JP2006162651A - Color wheel apparatus and projector apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color wheel apparatus in which the weight of a balancer is reduced and the efficiency of mounting work of a balancer is secured. <P>SOLUTION: The balancer 25 is mounted on a position nearer to the color wheel 3 from the center-of-gravity position of a supporting body 11 which is the vicinity of the color wheel 3 on the outer peripheral part of the supporting body 11 fixed on the color wheel 3. Since the adhesion/fixing of the balancer 25 is not interrupted by a motor supporting body 35 or the like, the efficiency of mounting work of the balancer 25 can be secured, and since a distance between the balancer 25 and the color wheel 3 is shortened, the weight of the balancer 25 can be reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a color wheel device having a color wheel that is rotated by a motor and converts irradiated light into different color lights, and a projector device including the color wheel device.

  Conventionally, this type of projector device is converted by a light source, a color wheel device that cyclically converts light projected from the light source into a plurality of different predetermined color lights in a time-sharing manner, and the color wheel device. A light modulation unit that modulates each color light according to a predetermined video signal and a projection lens as a projection optical system that projects each color light modulated by the light modulation unit onto a screen are provided.

  Further, the color wheel device has a motor and a disk-shaped color wheel that is inserted in the rotational drive shaft of the motor and rotated in the circumferential direction by the motor. Color filters such as R), green (G), and blue (B) are provided adjacent to each other in the circumferential direction.

  There is also a color wheel device in which a hub is bonded to a color wheel and the hub is rotated by a motor.

  In the color wheel device, when the color wheel is rotated by a motor, each color filter cyclically converts the light emitted from the light source into each color light in a time division manner.

  However, in such a projector device, the rotational balance of the color wheel is shifted due to eccentricity of the rotational drive shaft of the motor, eccentricity of the rotational shaft of the color wheel, or application spots of the adhesive between the color wheel and the hub.

  In particular, in the projector device, since the color wheel rotates at a rotational speed close to 1000 rpm or a high speed exceeding the rotational speed, a slight eccentricity or the like greatly affects the rotational balance.

Therefore, in order to improve the rotation balance of the color wheel, a projector device is known in which a groove is provided at the rear edge of the hub and an appropriate amount of adhesive is applied in the groove (see, for example, Patent Document 1). .
JP 2003-337219 A (page 3-5, FIG. 8)

  For the color wheel, it is preferable to ensure the balance of rotation in the vicinity of the color wheel that needs to be balanced, from the viewpoint of reducing the amount of balancer applied.

  However, in the projector device described above, since the adhesive is applied to the rear end edge of the hub, the distance between the color wheel and the balancer is large, and the amount of adhesive required to balance the rotation of the color wheel is increased. Has the problem.

  Also, when using a so-called inner rotor type motor in which the rotor is located inside the stator, the housing that houses the rotor is located behind the rear edge of the hub, so that the adhesive application work This may hinder the work efficiency of the adhesive application.

  Furthermore, when using a so-called outer rotor type motor in which the rotor is located outside the stator, it is not easy to support the motor from the side surface of the motor, that is, from the side surface of the rotor. It is necessary to dispose a structure, and this structure may hinder the adhesive application work, which may cause a reduction in the work efficiency of the adhesive application.

  SUMMARY An advantage of some aspects of the invention is that it provides a color wheel device that reduces the weight of the balancer and ensures the efficiency of the work of attaching the balancer, and a projector device including the color wheel device.

  The color wheel device according to claim 1 is fixed to the motor, a color wheel that is rotated by the motor, and includes a plurality of color filters that respectively convert irradiated light into different color lights. A support body that rotates together with the color wheel, and a balancer that is attached to the outer periphery of the support body and in the vicinity of the color wheel.

  And by attaching the balancer in the vicinity of the color wheel at the outer periphery of the support fixed to the color wheel, the efficiency of the balancer installation work is secured and the distance between the balancer and the color wheel is reduced. Weight reduction is achieved.

  A color wheel device according to a second aspect is the color wheel device according to the first aspect, wherein the balancer is attached closer to the color wheel than the center of gravity of the support.

  By attaching the balancer closer to the color wheel than the center of gravity of the support, the distance between the balancer and the color wheel becomes closer, and the balancer can be reduced in weight more reliably.

  The color wheel device according to claim 3 is the color wheel device according to claim 1 or 2, wherein the balancer is an adhesive.

  By using the balancer as an adhesive, the amount of attachment of the balancer or the degree of freedom of the attachment position is improved.

  A color wheel device according to a fourth aspect is the color wheel device according to any one of the first to third aspects, wherein the color wheel device includes a groove portion that is provided in an outer peripheral portion of the support and in the vicinity of the color wheel and to which a balancer is attached. .

  Then, by providing the groove portion to which the balancer is attached in the outer peripheral portion of the support body and in the vicinity of the color wheel, positioning of the balancer is facilitated and the effect of the balancer is efficiently exhibited.

  The color wheel device according to claim 5 is the color wheel device according to claim 4, wherein the groove portion includes a surface portion facing the rotation center side of the support.

  And, by providing a surface portion facing the rotation center side of the support body in the groove portion, the balancer attached to the groove portion is supported by this surface portion, and it is reduced that the balancer is detached from the groove portion by centrifugal force when the support body rotates. Is done.

  A color wheel device according to a sixth aspect is the color wheel device according to any one of the first to fifth aspects, wherein the balancer is provided on the side on which the return light of the color light converted by the color wheel is irradiated to the color wheel. It is located on the opposite side.

  Then, by positioning the balancer on the opposite side of the color wheel from the side irradiated with the return light, the return light becomes difficult to be applied to the balancer, and the balancer is prevented from being peeled off or deteriorated.

  The color wheel device according to claim 7 is the color wheel device according to claim 6, wherein the color wheel device is provided around the support portion of the color wheel by the support and can mask the return light of the color light converted by the color wheel. Is provided.

  Then, by providing a mask means capable of blocking the return light around the support portion of the color wheel, the mask means prevents the return light from being applied to the balancer, and the balancer is more reliably peeled off or deteriorated. To be prevented.

  The projector device according to claim 8, wherein the light source and the color wheel device according to claim 1, which cyclically converts the light emitted from the light source into a plurality of different predetermined color lights in a time-sharing manner. And a light modulation means for modulating each color light converted by the color wheel device, and a projection optical system for projecting each color light modulated by the light modulation means onto a screen.

  And by attaching the balancer in the vicinity of the color wheel on the outer surface of the support that supports the color wheel of the color wheel device, the efficiency of the balancer installation work is ensured and the distance between the balancer and the color wheel is short Therefore, the weight of the balancer can be reduced, and the productivity can be improved and the overall weight can be reduced.

  According to the present invention, by attaching the balancer in the vicinity of the color wheel at the outer periphery of the support that supports the color wheel, it is possible to ensure the efficiency of the work of attaching the balancer, and the distance between the balancer and the color wheel is reduced. The weight of the balancer can be reduced.

  The configuration of the color wheel device according to the first embodiment of the present invention will be described below with reference to FIGS.

  In FIG. 3, reference numeral 1 denotes a projector apparatus. The projector apparatus 1 is a color wheel apparatus including a lamp 2 as a light source and a color wheel 3 that converts light emitted from the lamp 2 into each color light in a time-sharing manner. The color wheel unit 4, the illumination optical system 5 that uniformly guides the illuminance of each color light converted by the color wheel unit 4, and a display element as a light modulation unit that modulates the light guided by the illumination optical system 5, A DMD (Digital Micromirror Device (trade name)) 6 that is a display device, and a projection lens device 7 that is a lens barrel as a projection optical system that projects a light beam modulated by the DMD 6 onto a screen (not shown). ing. The projector apparatus 1 includes an illumination optical system 5 and a DMD 6 attached to a frame body (not shown) as a main body, and is mounted in an exterior housing 8 together with the lamp 2, the color wheel unit 4, the projection lens apparatus 7, and the like. Contained.

  In the following, along the optical axis O of the light beam traveling from the lamp 2 to the screen, the screen side is the front side, the lamp 2 side is the rear side, and the left-right direction from the rear side to the front side of the optical axis O is the left-right direction. explain.

  The lamp 2 is an incandescent bulb such as a halogen lamp or a discharge lamp such as a metal halide lamp.

  The color wheel 3 is of a transmissive type, for example, as shown in FIG. 2, for example, red (R), green (G), blue (B), and white (W) color filters 3r, 3g, 3b, 3w. Are formed in a disk shape that is formed in a fan shape and arranged in the circumferential direction, and is arranged along a direction substantially orthogonal to the optical axis O. The color filter 3w is a colorless and transparent filter that transmits the light from the lamp 2 as it is.

  As shown in FIG. 1, the color wheel unit 4 is configured so that the support 11 fixed to the color wheel 3 and the color filters 3r, 3g, 3b, 3w of the color wheel 3 sequentially strike the light beam of the lamp 2. And a motor 12 for rotating the support 11 together with the color wheel 3 at a predetermined speed. The motor 12 is disposed in the exterior housing 8 so as to be located on the rear side of the color wheel 3.

  The support 11 is a substantially cylindrical color wheel mounting body 15 attached to the color wheel 3, and a substantially cylindrical rotation which is provided integrally with the color wheel mounting body 15 and constitutes a part of the motor 12. And a rotor 16.

  The color wheel mounting body 15 includes a main body portion 21 formed in a substantially cylindrical shape, and a projecting insertion portion 22 that is coaxially projected from one end portion in the axial direction from the main body portion 21 toward the color wheel 3. And a projecting fitting portion 23 that is coaxially projected from the other end portion in the axial direction from the main body portion 21 toward the rotary rotor 16, and the main body portion 21, the projecting insertion portion 22, and the projecting fitting. A press-fitting hole 24 is formed along the central axis of the portion 23, and an appropriate amount of balancer 25 is attached at an appropriate position in the circumferential direction.

  The main body 21 is located on the side of the color wheel 3 irradiated with light from the lamp 2, that is, on the rear side in the optical axis direction of the color wheel 3 in the present embodiment.

  The protruding insertion portion 22 has an outer diameter smaller than that of the main body portion 21 and is inserted and fixed in a hole portion 27 formed in the center portion of the color wheel 3. For this reason, a seat portion 28 is formed on the outer peripheral surface of the protruding insertion portion 22 so that the inner peripheral edge portion of the hole portion 27 of the color wheel 3 is in contact with the front end surface, which is one end surface in the axial direction of the main body portion 21. The flange surface 29 is in contact with the rear side surface of the wheel 3.

  Further, the projecting fitting portion 23 has an outer diameter dimension smaller than that of the main body portion 21, and is inserted and fixed to one end side of the rotary rotor 16. For this reason, an abutment seat portion 31 with which the inner peripheral edge portion of the rotary rotor 16 abuts is formed on the outer peripheral surface of the projecting fitting portion 23, and the rear end surface which is the other end surface in the axial direction of the main body portion 21 is the rotary rotor. A contact flange surface 32 that contacts 16 front end surfaces is formed.

  Then, one end side in the axial direction of the rotating shaft 33 of the motor 12 is press-fitted and inserted into the press-fitting hole 24.

  In the present embodiment, the balancer 25 is an aluminum piece, a copper piece, or the like, and the outer periphery of the main body 21 in the vicinity of the color wheel 3, specifically, the balancer 25 is determined from the position of the center of gravity of the support 11. Also, near the front side in the front-rear direction of the support 11 near the color wheel 3, in the present embodiment, it is bonded and fixed adjacent to the rear side surface of the color wheel 3. That is, the balancer 25 is disposed on the rear surface, that is, the rear surface, which is the opposite side to the front surface side of the color wheel 3 to which the color light converted by the color wheel unit 4 is irradiated from the projection lens device 7 or the like.

  It should be noted that the mounting amount of the balancer 25 and the mounting position of the balancer in the circumferential direction on the main body 21 are a balance inspection device configured in the same manner as a general tire wheel balance inspection device (smaller than a tire balance inspection device). And the detection accuracy is high).

  On the other hand, the motor 12 is of a so-called outer rotor type, and is disposed in the rotary rotor 16 that is attached to the rotary shaft 33 and the rotary shaft 33 that is inserted in the rotary rotor 16, the rotary rotor 16 that is positioned at the outermost part. Coil 34 is provided.

  The rotary rotor 16 is formed in a cylindrical shape by, for example, metal or the like, and the projecting fitting portion 23 is fitted to one end portion in the axial direction, and the opening at the one end portion in the axial direction is closed. It is substantially flush with the outer peripheral surface of the main body 21 of the wheel mounting body 15. Further, a permanent magnet (not shown) is provided on the inner peripheral side of the rotary rotor 16 so as to face the outer peripheral surface of the coil 34, and rotates around the energized coil 34 together with the color wheel 3 and the color wheel attachment body 15. .

  Further, the rotary shaft 33 has one end in the axial direction press-fitted into the press-fit hole 24, and the other end in the axial direction is inserted through the rotary rotor 16 and the coil. A motor support 35 that can fix the color wheel unit 4 to the exterior housing 8 such as a frame body is provided on the other end side of the axial coil 34 of the rotating shaft 33, and the motor support 35. And a coil support 36 that supports the coil 34.

  The motor support 35 is for fixing the motor 12 to the exterior housing 8 side through, for example, a screw (not shown) and is opposed to the rear end portion of the rotary rotor 16 so as to face, for example, an attachment portion. A pair of projections 37 are provided in the radial direction, and screw insertion holes 38 into which screws are inserted are formed in the mounting portions 37. Further, an insertion hole 39 through which the coil support 36 is inserted is formed in the central portion of the motor support 35.

  The coil support 36 fixes the coil 34 to the motor support 35 and rotatably supports the rotary shaft 33. The coil support 36 includes a substantially cylindrical insertion portion 41 inserted through the insertion hole 39 and the insertion portion 41. And a shaft support portion 42 projecting radially from the other end portion of the portion 41 in the axial direction, and a shaft support hole 43 in which the rotation shaft 33 is rotatably supported is formed in the center portion.

  The insertion part 41 has one end in the axial direction in contact with the other end in the axial direction of the coil 34.

  The shaft support portion 42 abuts on the rear side surface of the motor support 35, integrally connects the coil support 36 to the motor support 35, and rotatably supports the rotary shaft 33.

  Furthermore, a plurality of lead wires (not shown) are drawn out from the coil 34, and these lead wires are integrally attached to the front end surface of the motor support 35 on the rotary rotor 16 side and connected to a power supply unit or the like. It is electrically connected to a flexible substrate (not shown).

  The illumination optical system 5 equalizes the illuminance of the light beams of each color light converted by the color wheel unit 4 and collects the condensed light beams with the illuminance uniformized by the lens units 45. Mirrors M1, M2 and the like that reflect to the DMD 6 are provided.

  The DMD 6 is a reflective element that modulates and reflects the light beam that has been made uniform by the illuminating optical system 5 and is focused according to the processed video signal. The video signal processing circuit processes the video signal. It is mounted on the electronic circuit. That is, the projector device 1 is a so-called reflection type.

  The projection lens device 7 includes a focus ring (not shown) for focus operation and a zoom ring for zoom operation, and is formed in a substantially cylindrical shape.

  Next, the operation of the first embodiment will be described.

  When assembling the color wheel unit 4, the rotary rotor 16 with the permanent magnet attached to the inner peripheral surface side and the color wheel attachment body 15 with the color wheel 3 attached are integrally fixed, and one end side of the rotary shaft 33 is fixed. After press-fitting into the press-fitting hole 24, the coil 34, the motor support 35 and the coil support 36 are attached to the other end of the rotary shaft 33, and the rotational balance is inspected by attaching to the balance inspection device via the attachment portion 37. The balancer 25 is bonded to a predetermined position by a predetermined amount according to the inspected rotational balance deviation amount and deviation position.

  The assembled color wheel unit 4 is fixed to the exterior casing 8 side by inserting screws into the screw insertion holes 38 and tightening the screws to the exterior casing 8 side.

  When the power is turned on, power is supplied to the color wheel unit 4 through the flexible substrate, the coil 34 is energized, and the color wheel 3 rotates with the support 11 at a substantially constant speed.

  Further, the light emitted from the lamp 2 is converted into red (R), green (G), blue (B), and white (W) color lights in a time division manner by the color filters 3r, 3g, 3b, and 3w of the color wheel 3. After being converted, the light of each color is made uniform by the lens unit 45, condensed, and reflected by the mirrors M1 and M2 to the DMD 6. Further, the color light incident on the DMD 6 is reflected according to the video signal processed by the video signal processing circuit or the like and reflected to the projection lens device 7, and the projection lens device 7 performs focus adjustment and zoom adjustment on the screen. Projected. At this time, each color light is synthesized as an afterimage by the viewer's vision, so that it is visualized as a color image.

  As described above, in the first embodiment, the color wheel is located near the color wheel 3 at the outer periphery of the support 11 fixed to the color wheel 3, specifically, the center of gravity of the support 11. The balancer 25 is attached to the third side.

  As a result, for example, the motor support 35 is hindered when the balancer 25 is bonded and fixed, compared to the conventional case where the balancer is bonded to the rear end of the rotary rotor, which is the rear end of the support. The balancer 25 can be mounted efficiently and the distance between the balancer 25 and the color wheel 3 can be reduced, so that the balancer 25 can be reduced in weight, and the productivity and weight reduction of the projector device 1 can be achieved. Is possible.

  Further, of the light reflected by the DMD 6, a part of the light that has not entered the projection lens device 7 is returned to the color wheel 3. Therefore, positioning the balancer 25 on the back side of the color wheel 3 makes it difficult for the return light to strike the balancer 25 and prevents the balancer 25 from becoming hot due to this return light. The deterioration of the agent can be prevented, and the balancer 25 can be prevented from peeling off.

  A means for providing a light-shielding plate on the front surface of the color wheel 3 so that the return light is not irradiated on the color wheel 3 side is also conceivable, but the light emitted from the lamp 2 is a predetermined color filter 3r, 3g, 3b, 3w. However, the return light is applied to the color wheel 3 from multiple directions because the direction of the light reflected by the DMD 6 is not fixed.

  Therefore, if the return light is to be shielded by the light shielding plate on the front surface of the color wheel 3, it is necessary to enlarge the light shielding plate so that the return light irradiated to the color wheel 3 from multiple directions is blocked by the light shielding. 3 may also shield the light irradiated to the mirrors M1 and M2.

  Therefore, by positioning the balancer 25 on the back side of the color wheel 3, it is possible to make it difficult for the return light to strike the balancer 25 without arranging a light shielding plate on the front side of the color wheel 3.

  In the first embodiment, as shown in FIG. 4, it is also possible to provide an adhesive 47 as a balancer instead of the balancer 25. Here, as the adhesive 47, for example, an ultraviolet curable resin or the like is used. In this case, the attachment amount of the adhesive 47 or the degree of freedom of the attachment position is improved.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 5, a groove 51 is provided on the outer peripheral portion of the color wheel mounting body 15, and an adhesive 47 is provided in the groove 51.

  Here, the groove 51 has a groove shape in a state in which the outer peripheral edge of the flange surface 29 of the color wheel attachment body 15 is cut out stepwise over the entire circumference and the color wheel 3 is attached to the color wheel attachment body 15. It is formed as follows. That is, the groove portion 51 has a bottom surface portion 51a located on the rotation center side, and both end portions are surrounded by the end surface portion 51b provided in the radial direction with respect to the bottom surface portion 51a and the rear side surface of the color wheel 3, It is located in the vicinity of the outer periphery of the support 11 and the color wheel 3.

  According to the present embodiment, by providing the groove portion 51 in the outer peripheral portion of the support 11 and in the vicinity of the color wheel 3, the adhesive 47 can be prevented from flowing out in the axial direction, and the application range of the adhesive 47 can be reduced. You can concentrate and show the effect of the balancer efficiently.

  In the second embodiment, as shown in FIG. 6, instead of the end face portion 51b, the groove portion 51 is opposed to the central axis side which is the rotation center side of the support 11, that is, the groove portion 51. It is also possible to provide a configuration in which the inclined surface portion 53 is provided so as to be shrunk in a radial direction that is a direction away from the central axis. In this case, it is possible to reduce the peeling of the adhesive 47 from the groove 51 due to the centrifugal force acting on the adhesive 47 when the adhesive 47 is supported by the surface portion 53 and the support 11 rotates.

  Here, the shape of the surface portion 53 is not limited to the shape shown in FIG. 6, but a configuration in which the surface portion 53 is provided near the center in the radial direction of the end surface portion 51b, as shown in FIG. 7, as shown in FIG. Thus, the configuration in which the surface portion 53 is provided on the outer peripheral portion in the radial direction of the end surface portion 51b, or the configuration in which the surface portion 53 protrudes from the end surface portion 51b so as to be parallel to the central axis as shown in FIG. The same operational effects as those of the second embodiment can be achieved.

  Next, a third embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 10, the groove portion 51 of the third embodiment is provided on the outer peripheral portion of the main body portion 21 at a position spaced rearward from the flange surface 29. Therefore, the front end portion of the main body portion 21 including the end surface portion 51c on the color wheel 3 side of the groove portion 51 is a mask portion 55 as a mask means.

  For this reason, the mask portion 55 is positioned on the outer peripheral edge portion of the flange surface 29 that serves as a support portion of the color wheel 3 by the support 11 and shields the return light from the projection lens device 7 and the like against the adhesive 47. .

  According to the present embodiment, the return light from the projection lens device 7 and the like can be reliably blocked by the mask unit 55, and the adhesive 47 can be reliably prevented from being peeled off or deteriorated.

  Further, since it is not necessary to attach another member or the like as a mask means around the support portion of the color wheel 3 by the support 11, it is possible to prevent an increase in manufacturing cost accompanying an increase in the number of parts.

  In the third embodiment, as shown in FIG. 11, instead of both end face portions 51b and 51c, there may be provided a configuration in which inclined surface portions 53 and 53 are provided so as to face the central axis side of the support 11, respectively. Is possible. In this case, the same operational effects as those of the embodiment shown in FIG. 2 can be obtained.

  Next, a fourth embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 12, in the second embodiment, the mask means is provided around the front side of the projecting insertion portion 22 serving as a support portion of the color wheel 3 by the support 11 on the front side surface of the color wheel 3. A mask plate 57 is provided.

  The mask plate 57 has an outer diameter dimension larger than the outer diameter dimension of the color wheel mounting body 15 of the support 11 and shields the return light from the projection lens device 7 and the like from the adhesive 47. . Further, an insertion fitting hole 58 through which the protruding insertion portion 22 is inserted is formed in the center portion of the mask plate 57. The mask plate 57 is attached to the color wheel mounting body 15 with the rear side abutting against the front side of the color wheel 3, and the front side is substantially flush with the front end of the protruding insertion portion 22. Yes.

  Thus, according to the present embodiment, it is possible to prevent the return light from being applied to the adhesive 47 by the mask plate 57, and it is possible to more reliably prevent the adhesive 47 from being peeled off or deteriorated.

  Further, the return light can be easily and reliably shielded from the adhesive 47 simply by attaching the mask plate 57 without processing the support 11 or the like.

  The mask plate 57 of the fourth embodiment can also be applied to the third embodiment. In this case, the mask plate 57 and the mask portion 55 can more reliably shield the return light from the adhesive 47.

  Next, a fifth embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The embodiment shown in FIG. 13 is provided with a rotating rotor 61 as a support instead of the support 11 of the embodiment shown in FIG.

  The rotary rotor 61 includes a substantially cylindrical rotor main body 62, and a front end portion of the rotor main body 62 protrudes in a radial direction, and a forward direction extends from the protrusion 63. An insertion projection 64 having a diameter smaller than that of the rotor main body 62 provided coaxially with the rotor main body 62 is provided, and the center of the projection 63 and the insertion projection 64 is the same as the press-fit hole 24. The shaft support hole 65 is formed. Further, in the outer peripheral portion of the rotor main body 62, as in the embodiment shown in FIG. 4, the rotary rotor near the color wheel 3, specifically, closer to the color wheel 3 than the position of the center of gravity of the rotary rotor 61. Attached to the front side of 61 in the front-rear direction and adjacent to the rear side of the color wheel 3.

  The protrusion 63 has a flange surface 66 similar to the flange surface 29 whose front end surface abuts on the color wheel 3.

  Similarly to the protruding insertion portion 22, the insertion protruding portion 64 is inserted and fitted into the hole 27 of the color wheel 3, and the outer peripheral surface is a seat portion 67 similar to the seat portion 28.

  Also in this embodiment, it is possible to achieve the same effects as the embodiment shown in FIG.

  Further, since the color wheel attachment body 15 or the like is not necessary, it is possible to improve manufacturability and to prevent an increase in manufacturing cost accompanying an increase in the number of parts.

  In the fifth embodiment, as shown in FIG. 14, the configuration of the second embodiment is applied, and the outer peripheral edge portion of the flange surface 66 of the rotary rotor 61 is cut out in a step shape. Even if the groove 51 is formed between the outer peripheral surface of the rotor body 62 and the rear side surface of the color wheel 3, the same effects can be obtained.

  Further, as shown in FIG. 15, even when the groove portion 51 is formed at a position spaced rearward from the flange surface 66 of the outer peripheral portion of the rotary rotor 61 by applying the configuration of the third embodiment, the same It is possible to achieve an effect.

  Furthermore, the structure which applies the mask board 57 of the said 4th Embodiment is also possible.

  In the embodiment shown in FIG. 5 to the embodiment shown in FIG. 15, the balancer 25 may be attached to the groove 51 in place of the adhesive 47. In this case, the balancer 25 is easily positioned in the optical axis direction by the groove 51.

  Next, a sixth embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 16, the motor 12 is of a so-called inner rotor type in the first embodiment.

  That is, the motor 12 includes a casing 71 that can fix the color wheel unit 4 to the exterior casing 8 side. The casing 71 accommodates the coil 34 therein, and is provided with a permanent magnet (not shown) on the inner peripheral side facing the outer peripheral portion of the coil. Further, a shaft support insertion hole 72 that rotatably supports the rotary shaft 33 is formed in the casing 71 at the center of both ends.

  Further, a color wheel mounting body 74 as a support is fixed to the color wheel 3 instead of the support 11. The color wheel mounting body 74 includes a substantially cylindrical mounting body main body 75, and a mounting fitting portion 76 that is inserted into and fitted into the hole 27 of the color wheel 3 is fitted to the front end portion of the mounting body main body 75. A press-fitting hole 77 into which the rotary shaft 33 is press-fitted is formed in the center of the attachment body main body 75 and the attachment fitting portion 76 so as to project forward coaxially.

  As a result, the front end surface of the attachment body 75 is a flange surface 78 similar to the flange surface 29 that contacts the color wheel 3, and the outer peripheral surface of the attachment fitting portion 76 is the same seat as the seat 28. 79.

  Further, similarly to the support 11 of the first embodiment, the vicinity of the color wheel 3 on the outer peripheral portion of the mounting body main body 75, specifically, the position closer to the color wheel 3 than the center of gravity of the color wheel mounting body 74. A balancer 25 is bonded and fixed adjacent to the rear side surface of the color wheel 3 on the front side in the front-rear direction of the color wheel mounting body 74.

  In the present embodiment, the casing 71 is fixed to the exterior casing 8 side, and the color wheel 3 rotates together with the coil 34 and the color wheel mounting body 74, and the same effect as the first embodiment. It becomes possible to play.

  In the sixth embodiment, a configuration in which the second embodiment, the third embodiment, or the fourth embodiment is applied is also possible.

  In each of the above embodiments, the color wheel 3 is a transmissive type, but a reflective color wheel 3 may be used. In this case, it can be easily handled by changing the arrangement of the lamp 2, the illumination optical system 5, the DMD 6, and the projection lens device 7, respectively.

  Furthermore, the size and arrangement of the color filters 3r, 3g, 3b, 3w used in the color wheel 3 can be set as appropriate.

  The projector device 1 is not limited to the reflective type using the DMD 6, but can also be an LCOS (Liquid Crystal on Silicon) type display element, and can also be applied to a transmission type liquid crystal display element. Is possible.

It is a longitudinal cross-sectional view which shows the color wheel apparatus of the 1st Embodiment of this invention. It is a front view which shows a color wheel apparatus same as the above. It is explanatory drawing which shows the projector apparatus provided with the color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows other embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows the color wheel apparatus of the 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which shows a part of other embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows a part of further another embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows a part of further another embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows a part of further another embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows the color wheel apparatus of the 3rd Embodiment of this invention. It is a longitudinal cross-sectional view which shows other embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows the color wheel apparatus of the 4th Embodiment of this invention. It is a longitudinal cross-sectional view which shows the color wheel apparatus of the 5th Embodiment of this invention. It is a longitudinal cross-sectional view which shows other embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows further another embodiment of a color wheel apparatus same as the above. It is a longitudinal cross-sectional view which shows the color wheel apparatus of the 6th Embodiment of this invention.

Explanation of symbols

1 Projector device 2 Lamp as light source 3 Color wheel
3r, 3g, 3b, 3w Color filter 4 Color wheel unit as color wheel device 6 DMD as light modulation means
7 Projection lens device as projection optical system
11 Support
12 Motor
25 Balancer
47 Adhesives as balancers
51 Groove
53 Face
55 Mask part as mask means
57 Mask plate as a mask means
61 Rotating rotor as support
74 Color wheel mounting body as support

Claims (8)

A motor,
A color wheel provided with a plurality of color filters which are rotated by the motor and convert the irradiated light into different color lights, and
A support fixed to the color wheel and rotating together with the color wheel;
A color wheel device comprising: a balancer attached to an outer peripheral portion of the support and in the vicinity of the color wheel. The color wheel device according to claim 1, wherein the balancer is attached closer to the color wheel than the center of gravity of the support. The color wheel device according to claim 1, wherein the balancer is an adhesive. The color wheel device according to any one of claims 1 to 3, further comprising a groove portion provided in an outer peripheral portion of the support and in the vicinity of the color wheel, to which a balancer is attached. The color wheel device according to claim 4, wherein the groove portion includes a surface portion facing the rotation center side of the support. The color wheel device according to any one of claims 1 to 5, wherein the balancer is located on the opposite side of the color wheel to the side irradiated with the return light of the color light converted by the color wheel. . The color wheel device according to claim 6, further comprising a mask means provided around a support portion of the color wheel by the support and capable of blocking the return light of the color light converted by the color wheel. A light source;
The color wheel device according to any one of claims 1 to 7, wherein the light emitted from the light source is cyclically converted into a plurality of different predetermined color lights in a time-sharing manner,
Light modulating means for modulating each color light converted by the color wheel device;
A projector apparatus comprising: a projection optical system that projects each color light modulated by the light modulation means onto a screen.

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