JP4891443B1 - Image display device - Google Patents

Abstract

To prevent problems such as damage to optical components inside an apparatus due to an operation of a user unfamiliar with handling.
A first rack 101 and a first rack are engaged with a first rack 101 as an advancing / retracting mechanism for moving a movable body 12 provided in and out of a housing 11 between a storage position and a use position. And a driving member 103 that rotates the optical engine unit as a rotating mechanism that rotates the optical engine unit 13 between the initial position and the projection position. When the movable body reaches the vicinity of the use position, a second rack 104 is provided, and a second gear 105 that meshes with the first rack and is driven by the motor in conjunction with the first gear is provided. The driving member is moved to a position where the second rack is engaged with the second gear while being guided by the groove 117.
[Selection] Figure 8

Description

The present invention relates to an image display apparatus in which the movable body having an optical engine unit is provided to be out with respect to the housing for projecting the screen onto the screen.

  2. Description of the Related Art In recent years, a technique that uses a semiconductor laser as a light source of a projection-type image display device that projects a screen on a screen has attracted attention. This semiconductor laser has better color reproducibility, instantaneous lighting, longer life, and higher power consumption compared to mercury lamps that have been widely used in image display devices. There are various advantages such as the ability to reduce the size and the ease of miniaturization.

  The advantage of such an image display device using a semiconductor laser is convenient when it is built in a portable electronic device. For example, a technique for incorporating an image display device using a semiconductor laser into a mobile phone terminal is known. (See Patent Document 1). When the image display device is built in the portable electronic device in this way, the screen can be enlarged and displayed on the screen as needed, so that convenience can be improved.

JP 2007-316393 A

  Now, when the image display device is built in a portable electronic device, it is possible to enhance the convenience by providing it so that it can be taken in and out of the housing of the electronic device and pulled out from the housing of the electronic device when in use. On the other hand, since it is necessary to reduce the size of the apparatus, there is a limit to increasing the strength of the housing. For this reason, if the user moves the image display device in and out manually, the user moves the movable part of the image display device by hand and pulls it out or pushes it in. By performing the push-pull operation, there is a risk that problems such as damage to the internal optical components may occur.

The present invention has been devised to solve such problems of the prior art, and its main purpose is that, for example, an optical component inside the apparatus is damaged by a user operation unfamiliar with handling. An object of the present invention is to provide an image display device configured so as not to cause a problem.

An image display apparatus according to the present invention is an image display apparatus having a housing and a movable body that is detachable from the housing, and the image display device is a main body of a portable information processing device. The movable body is a laser light source device that emits laser light of each color, and light modulation that modulates the laser light emitted from the laser light source device based on a video signal A projection unit including at least the projection optical system that includes the optical engine unit, and a projection optical system that projects an image of the modulated laser beam formed by the light modulation element on a screen. , the projection unit is composed of a support unit for supporting rotatably in the vertical direction via the hinge portion, it proceeds to advance and retreat between a storage position and use position of the movable body A mechanism, a rotating mechanism for rotating between a projection position of the projection unit as an initial position, a structure having a motor for driving said reciprocating mechanism and the pivoting mechanism.

According to the present invention, since the movable body is automatically advanced and retracted between the storage position and the use position, it is necessary for the user to perform an operation of gripping the movable body by hand and pulling out or pushing it in and out of the movable body. In addition, since the projection unit is automatically rotated between the initial position and the projection position, there is no need for the user to hold the projection unit by hand and rotate the projection unit. It is possible to avoid damage to the optical components inside the apparatus by a simple user operation, and the convenience of the portable information processing apparatus can be improved.

The perspective view which shows the example which incorporated the image display apparatus 1 by this invention in the portable information processing apparatus 2 Schematic configuration diagram of an optical engine unit 21 built in the optical engine unit 13 The block diagram which shows schematic structure of the image display apparatus 1 The perspective view which shows the image display apparatus 1 Plan view of the image display device 1 Bottom view of image display device 1 Plan view showing the main part of the auto loading and tilt mechanism in detail Plan view showing the main part of the auto loading and tilt mechanism in detail Plan view showing the main part of the auto loading and tilt mechanism in detail A perspective view showing the main part of the auto loading and tilt mechanism in detail.

A first invention made to solve the above-described problems is an image display device having a housing and a movable body provided so as to be able to be taken in and out of the housing. The movable body is housed in a drive bay formed in the main body of the portable information processing device, and the movable body is a laser light source device that emits laser light of each color, and the laser light emitted from the laser light source device is a video signal. The projection optical system comprising: an optical engine unit having a light modulation element that modulates based on the above, and a projection optical system that projects an image of a modulated laser beam formed by the light modulation element onto a screen. at least comprising a projection unit and the projection unit is composed of a support unit for supporting rotatably in the vertical direction via the hinge portion, and the use position retracted position said movable member A structure having a motor for driving the rotating mechanism for rotating, the advancing and retracting mechanism and the rotation mechanism between the advance and retreat mechanism for advancing and retracting, the projection position the projection unit an initial position between the .

According to this, since the movable body is automatically advanced and retracted between the storage position and the use position, there is no need for the user to hold the movable body by hand and pull out or push it in to move the movable body in and out. In addition, since the projection unit is automatically rotated between the initial position and the projection position, there is no need for the user to hold the projection unit by hand and to perform the operation of rotating the projection unit. It is possible to avoid damage to the optical components inside the apparatus by this operation, and the convenience of the portable information processing apparatus can be improved.

In a second aspect based on the first aspect , the rotation mechanism rotates the projection unit by moving in a second direction perpendicular to the first direction which is the advancing / retreating direction of the movable body. When the movable body moves in the first direction from the retracted position and reaches the position where the optical engine part is completely removed from the housing , the driving force of the motor is applied to the driving member. It is transmitted to a configuration in which the drive member is to move in the second direction.

  According to this, since the driving member performs the operation of rotating the projection unit only in a state where the projection unit is removed from the casing, it is possible to avoid the projection unit from interfering with the casing.

The third invention according to the second invention, the advancing and retracting mechanism includes a first rack provided on the casing side so as to extend in the first direction, meshing with the first rack, and a first gear driven by the motor, the rotation mechanism includes a second rack provided on said drive member meshes with the second rack, in conjunction with the first gear by the motor A second gear to be driven, wherein the driving member includes an engaging portion that engages with a guide groove provided on the housing side, and the movable body moves in the first direction from a storage position. Until the optical engine portion of the movable body reaches a position where it is completely pulled out of the housing , the drive member is positioned at a position where the second rack is not meshed with the second gear until it is regulated by the guide groove. There is maintained, the light of the movable body When the engine unit has reached a position escaped completely from the housing, a structure in which the is guided by the guide groove second rack is as the drive member is moved to a position meshing with the second gear.

  According to this, the moving operation of the movable body and the rotating operation of the projection unit can be performed smoothly. Further, the drive member can be configured to perform an operation of rotating the projection unit only in a state where the projection unit is pulled out of the casing so that the projection unit does not interfere with the casing.

The fourth invention, in the second or third invention, the drive member, the drive member in response to movement in the second direction, the engaging portion provided in the projection unit It is set as the structure provided with the cam part which raises / lowers.

  According to this, the projection unit can be smoothly rotated around the hinge portion by raising and lowering the engaging portion of the projection unit.

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

  FIG. 1 is a perspective view showing an example in which an image display device 1 according to the present invention is built in a portable information processing device 2. The portable information processing device 2 includes a main body 3 in which a control board (not shown) on which a CPU, a memory, and the like are mounted, and a display unit 4 including a liquid crystal panel. The display unit 4 is connected to the hinge unit 5 so that portability is enhanced by folding the main body unit 3 and the display unit 4.

  A keyboard 6 and a touch pad 7 are provided on the upper surface 8 a of the housing 8 of the main body 3. Also, on the back side of the keyboard 6 in the housing 8 of the main body 3, peripheral devices such as an optical disk device (one that records and reproduces information on an optical disk such as a Blu-ray disc, DVD and CD) can be replaced. A storage space, so-called drive bay, is formed, and the image display device 1 is attached to the drive bay.

  The image display device 1 includes a housing 11 and a movable body 12 provided so as to be able to be taken in and out of the housing 11. The movable body 12 accommodates an optical engine unit (projection unit) 13 in which optical components for projecting the screen 16 onto the screen 15 are accommodated, and a substrate for controlling the optical components in the optical engine unit 13. And a control unit (support unit) 14.

  FIG. 2 is a schematic configuration diagram of the optical engine unit 21 built in the optical engine unit 13. The optical engine unit 21 includes a green laser light source device 22 that outputs green laser light, a red laser light source device 23 that outputs red laser light, a blue laser light source device 24 that outputs blue laser light, and a video signal. The liquid crystal reflection type light modulation element 25 that modulates the laser light from each of the laser light source devices 22 to 24, and the laser light from each of the laser light source devices 22 to 24 is reflected and irradiated to the light modulation element 25. A polarization beam splitter 26 that transmits the modulated laser light emitted from the modulation element 25, a relay optical system 27 that guides the laser light emitted from each of the laser light source devices 22 to 24 to the polarization beam splitter 26, and the polarization beam splitter 26 are provided. And a projection optical system 28 that projects the transmitted modulated laser light onto a screen.

  The optical engine unit 21 displays a color image by a so-called field sequential method. Laser beams of each color are sequentially output from the laser light source devices 22 to 24 in a time-sharing manner, and an image by the laser beam of each color is visually displayed. It is recognized as a color image by the afterimage effect.

  The relay optical system 27 includes collimator lenses 31 to 33 that convert the laser beams of the respective colors emitted from the laser light source devices 22 to 24 into parallel beams, and the laser beams of the respective colors that have passed through the collimator lenses 31 to 33 in a predetermined direction. First and second dichroic mirrors 34 and 35 guided to, a diffusion plate 36 for diffusing the laser light guided by the dichroic mirrors 34 and 35, and a field lens for converting the laser light that has passed through the diffusion plate 36 into a convergent laser 37.

  If the side from which the laser light is emitted from the projection optical system 28 toward the screen is the front side, the blue laser light is emitted backward from the blue laser light source device 24, and the green laser is emitted with respect to the optical axis of the blue laser light. The green laser light and the red laser light are emitted from the green laser light source device 22 and the red laser light source device 23 so that the optical axis of the light and the optical axis of the red laser light are orthogonal to each other. And the green laser light are guided to the same optical path by the two dichroic mirrors 34 and 35. That is, the blue laser light and the green laser light are guided to the same optical path by the first dichroic mirror 34, and the blue laser light, the green laser light, and the red laser light are guided to the same optical path by the second dichroic mirror 35.

  The first and second dichroic mirrors 34 and 35 are formed with films for transmitting and reflecting laser light of a predetermined wavelength on the surface, and the first dichroic mirror 34 transmits blue laser light. And reflects the green laser light. The second dichroic mirror 35 transmits red laser light and reflects blue laser light and green laser light.

  Each of these optical members is supported by the housing 41. The housing 41 functions as a radiator that dissipates heat generated by the laser light source devices 22 to 24, and is formed of a material having high thermal conductivity such as aluminum or copper.

  The green laser light source device 22 is attached to an attachment portion 42 formed on the housing 41 in a state of protruding toward the side. The attachment portion 42 is provided in a state of protruding in a direction perpendicular to the side wall portion 44 from a corner portion where the front wall portion 43 and the side wall portion 44 that are respectively positioned in front and side of the accommodation space of the relay optical system 27 intersect. ing. The red laser light source device 23 is attached to the outer surface side of the side wall 44 while being held by the holder 45. The blue laser light source device 24 is attached to the outer surface side of the front wall portion 43 while being held by the holder 46.

  The red laser light source device 23 and the blue laser light source device 24 are configured by a so-called CAN package, and the optical axis is positioned on the central axis of the can-shaped exterior portion with the laser chip that outputs the laser light supported by the stem. The laser beam is emitted from a glass window provided in the opening of the exterior part. The red laser light source device 23 and the blue laser light source device 24 are fixed to the holders 45 and 46 by, for example, press-fitting into the mounting holes 47 and 48 formed in the holders 45 and 46. The heat generated by the laser chips of the blue laser light source device 24 and the red laser light source device 23 is transmitted to the housing 41 through the holders 45 and 46 to be dissipated, and each of the holders 45 and 46 has a thermal conductivity such as aluminum or copper. It is made of a high material.

  The green laser light source device 22 includes a semiconductor laser 51 that outputs excitation laser light, a FAC (Fast-Axis Collimator) lens 52 that is a condensing lens that condenses the excitation laser light output from the semiconductor laser 51, and a rod. A lens 53, a solid-state laser element 54 that outputs a basic laser beam (infrared laser beam) when excited by an excitation laser beam, and converts a wavelength of the basic laser beam to output a half-wavelength laser beam (green laser beam) A wavelength conversion element 55, a concave mirror 56 that forms a resonator together with the solid-state laser element 54, a glass cover 57 that prevents leakage of excitation laser light and fundamental wavelength laser light, and a base 58 that supports each part, And a cover body 59 that covers each part.

  The green laser light source device 22 is fixed by attaching the base 58 to the mounting portion 42 of the housing 41, and a required width (for example, 0.5 mm) between the green laser light source device 22 and the side wall portion 44 of the housing 41. The following gaps are formed. This makes it difficult for the heat of the green laser light source device 22 to be transmitted to the red laser light source device 23, suppresses the temperature rise of the red laser light source device 23, and allows the red laser light source device 23 with poor temperature characteristics to operate stably. Can do. Further, in order to secure a required optical axis adjustment allowance (for example, about 0.3 mm) of the red laser light source device 23, a required width (for example, 0.3 mm or more) is provided between the green laser light source device 22 and the red laser light source device 23. ) Is provided.

  FIG. 3 is a block diagram illustrating a schematic configuration of the image display apparatus 1. The control unit 61 of the image display apparatus 1 controls the light modulation element 25 based on the laser light source control unit 62 that controls the laser light source devices 22 to 24 of the respective colors and the video signal input from the portable information processing device 2. A light modulation element control unit 63, a power supply unit 64 that supplies power supplied from the portable information processing device 2 to the laser light source control unit 62 and the light modulation element control unit 63, and a main control unit that comprehensively controls each unit 65. The control unit 61 is provided in the control unit 14.

  The control unit 14 is provided with a motor 66 constituting an auto loading and tilt mechanism, which will be described in detail later, and a motor drive circuit 67 for driving the motor 66. An operation switch 68 for operating the auto loading and tilt mechanism is provided on the front panel 69 covering the front side of the housing 11 (see FIG. 1), and an output signal of the operation switch 68 is sent to the main control unit 65. The motor 66 operates in response to the operation of the operation switch 68.

  In order to transmit a video signal from the power supply line for supplying power from the portable information processing device 2 and the portable information processing device 2 to the casing 11 of the image display device 1 (see also FIG. 4). The interface unit 71 to which the signal line is connected is provided, and the interface unit 71 and the control unit 14 are connected by the wiring cable 72. The wiring cable 72 is flexible and bends and deforms so as to follow the control unit 14 when the movable body 12 is taken in and out of the housing 11.

  The control unit 14 and the optical engine unit 13 are connected by a wiring cable 73. The wiring cable 73 includes a signal line for transmitting and receiving a signal between each unit in the control unit 81 and each unit in the optical engine unit 21 and a power supply line that supplies power to a cooling fan or the like. The wiring cable 73 is also flexible, and when the optical engine unit 13 is rotated with respect to the control unit 14, the wiring cable 73 is bent and deformed as the optical engine unit 13 is rotated.

  Although the control unit 81 is provided in the control unit 14 here, a part of the control unit 81, for example, the power supply unit 84 may be provided on the housing 11 side together with the interface unit 71.

  FIG. 4 is a perspective view showing the image display device 1. FIG. 4A shows a storage state in which the movable body 12 is stored in the housing 11, and FIG. 4B shows the movable body 12 in the housing. 11 shows the state of use drawn from 11 respectively.

  Each housing of the optical engine unit 13 and the control unit 14 constituting the movable body 12 has a flat box shape with a short dimension in the height direction. Guide rails 81 that support both side edges of each case of the control unit 14 are provided in the case 11, and the control unit 14 slides along the guide rails 81, and is indicated by an arrow A. As described above, the movable body 12 can be moved back and forth between the storage position stored in the housing 11 and the use position that has been removed from the housing 11.

  The casing 82 of the control unit 14 includes a casing portion 82a adjacent to the optical engine unit 13 in the width direction, and a casing portion 82b adjacent to the optical engine unit 13 on the rear side in the front-rear direction. The housing portion 82 a of the control unit 14 and the optical engine unit 13 are connected to each other via a hinge portion 83. The rotation axis of the hinge part 83 is disposed in the front-rear direction, that is, in the direction in which the movable body 12 is put in and out.

  An exit window 84 is provided at the end of the optical engine unit 13 on the side opposite to the hinge portion 83, and laser light that has passed through the projection optical system 28 (see FIG. 2) of the optical engine unit 21 from the exit window 84. Is emitted.

  In the use state shown in FIG. 4B, the control unit 14 is supported by the guide rail 81 of the housing 11, while the optical engine unit 13 is completely removed from the housing 11, and as shown by the arrow B, The engine unit 13 can be rotated in the vertical direction between the initial position parallel to the control unit 14 and the projection position with the emission window 84 directed obliquely upward, with the hinge portion 83 as the center.

  As shown in FIG. 1, the storage space of the image display device 1 is open on the side surface of the casing 8 of the portable information processing device 2, and the side surface of the casing 8 of the portable information processing device 2 is open. The movable body 12 is taken in and out in a substantially orthogonal direction. The casing 11 of the image display device 1 is accommodated in the casing 8 of the portable information processing device 2, and in use, a part of the optical engine unit 13 and the control unit 14 is included in the casing 8 of the portable information processing device 2. It will be in the state which protruded to the side. The portable information processing device 2 is arranged so that the back surface thereof faces the screen 15, and thereby the emission window 84 provided in the optical engine unit 13 can be opposed to the screen 15.

  Next, the auto loading & tilt mechanism of the image display apparatus 1 will be described. FIG. 5 is a plan view of the image display device 1. FIG. 6 is a bottom view of the image display device 1. 7, FIG. 8, and FIG. 9 are plan views showing in detail the main parts of the auto loading & tilt mechanism, and show the transition state of the auto loading & tilt mechanism in stages. FIG. 10 is a perspective view showing in detail a main part of the auto loading & tilt mechanism. 5 and 10 show components provided inside the housing 11 and the control unit 14 as seen through.

  The image display device 1 is configured to automatically advance a movable body 12 including a control unit 14 and an optical engine unit 13 from a storage position stored in the housing 11 to a use position that has come out of the housing 11. And auto-loading and tilting that automatically rotates the optical engine unit 13 from an initial position parallel to the control unit 14 to a projection position inclined at a predetermined projection angle (for example, 20 degrees). It has a mechanism.

  As shown in FIG. 7, the auto loading and tilt mechanism includes a motor 66, a first rack 101 extending in a first direction for moving the movable body 12 in and out of the housing 11, and the first rack 101. A second gear meshing with a second rack 104 integrally provided with the driving member 103, a driving member 103 movably provided in a second direction orthogonal to the first direction, and a second rack 104 integrally provided with the driving member 103. And a gear 105.

  As shown in FIG. 5, the first rack 101 is provided along the guide rail 81 on the housing 11 side. The first gear 102, the drive member 103, and the second gear 105, together with the motor 66, are provided in a housing portion 82 b adjacent to the optical engine unit 13 on the rear side in the front-rear direction with respect to the optical engine unit 13. ing.

  As shown in FIG. 7, the first rack 101 and the first gear 102 constitute an advance / retreat mechanism for advancing and retracting the movable body 12 between the storage position and the use position, and are provided on the output shaft of the motor 66. When the worm gear 107 is engaged with the first gear 102, the first gear 102 is rotationally driven by the motor 66, and the movable body 12 advances and retreats in the first direction accordingly. Here, when the motor 66 is rotated forward, the movable body 12 moves forward toward the use position, and when the motor 66 is reversed, the movable body 12 moves backward toward the storage position.

  The drive member 103 and the second gear 105 constitute a rotation mechanism that rotates the optical engine unit 13 between the initial position and the projection position, and is an intermediate provided coaxially and integrally with the first gear 102. When the gear 108 is engaged with the second gear 105, the second gear 105 is rotationally driven by the motor 66 in conjunction with the first gear 102. At this time, the rotational force of the motor 66 is decelerated and transmitted to the second gear 105. Is done.

  As shown in FIG. 10, the drive member 103 includes a cam portion 112 with which a protrusion (engagement portion) 111 provided on the optical engine unit 13 is engaged. The cam portion 112 is formed with a cam groove 113 into which the protrusion 111 is fitted. The cam groove 113 has an inclined portion 113a inclined so as to become higher toward the side away from the hinge portion 83, and parallel portions parallel to the moving direction of the driving member 103, that is, the second direction, at both ends thereof. 113b and 113c are provided.

  In a state where the projection 111 of the optical engine unit 13 is positioned at the parallel portions 113b and 113c, the optical engine unit 13 does not rotate even when the driving member 103 moves in the second direction, but the projection 111 is positioned at the inclined portion 113a. In this state, the projection 111 moves up and down as the driving member 103 moves in the second direction, and the optical engine unit 13 rotates around the hinge portion 83 accordingly. Here, when the motor 66 is rotated forward, the optical engine unit 13 is rotated upward toward the projection position, and when the motor 66 is rotated reversely, the optical engine unit 13 is rotated downward toward the initial position.

  As shown in FIG. 7, the driving member 103 includes a plurality of (here, two) protrusions (engaging portions) 115 on the lower surface side. The protrusion 115 fits into a long hole 116 formed in the casing 82 of the control unit 14. The long hole 116 is formed long in the second direction, whereby the driving member 103 is restricted so as to move only in the second direction, and the second rack 104 provided in the longitudinal direction of the driving member 103 is formed. It arrange | positions so that it may extend in a 2nd direction.

  The protrusions 115 of the drive member 103 pass through the long holes 116 formed in the casing 82 of the control unit 14 and fit into a plurality (here, two) guide grooves 117 formed in the casing 11. As shown in FIG. 6, the guide groove 117 has a first portion 117a extending in the first direction, a second portion 117b extending in the second direction, and the first and second directions. And an inclined portion 117c extending in the inclined direction.

  In the state where the movable body 12 is located between the retracted position and the vicinity of the use position, as shown in FIG. 7, the protrusion 115 of the drive member 103 is located at the first portion 117a of the guide groove 117, and in this state, The drive member 103 is restricted by the first portion 117a of the guide groove 117 and cannot move in the second direction, but moves in the first direction together with the casing 82 of the control unit 14 that moves forward and backward in the first direction. To do. At this time, the driving member 103 is held at a position where the second rack 104 does not mesh with the second gear 105, and the second gear 105 that rotates in conjunction with the first gear 102 by the motor 66 enters an idle state.

  On the other hand, when the movable body 12 reaches the use position, as shown in FIG. 9, the protrusion 115 of the drive member 103 is positioned at the second portion 117b of the guide groove 117. In this state, the drive member 103 is guided by the guide. It is restricted by the second portion 117 b of the groove 117 and can move only in the second direction. At this time, the second rack 104 of the drive member 103 is engaged with the second gear 105. For this reason, when the second gear 105 is rotationally driven by the motor 66, the driving member 103 moves in the second direction, and the optical engine unit 13 is rotated.

  Further, in the state where the movable body 12 is located in the vicinity of the use position, as shown in FIG. 8, the protrusion 115 of the drive member 103 is located at the inclined portion 117c of the guide groove 117. In this state, the drive member 103 is Guided by the inclined portion 117 c of the guide groove 117, the second rack 104 of the drive member 103 moves in the second direction toward a position where the second rack 104 meshes with the second gear 105. When the drive member 103 reaches a position where the second rack 104 meshes with the second gear 105, the meshing between the first gear 102 and the first rack 101 is released, and the optical engine unit 13 rotates from the forward / backward movement of the movable body 12. Switch to dynamic operation.

  Here, in a state where the first gear 102 and the first rack 101 are engaged with each other, the movement of moving the driving member 103 in the first direction together with the control unit 14 by the inclined portion 117c of the guide groove 117 causes the driving member 103 to move forward and backward. In the state where the second rack 104 of the drive member 103 is engaged with the second gear 105, the drive member 103 is advanced and retracted in the second direction by the inclined portion 117c of the guide groove 117. The movement is converted into a movement that moves the control unit 14 back and forth in the first direction.

  As described above, when the image display apparatus 1 is used, the optical engine unit 13 is rotated from the initial position to the projection position following the operation of rotating the motor 66 forward and moving the movable body 12 forward from the storage position to the use position. However, when the image display apparatus 1 is stored, the motor 66 may be reversed, and in this case, the optical engine unit 13 is returned from the projection position to the initial position. Following the operation, an operation of returning the movable body 12 from the use position to the storage position is performed.

  In the image display device 1 configured as described above, the movable body 12 is automatically advanced and retracted between the storage position and the use position, and the optical engine unit 13 is rotated between the initial position and the projection position. It is not necessary for the user to hold the movable body 12 by hand and pull it out or push it in, and it is possible to avoid damaging the optical components inside the apparatus by a user operation unfamiliar with handling. Further, since the user only has to operate the operation switch 68, usability is improved.

  Further, when the user manually stores the movable body 12, the optical engine unit 13 is forgotten to return to the initial position, and the optical engine unit 13 pushes the movable body 12 in the projection position, so that the optical engine Although the unit 13 may collide with the side surface of the portable information processing device 2, in this embodiment, the optical engine unit 13 is returned to the initial position before the return operation for returning the movable body 12 from the use position to the storage position. Since the return operation is automatically performed, the collision of the optical engine unit 13 can be prevented.

  In addition, in the eject lock mechanism, that is, the movable body of the image display apparatus can be pulled out by being unlocked in response to the pressing operation of the eject button, the movable body pops out by being unlocked by vibration or impact. In this embodiment, since the gear connected to the motor meshes with the rack, the movable body does not move even if vibration or impact is applied. For this reason, it is possible to prevent the movable body from jumping out due to vibration or impact when the portable information processing apparatus is stored in a bag and carried.

  In the present embodiment, the cam groove 113 is provided on the drive member 103 and the projection 111 that engages with the cam groove 113 is provided on the optical engine unit 13 side. Conversely, the cam groove is provided on the optical engine unit 13 side. A configuration in which the protrusion is provided on the driving member 103 in addition to the provision on the side 13 is also possible.

  In this embodiment, the optical engine unit 13 is automatically set to a predetermined projection angle. However, the projection angle is finely adjusted by rotating the motor 66 in a required direction by operating the operation switch 68 or the like. You may comprise so that it can do.

  In the present embodiment, the auto loading and tilt mechanism is operated by operating the operation switch 68. However, the portable information processing apparatus 2 using an input device such as the keyboard 6 of the portable information processing apparatus 2 is used. The operation of the auto loading & tilt mechanism may be instructed from the side. Further, when returning to the retracted state, when the user presses the optical engine unit 13 or the like with a hand, a sensor can detect this and start the return operation.

  In the present embodiment, the example in which the image display device 1 is built in the portable information processing device 2 has been described. However, the image display device 1 may be built in an electronic device such as another portable information terminal device. In the present embodiment, the image display device 1 is accommodated in the accommodation space of the portable information processing device 2 so as to be replaceable with the optical disc device. A configuration is also possible in which the device is accommodated in a state where it cannot be replaced with another device.

  Further, in the present embodiment, the projection unit that is rotatably provided to change the projection angle in the vertical direction is an optical engine unit that accommodates the entire optical engine unit. However, the projection unit in the present invention is an optical unit. Any configuration that includes at least a projection optical system that is a part of the engine unit may be used. For example, a configuration in which the projection angle is changed by a mirror that configures the projection optical system is also possible.

  In this embodiment, the movable body is automatically advanced and retracted (auto loading) and the projection unit is rotated (auto tilt). However, only the movable body is advanced and retracted automatically. The rotation of the projection unit may be manually performed by the user. In this case, it is possible to adjust to an arbitrary projection angle by using a free stop hinge.

  The image display apparatus according to the present invention and the portable information processing apparatus provided with the image display apparatus have an effect that a malfunction such as damage to an optical component inside the apparatus due to a user operation unfamiliar with handling occurs. The present invention is useful as an image display device in which a movable body including an optical engine unit that projects a screen on a screen is provided so as to be able to be taken in and out of a housing, and a portable information processing device including the image display device.

DESCRIPTION OF SYMBOLS 1 Image display apparatus 2 Portable information processing apparatus 11 Case 12 Movable body 13 Optical engine unit (projection unit)
14 Control unit (support unit)
21 Optical engine portion 66 Motor 68 Operation switch 101 First rack 102 First gear 103 Driving member 104 Second rack 105 Second gear 111 Protrusion (engaging portion)
112 Cam part 113 Cam groove, 113a Inclined part, 113b, 113c Parallel part 115 Protrusion (engagement part)
116 long hole 117 guide groove, 117a first part, 117b second part, 117c inclined part

Claims (4)

An image display device having a housing and a movable body provided so as to be able to be taken in and out of the housing,
This image display device is accommodated in a drive bay formed in the main body of the portable information processing device,
The movable body includes a laser light source device that emits laser light of each color, a light modulation element that modulates the laser light emitted from the laser light source device based on a video signal, and a modulated laser light formed by the light modulation device. A projection optical system having a projection optical system for projecting an image on a screen, and a projection unit including at least the projection optical system constituting the optical engine unit, and the projection unit rotated in the vertical direction via a hinge unit. It consists of a support unit that supports movably,
A reciprocating mechanism for advancing and retracting between a storage position and use position of the movable body,
A rotation mechanism for rotating the projection unit between an initial position and a projection position;
An image display device comprising: a motor for driving the advance / retreat mechanism and the rotation mechanism . The rotation mechanism includes a drive member that rotates the projection unit by moving in a second direction orthogonal to a first direction that is a forward and backward direction of the movable body,
When the movable body moves from the retracted position in the first direction and reaches the position where the optical engine unit is completely removed from the housing , the driving force of the motor is transmitted to the driving member and the driving member There the image display apparatus according to claim 1, characterized in that it has to move in the second direction. The reciprocating mechanism includes a first rack provided on the casing side so as to extend in the first direction, meshing with the first rack, and a first gear driven by said motor,
The rotation mechanism includes a second rack provided on the drive member, and a second gear that meshes with the second rack and is driven in conjunction with the first gear by the motor.
The drive member includes an engaging portion that engages with a guide groove provided on the housing side,
When the movable body moves from the retracted position in the first direction, it is restricted by the guide groove until reaching the position where the optical engine portion of the movable body is completely removed from the housing . When the drive member is held at a position where the two racks do not mesh with the second gear, and when the optical engine portion of the movable body reaches a position where it completely comes out of the housing , the guide member is guided by the guide groove. The image display apparatus according to claim 2 , wherein the drive member is moved to a position where two racks mesh with the second gear. Said drive member in response to the drive member from moving in the second direction, claim 2 or claims characterized by comprising a cam portion for raising and lowering the engagement portion provided in the projection unit Item 4. The image display device according to Item 3 .

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