TWI376565B - Projector - Google Patents

Description

1376565 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a projector. [Prior Art] Conventionally, there has been known a projector including a light source device, a light modulation device that modulates a light beam emitted from a light source device based on image information to form image light, and a projection optical device that enlarges projected image light. In the projector, a light-emitting type light source device is often used. The light source device includes, for example, a light source lamp that discharges light between a pair of electrodes, and a reflector that emits a light beam emitted from the light source lamp in a predetermined direction. Further, the above-mentioned light source device generates heat convection due to heat generated by light emission, and causes a temperature difference between the upper side and the lower side of the light source lamp. Thus, when the temperature distribution of the light source lamp is largely deviated, it is easy to cause blackening of the wall of the light source lamp, etc., causing the brightness of the light source lamp to be lowered or the light source lamp to be broken. Therefore, in order to effectively cool the light source lamp in order to alleviate the temperature difference between the upper side and the lower side of the light source lamp, a technique of blowing air substantially horizontally from the side of the light source lamp by a cooling fan has been proposed (Reference: Japanese special open) Bulletin 2002-23261). The technique described in the above document is designed on the premise that the image light is projected in a substantially horizontal direction, that is, in a so-called normal posture (a state placed on a setting surface such as a table) and a hanging posture (suspended from a ceiling or the like). The image is projected from the projector in a state where the phase is opposite to the normal posture. That is, 'whether it is in a positive posture; 5 counts μ-owe & tl, Annu and Hang Anshi both cast the heart image from the projector, blow the air in the horizontal direction to the light source, and alleviate the light source. And the temperature difference between the upper side and the lower side is to efficiently cool the light source lamp. However, in the technique described in the above document, when the image light is projected in the substantially vertical direction (upward: direction) or the upper projection position (the & potential projected to the upper side) or the lower (fourth) posture (the posture projected to the lower side) When the image light is projected from the projector, the cooling fan is located on the upper side or the lower side of the light source lamp, and the air is blown from the cold part fan in the vertical direction. For example, when the air is blown from the lower side toward the upper side by cooling a few fans, that is, the lower side of the light source lamp is mainly cooled, causing a large temperature difference between the upper side and the lower side of the light source lamp, and the light source lamp cannot be efficiently cooled. . SUMMARY OF THE INVENTION A primary object of the present invention is to provide a projector capable of efficiently cooling a light source lamp in response to projection of image light in various postures. The technical device of the present invention includes a light source lamp and a cooling device for cooling the light source lamp, wherein the cooling device includes a plurality of cooling fans that blow air to the light source lamp; and each of the air of the plurality of cooling fans The direction 'sets are set to different directions. Here, the plurality of cooling fans may blow air directly to the light source lamp or blow air through the duct. In the present invention, for example, when image light is projected from the projector in a normal swing or a suspended posture, the air blowing direction of one of the plurality of cooling fans may be first set to the horizontal direction. With this setting, when the image light is projected from the projector in a positive tilt position of 1376565 or in a suspended position, by driving the cooling-fan, the Xiao light source blows air in the horizontal direction to relax the upper side and the lower side of the light source lamp. The temperature difference on the side is to efficiently cool the light source lamp. Moreover, since the air blowing directions of the air of the plurality of cooling fans are set to mutually different directions, when the image light is projected from the projector by projecting in the upper (4) or lower projection position, even if the cooling fan blows the light source lamp Air = air supply direction is set to the air blowing direction from the lower side to the upper side, and Lu can also set the air blowing direction of at least one of the other cooling fans to the light source to blow the air in the air blowing direction from the upper side to the lower side or The direction of the air supply in the horizontal direction. When the image light is projected from the projector in the upper projection position or the lower projection posture, the air source lamp is blown from the upper side toward the lower side or in the horizontal direction by driving at least one of the other cooling fans. The temperature difference between the upper side and the lower side of the light source lamp can be alleviated to efficiently cool the light source lamp. Therefore, it is possible to efficiently cool the light source lamp in accordance with the case where the image light is projected from the projector in various postures, and the object of the present invention is achieved. In the projector of the present invention, the cooling device includes two cooling fans; the air blowing directions 'when viewed in a direction along an optical axis of the light beam emitted from the light source lamp' are respectively set to be orthogonal to the optical axis And the direction of each other. Here, the respective air blowing directions of the air of the two cooling fans are not limited to the configuration set to be orthogonal to the optical axis. Each of the air blowing directions may be set to a direction orthogonal to the optical axis when viewed from the direction of the optical axis, i.e., may be set to 90 for the optical axis. The direction in which the angles are crossed. 11 1376565

For example, the projector may be configured to rotate the projector 90 by centering on the optical axis of the light beam emitted from the light source lamp. It can be set to each posture such as a positive swing posture, an upper projection posture, a hanging posture, and a lower projection posture. According to the above configuration, since the air blowing directions of the air of the two cooling fans in the present invention are set as described above, it is possible to configure the fan to be cooled by at least one of the two cooling fans in the above-described respective postures. The light source lamp blows air from the upper side toward the lower side or in the horizontal direction. As described above, by configuring the projector in the above-described manner, it is possible to efficiently cool the light source lamp in accordance with the case where the image light is projected in the above various postures. Further, since the cooling device is provided with two cooling fans, it is possible to efficiently cool the light source lamp with a minimum number of cooling fans corresponding to the It shape in which the image light is projected in the above various postures, and the size of the projector is not hindered. In the projector of the present invention, each of the air blowing directions is preferably set to a horizontal direction when the image light is projected from the projector in a predetermined posture. Each of the air blowing directions in the present month is set to a horizontal direction when the image light is projected from the projector in a predetermined posture such as a normal posture. Thereby, the projector is set as described above so that the projector can be rotated 90 by centering on the optical axis. In this case, it is possible to surely blow air to the light source lamp from the upper side toward the lower side or in the horizontal direction by at least one of the two cooling fans. In the technology machine of the present month, the respective air blowing directions are preferably set to be shifted from each other in a direction orthogonal to the respective blowing directions. In the present invention, since the air blowing directions are set as described above, when the two cooling fans are driven, 'the air of one cooling fan and the air of the other cooling fan from 1376565 are not cooled by the air blown by the fan. One does not enter the blowing outlet of the other cooling fan. So 2 well blows air from the two cooling fans to more efficiently cool the light '-X' because it can be controlled to blow air from a cooling fan, that is, through the light source The lamp is twisted, and the second fan enters the blowout port of the other cold head fan, so that the cooling fan is prevented from being deteriorated due to heat. The preferred structure of the projector of the present invention is 4, and the cooling has two The cold money fan; each of the air blowing directions is respectively arranged in a direction orthogonal to the optical axis and orthogonal to each other when viewed in a direction along an optical axis of the light beam emitted from the light source lamp. Here, a plurality of The air blowing direction of the air of the cooling fan is not limited to the configuration set to be orthogonal to the optical axis, and may be set to be orthogonal to each other when viewed from the direction along the optical axis, # According to the invention, the projector is set to the above-described respective postures by rotating the projector 90 by centering the optical axis as described above. Since the air blowing directions of the air of the plurality of cooling fans can be set as described above, in any of the above-described postures, any one of the plurality of cooling fans can be used to turn the light source lamp from the upper side toward the lower side. Or blowing air in the horizontal direction. Thus, if the projector is configured as described above, the light source lamp can be efficiently cooled corresponding to the case where the image light is projected in the above various postures. Further, since the cooling device is provided with two cooling fans, It is possible to efficiently cool the light source lamp with a minimum number of cooling fans corresponding to the case of 1376565 in which the image light is projected in the above various postures, without hindering the miniaturization of the projector. In the projector of the present invention, the respective air blowing directions are When the image light is projected from the projector in a predetermined posture, it is set to a vertical direction or a horizontal direction, respectively. In the present invention, a plurality of coolings are performed. Each of the fan blowing directions is set to be perpendicular to the vertical direction or the horizontal direction when viewed from the direction of the optical axis when the image light is projected from the projector in a predetermined posture (for example, a positive posture). When the projector is set as described above, the projector can be rotated 90 by centering on the optical axis. When the projector is set to the above-described respective postures, at least one of the plurality of cooling fans can be used in each of the above-mentioned safety devices. A cooling fan is configured to blow air from the upper side toward the lower side or in the horizontal direction. The projector of the present invention preferably has a fan drive control unit for controlling the operation of the plurality of cooling fans. The fan drive control unit controls the operation of the plurality of cooling fans according to the posture of the projector. Here, the fan drive control #, for example, identifies the posture of the projector in the following manner. The operating mechanism for inputting the posture of the projector (for example, the forward posture, the hanging posture, the upper projection posture, and the lower projection posture) is set by the user. Further, the fan drive control unit recognizes the posture of the projector by inputting an operation signal from the operation mechanism. Further, the projector is provided with a tilt state detecting unit such as a rotation sensor for detecting the posture of the projector. x, the fan drive control unit recognizes the posture of the projector by inputting an operation signal from the tilt state detecting unit by 1368565. In the present invention, the projector includes a fan that controls the operation of a plurality of cold head fans according to the posture of the projector. Drive control unit. As a result, since the fan drive control unit can control the operation of the plurality of cooling fans in accordance with the projector posture, the light source lamp can be efficiently cooled in accordance with the case where the image light is projected in the above various postures. [Embodiment] [First Embodiment] Hereinafter, a first embodiment of the present invention will be described based on the drawings. [Configuration of Projector] FIG. 1 is a block diagram showing a schematic configuration of the projector 1. The projector 1 modulates the light beam emitted from the light source according to the image information to open a color shirt image (bokeh ℑ image light), and enlarges and projects the color image onto the screen S c . This projector! As shown in FIG. 1, the image projection unit 1 〇, the operation mechanism 20, the first cooling device 3A and the second cooling device 3〇b, the control device 40, and the respective members 1 are housed and arranged therein. 3外A, 3〇B, 4〇 of the exterior frame 5〇 (refer to FIG. 3A to FIG. 3D). Fig. 2 is a view showing a schematic configuration of a video projection unit. In addition, in FIG. 1, for simplification of description, the video projection unit 10 is configured to show only the i-th light source device 11A, the second light source device 11B, the liquid crystal panel 151, and the projection lens 16. In Fig. 2, 'for simplicity of explanation', the projection direction from the projection lens i6 is the Z axis, and the two axes orthogonal to the z axis are the X axis and the γ axis. 1376565 The following figures are also detailed. Further, the z minus x-axis is a plane formed by the light #^ of the light beam from the first light source device UA and the second light source skirt 11b to the projection lens 16 as shown in FIG. 2 (the drawing is parallel to the paper surface in FIG. 2). The planes are orthogonal to each other. In addition, the Y-axis is an axis orthogonal to the plane.

The image projection unit H) forms image light under the control of the control device 4Q and enlarges and projects the image projection unit 1 on the screen Su. The first light source device I1A, the second light source device 11B, and the illumination optical device 12 are provided as shown in FIG. 2 . A color separation optical device 13, a relay optical device 14, an optical device, and a projection lens 16 as a projection optical device. The first light source unit i HA and the second light source unit i 11B are means for emitting a light beam toward the illumination optical unit 12. Further, since each light source device uA has the same configuration, only the first light source device "A will be described below. In addition, the same reference numerals are given to the second light source device 丨1B, and the description thereof will be omitted. The first light source device 11A includes a light source device body ln (FIG. 2), and a light source lamp 11n that is driven by a predetermined driving voltage (lighting) under the control of the control device 40 to constitute the light source device body U1 (FIG. i, FIG. 2) Light source driving unit 112 (Fig. 1). As shown in Fig. 2, the light source device body 111 includes a light source lamp 11U that discharges light between a pair of electrodes U11A, a main mirror U12, a parallelizing lens 1113, and a lamp cover 1114. Further, the detailed configuration of the globe UM will be described simultaneously with the description of each of the cooling devices 30A, 3B. Further, the light beam emitted from the light source lamp 1111 is reflected by the main mirror i丨12 on the front side of the light source device main body U1 to be concentrated light, and the lens is parallelized by the lens! 11 3 is parallelized and fired into the illumination optics (S) 12 1376565 device 12. Here, the light source lamp 1111 is mostly a tooth lamp or a metal lamp, or a high pressure mercury lamp. Further, the main mirror 1112 is configured by a rounded reflector in Fig. 2, but may be configured as a parabolic reflector that substantially parallelizes and reflects the light beam emitted from the light source Uu. The parallelizing lens 111 3 can be omitted at this time. As shown in Fig. 2, each of the light source device bodies 111 constituting each of the light source devices 11A and 11B is arranged to face each other in the X-axis direction in a state where the optical axis A of the emitted light beams is substantially uniform. As shown in FIG. 2, the illumination optical device 12' includes two first lens arrays 121, a light guide 稜鏡i2, a second lens array 122, and a polarization conversion element 123 which are provided corresponding to the respective light source devices ,8 and 11B. And the light beams emitted from the respective light source devices η, are divided into: the two lens arrays 121 are divided into a plurality of partial light beams. The plurality of partial light beams emitted from the respective first lens arrays 121 are biased toward substantially 90 by the light guides 〇12. It travels in the same direction (+ζ axis direction) and is imaged near the 帛2 lens array m. Each of the partial light beams emitted from the second lens array 122 is incident on the central axis (principal ray) perpendicularly to the incident surface of the polarization conversion element 123, and transmitted through the polarization conversion element 123 to emit linearly polarized light as a money type. The plurality of partial light beams emitted from the polarization conversion element #123 as linearly polarized light and transmitted through the superimposing lens 124 are superimposed on the three liquid crystal panels which are described later on the optical device 15. The color separating optical device 13, such as the one shown in FIG. 2, does not have two dichroic mirrors 131, 132 and a mirror 133' which has a dichroic mirror 131, 132 and a counter 13 1376565. The plurality of partial beams emitted by the device 12 are separated into three colors of red, green and blue. As shown in FIG. 2, the relay optical device 14' includes an incident side lens M1, a relay lens 143, and mirrors 142, 144 having color light (for example, red light) separated by the color separating optical device 13 to the optical device. The function of the red light side liquid crystal panel will be described later. The optical device 15 ′ is a device that modulates the incident light beam based on the image information to form a illuminating image (color image). As shown in FIG. 2, the optical device 15 includes three liquid crystal panels 151 (the liquid crystal panel on the red light side is i51R, the liquid crystal panel on the green light side is 151 G, and the liquid crystal panel on the blue light side is 15 丨 B). The incident side polarizing plate 1 5 disposed on the front side of the optical path of each of the liquid crystal panels 151, the emission side polarizing plate 丨5 3 disposed on the rear side of the optical path of each liquid crystal panel 15 1 , and the orthogonality as the color combining optical device Color separation 稜鏡154. The two incident-side polarizing plates 1 5 2 ' transmit only polarized light having substantially the same polarization direction as the polarization direction of the respective beams split by the color separation optical device 13 and are absorbed by the polarization conversion element 123, and absorb other light beams. A structure in which a polarizing film is adhered to a light-transmitting substrate. The three liquid crystal panels 151' have a configuration in which a liquid crystal of an electro-optical substance is hermetically sealed in a pair of transparent glass substrates, and the alignment state of the liquid crystal is controlled in accordance with a driving signal from the control device 4 to modulate the emission from the incident side polarizing plate 152. The polarization direction of the polarized beam. The three output side polarizing plates 1 153 have substantially the same function as the incident side polarizing plate 丨 52, and transmit polarized light having a certain direction among the light beams emitted through the liquid crystal panel 15 1 and absorb other light beams. (S) 14 1376565 The orthogonal color separation 稜鏡 154 synthesizes color light beams which are modulated by the color light emitted from the output side polarizing plate 153 to form a color image. The orthogonal dichroic prism 154' has a substantially square shape in plan view in which four right angles are bonded, and two dielectric multilayer films are formed at the interface between the right angles. The dielectric multilayer film ′ transmits the color light emitted from the liquid crystal panel 151G and transmitted through the emission-side polarizing plate 153, and is reflected by the liquid crystal panels 15 1R and 15 1B and transmitted through the respective color lights β of the emission-side polarizing plate 153. , color light is synthesized to form a color image. The projection lens 16 is composed of a group lens combining a plurality of lenses for amplifying and projecting the color image formed by the orthogonal color separation 稜鏡丨 54 to the screen Sc. FIG. 3A to FIG. 3D show the projector j in a schematic manner. The figure of the pose. The operating mechanism 20 is provided by a remote controller (not shown) or a projector! The button or the button is configured to recognize the input operation of the user to output the predetermined operation signal to the control device 4〇.

For example, the operating mechanism 20 recognizes an input operation of the user's "projecting image light from the projector 1 in a forward swing", that is, an operation signal corresponding to the input operation = is output to the control device 4A. The positive posture here means that the projection direction (Z^) in the figure is a posture from the projection lens as shown by the substantially horizontal direction 3A. Further, for example, the operation unit 20 recognizes the user's input operation of "projecting the image light by the projector 1", that is, the operation signal corresponding to the input is output to the control device 4A. The suspension posture herein refers to a rotation 180 from the positive swing posture (10) from the state of 15 1376565 centered on the X-axis (optical axis A >) or the z-axis as shown in Fig. 3B. Pose. Further, for example, the operation unit 20 recognizes that the user's input operation of "projecting the image light from the projector 1 in the upper projection position" is output to the control device 4 immediately after the operation signal corresponding to the input operation. The projection position above here refers to the rotation from the state of the forward swing posture (Fig. 3A) from the state of the forward swing posture (Fig. 3A) to the direction of the arrow Ri (five) as shown in Fig. 3C, so that the projection direction from the projection lens 16 (2) The axis) becomes the posture on the upper side.

Further, for example, the operation unit 20 recognizes the user's input operation of "the projection motion of the projector in the lower projection position from the projector", that is, the operation signal corresponding to the wheeling operation is output to the control device 4A. The lower projection position of X here is the rotation from the state of the positive swing posture (Fig. 3A) to the direction of the arrow R2 (Fig. 3a) as shown in Fig. 3D, so that the projection direction from the projection lens 16 (2 axes) ) becomes the posture on the lower side. Fig. 4 and Fig. 5 are diagrams showing the cooling structure of the light source lamp ηη of the i-th cooling device ship in a schematic manner. Specifically, Fig. 4 is a view showing a cooling structure when viewed from the light beam exit side, showing a cooling structure when viewed from the + γ axis direction. As shown in Fig. 2, the first cold portion f is provided corresponding to the first light source device 11A for blowing the wire to the light source lamp 111 1 constituting the i-th light source device for cooling. As shown in Fig. 2, the second cooling device 3 is provided corresponding to the second light source device 11A for blowing air to the configuration, and the source lamp mi is cooled. In addition, each of the cooling devices 30A, 30B has the same configuration, and only the first cooling device 30A will be described below with reference to 16 1376565. In addition, the second cooling device 3b is denoted by the same reference numeral, and the description is omitted. Here, before describing the configuration of the first cooling device 30A, the configuration of the globe 1114 will be described. Further, the respective shades 1114 constituting the respective light source devices UA, UB differ only in the shapes of the respective introduction ports 1114A, 1U4B and the rectifying plates 1114E, 1U4F which will be described later when viewed from the light beam exit side.

The position is set to the opposite. Only the lampshade 1114 of the second light source device UA will be described below. As shown in FIG. 4 or FIG. 5, the lampshade 1114 has a substantially rectangular parallelepiped shape in which the light source lamp iui and the main mirror 1112 are housed inside. The lamp cover m4 is disposed at both end faces in the Z-axis direction. As shown in Fig. 4 or Fig. 5, the inlet port 1Η4Α, 1114Β for introducing the outside air into the inside is formed on the side before the beam is emitted. As shown in Fig. 5, the pair of inlet ports 1U4A, 1U4b are formed at positions facing each other when viewed from the γ-axis direction. Further, as shown in Fig. 4, the pair of inlet ports 1U4A and (1) 4b are formed at the center positions η of the respective openings when viewed from the direction along the light A, and the positions in the wheel direction are mutually different.

'The right of the lampshade 1114 is orthogonal to the pair of inlets 1U4A, 1114B, and the end face is as shown in the circle 4 or FIG. 5, and is disposed on the side of the discharge beam to discharge the internal air to the external discharge port ni4c, (1) More specifically, in the introduction port on the + 2 axis direction side of the present embodiment, the length dimension L1 (Fig. 4) in the axial direction is set to w. Entrance 1114A, formed at the center of the open σ relative to the optical axis factory (S) 17 1376565 # + direction offset 1 () _ separation size l 〇] (Figure 4) amount of position. On the other hand, the introduction port 1114B on the -Z-axis direction side is set to have a length L2 (Fig. 4) in the γ-axis direction of 14 mm. Further, the introduction port (1) 4β is formed at a position where the position P2 is shifted from the optical axis A' in the -Y-axis direction by 1 〇 and the size (10) (Fig. 4) is separated. Further, in the inner periphery of each of the inlets (1) 4A and iu4B of the globe (1) 4, a rectifying plate 1U4E, ni4F is formed as shown in Fig. 5 . Such rectification

The plates 1114E, 1 U4F, and the inner circumference of the light beam side from the respective inlets (1) 4A, 1114B are formed to protrude from the inside of the material 1114 in an inclined state with respect to the side surface of the shade 1114 crossing the z-axis direction. Further, the rectifying plate 1114E is a unit that guides the air introduced into the lamp cover (1)* through the introduction 〇1U4A from the -Z-axis direction to the -X-axis direction at a predetermined angle: rectification. Further, the rectifying plate U14F rectifies the air introduced into the inside of the globe 1114 through the introduction port 1U4B from the +-axis direction to the χ舳- oblique direction. The X-axis direction is inclined at a predetermined angle. The first cold unit device 30 is shown in Fig. 1 and includes the i-th fan unit 31 and the second fan unit 32. The first fan device 31 is as shown in FIG. 1 and includes: The cooling fan 3 (1) and the first fan driver 312 that drives the first cooling fan 311 at a predetermined driving voltage under the control of the control device 40. =1 The cooling fan 311' is configured as a telecentric fan (multi-blade fan) for blowing in the direction of the tangential direction of the suction from the direction of the rotation axis of the fan. 2, Fig. 4 or Fig. 5, when the blown air outlet 3 is called Fig. 2, Fig. 2 is oriented toward the X-axis direction, it is disposed in the shade Μ**

18 1376565 « The z-axis direction side. Further, the inlet 1114 of the globe 1114 is connected to the outlet 3UA - by the conduit 3 1 1B. In other words, the air blown from the air outlet 311A of the first cooling fan 311 is introduced into the inside of the globe 1114 through the transmission duct 311B and the introduction port 1114A. The air that has been introduced into the inside of the globe 1114 is rectified by the rectifying plate 1U4E while flowing in the z-axis direction side, and is blown to the +-axis direction side of the light source lamp 11u. Then, the air blown to the light source lamp 1 111 flows through the mirror Φ of the main mirror u 12 , and is discharged to the outside of the globe 1114 through the respective discharge ports 1114C and 1114D of the lamp cover 1114. As shown in Fig. 1, the second fan unit 32 includes a second cooling fan 32 1 and a second fan driver 322 that drives the second cooling fan 321 with a predetermined driving voltage under the control of the control unit 4〇. The second cooling fan 321 is configured by a multi-blade fan. As shown in Fig. 2, Fig. 4 or Fig. 5, when the air outlet 321A is oriented in the direction of the yaw axis, it is disposed on one side of the yoke direction of the globe 1114. Further, the introduction of the shade cover 14 and the outlet 1321 are connected by a conduit 321 . In other words, the air blown from the air outlet 321 of the second cooling fan 321 is introduced into the inside of the globe 1U4 through the duct 321 and the inlet llUB. The air that has been introduced into the inside of the globe 1114 is rectified by the rectifying plate 1U4f and flows in the +z-axis direction side, and is blown to the γ-axis direction side of the light source lamp liu. Then, the air blown to the light source lamp 11u flows through the mirror of the main mirror 1112, and is discharged to the outside of the lamp cover m4 through the respective discharge ports 1114C, 1114D of the lamp cover 1114. As described above, the first cooling fan 3U sends the air supply side I376565 to the light source lamp 11U and the second cooling fan 321 to the light source lamp (1), and the air blowing direction W2' is shown along the optical axis a as shown in FIG. When the glaze A is viewed in the direction, it is set to be orthogonal to the optical axis A and opposite to each other. The respective blowing directions W W2 are set to be γ which are orthogonal to the respective blowing directions. The state in which the axial directions are shifted from each other. Fig. 6A to Fig. 6D schematically show the respective cooling directions 30A of the light source lamps (1) κ ^ in the air blowing direction W1'W2 when the image light is projected from the machine 1 in various postures. Specifically, 'ffl6A~Fig. 6〇

= The direction of the air supply when not viewed from the beam exit side, oh. Fig. 6A is a view corresponding to Fig. 3A showing a blowing direction Wi W2 when the image light is projected from the projector i in a forward swing posture. Also, Gang A κι - ~ Figure 3D corresponds to the figure. Figure 4 shows the relationship between the wind direction W1 and the wind direction W1 when the image is projected from the projector 1 and the image is set to the 摆 (X-axis) when the light is placed. direction). Rotate 180 to W1, W2. In the opposite direction (horizontal 'projecting image light from the projections in the upper projection position, 'wind direction Wl, W2 is set as follows. For medium == as shown in Fig. ,, set to the optical axis factory direction (Fig. It is called the rotation 1 position: the direction to the respective air blowing directions W1, W2 to the arrow ri, the square direction of the air supply direction W1 is set to the direction from the top to the bottom (the vertical side 2). The wind direction W2 is set to be from the bottom to the top. Direction (Dang 20 1376565) When the image light is projected from the projector 1 in the following projection position, each of the air blowing directions W1 and W2 is set as follows. Each of the air blowing directions W1 and W2 is set to the optical axis as shown in FIG. 6D. a - The direction in which the air blowing directions W1 and W2 are rotated in the direction of the arrow R2 (Fig. 6A) is 90. That is, the direction of the air blowing direction W1 is set from the lower side to the upper direction (vertical direction). The air blowing direction W2 is set to a direction from the top to the bottom (vertical direction). The control device 40 includes a CPU (Centra丨Pr〇cessing Unit) and the like, and controls the projector i according to a control program stored in a memory (not shown). Overall, in addition, the control device 40 The configuration mainly describes the functions of the respective cold unit devices 30A, 30B, and the other functions are omitted. The control device 40 is provided with a liquid crystal panel (4) control = 41, a fan drive control unit 42, and the like. The control unit 41 applies various image processing to the digital image data processed by the image information number, and the image processing is performed by the digital image processing and the image is processed by the image. The driving signal is rotated out to the liquid crystal panel 151 to form a right-handed m-heart image. The image processing is performed, and image size adjustment such as enlargement and reduction is performed.

Am. ^ ^ Processing, keystone correction, mass adjustment processing, and gamma correction processing.

The fan drive control unit 42 recognizes the posture of the projector i from the operation mechanism 2 by the 铨 A operation signal. The action of it. Further, the fan drive control unit 4; =: the operation of each cooling device 30A, _ is controlled by the following method.

21 (S 1376565 The structure of the cold unit 30 _ _ 6 is easy to explain, showing the arrow (10) of each air supply direction, the second: the arrow with a large amount of air supply is larger, and the arrow with less air supply is smaller. _42, #From the operating mechanism, when inputting the content of "Is the image light: =1 projected image light", the fan drive H 312, 322 outputs the corresponding indications, and will be from the first cooling fan map. 2 The wind purchase control is more than the air supply volume from the z-th fan 321. ^ Fan drive control, p42' When the operator 2 is input, input the content of "projecting image light from the projector ^" In operation, each of the fan drivers 312, 322 outputs a predetermined control command, and controls the air supply amount from the second cooling fan 321 to be larger than the air supply amount from the first cold portion fan 311. When the control unit 42' inputs an input operation of "projecting the image light from the projection image in the upper projection position" from the operation unit 20, P outputs a predetermined control command to each of the fan drivers 312, 322, and as shown in FIG. 'The air supply from the i-th cooling fan 3 i! More than the amount of air blown from the second cooling fan 321. = The fan drive control unit 42 inputs an input operation of the content of "projecting image light from the projector to the projector in the following direction" from the operation unit 2? The first fan driver 312 and the second fan driver 322 output a predetermined control so that 'the amount of air supplied from the second cooling fan 321 is controlled to be larger than the amount of air supplied from the Wth fan 3 ι as shown by 60. The fan drive control unit 42 controls the operation of the second cooling device 30A according to the posture of the projector i, 22 1376565, so that the amount of air blown from the cooling fan located above the two cooling fans 3H and 32i is increased. The amount of air blown from the cooling fan located on the lower side. For example, when the amount of air blown from the cooling fan located on the lower side is set to 〇, the air blown from the cooling fan located above and transmitted through the light source lamp (5) is heated. Will enter the cooling fan on the lower side, causing the cooling fan to deteriorate due to heat. Therefore, the fan drive control 胄42, preferably: control the two cooling fans 311, 321 to the driving state According to the first embodiment, the following effects are obtained. In the present embodiment, the first device 3A has an air blowing direction W1 to the light source lamp im, and W2 is set as described above. The cooling fan 311 and the second Cooling fan 321. - When the image light is projected from the projector 丨 in the upright posture and the hanging posture, the air is blown from the first cooling fan 3" and the second cooling fan 321 to the light source U" Therefore, the temperature difference between the upper side and the lower side of the light source lamp un can be moderated to efficiently cool the light source lamp 11U. Further, when the image light is projected from the projection (four) 1 in the upward projection position, that is, the 吏 blowing direction W2 is set. The pair of light source lamps i ii can also set the blowing direction W2 to the blowing direction of the light source lamp mi from the upper side toward the lower side in the blowing direction from the lower side toward the upper side. Even if the image light is projected from the projector 1 in the upper projection position by the &, the air can be blown downward from the i-th cooling fan 311 toward the light source lamp i(1), and the upper side of the light source I "" can be alleviated. The temperature difference on the lower side is effective to cool the light source lamp m and project the image light from the projector 以 in the τ square projection position. Similarly, the blowing direction W2 can be set to the light source lamp i(1) from the top to the bottom. The direction 'is therefore able to efficiently cool the light source lamp (1) so that it can efficiently cool the light source lamp 丨丨u in response to the situation in which the image light is projected from the projection 胄1 in various postures. Since the second cooling device 3〇B also includes the first cooling fan 311 and the second cooling fan 321′ which are the same as the first cooling device 3〇8, the light source lamp 1U1 can be efficiently cooled by the respective cooling devices 3GA and 3GB. . Here, the projector 1 rotates the projector by 9 turns centering on the optical axis A and the X-axis of the light beam emitted from the light source device main body i i i. , to set the postures such as the forward posture, the hanging posture, the upper projection posture, and the lower projection posture. ’ 'The respective air blowing directions wi, W2 are set to face each other when viewed from the direction along the optical axis 〆. In this case, the light source lamp 1111 can be blown from the upper side toward the lower side or in the horizontal direction by at least one of the i-th cooling fan (1) and the second cooling fan 321 . air. In this way, the image light can be efficiently cooled 1111 in accordance with the situation in which the image light is projected in the various postures described above. Further, the first cooling fan 311 and the second cooling fan 321 project the image material from the projection machine 1 in the forward posture and the (four) posture, and are set to the horizontal direction. With this configuration, at least one of the cooling fan 311 and the second cooling fan 321 can blow air from the upper side toward the lower side or in the horizontal direction. Each of the cold unit 3〇A, 3〇B has two 帛1 cooling fans (1) (S) 24 1376565 Handi z々邠Μ. 32丨. Thereby, a minimum number of cooling fans can be used, corresponding to the above various (4) * The position of the projected image light (4) * efficiently cools the two light source lamps 111 1, and does not hinder the miniaturization of the projector i. Further, each of the air blowing directions W1, W2 is set to be shifted from each other in the γ-axis direction. Thereby, when the two cooling fans 311, 321 are driven, the air from one cooling fan and the air from the other cooling fan do not interfere with each other. (4) 'The air that can be controlled to be blown out from the cooling fan does not enter. In addition, the blowing σ of the cooling fan is such that air can be blown well from the two cooling fans 3 11, 321 to more efficiently cool the light source lamp uii. Moreover, since it can be controlled to blow air from a cooling fan, that is, Light source light 1 The heated air enters the air outlet of the other cooling fan, so that the cooling fans 311, 321 can be prevented from being inferior in heat. Further, even if the two cooling fans 311, 321 are moved at any time, the cooling fans 311, 321 can With the lower temperature air for cooling the light source lamp 11 1 1 , and controlled to blow the air blown from a cooling fan, that is, the air heated by the light source lamp uu into the air outlet of the other cooling fan, thereby The projector 1 is provided with a fan drive control unit 42 that can control the operation of the cooling fan 311 and the second cooling fan 321 in accordance with the posture of the projector. Since the fan drive control unit 42 can control the operations of the fans 311 and 321 in accordance with the projector 丨 posture, the light source lamp 1丨1 i can be efficiently cooled in accordance with the case where the image light is projected in the above various postures. The portion 42 can control the cooling devices 30A, 30B according to the posture of the projector 丨 so that the air supply from the cooling fan of the upper side of the two cooling fans 311, 321 is more than 25 1376565; The air is blown from the cold P fan located on the lower side. This enables the upper side of the light source lamp to be efficiently cooled in response to the projection of the image light in the above various postures. In addition, in the above embodiment, The description is simplified. Although the posture of the projection 胄 1 has four postures of a positive posture, a hanging posture, an upper projection posture, and a lower projection posture, the projector 1 can be set to be rotatable about the optical axis A - 36. The various postures of the projections in all directions can exhibit the above-described effects even in the various postures described above. [Second Embodiment] Next, a second embodiment of the present invention will be described based on the drawings. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and the detailed description thereof will be omitted or simplified. Fig. 7 is a block diagram showing a schematic configuration of a projector 第 according to the second embodiment. Fig. 8 is a view showing a schematic configuration of the video projecting unit 1 according to the second embodiment. In the first embodiment, the projector i is configured by two lamps having two light source devices 11A and 11B. Further, the projector i has two cooling devices 30 Α, 30 Β β, and each of the air blowing directions wi, W2 is set to be orthogonal to the optical axis A and viewed from each other when viewed along the optical axis. The direction of the opposite direction. On the other hand, as shown in Fig. 7 or Fig. 8, the projector 本 of the present embodiment is configured to have only one light source device n. Further, as shown in Fig. 7, the projector has only one cooling device 3 corresponding to one lamp type. 26 CS) 1^/6565 Further, each of the air blowing directions W1, W2 is orthogonal to the direction from the pupil axis a to the optical axis A and orthogonal to each other when viewed in the direction of the line. The other configuration is the same as that of the first embodiment described above. In the actual shape, the image projection unit ι is a lamp type as shown in FIG. 8, and the flute in the column 121 described in the above-described first embodiment is omitted, and *^ 叼1 is returned to the first lens array first lens array. 121 and the light guide 120 are formed to have a substantially L shape in plan view.肜成• ® 9A to 9D are shown in a schematic manner in the various positions from the M M M 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实 实,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Specifically -

Similarly to Figs. 6A to 6D, the circle 9D is a view corresponding to the figure. Fig. 3 D The first cooling fan 311 of the two cooling fans 311, 321 is set as shown in Fig. 9D, and is set to the side of the light source lamp 1 (1) from the -Z axis direction side to the +Z axis direction side (arrow W1) Direction) blow air.又 又, the second cooling fan m, as shown in Figs. 9-8 to 9D, the air source lamp 1U1 is blown from the _γ axis direction and the W2 direction). * Direction side (front side - In addition, when image light is projected from the projector 1 in a normal swing position, each of the air blowing directions W1, W2 is set as follows. That is, the air blowing direction Wi is set as shown in FIG. In the hurricane direction W2, it is set in the direction from the bottom to the top (vertical direction) as shown in Fig. 9A. When the image light is projected from the projector i in the hanging posture, the system (S) 27 ^76565 In the same manner as the first embodiment described above, the optical axis A > is rotated from the optical axis A > to the normal swing posture. Therefore, as shown in Fig. 9B, the air blowing direction W1 is set to the air blowing direction with respect to the positive swing posture. W1 is the reverse direction (horizontal direction). The 'wind supply direction W2 is set to the direction from the top to the bottom (vertical direction) as shown in Fig. 9B. Further, when the image light is projected from the projector 1 in the upward projection position In the same manner as in the first embodiment, the vertical swing posture is rotated 90 in the direction of the arrow R1 (FIG. 9A) around the optical axis A. Therefore, as shown in FIG. 9C, the air blowing direction W1 is set to be from below to above. Direction (vertical direction) and 'air supply direction As shown in Fig. 9C, W2 is set in the horizontal direction. When the image is projected from the projector 1 in the following projection position, the optical axis A is centered on the optical axis A - in the same manner as in the first embodiment. In the direction of the arrow R2 (Fig. 9A), it is rotated by 90. Therefore, as shown in Fig. 9f, the air blowing direction W2 is set to a direction from the upper side to the lower side (vertical direction). Further, the air blowing direction W2 is set as shown in Fig. 9D. In the same manner as the above-described first embodiment, the second cooling fan 311 and the second cooling fan 321 and the light source lamp 1111 (light source device body 111) are respectively different from the above-described first embodiment. In the present embodiment, the fan drive control unit 42 can control the cooling device 30 at any time according to the posture of the projector i as shown in FIGS. 9A to 9D, similarly to the above-described first embodiment. The cooling fan located above the two cooling fans 3 321 311 311, 321 drives the amount of air supplied from the two cooling fans more than the amount of air supplied from the cooling fan located at the lower side. 28 1376565 The second embodiment Even if the air blowing directions W2 are set to be orthogonal to each other as described above, the same effects as those of the above-described first embodiment can be exhibited. * The present invention is not limited to the above-described embodiments, and the present invention can be achieved. The present invention is also included in the present invention. The configuration of the cooling device 3 () is not limited to the configuration described in the above embodiment.

That is to say, 'cooling device 3〇, 3〇A, 30B has two cooling fans 3 ιι, (3), but is not limited to this. ##, it is possible to have three or more cooling fans, and two cooling fans 311, 321 The blowing directions W1, w2 are set to 9Q by the S rectifying plates m4E and 1114F. The other angles intersect with the optical axis A 1 direction 'but are not limited thereto, and may be orthogonal to the optical axis A. Furthermore, the air blowing directions wi2, # of the two cooling fans 311, 321 are set to be orthogonal to the optical axis 观看 when viewed in the direction of the light_A', and are oriented opposite to each other or orthogonal to each other. However, it is not limited to this, as long as the direction of the person in different directions can also be in other directions. Further, the two cooling fans 311, 321 are not limited to the multi-blade fan, and the axial flow fan having the same suction direction and the blowing direction of the person and the air is configured as the month. In each of the embodiments, the fan drive control unit 42 is The gesture of the projector 1 is identified by inputting the operation signal of the identification 2 mechanism, and is rooted. The cooling device 3G is controlled to be thin and thin, but it is not limited thereto. For example, the tilting state detecting unit of the return sensor or the like for detecting the posture of the projector is provided in the projector i. Further, the fan drive control unit 42, 3) recognizes the projector by the operation signal from the tilt state detecting unit, and controls the cooling device 3 according to the identification result. In the above-described embodiments, the fan drive control unit 42 can control the cooling device 30 in a different manner from the above-described configuration, and the fan drive control unit 42 drives the first cooling fan. 311 Both of the cooling fans 321' are not limited thereto, and may be configured to drive only one of !31 and the second cooling air. In the form of the monthly 'J fans', the shadows are privately added to the source device ", 11Α, 11Β光光::::10, although it is composed of light: again: direction (Z axis) is orthogonal' However, it is not limited thereto, and for example, the optical axis V and the projection direction may be configured to be parallel. In the first embodiment, the π is set to the second embodiment, the air blowing direction W is set, and the air blowing direction is two. Further, the direction described in the second embodiment. 2 is set in the above-described first embodiment, and the three-plate type projection mechanism of the plate 151 is not limited to this, although the three-plate type projection mechanism having three liquid crystal surfaces and one liquid crystal panel is not limited thereto. A projector (s) 30 1376565 that can be equipped with two liquid crystal panels can be configured as follows: a configuration or a liquid crystal panel having four or more liquid crystal panels. In each of the above embodiments, a transmissive liquid crystal panel having a light incident surface different from a light exit surface is used, but a reflective liquid crystal panel having a light incident surface and a light exit surface may be used. In the above-described embodiments, the liquid crystal panel is used as the light modulation device, but a light modulation device β other than the liquid crystal such as a microlens element may be used. In this case, the light beam incident side and the light beam output side polarizing plate Η, L53 can be omitted. According to the present invention, since the light source lamp can be efficiently cooled in accordance with the case where the image light is projected in various postures, the projector used in the newsletter or the home theater can be utilized. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing a schematic configuration of a projector according to a first embodiment of the present invention. Fig. 2 is a view showing a schematic configuration of a video projection unit of the embodiment. Fig. 3A is a view schematically showing the posture of the projector of the above embodiment. Fig. 3B is a view schematically showing the posture of the projector of the above embodiment. Fig. 3C is a view schematically showing the posture of the projector of the above embodiment. Fig. 3D is a view schematically showing the posture of the projector of the above embodiment. 31 is a diagram showing the cooling structure of the light source lamp in a schematic manner. Fig. 5 is a view showing the structure of the light source lamp cold clock of the first cooling device of the embodiment in the schematic manner of ^ ^ .β ^ α. Fig. 6A shows the orientation of the various postures in the projection direction from the projection direction when the image is projected by the previous machine. 4 Apparatus for supplying air to the air of the light source lamp Fig. 6 is a view showing the various directions in the projection direction of the sixth embodiment in which the image is corrected by the machine. (1) Air supply to the air of the m device Fig. 6C is a view showing various postures in the ninth embodiment of the previous embodiment when the image light is projected from the projection direction. ♦ However, each of the air supply lamps of the light source lamp is shown in the first part of the previous month, and the various positions in the embodiment are projected from the projector to the first light of the image light. A diagram of the air supply directions of the air. <% Figure 7 shows the invention #. _ A block diagram showing the schematic configuration of the projector in the second embodiment. Fig. 8 is a view showing a schematic configuration of a video projection unit in a seventh embodiment. Fig. 9A is a diagram of the name of the element, ", &""""""" The diagram of the air supply direction of the air of the light source lamp by the command unit. The member shows the air blowing direction of the air of the light source lamp (S) 32 1376565 when the image light is projected from the projector in various postures in the foregoing embodiment. Figure. Fig. 9C is a diagram of ϋ - ▲ ', showing the air supply to the air of the light source lamp when the image light is projected from the projector in various postures in the above-described embodiment. four

The picture is displayed when the projector is projecting image light. The airflow direction of the air of the light source lamp is not reflected from the projection device in various postures in the above-described embodiment. [Main component symbol description] 1 Projector 10 Image projection unit 11 Α First light source device 11 Β Second light source device 12 illumination Optical device 13 Color separation optical device 14 Relay optical device 15 Optical device 16 Projection lens 20 Operating mechanism 30 Α First cooling device 30 Β Second cooling device 31 First fan device 32 Second fan device 40 Control device 33 (S) 1376565 41 Liquid crystal panel drive control unit 42 Fan drive control unit 50 Exterior housing 111 Light source device body 112 Light source driving unit 120 Light guide 121 First lens array 122 Second lens array

123 Polarization conversion element 124 Overlapping lens 131, 132 Dichroic mirror 141 Incident side lens 142, 144 Mirror 143 Relay lens 15 1 LCD panel

1 5 1R Red light side liquid crystal panel 151G Green light side liquid crystal panel 151B Blue light side liquid crystal panel 152 Incident side polarizing plate 153 Output side polarizing plate 154 Orthogonal color separation 稜鏡 311 1st cooling fan 31 ΙΑ, 321A blowing Exit 31 IB, 321B conduit 34 1376565

312 1st fan driver 321 2nd cooling fan 322 2nd fan driver 1111 Light source lamp 1111A Electrode 1112 Main mirror 1 113 Parallel lens 1114 Lampshade 1 1 14A, 1 114B Inlet 1 1 14C, 1 114D Discharge port 1114E, 1 114F rectifier board A optical axis SC screen

35

Claims (1)

1376565 February of the next year>曰Replacement page, patent application scope·· Placement of heart shadow, with Xiaoyuan light source and cooling The light source lamp is characterized by: The cooling device, I prepare for the fan and prepare for the 5 Haixian source The two cooling airs of the air blown by the air: the air supply directions of the air of the two cooling fans are set to the direction of mutual display, ... JS[*τκ a ^ t direction, along the light beam emitted from the light source lamp When viewed in the direction of the axis, the system is set to a direction orthogonal to the optical axis and opposite to each other, and is set to be shifted from each other in the direction orthogonal to the air blowing direction of the 盥啰a hai . 2 widely applicable to the projector of the first scope of the patent scope, wherein the air supply side is horizontally oriented. When the projector projects the image light, it is set to the projector of the i.S. or the second item of the patent range of the 3rd Shishen, and the fan county control which has the action of the two cooling fans _; The Γ control unit controls the actions of the two cooling fans depending on the posture of the projector. m 4. If the third control department of the application scope is based on the position of the projector, the air supply from the unit: the unit: the cold side of the upper side is more than that of the cooling fan from the second province. Air supply. ' 5. If you apply for the projector of the fourth paragraph of the profit-making range, the control department will make it clear to A. The fan drive does not have more air supply than the two cooling fans. 36 1376565 - • February 2011 Replacement Page XI. Schema: Next page 37