JP2016133757A - projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display an image as a reference at any position for a projection position of an image regardless of inclination of a main unit that projects an image.SOLUTION: A power supply housing unit 110 of a projector 100 is supported by a duct rail 200 via a connector 115. The power supply housing unit 110 includes a reference light irradiation unit to display a linear image onto a position to be regarded as a reference for a projection position of an image on a target wall surface. The reference light irradiation unit includes a gimbal mechanism and a laser light source and projects a linear horizontal image onto the wall surface. A vertical position of the linear image projected by the reference light irradiation unit is adjusted by a user. The user rotates a main unit 120 in a horizontal direction and a vertical direction to align a projection position of an image to the position of the projected linear image and adjusts inclination of the main unit 120 to control the image projected by the main unit 120 to be parallel to the projected linear image.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a projector.

  As an invention for correcting the inclination of an image to be projected, there is a stationary display device disclosed in Patent Document 1, for example. This display device displays an OSD reference line orthogonal to the OSD. In addition, the display device detects the tilt of the display device with respect to the gravitational field by the angle sensor, and displays the angle sensor reference line by shifting in the direction opposite to the tilt. When the user adjusts the adjuster for adjusting the vertical angle and the adjuster for adjusting the horizontal angle so that the OSD reference line and the angle sensor reference line overlap, the display device becomes horizontal and an image whose inclination is corrected is projected. .

JP 2005-338210 A

  By the way, in the display apparatus which projects an image, there exists a display apparatus of the type attached to a wall or a ceiling. In this type of display device, if the orientation of the display device is changed, an image can be projected to an arbitrary place indoors. When an image is projected to an arbitrary place, for example, the position and inclination of the image are adjusted on a wall surface or floor surface below the device. In the case of the display device of Patent Document 1, the angle sensor reference line is Since this is a reference line for leveling, it is not possible to display a reference line for correcting the inclination of the image at the position where the image is projected.

  An object of the present invention is to enable an image serving as a reference for an image projection position to be displayed at an arbitrary position regardless of the inclination of a main body that projects the image.

The present invention includes an attachment portion, a main body portion that projects an image, the attachment portion and the main body portion, and a support portion that supports the main body portion so that a projection position of the image can be changed, and the attachment portion. And a reference image display unit that displays an image serving as a reference of the projection position of the image.
According to this projector, an image serving as a reference for the image projection position can be displayed at an arbitrary position regardless of the inclination of the main body that projects the image.

In this invention, the said attaching part is good also as a structure which has a power supply part which supplies electric power to the said main-body part.
According to this configuration, since the power source unit is not provided in the main body unit, the weight of the main body unit can be reduced and the load on the support unit can be reduced.

In the present invention, the image displayed by the reference image display unit is linear, and the length of the linear image displayed by the reference image display unit is longer than the width of the image projected by the main body unit. Also good.
According to this configuration, when a plurality of images are projected by a plurality of projectors, the positions of the plurality of images can be aligned with the position of the image serving as a reference for the projection position.

In the present invention, the reference image display unit may be detachable from the attachment unit.
According to this configuration, when the position of the image is not adjusted, the reference image display unit can be removed to reduce power consumption.

In the present invention, the reference image display unit may be configured to be movable in a vertical direction at a position where the image is displayed.
According to this configuration, the image serving as a reference for the projection position can be moved in the vertical direction, and the projection position of the image can be adjusted in the vertical direction.

In the present invention, the image displayed by the reference image display unit may be linear, and the reference image display unit may be configured to change the inclination of the image with respect to the horizontal direction.
According to this configuration, it is possible to project an image to be projected with an inclination along an image serving as a reference to be displayed.

In the present invention, the reference image display unit may display a crossed linear image.
According to this configuration, the image projection position can be adjusted in the horizontal direction and the vertical direction.

1 is a perspective view of a projector 100 according to the present invention. The front view and side view of the projector 100. FIG. FIG. 2 is a block diagram showing a hardware configuration of the projector 100. The schematic diagram of the positional relationship of the reference light L1 irradiated to a wall surface, and the image P to project. The schematic diagram of the reference light L1 irradiated to the wall surface, and the projected image P. FIG. The schematic diagram of the reference light L1 irradiated to the wall surface, and the projected image P. FIG. The schematic diagram of the reference light L1 irradiated to the wall surface, and the projected images P1-P3.

[Embodiment]
FIG. 1 is a perspective view of a projector 100 according to the present invention, FIG. 2A is a front view of the projector 100, and FIG. 2B is a side view of the projector 100. 1 and 2 also show a duct rail 200 to which the projector 100 is attached.

  The duct rail 200 is a rail that supplies power to the projector 100, and corresponds to, for example, a JIS C8366 standard lighting duct. The duct rail 200 is installed on a ceiling surface, a wall surface, or a floor surface. For convenience of understanding, FIG. 1 shows a cross section of the duct rail 200, but the end of the duct rail 200 may not be open. A projector 100 and a lighting fixture are attached to the duct rail 200. The duct rail 200 is connected to a commercial power source and supplies power to the attached lighting fixture or the projector 100.

  The hollow duct rail 200 has an opening 201 extending along the longitudinal direction, and supports a connector and the like inserted from the opening 201. When the duct rail 200 is fixed to the ceiling surface, the opening 201 faces downward, and the projector 100, a lighting fixture, and the like can be attached and suspended from below. The duct rail 200 may be fixed to the wall surface. In this case, the direction of the opening 201 is a horizontal direction, and the projector 100, a lighting fixture, or the like can be attached and fixed from the side.

  The duct rail 200 has a pair of conductors 205A and 205B along the longitudinal direction of the main body of the duct rail 200 inside. The conductors 205A and 205B are made of a conductive metal formed in a rod shape or a belt shape, and one is connected to the ground side of the commercial power source and the other is connected to the non-ground side of the commercial power source. Further, the duct rail 200 has grooves 206A and 206B into which members wider than the opening 201 are fitted. The grooves 206 </ b> A and 206 </ b> B are on both sides of the opening 201 inside the duct rail 200, and the objects fitted in the grooves 206 </ b> A and 206 </ b> B are supported by the duct rail 200.

  The projector 100 is a device that has a light source and projects an image by modulating light emitted from the light source. The projector 100 includes a power supply housing part 110, a main body part 120, and a support member 130 for connecting the power supply housing part 110 and the main body part 120. The power supply accommodating part 110 has an elongated, substantially box-shaped housing, and houses a power supply circuit in the housing. The power supply accommodating part 110 is an example of an attachment part for attaching the projector 100 to the duct rail 200. The main body 120 has a substantially box-shaped casing, and accommodates various circuits for projecting images and a projection optical system in the casing. In addition, the shape of the housing of the main body 120 is not limited to a box shape, and may be other shapes such as a cylindrical shape or a polygonal column shape.

  The upper end of the support member 130 is connected to the bottom surface of the power supply accommodating part 110. The support member 130 rotates in the arrow A direction and the arrow B direction around the central axis. A connecting portion 131 that connects the supporting member 130 and the main body 120 is attached to the lower end of the supporting member 130. The connecting portion 131 includes a support 131A, a ball 131B, and a flange 131C. In the connecting portion 131, a spherical ball 131B is attached to one end of the support post 131A, and a flange 131C is attached to the other end. That is, the connection part 131 has the same structure as a free pan head. The ball 131B is inserted into the support member 130, and the flange 131C is attached to the upper surface of the main body 120. Since the ball 131B supported in the support member 130 is configured to freely rotate inside the support member 130, the vertical direction of the main body 120 attached to the flange 131C and the horizontal direction of the main body 120. The inclination with respect to the direction can be changed and fixed. The support member 130 and the connecting portion 131 constitute a support portion that supports the main body portion 120.

  The power supply accommodating portion 110 has a connector 115 coupled to the duct rail 200 on the upper surface side of the housing, and the cable 105 connected to the main body portion 120 and supplying power to the main body portion 120 is connected to the lower surface side of the housing. Have. Further, the power storage unit 110 has an opening 118 for outputting a laser beam for displaying a linear image that serves as a reference line for the projection position of the image. In the power supply accommodating part 110, the support member 130 is arrange | positioned at the lower surface of a housing | casing, and the central axis of the support member 130 and the central axis of the connector 115 correspond. The connector 115 has a prismatic shape and protrudes upward from the upper surface of the power supply accommodating portion 110. A pair of plate-like portions 116A and 116B and a pair of conductors 117A and 117B are provided on the side surface of the connector 115 along the horizontal direction.

  The plate-like portions 116A and 116B are formed into a flat plate shape, and the conductors 117A and 117B are formed by forming a conductive metal into a flat plate shape. As shown in FIGS. 2A and 2B, the plate-like portions 116A and 116B protrude from the connector 115 in opposite directions, and the conductors 117A and 117B protrude from the connector 115 in opposite directions. That is, the plate-like portions 116A, 116B and the conductors 117A, 117B protrude in the front-rear direction (short direction) of the power supply accommodating portion 110 and are orthogonal to the left-right direction (longitudinal direction) of the casing of the power supply accommodating portion 110. ing.

  When the projector 100 is attached to the duct rail 200, the connector 115 is inserted into the opening 201. When the connector 115 is inserted into the opening 201, the connector 115 is inserted into the opening 201 such that the plate-like portions 116 </ b> A and 116 </ b> B and the conductors 117 </ b> A and 117 </ b> B are oriented along the longitudinal direction of the duct rail 200. After the plate-like portions 116A and 116B and the conductors 117A and 117B enter the inside of the duct rail 200, when the power supply accommodating portion 110 is rotated by 90 degrees about the central axis of the connector 115, the connector 115 becomes the duct rail 200. Connected.

  By rotating the power supply accommodating portion 110, the conductors 117A and 117B come into contact with the conductors 205A and 205B of the duct rail 200. The conductors 117A and 117B are connected to a power supply circuit accommodated in the power supply accommodating portion 110 via a conductor (not shown) embedded in the connector 115. For this reason, when the connector 115 is connected to the duct rail 200, power is supplied from the conductors 205A and 205B to the power supply accommodating portion 110 via the conductors 117A and 117B, and the projector 100 can be operated.

  Moreover, by rotating the power supply accommodating part 110, plate-like part 116A, 116B is inserted into groove | channel 206A, 206B, and the connector 115 is fixed to the duct rail 200 via plate-like part 116A, 116B. When the projector 100 is attached to the duct rail 200 provided on the ceiling, the entire projector 100 is supported by the duct rail 200 via the connector 115.

  Thus, by providing the connector 115, the power supply accommodating part 110 can be attached to the duct rail 200 easily. In a state where the power supply accommodating part 110 is attached to the duct rail 200, the longitudinal direction of the casing of the power supply accommodating part 110 and the longitudinal direction of the duct rail 200 coincide and become parallel. For this reason, there exists an advantage that the power supply accommodating part 110 looks integral with the duct rail 200, and is not conspicuous.

  A projection port 128 is provided in front of the main body 120. The projection port 128 is an opening through which modulated light for projecting an image passes, and a lens or the like is attached thereto. When the projector 100 is fixed to the duct rail 200 attached to the ceiling surface, the direction in which the projection port 128 faces, that is, the image projection direction can be changed in the horizontal direction by rotating the support member 130. Further, the projection direction of the image can be changed in the vertical direction by changing the vertical direction of the main body 120 at the connecting portion 131, and the inclination of the image can be changed by changing the inclination of the main body 120 in the horizontal direction at the connecting portion 131. Can be changed.

Next, the configuration of the main body 120 will be described with reference to FIG. FIG. 3 is a block diagram illustrating a hardware configuration of the projector 100.
The power storage unit 110 includes a power circuit 21 and a reference light irradiation unit 22. The power supply circuit 21 is supplied with power from the conductors 117 </ b> A and 117 </ b> B provided on the connector 115. The power supply circuit 21 is an example of a power supply unit that supplies necessary power to each unit of the projector 100, and includes an AC-DC conversion circuit, a transformer, a switching circuit, and the like to supply power. The power supply circuit 21 supplies power to each part of the projector 100 via the cable 105.

  The reference light irradiation unit 22 includes a gimbal mechanism (not shown) and a light output unit (not shown) that outputs laser light so that the laser beam is displayed as a linear image on the projection surface. Like the so-called laser marking device, the reference light irradiation unit 22 keeps the light output unit horizontal by a gimbal mechanism, and outputs laser light (hereinafter referred to as reference light for convenience of explanation) from the light output unit, A linear image serving as a reference line for the image projection position is displayed. The reference light irradiation unit 22 is connected to the control unit 11 and can change the position of the reference light to be output in the vertical direction under the control of the control unit 11. The reference light irradiation unit 22 is an example of a reference image display unit that displays an image serving as a reference for a projection position of an image irradiated by the main body unit 120.

  The main body unit 120 includes a control unit 11, a storage unit 12, an operation unit 13, and a projection unit 14. The main body unit 120 includes an image processing unit 15, an interface unit 16, and a communication unit 18. The control unit 11 is a microcomputer including a central processing unit (CPU), a read only memory (ROM), and a random access memory (RAM). When the CPU executes a program stored in the ROM, the control unit 11 controls each unit to realize various functions such as a function of projecting an image and a function of outputting reference light. The storage unit 12 includes a nonvolatile memory, and stores image data of an image to be projected, setting values related to the image quality of the image to be projected, information related to settings of various functions, and the like.

  The communication unit 18 has a wireless communication interface. The communication unit 18 performs wireless communication with an external device and acquires image data. The image data acquired by the communication unit 18 is stored in the storage unit 12. The operation unit 13 includes a plurality of buttons for operating the projector 100. The control unit 11 controls each unit in accordance with the operated button, whereby adjustment of an image to be projected, output of reference light, adjustment of a display position of reference light, and the like are performed.

  The interface unit 16 has a slot into which a recording medium such as a memory card is inserted. The interface unit 16 reads image data stored in the recording medium and supplies the read image data to the image processing unit 15.

  The image processing unit 15 acquires image data supplied from the interface unit 16. Further, the image processing unit 15 acquires image data of an on-screen image that displays a GUI (Graphical User Interface) for operating the projector 100, a state of the projector 100, and the like from the control unit 11. The image processing unit 15 has a plurality of image processing functions such as image quality adjustment, performs image processing on the image data supplied from the interface unit 16, and supplies a video signal of an image to be projected to the projection unit 14. Further, when the image data of the on-screen image is supplied from the control unit 11, the image processing unit 15 supplies a video signal on which the on-screen image is superimposed to the projection unit 14.

  The projection unit 14 that projects an image includes a light source 141, a light valve 142, a drive circuit 144, and a projection optical system 143. The light source 141 is a lamp that emits light, and the light emitted from the light source 141 is split into red, green, and blue light by a plurality of dichroic mirrors and mirrors (not shown), and each of the split red, green, and blue is split. Is guided to the light valve 142. The light source 141 may be a light emitting diode or a semiconductor laser device that emits laser light instead of a lamp.

  The drive circuit 144 acquires the video signal supplied from the image processing unit 15. The video signal supplied to the drive circuit 144 includes gradation data representing the gradation of the red component in the projected image, gradation data representing the gradation of the green component in the projected image, and the blue component in the projected image. Gradation data representing the gradations. The drive circuit 144 extracts gradation data of each color of red, green, and blue, and drives the light valve 142 based on the extracted gradation data of each color.

  The light valve 142 includes the above-described liquid crystal light valve on which red light is incident, the above-described liquid crystal light valve on which green light is incident, and the above-described liquid crystal light valve on which blue light is incident. The liquid crystal light valve is a transmissive liquid crystal panel and includes pixels arranged in a matrix with a plurality of rows and a plurality of columns. A liquid crystal light valve that receives red light is driven based on red gradation data, and a liquid crystal light valve that receives green light is driven based on green gradation data, and a liquid crystal light that receives blue light. The valve is driven based on the blue gradation data. In each liquid crystal light valve, each pixel is controlled by the drive circuit 144, and the transmittance of the pixel changes. By controlling the transmittance of the pixels, the light of each color transmitted through the liquid crystal light valve becomes an image corresponding to each gradation data. Images of red, green, and blue light transmitted through the liquid crystal light valve are combined by a dichroic prism (not shown) and are incident on the projection optical system 143. The projection optical system 143 is an optical system that magnifies an incident image, and magnifies and projects the incident image with a lens or a mirror.

FIG. 4 is a side view showing a state where the projector 100 is projecting an image and outputting reference light, and FIG. 5 is a front view showing the projected image and irradiated reference light.
When adjusting the projection position of an image projected from the projector 100, first, the user operates the operation unit 13 to output reference light from the power storage unit 110. As shown in FIG. 4, when the reference light irradiation unit 22 outputs the reference light L1 in response to a user operation, as shown in FIG. 5, the reference light L1, which is a horizontal linear image, is projected on the wall surface (projection). Surface). Here, the horizontal length of the reference light L1 is longer than the horizontal width of the image P projected by the projector 100, for example, as shown in FIG.

  Next, the user operates the operation unit 13 so that the reference light L1 is irradiated to a position serving as a reference when an image is projected in the vertical direction. When the user operates the operation unit 13, the reference light irradiation unit 22 is controlled by the control unit 11, and the irradiation position of the reference light L1 is in the upward direction (arrow C direction in FIG. 5) or in the downward direction (arrow D direction in FIG. 5). Move to. When the user finishes setting the irradiation position of the reference light L1 in the vertical direction, the user moves the connecting portion 131 so that the reference light L1 and the upper end of the image P overlap, and adjusts the vertical projection position and inclination of the image P. . Further, the user adjusts the horizontal projection position of the image P by rotating the support member 130.

FIG. 6 is a diagram illustrating a state after the adjustment of the vertical direction, the horizontal direction, and the inclination of the image P is completed. When the adjustment of the display position and inclination of the image P is completed, the user operates the operation unit 13 to stop the output of the reference light.
In the present invention, a plurality of projectors 100 may be attached to the duct rail 200 and a plurality of images may be projected onto the wall surface.

  FIG. 7 is a diagram illustrating an example in which a plurality of images are projected in alignment with the reference light L1. When projecting a plurality of images, the reference light L1 can be output from one projector 100, and the images P1 to P3 projected from the projectors 100 can be aligned with the reference light L1.

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It can implement with another various form. For example, the present invention may be implemented by modifying the above-described embodiment as follows. In addition, you may implement each embodiment mentioned above and the following modifications, combining one or more suitably.

In the embodiment described above, the control unit 11 controls the reference light irradiation unit 22 and adjusts the display position of the reference light L1 according to the operation performed on the operation unit 13, but the display of the reference light L1 is performed. The configuration for adjusting the position is not limited to this configuration.
For example, the reference light irradiation unit 22 may not be provided with a gimbal mechanism, and the tilt of the light output unit with respect to the vertical direction and the tilt of the light output unit with respect to the horizontal direction may be changed by motor control. According to this configuration, for example, the reference light L1 can be tilted with respect to the horizontal direction, and a plurality of images can be projected in an oblique direction.
In addition, as a configuration that can change the tilt of the light output unit with respect to the vertical direction and the tilt of the light output unit with respect to the horizontal direction, the tilt is mechanically changed by operating a knob provided in the power supply housing unit 110 instead of motor control. It is good also as composition to do.

  In the above-described embodiment, the output of the reference light L1 and the position adjustment of the reference light L1 are performed by operating the operation unit 13 provided in the main body 120. For example, a remote using infrared light is used. A configuration in which the main body 120 is operated by a controller and a configuration in which the output of the reference light L1 and the position adjustment of the reference light L1 are performed by operating the remote controller may be employed.

In the above-described embodiment, the user moves the main body 120 by hand to adjust the position of the image P, but is not limited to this configuration. For example, the rotation of the main body 120 in the horizontal direction, the rotation in the vertical direction, and the adjustment of the inclination with respect to the horizontal direction may be performed electrically using, for example, a driving force of a motor. In addition, when the main body 120 is electrically rotated in the horizontal direction, rotated in the vertical direction, or tilted with respect to the horizontal direction, the main body 120 may be operated by a remote controller. Further, the position of the projected image may be adjusted by a so-called lens shift function.
In addition, in the configuration that electrically adjusts the rotation of the main body 120 in the horizontal direction, the rotation in the vertical direction, the inclination with respect to the horizontal direction, the configuration is limited to a configuration in which the user adjusts using the operation unit 13 or the remote controller. is not. For example, an imaging device is provided in the main body 120 or the power supply housing 110, and the reference light L1 and the projected image P are captured by the imaging device. The control unit 11 analyzes the image obtained by the image sensor to identify the positional relationship between the reference light L1 and the image P, and is electrically driven so that the reference light L1 and the upper end of the image P overlap. You may adjust the rotation to a horizontal direction, the rotation to a perpendicular direction, the inclination with respect to a horizontal direction, etc.

  In the above-described embodiment, the reference light L1 displayed linearly has a longitudinal direction along the horizontal direction, but the longitudinal direction of the reference light L1 may be a vertical direction. In addition, when the longitudinal direction of the reference light L1 is the vertical direction, a plurality of reference lights L1 may be arranged in the horizontal direction to irradiate the wall surface. Further, the reference light applied to the wall surface may be obtained by orthogonally crossing the reference light extending in the horizontal direction and the reference light extending in the vertical direction.

  In the embodiment described above, the projector 100 is attached and fixed to the duct rail 200 disposed on the ceiling surface or wall surface. However, the projector 100 may be attached to the ceiling surface or wall surface with a bracket.

  In the embodiment described above, the reference light irradiation unit 22 is housed inside the power supply housing unit 110. For example, the reference light irradiation unit 22 is disposed on the upper surface or the lower surface of the casing of the power supply housing unit 110, The reference light irradiation unit 22 may be configured to be rotatable in the horizontal direction. According to this configuration, it is possible to irradiate the reference light L1 not only on the wall surface on the front side of the power storage unit 110 but also on the wall surface on the back side and the wall surface on the side surface side. Further, in the configuration in which the reference light irradiation unit 22 is provided outside the casing of the power supply housing unit 110, the reference light irradiation unit 22 may be detachable from the power supply housing unit 110.

  In the embodiment described above, the power supply circuit 21 and the reference light irradiation unit 22 are provided in the housing having the connector 115, but the power supply circuit 21 may be provided inside the main body 120.

  In the above-described embodiment, the light source 141 modulates the light of the liquid crystal light valve. However, what modulates the light is not limited to the liquid crystal light valve. For example, DMD (Digital Mirror Device) It is good.

  In the embodiment described above, the reference light L1 irradiated to the projection slope is laser light, but the reference light L1 displayed on the projection plane by the reference light irradiation unit 22 is not limited to laser light. . For example, the reference light irradiation unit 22 is configured to modulate light from a light source with a light valve to form an image of the reference light L1, and project an image of the reference light L1 formed with the light valve onto a projection surface. Also good.

  DESCRIPTION OF SYMBOLS 11 ... Control part, 12 ... Memory | storage part, 13 ... Operation part, 14 ... Projection part, 15 ... Image processing part, 16 ... Interface part, 18 ... Communication part, 21 ... Power supply circuit, 22 ... Reference light irradiation part, 100 ... Projector, 105 ... Cable, 110 ... Power supply accommodating portion, 115 ... Connector, 116A, 116B ... Plate-like portion, 117A, 117B ... Conductor, 118 ... Opening portion, 120 ... Main body portion, 128 ... Projection port, 130 ... Support member, 131 ... connecting portion, 131A ... support, 131B ... ball, 131C ... flange, 200 ... duct rail, 201 ... opening, 205A, 205B ... conductor, 206A, 206B ... groove, L1 ... reference light, P, P1-P3 ... image

Claims (7)

A mounting part;
A main body for projecting an image;
A support part that connects the attachment part and the main body part and supports the main body part so that a projection position of the image can be changed;
A reference image display unit that is provided in the attachment unit and displays an image serving as a reference of a projection position of the image;
Projector.   The projector according to claim 1, wherein the attachment unit includes a power supply unit that supplies power to the main body unit.   The image displayed by the reference image display unit is linear, and the length of the linear image displayed by the reference image display unit is longer than the width of the image projected by the main body unit. Projector.   The projector according to claim 1, wherein the reference image display unit is detachable from the attachment unit.   The projector according to claim 1, wherein the reference image display unit is movable in a vertical direction at a position where the image is displayed. The image displayed by the reference image display unit is linear,
The projector according to claim 1, wherein the reference image display unit can change a tilt of the image with respect to a horizontal direction.   The projector according to claim 1, wherein the reference image display unit displays crossed linear images.

Images