with respect to the extending direction of the arc tube 48. In this case, in any installation posture, the arc tube 48 of the lamp unit 40 extends along an axis along the horizontal direction. In any installation posture, the light source device 20 emits light along the horizontal direction.

  Furthermore, as described above, the projection lens 14 preferably projects the image light in a direction that forms an angle of 90 ° with respect to the traveling direction of the light reflected by the reflector 50. Thereby, the projection lens 14 can project image light in different directions in each installation posture.

  That is, in the floor-mounted installation posture shown in FIG. 12A, the projection lens 14 projects the image light L in a substantially horizontal direction. In the first horizontal installation posture shown in FIG. 12B, the projection lens 14 projects the image light L substantially vertically downward. Thereby, the projection lens 14 can display an image on a floor surface, for example. 12C, the projection lens 14 projects the image light L in a substantially horizontal direction. In the second horizontal installation posture shown in FIG. 12D, the projection lens 14 projects the image light L substantially vertically upward. Thereby, the projection lens 14 can display an image on a ceiling surface, for example.

  Next, the position of the air guide plate 37 and the flow of the cooling air in each installation posture will be described with reference to FIGS. 13-16 is the figure which looked at the duct structure 30 and the lamp unit 40 in each installation attitude | position from the horizontal direction along the extension direction of the arc_tube | light_emitting_tube 48. FIG.

  FIG. 13 shows the flow of cooling air in the floor-mounted installation posture. FIG. 14 shows the flow of cooling air in the first lateral installation posture. FIG. 15 shows the flow of the cooling air in the ceiling installation posture. FIG. 16 shows the flow of cooling air in the second lateral installation posture. As shown in FIGS. 13 to 16, in the present embodiment, the light source device 20 and the projection display device 10 are rotated by 0 °, 90 ° clockwise with respect to the extending direction of the arc tube 48 (direction perpendicular to the drawing sheet). It can be installed in postures rotated by °, 180 ° and 270 °.

  In the floor-mounted installation posture and the first lateral installation posture, the first outlet 62 of the first flow path 60 is located above the light emitting unit 44 in the vertical direction G. In the ceiling-mounted installation posture and the second lateral installation posture, the second outlet 66 of the second channel 64 is located above the light emitting unit 44 in the vertical direction G. As a preferred example for realizing such a configuration, the first outlet 62 of the first flow path 60 is disposed at a position symmetrical to the second outlet 66 of the second flow path 64 with respect to the light emitting unit 44. ing.

  The air guide plate 37 is configured to be rotatable by its own weight around a rotation shaft 38 that is inclined with respect to the vertical direction G in each installation posture. Thus, the air guide plate 37 opens the first inlet 61 of the first flow path 60 and the second inlet 65 of the second flow path 64 in the floor-mounted installation posture and the first lateral installation posture. Can be cut off. Further, the air guide plate 37 opens the second inlet 66 of the second flow path 64 and opens the first inlet 62 of the first flow path 60 in the ceiling-mounted position and the second laterally-positioned position. Can be blocked.

  Preferably, the rotation shaft 38 of the air guide plate 37 is inclined substantially 45 ° with respect to the vertical direction G in a plane perpendicular to the axis along the horizontal direction in each installation posture. At this time, it is more preferable that the rotation shaft 38 of the air guide plate 37 is inclined with respect to the optical axis of the projection lens 14.

  In the floor-standing installation posture and the first horizontal installation posture, the cooling air emitted from the blower 18 flows into the first flow path 60 and the third flow path 68 (see FIGS. 13 and 14). The cooling air W <b> 1 that has flowed into the first flow path 60 flows into the space in the reflector 50 from the first outlet 62, and mainly travels along the reflector 50 toward the light emitting unit 44. The cooling air W <b> 1 that has passed through the light emitting unit 44 is discharged to the outside of the light source device 20 through the discharge port 80. Thus, the cooling air W1 that has flowed out of the first flow path 60 flows obliquely from the upper side to the lower side in the vertical direction G.

  In the ceiling-mounted installation posture and the first lateral installation posture, the cooling air emitted from the blower 18 flows into the second flow path 64 and the third flow path 68 (see FIGS. 15 and 16). The cooling air W <b> 2 that has flowed into the second flow path 64 flows into the space in the reflector 50 from the second outlet 66 and mainly travels along the reflector 50 toward the light emitting unit 44. The cooling air W <b> 2 that has passed through the light emitting unit 44 is discharged to the outside of the light source device 20 through the discharge port 80. Thus, the cooling air W2 that has flowed out of the second flow path 64 flows obliquely from the upper side to the lower side in the vertical direction G.

  As described above, in any installation posture, the cooling winds W1 and W2 flow from the upper side to the lower side in the vertical direction G in the space in the reflector 50. Therefore, the upper part of the arc tube 44 in the vertical direction G can be cooled more efficiently. As a result, the temperature difference between the upper portion of the arc tube 44 in the vertical direction G and the lower portion of the arc tube 44 in the vertical direction G can be reduced. As a result, it is possible to suppress a reduction in the life of the arc tube and abnormal emission.

  Moreover, in any installation posture, there exists an advantage that the part above the perpendicular direction G of the light emission part 44 can be cooled efficiently only with the one air blower 18. FIG. Since it is not necessary to separately provide a plurality of blowers 18 for cooling each part of the arc tube 48, the cost and weight of the light source device 20 or the projection display device 10 can be suppressed.

  The cooling air W3 flowing into the third flow path 68 is reflected from the third outlet 70 in the case of any of the floor-standing installation attitude, the first lateral installation attitude, the ceiling installation attitude, and the second lateral installation attitude. 50 flows into the space inside. The cooling air W3 flowing out from the third outlet 70 of the third flow path 68 mainly passes through the distal end portion of the arc tube 48, that is, the hermetic sealing portion 45 and the electrode wire connection portion 46, and then the discharge port 80. Discharged from. As a result, in any installation posture, the cooling air W3 having a constant air volume cools the tip of the arc tube 48. As a result, it is possible to prevent abnormal light emission of the arc tube 48 and damage to the hermetic sealing portion 45 and the electrode wire connection portion 46.

  It is preferable that the air guide plate 37 is the only member that can move according to the installation posture in order to cool the arc tube 48. Thereby, it is possible to provide a light source device or a projection display device having a relatively simple configuration.

  Hereinafter, a more preferable example of the configuration of the duct structure 30 will be described with reference to FIGS. 7 and 10. The first inlet 61 of the first flow path 60 is formed in a right triangle shape having a line along the rotation shaft 38 of the air guide plate 37 as a hypotenuse. The second inlet 65 of the second flow path 64 is formed in a right triangle shape having a line along the rotation axis 38 of the air guide plate 37 as a hypotenuse. The first inlet 61 and the second inlet 65 are opposed to each other at the hypotenuse and together form a square or rectangular inlet.

  The air guide plate 37 has a substantially triangular shape developed on one side with the rotation shaft 38 interposed therebetween. That is, the air guide plate 37 has a shape corresponding to the first inlet 61 and the second inlet 65.

  In general, the blower 18 often has a cooling air jet 19 that is substantially square or rectangular. The blower outlet 19 of the blower is preferably arranged without being inclined with respect to the square or rectangular inlet formed together with the first inlet 61 and the second inlet 65. Further, the blower outlet 19 of the blower is substantially the same shape as the square or rectangular inlet portion 36 formed together with the first inlet 61, the second inlet 65, and the third inlet 69. Preferably there is. Thereby, the flow of the cooling air becomes smooth, and a decrease in cooling efficiency due to the cooling air can be suppressed.

  Moreover, it is preferable that the jet outlet 19 of the air blower 18 is arrange | positioned without inclining from the gravity direction G in any installation attitude | position. If the outlet 19 of the blower 18 is tilted from the direction of gravity G, the blower 18 needs to be installed tilted with respect to other components. As a result, the installation space for each component is wasted, and the light source device 20 is increased in size.

  FIGS. 17-20 has shown the lamp unit and duct structure of the modification in each installation attitude | position. The lamp unit and duct structure of this modification have a shape that is horizontally reversed with respect to the axis along the vertical direction with respect to the lamp unit and duct structure shown in FIG. Other configurations are the same as those of the lamp unit and the duct structure in FIG.

  In this modification, the light source device and the projection display device are rotated at 0 °, 90 °, 180 °, and 270 ° counterclockwise with respect to the extending direction of the arc tube 48 (direction perpendicular to the drawing sheet). It can be installed. Specifically, FIG. 17 shows a floor-standing installation posture (first installation posture). FIG. 18 shows a second installation posture rotated 90 ° counterclockwise with respect to the floor placement installation posture. FIG. 19 shows a ceiling installation posture (third installation posture) rotated 180 ° counterclockwise with respect to the floor placement installation posture. FIG. 20 shows a fourth installation posture rotated by 270 ° counterclockwise with respect to the floor placement installation posture. That is, the second installation posture of the modification corresponds to the second lateral installation posture shown in FIG. 12C, and the fourth installation posture of the modification is the first lateral orientation shown in FIG. Corresponds to the installation posture.

  In this case, the air guide plate 37 is configured so that the air volume from the first channel 60 is larger than the air volume from the second channel 64 in the first installation posture and the second installation posture. The flow path 64 is blocked. Further, the air guide plate 37 has the first flow rate so that the air volume from the second flow path 64 is larger than the air volume from the first flow path 60 in the third installation posture and the fourth installation posture. Block the road 60.

  While preferred embodiments of the invention have been presented and described in detail above, it will be appreciated that various changes and modifications can be made without departing from the spirit or scope of the appended claims.

  For example, in the above embodiment, the light source device 20 has the third flow path 68 for mainly cooling the tip of the arc tube 48. However, when the amount of heat generated at the tip of the arc tube 48 is small, the light source device 20 may not have the third flow path.

  Moreover, in the said embodiment, the baffle plate 37 has block | closed either the 1st flow path or the 2nd flow path completely in each installation attitude | position. However, the air guide plate 37 may be configured to partially block either one of the first flow path and the second flow path. In this case, the air guide plate 37 adjusts the ratio of the amount of cooling air flowing through the first flow path 60 and the amount of cooling air flowing through the second flow path 64. That is, the air guide plate 37 has the second flow rate so that the air volume from the first flow path 60 is larger than the air volume from the second flow path 64 in the floor-mounted installation posture and the first lateral installation posture. The first flow path 60 is closed so that the air volume from the second flow path 64 is larger than the air volume from the first flow path 60 in the ceiling installation posture and the second lateral installation posture. Block it. As a result, the upper part of the light emitting unit 44 in the vertical direction G can be cooled more efficiently.

  In the above embodiment, the present invention has been described in detail by taking a projection display device as an example. However, the present invention includes not only the projection display device but also any device including the light source device itself or the light source device.

DESCRIPTION OF SYMBOLS 10 Projection type display apparatus 12 Case 14 Projection lens 16 Optical engine 18 Air blower 20 Light source apparatus 30 Duct structure 37 Air guide plate 38 Rotating shaft 40 Lamp unit 42 Lamp holder 44 Light emission part 48 Light emission tube 50 Reflector 60 1st Channel 61 First inlet 62 First outlet 64 Second channel 65 Second inlet 66 Second outlet 68 Third channel 69 Third inlet 70 Third outlet 80 Exhaust port

Claims (10)

A light emitting unit that emits light;
The first installation posture and a first outlet located vertically above the light emitting unit in a second installation posture rotated by 90 ° about an axis along the horizontal direction from the first installation posture, A first flow path for blowing cooling air from a blower toward the light emitting unit from the first outlet;
A third installation posture rotated by 180 ° around the axis along the horizontal direction from the first installation posture and a fourth installation rotated by 270 ° around the axis along the horizontal direction from the first installation posture A second flow path having a second outlet positioned vertically above the light emitting unit in the posture, and blowing out the cooling air from the second outlet toward the light emitting unit;
A wind guide plate configured to be rotatable by its own weight around a rotation axis inclined obliquely with respect to the vertical direction according to the installation posture,
The air guide plate closes the second flow path so that the air volume from the first flow path is larger than the air volume from the second flow path in the first and second installation postures. In the third and fourth installation postures, the light source device closes the first flow path so that the air volume from the second flow path is larger than the air volume from the first flow path. The light source device according to claim 1,
The rotation axis of the air guide plate is inclined at 45 ° with respect to the vertical direction in a plane perpendicular to the axis along the horizontal direction in each installation posture. The light source device according to claim 1 or 2,
The light source device which further has a reflector which reflects the light emitted from the said light emission part in the direction of the said axis along the said horizontal direction. The light source device according to any one of claims 1 to 3,
The light source device, wherein the first outlet is disposed at a position symmetrical to the second outlet across the light emitting unit. The light source device according to any one of claims 1 to 4,
The first inlet of the first flow path is formed in a right triangle shape with a line along the rotation axis of the air guide plate as a hypotenuse,
The second inlet of the second flow path is formed in a right triangle shape having a line along the rotation axis of the air guide plate as a hypotenuse,
The first inlet and the second inlet are opposed to each other at the hypotenuse and together form a square or rectangular inlet,
The blower device has a substantially square or rectangular cooling air outlet,
The light source device, wherein the blower outlet of the blower is disposed without being inclined with respect to the square or rectangular inlet formed together at the first inlet and the second inlet. The light source device according to any one of claims 1 to 5,
A sealing portion that is disposed at a position extending in one direction from the light emitting portion and seals a conductive member that supplies power to the light emitting portion;
A light source device further comprising: a third flow path for guiding a part of the cooling air emitted from the blower to the sealing portion. A light emitting unit that emits light;
An optical engine that converts light emitted from the light emitting unit into image light;
A projection lens that projects the image light to the outside;
A blower for generating cooling air;
The first installation posture and a first outlet located vertically above the light emitting unit in a second installation posture rotated by 90 ° about an axis along the horizontal direction from the first installation posture, A first flow path for blowing out the cooling air from the first outlet toward the light emitting unit;
A third installation posture rotated by 180 ° around the axis along the horizontal direction from the first installation posture and a fourth installation rotated by 270 ° around the axis along the horizontal direction from the first installation posture A second flow path having a second outlet positioned vertically above the light emitting unit in the posture, and blowing out the cooling air from the second outlet toward the light emitting unit;
A wind guide plate configured to be rotatable by its own weight around a rotation axis inclined obliquely with respect to the vertical direction according to the installation posture,
The air guide plate closes the second flow path so that the air volume from the first flow path is larger than the air volume from the second flow path in the first and second installation postures. In the third and fourth installation postures, the projection display device closes the first flow path so that the air volume from the second flow path is larger than the air volume from the first flow path. . The projection display device according to claim 7,
The projection display apparatus further comprising a reflector that reflects the light emitted from the light emitting unit in the direction of the axis along the horizontal direction. The projection display device according to claim 8,
The projection lens projects the image light in a direction that forms an angle of 90 ° from the traveling direction of the light reflected by the reflector;
The projection display device, wherein the rotation axis of the air guide plate is inclined with respect to the optical axis of the projection lens. A light emitting unit that emits light;
The first installation posture and a first outlet located vertically above the light emitting unit in a second installation posture rotated by 90 ° about an axis along the horizontal direction from the first installation posture, A first flow path for blowing cooling air from a blower toward the light emitting unit from the first outlet;
A third installation posture rotated by 180 ° around the axis along the horizontal direction from the first installation posture and a fourth installation rotated by 270 ° around the axis along the horizontal direction from the first installation posture A second flow path having a second outlet positioned vertically above the light emitting unit in the posture, and blowing out the cooling air from the second outlet toward the light emitting unit;
Providing a light source device comprising: a wind guide plate configured to be rotatable about a rotation axis inclined obliquely with respect to a vertical direction according to the installation posture;
When the light source device takes the first and second installation postures, the air guide plate is configured so that the air volume from the first flow path is larger than the air volume from the second flow path. Clogging the second flow path;
When the light source device takes the third and fourth installation postures, the air guide plate is configured so that the air volume from the second channel is larger than the air volume from the first channel. A step of closing the first flow path.

Images