JP2007094288A - Projector apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector, a single attachment, and a projector main body which make it possible to properly project an image in any one of different projecting directions by providing two or more forms of attaching the single attachment to the projector main body and by changing the form of attaching the single attachment to the projector main body. <P>SOLUTION: The attachment PJb is attached to the step section 10c of the projector main body PJa such that a projection opening 117 faces a lower horizontal projecting plane Sa, an upper horizontal projecting plane Sb, left vertical projecting plane Sc or right vertical projecting plane Sd. Specifically, the attachment parts (the rear wall 111 of a housing member 110 and each locking claw) of the attachment PJb are attached to the attachment parts (the front wall 11 of a head section 10b and each L-shaped hole) of the step section 10c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a projector that optically projects an image toward a projection surface.

Conventionally, as this type of projector, for example, there is a projector disclosed in Patent Document 1 below. In this projector, the image projected by the projection optical system is reflected by the reflecting mirror toward the projection surface. Here, the projection plane is perpendicular to the installation plane of the projector.
JP 2002-090879 A

  By the way, the projector is usually used by being installed on a desk top surface or a ceiling surface. In such a mode of use, depending on the projector, even if an image can be appropriately projected onto a projection plane perpendicular to the desk top surface or the ceiling surface, as long as the installation state of the projector itself is not changed, An image cannot be appropriately projected onto a horizontal projection surface on the ceiling surface.

  Therefore, in order to deal with the above-described problems, the present invention has been devised so that there are a plurality of attachment forms between the projector body and the attachment that can be detachably attached to the projector body. Another object of the present invention is to provide a projector, an attachment, and a projector body that can appropriately project an image in different projection directions by changing a mounting method (mounting form) with the projector body.

In solving the above-described problem, a projector according to the present invention provides a projector according to claim 1.
Display means for displaying an image and projection means for optically projecting a display image from the display means.

In the projector, at least a projector main body incorporating a display means;
Including at least a part of the projection means, and an attachment used by being attached to the projector body,
The attachment has an attachment side mounting part for mounting on the projector body,
The projector main body includes a projector main body side mounting portion to which the attachment is mounted in correspondence with the attachment side mounting portion,
When attaching the attachment to the projector body, there are at least two forms in which the attachment-side attachment part is attached to the projector body-side attachment part, and the projection in which the display image is projected optically according to each attachment form The direction is set to be different.

  As a result, even if the arrangement position of the projector main body is maintained as it is, the projection direction of the projection means can be easily set to one of a plurality of different projection directions by changing the attachment form of the attachment to the projector main body. It becomes possible to project onto the projection plane corresponding to the projection direction.

According to a second aspect of the present invention, there is provided a projector according to the present invention.
Display means for displaying an image and projection means for optically projecting a display image from the display means.

In the projector, at least a projector main body incorporating a display means;
An attachment containing at least a part of the projection means,
The attachment is provided with a mounting part that is detachably mounted on the mounting part provided in the projector body,
The attachment mounting portion is configured with the projector main body mounting portion so that the projection direction of the projection means is set to one of a plurality of different projection directions when the attachment mounting portion is mounted on the projector main body mounting portion. It is characterized by.

  As described above, the attachment mounting portion is configured together with the projector main body mounting portion so that the projection direction of the projection means is set to one of a plurality of different projection directions when the attachment mounting portion is mounted on the projector main body mounting portion. Has been.

  Therefore, even if the arrangement position of the projector main body is maintained as it is, by attaching the attachment mounting portion to the projector main body mounting portion so that the projection direction of the projection means is set to one of a plurality of different projection directions, The projection direction of the projection means can be easily set to any one of a plurality of different projection directions, and projection can be performed on the projection plane corresponding to the projection direction.

According to a third aspect of the present invention, in the projector according to the first aspect,
When attaching the attachment to the projector main body, the projection direction of the projection means is at least one of the downward direction and the upward direction according to any one of the above two or more forms in which the attachment side attachment portion is attached to the projector main body side attachment portion. It is set to the direction of.

  Thereby, the projection direction of the projection means can be easily set to at least one of the downward direction and the upward direction. Therefore, the display image from the display unit can be easily projected onto the projection surface corresponding to the upward or downward direction of the projection unit. In addition, the downward direction is a general term for a downward direction that is vertically downward or slightly forward from the vertical downward direction with respect to the installation surface, and an upward direction that is an upward direction that is vertically upward or slightly upward from the vertical direction relative to the installation surface. .

  According to a fourth aspect of the present invention, in the projector according to the first or third aspect, when the attachment is mounted on the projector main body, the attachment side mounting portion is mounted on the projector main body side mounting portion. The projection direction of the projection unit is set to a horizontal direction according to any one of the two or more embodiments.

  As a result, the display image from the display means can be easily projected onto a horizontal projection plane positioned perpendicular to the horizontal plane such as the projector installation plane. The horizontal direction includes a direction slightly upward or slightly downward from the horizontal direction, and is not limited to the front horizontal direction, or is not limited to the front horizontal direction, but also the right direction, the left direction, and the rear direction. It is a generic term that includes the horizontal direction.

According to a fifth aspect of the present invention, in the projector according to the first, third, or fourth aspect, when the attachment is mounted on the mounting portion of the projector main body at the mounting portion, this mounting form is used. It has an attachment information detection means which detects at least one of both the identification information to identify, and the information regarding the attachment in the said mounting form, According to this, The effect of the invention of Claim 1, 3 or 4 characterized by the above-mentioned. In achieving the above, by identifying at least one of the identification information for identifying the attachment form of the attachment and the information regarding the attachment in the attachment form by the attachment information detecting means, the information for identifying the attachment form and the attachment in the attachment form Get at least one of both information about It is done.

  According to a sixth aspect of the present invention, in the projector according to the fifth aspect, the projector according to the fifth aspect further comprises information notifying means for notifying at least one of both the identification information and the information related to the attachment in the mounting form. It is characterized by.

  Thereby, at least one of the identification information on the attachment form of the attachment to the projector main body and the information on the attachment in the attachment form can be quickly recognized. As a result, the effect of the invention of claim 5 can be further improved.

  Further, according to the present invention, according to the seventh aspect, in the projector according to the fifth or sixth aspect, the display unit is configured to display at least one of both the identification information and the information on the attachment in the mounting form. An image control means for controlling the displayed image is provided.

  Accordingly, at least one of the identification information of the attachment mounting form identified by the identification information and the information related to the attachment in the mounting form may be an attachment mounting form corresponding to the downward projection direction of the projection unit. For example, since the projection distance of the projector is short, the brightness on the projection surface of the display image by the display means has a sufficient margin and sometimes tends to be excessive, so that the brightness of the display image is reduced. Can be controlled.

  This control prevents the display image from becoming excessively bright on the projection surface even when the projection unit projects downward, and reduces power consumption within an appropriate brightness. It becomes possible to suppress.

  Also, the attachment mounting mode in which at least one of the identification information of the mounting mode of the attachment identified by the identification information and the information related to the attachment in the mounting mode corresponds to the upward or horizontal projection direction of the projection unit. Then, since the projection distance of the projector is long and the brightness on the projection surface of the display image by the display means tends to be insufficient, the brightness of the display image by the display means can be controlled to be high.

  By controlling in this way, even if the projection unit projects upward or the projection unit projects in the horizontal direction, the display image has a good brightness on the projection plane without a lack of brightness. It becomes easier to see.

  According to the eighth aspect of the present invention, the attachment according to the present invention is an attachment that is detachably attached to the projector main body included in the projector according to any one of the first to seventh aspects.

  Thereby, as an attachment suitable for the projector that achieves the operational effect of the invention according to any one of claims 1 to 7, an attachment that enables projection of a new specification (for example, in a new projection direction) is added. Provision is possible.

  According to a ninth aspect of the present invention, there is provided a projector main body provided in the projector according to any one of the first to seventh aspects.

  Accordingly, it is possible to additionally provide a projector main body that enables projection of a new specification (for example, in a new projection direction) as a projector that achieves the operational effect of the invention according to any one of claims 1 to 7. Become.

Hereinafter, each embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 shows a first embodiment of a projector according to the present invention. This projector includes a projector body PJa and an attachment PJb that is detachably attached to the projector body PJa. Here, the attachment PJb is employed as an attachment for downward projection, upward projection, leftward projection, or rightward projection (see FIG. 1). 1 corresponds to the front direction of the projector. Accordingly, in FIG. 1, the upward direction, the downward direction, the diagonally lower right direction, and the diagonally upper left direction in the figure correspond to the upward direction, the downward direction, the left direction, and the right direction of the projector, respectively.

  In the first embodiment, the above-described downward projection, upward projection, leftward projection, or rightward projection is performed in the downward direction, upward direction, left direction, or attachment PJb when the attachment PJb is attached to the projector main body PJa. Projection to the right (see FIG. 1).

  Here, the downward projection refers to a projection onto the installation plane of the projector or a horizontal plane close to the installation plane, such as a lower horizontal projection plane Sa (see FIG. 1). The upward projection refers to the upper horizontal plane such as the ceiling of the projector, for example, the upper horizontal projection plane Sb (see FIG. 1).

  The leftward projection refers to a projection onto a vertical plane that is positioned perpendicular to the left side of the projector with respect to a horizontal plane such as the floor or the installation surface of the projector, for example, the left vertical projection plane Sc (see FIG. 1). . Further, the projection in the right direction is performed on a vertical plane positioned on the right side of the projector, for example, the right vertical projection plane Sd (see FIG. 1) with respect to a horizontal plane such as the floor or the installation plane of the projector. Say.

  As shown in FIG. 1, the projector main body PJa includes a housing member 10, and the housing member 10 is configured by projecting a head portion 10 b on the body portion 10 a. As shown in FIG. 1, the head portion 10 b is located behind the front wall of the trunk portion 10 a on the front wall 11, and the head portion 10 b is stepped on the front portion of the trunk portion 10 a. The part 10c is formed in an L shape. The step portion 10c has the front wall 11 of the head portion 10b as the rear wall and the upper wall front side portion 12 of the trunk portion 10a as the bottom wall.

  As shown in FIGS. 2 and 3 in an enlarged manner, the stepped portion 10c has an opening 13, and this opening 13 is formed at the center of the rear wall of the stepped portion 10c (the front wall 11 of the head 10b). Thus, it faces a liquid crystal panel 100 (see FIG. 6) described later. Moreover, the said step part 10c is provided with the four L-shaped hole parts 14-17, and each of these L-shaped hole parts 14-17 is opened to the rear wall (front wall 11 of the head part 10b) of the step part 10c. It is formed along the same circumference at equal angular intervals around the opening 13 with respect to the center of the portion 13.

  Since the four L-shaped hole portions 14 to 17 are all formed in the same shape, the L-shaped hole portion 14 is taken as an example to describe the configuration. The L-shaped hole portion 14 includes an insertion hole portion 14a and a guide hole portion 14b. As shown in FIG. 3, the guide hole portion 14b extends rightward from the lower portion of the right inner wall of the insertion hole portion 14a. The guide hole portion 14b is inserted into the insertion hole portion 14a at its left end. It communicates from the lower right inner wall.

  Here, the lateral width of the guide hole portion 14b is equal to the lateral width of the insertion hole portion 14a. The vertical width of the guide hole 14b is equal to half the vertical width of the insertion hole 14a.

  As shown in FIG. 3, the remaining L-shaped hole portions 15, 16, and 17 are inserted through hole portions 15a, 16a, 17a corresponding to the inserted hole portion 14a and the guide hole portion 14b of the L-shaped hole portion 14 and the guide, respectively. Holes 15b, 16b, and 17b are provided.

  Here, in the L-shaped hole part 15, the guide hole part 15b extends downward from the left inner wall lower part of the insertion hole part 15a. In the L-shaped hole part 16, the guide hole part 16b is located on the left side of the insertion hole part 16a. It extends from the inner wall upper part to the left, and in the L-shaped hole part 17, the guide hole part 17b is extended upward from the upper part inner wall right part of the insertion hole part 17a.

  However, as shown in FIG. 3, the L-shaped hole portion 14 is shifted to the left side by a predetermined angle (for example, 10 °) from the center line L1 of the opening portion 13 at the insertion hole portion 14a. The L-shaped hole portion 15 is formed at the insertion hole portion 15a above the other center line L2 of the opening 13 (center line orthogonal to the center line L1) by the predetermined angle. And formed on the front wall 11 of the head 10b.

  Further, the L-shaped hole portion 16 is formed in the front wall 11 of the head portion 10b by being shifted to the right side by the predetermined angle from the center line L1 of the opening portion 13 at the insertion hole portion 16a. 17 is formed in the front wall 11 of the head portion 10b at the insertion hole portion 17a so as to be shifted downward from the other center line L2 of the opening portion 13 by the predetermined angle. The front wall 11 of the head 10b and the L-shaped hole portions 14 to 17 correspond to the projector main body side mounting portion according to the present invention.

  Further, as shown in FIGS. 2 and 3, the projector main body PJa includes four plate-like lock springs 18a to 18d, and these lock springs 18a to 18d correspond to the L-shaped hole portions 14 to 17, respectively. It is supported from the inside by the front wall 11 of the head 10b at the position. Here, the lock springs 18a to 18d are supported by the front wall 11 of the head portion 10b along the same circumference at equal angular intervals on the outer peripheral side of the L-shaped hole portions 14 to 17.

  As shown in FIGS. 2 and 3, the lock spring 18a is fixed to the vicinity of the L-shaped hole portion 14 of the front wall 11 of the head 10b at both ends thereof, and the central portion 19a of the lock spring 18a. Is bent in a V shape from both ends of the lock spring 18a, and protrudes toward the boundary between the insertion hole 14a and the guide hole 14b of the L-shaped hole 14 at the top. Thereby, the lock spring 18a is elastically deformable centering | focusing on the center part 19a.

  As shown in FIGS. 2 and 3, the remaining lock springs 18b, 18c and 18d are respectively connected to the L-shaped hole portions 15, 16 and 17 of the front wall 11 of the head 10b at both ends thereof. These lock springs 18b, 18c, and 18d are fixed to the vicinity, and are configured in the same manner as the lock spring 18a, and the insertion hole portions of the corresponding L-shaped hole portions 15, 16, and 17 at the respective top portions thereof. It protrudes toward the boundary between 15a, 16a and 17a and the corresponding guide hole portions 15b, 16b and 17b, and can be elastically deformed around the central portions 19b, 19c and 19d.

  Further, as shown in FIG. 6, the projector main body PJa includes an operation panel P, a control unit U, a lamp 80, an illumination optical system 90, and a liquid crystal panel 100 (hereinafter also referred to as LCD 100). The operation panel P is provided at a suitable position on the outer wall of the housing member 10, and the operation panel P outputs an operation output to the control unit U under selective operation of a plurality of push-type menu operation keys (not shown). To enter.

  The control unit U is built in the housing member 10 together with the lamp 80, the illumination optical system 90, and the LCD 100. As shown in FIG. 6, the control unit U is connected to the operation panel P, the lamp 80 and the LCD 100, and the control unit U includes a microcomputer 20 and mounting sensors 31 to 34. Note that the mounting sensors 31 to 34 and the microcomputer 20 correspond to the attachment information detecting means referred to in the present invention.

  The microcomputer 20 is configured by connecting the CPU, ROM, and RAM, which are the main components, via a bus line. The microcomputer 20 performs processing based on the operation input of the operation panel P by the CPU, Identification information of the attachment form of the attachment PJb based on the detection signal of any of the attachment sensors 31 to 34, identification processing of other information (for example, projection direction) regarding the attachment PJb, and the lamp driving circuit 40 based on this identification processing Various processes such as a driving process are performed.

  Each of the mounting sensors 31 to 34 is configured by a normally open type micro switch. As shown in FIG. 3, the mounting sensor 31 includes a pushing portion 31 a, and the mounting sensor 31 moves the pushing portion 31 a to the guide hole portion in the vicinity of the guide hole portion 14 b of the L-shaped hole portion 14. It is supported by the front wall 11 of the head 10b so as to protrude toward the 14b side.

  Further, as shown in FIG. 3, the remaining mounting sensors 32, 33, and 34 are provided with respective pushing portions 32a, 33a, and 34a, and these mounting sensors 32, 33, and 34, respectively, In the vicinity of the guide hole portions 15b, 16b and 17b of the corresponding L-shaped hole portions 15, 16 and 17, the pushing portions 32a, 33a and 34a protrude toward the guide hole portions 15b, 16b and 17b. It is supported by the front wall 11 of the head 10b.

  Thus, when the attachment PJb is mounted on the stepped portion 10c as described later, one of the mounting sensors 31, 32, 33, and 34 corresponds to the corresponding one of the pushing portions 31a, 32a, 33a, and 34a. Then, it is turned on by being pushed by a claw 113 (described later) of the attachment PJb to generate a detection signal. The detection signal can also be used to detect the completion of attachment PJb as will be described later.

  The control unit U includes a lamp driving circuit 40, an image processing circuit 50, a video signal input circuit 60, and a liquid crystal panel driving circuit 70 (hereinafter also referred to as an LCD driving circuit 70).

  The lamp driving circuit 40 drives the lamp 80 under the control of the microcomputer 20. The video signal input circuit 60 outputs video data from an external video device (not shown), converts it into a predetermined format, and inputs it to the image processing circuit 50. The lamp driving circuit 40 and the LCD driving circuit 70 together with the microcomputer 20 correspond to the image control means referred to in the present invention.

  The image processing circuit 50 performs image data processing such as A-D conversion on the video signal output from the video signal input circuit 60 in a predetermined signal format, based on a command from the CPU of the microcomputer 20, and the like to the LCD driving circuit 70. Output.

  The LCD drive circuit 70 drives the LCD 100 based on the image data processed output from the image processing circuit 50. The configurations of the video signal input circuit 60, the image processing circuit 50, the LCD drive circuit 70, and the like described above are merely examples, and a video signal output from an external video device is a control circuit such as a CPU of the microcomputer 20. It is needless to say that any configuration may be used as long as the signal is converted into a signal form that can drive the LCD 100 and that can respond to the commands from the above.

  The lamp 80 is driven to be lit by the lamp driving circuit 40 under the control of the CPU of the microcomputer 20 and emits light to the illumination optical system 90. The illumination optical system 90 collects the light emitted from the lamp 80 and emits it toward the LCD 100 as parallel light.

  The LCD 100 is of a transmissive type, and the LCD 100 is disposed on the display surface so as to face the outside through the opening 13 of the front wall 11 in the housing member 10. The LCD 100 transmits light emitted from the illumination optical system 90 in accordance with a drive signal output from the LCD drive circuit 70 based on an output obtained by processing the image data of the image processing circuit 50 at each display portion. By controlling the amount of light, the image data processed output of the image processing circuit 50 is emitted as video light. This means that the LCD 100 displays a video based on the image data processed output based on the video light. The LCD 100 corresponds to the display means referred to in the present invention.

  Next, the configuration of the attachment PJb will be described with reference to FIGS. 2 and 4 to 6 in relation to the configuration of the projector main body PJa.

  The attachment PJb includes a housing member 110 as shown in FIGS. 4 and 5. The housing member 110 has a rear wall 111 that comes into contact with the rear wall of the step portion 10c (the front wall 11 of the head portion 10b) when the housing member 110 is attached to the step portion 10c of the projector main body PJa. A circular opening 112 is formed at the center so as to face the display surface of the LCD 100 through the opening 13 of the front wall 11 of the head 10b.

  Further, the housing member 110 has four locking claws 113 to 116, and each of the claws 113 to 116 is the same circle around the opening 112 at the outer peripheral edge of the opening 112. Along the circumference, they are provided on the outer surface of the rear wall 111 so as to be positioned at equal angular intervals so as to correspond to the respective L-shaped hole portions 14 to 17 of the projector main body PJa.

  However, as shown in FIG. 5, each of the claws 113 to 116 protrudes from the rear wall 111 of the housing member 110 so as to correspond to any of the L-shaped holes 14 to 17. Yes.

  Specifically, as shown in FIG. 5, the claw 113 is shifted to the right side by the predetermined angle from the center line L3 of the opening 112 and protrudes from the rear wall 111 of the housing member 110. The portion 112 protrudes from the rear wall 111 of the housing member 110 so as to be shifted upward by the predetermined angle from the other center line L4 (center line orthogonal to the center line L3).

  Further, as shown in FIG. 5, the claw 115 is shifted to the left side by the predetermined angle from the center line L3 of the opening 112 and protrudes from the rear wall 111 of the housing member 110, and the claw 116 has an opening. The portion 112 protrudes from the rear wall 111 of the housing member 110 so as to be shifted downward from the other center line L4 by the predetermined angle.

  Here, the structure of each nail | claw 113-116 is demonstrated. As shown in FIG. 4, the claw 113 has a base 113a and a claw 113b. The base portion 113a is formed in the guide hole portions 14b to 17b of the L-shaped hole portions 14 to 17 with an outer shape that can be guided from the corresponding insertion hole portions 14a to 17a, and from the rear wall 111 of the housing member 110. It protrudes perpendicular to this.

  The claw portion 113b is formed to have an outer shape that can be inserted into the insertion hole portions 14a to 17a of the L-shaped hole portions 14 to 17 and cannot be inserted into the guide hole portions 14b to 17b. As can be seen from FIG. 5, the base portion 113a protrudes in an L shape in parallel with the rear wall 111 and along the radial direction of the opening 112.

  Here, the width of the claw 113 (the width along the circumferential direction of the opening 112) is the lateral width of the guide hole portion 14b of the L-shaped hole portion 14, the vertical width of the guide hole portion 15b of the L-shaped hole portion 15, It is equal to the horizontal width of the guide hole 16b of the L-shaped hole 16 and the vertical width of the guide hole 17b of the L-shaped hole 17.

  The remaining claws 114 have base portions 114a, 115a, 116a and pawl portions 114b, 115b, 116b, respectively. The base portions 114a, 115a, 116a are separated from the rear wall 111 of the housing member 110, respectively. Projecting vertically. Further, as can be seen from FIGS. 4 and 5, the claw portions 114 b, 115 b, 116 b are respectively parallel to the rear wall 111 from the front ends of the corresponding base portions 114 a, 115 a, 116 a and in the radial direction of the opening 112. It protrudes in an L shape along

  Here, each nail | claw 114-116 is the external shape which can be guided from the corresponding insertion hole part 14a-17a in the guide hole part 14b-17b of each L-shaped hole part 14-17 by the base part 114a-116a. It is formed with a shape.

  Further, the claws 114 to 116 can be inserted into the insertion hole portions 14a to 17a of the L-shaped hole portions 14 to 17 by the claw portions 114b to 116b, and cannot be inserted into the guide hole portions 14b to 17b. It is formed to have an outer shape.

  However, the width of each claw 114 to 116 (width along the circumferential direction of the opening 112) corresponds to half of the width of the claw 113 (width along the circumferential direction of the opening 112). Moreover, the axial length of the base parts 113a-116a of each nail | claw 113-116 is somewhat longer than the thickness of the rear wall 11 of the step part 10c. The rear wall 111 and the claws 113 to 116 of the housing member 110 correspond to the attachment side mounting portion according to the present invention. Moreover, the rear wall 111 and each nail | claw 113-116 respond | correspond to the form said to this invention with the front wall 11 and each L-shaped hole part 14-17 of the head 10b mentioned above.

  Further, the attachment PJb includes a reflection mirror (not shown) and an imaging optical system 120 (see FIGS. 1 and 6). When the attachment PJb is attached to the step portion 10c as described later, the reflection mirror is incident on the LCD 100 through the openings 13 and 112 and reflects the image light toward the imaging optical system 120. The imaging optical system 120 corresponds to the projecting unit in the present invention.

  The imaging optical system 120 is composed of a plurality of lenses, and this imaging optical system 120 is opposed to the outside through its projection port 117 of the housing member 110 at its exit side lens ( (See FIG. 1). Thus, when the attachment PJb is mounted on the projector main body PJa as described later, the imaging optical system 120 projects the reflected image light from the reflection mirror through the projection port 117, thereby displaying the display on the LCD 100. The image is projected onto the lower horizontal projection surface Sa, the upper horizontal projection surface Sb, the left vertical projection surface Sc, or the right vertical projection surface Sd. Note that the projection port 117 is formed in a front portion of the bottom wall of the housing member 110 (see FIG. 1).

In the first embodiment configured as described above, a case will be described in which the projector performs the above-described downward projection, upward projection, right projection, or left projection. However, it is assumed that the projector is erected on the upper surface of a desk (not shown), for example, in the projector main body PJa.
1. When performing the above-described downward projection with the projector As shown in FIG. 1, the attachment PJb is held by the projection port 117 so as to face downward, and the rear wall 111 (see FIG. 4) Press against the front wall 11 (rear wall of the stepped portion 10c) of the head 10b of the main body PJa.

  In such a state, the claws 113 to 116 are inserted from the claw portions 113b to 116b into the insertion hole portions 14a to 17a of the corresponding L-shaped hole portions 14 to 17, respectively. Thereafter, when the attachment PJb is rotated so as to be twisted in the clockwise direction shown in FIG. 1, the claws 113 to 116 are resisted by the elasticity of the corresponding lock springs 18a to 18d at the respective base portions 113a to 116a. These are guided into the corresponding guide holes 14b to 17b.

  Here, the claw 113 has the same width as the lateral width of the guide hole 16b, and the top of the lock spring 18c is located opposite to the boundary between the insertion hole 16a and the guide hole 16b. When 113 abuts on the left end portion in the guide hole portion 16b, the claw 113 is held between the top portion of the lock spring 18c and the left end portion in the guide hole portion 16b by the claw portion 113b.

  Further, the width of each of the remaining claws 114 to 116 is half of the width of the claws 113. Furthermore, the top of the lock spring 18a is located opposite to the boundary between the insertion hole 14a and the guide hole 14b, and the top of the lock spring 18b is located opposite to the boundary between the insertion hole 15a and the guide hole 15b, Further, the top of the lock spring 18d is positioned to face the boundary between the insertion hole 17a and the guide hole 17b.

  For this reason, when the claw 113 is sandwiched between the top of the lock spring 18c and the left end in the guide hole 16b as described above, the remaining claws 114 to 116 are respectively connected to the claw portions 114b to 116b. The lock springs 18a, 18b, and 18d of the corresponding lock springs are prevented from coming off.

  In this way, the attachment of the attachment PJb to the projector main body PJa is completed with the projection direction of the projector directed to the lower horizontal projection surface Sa. This means that the projector is in a state of performing the downward projection.

  When the attachment of the attachment PJb is completed as described above, the attachment sensor 33 is pushed by the claw portion 113b of the claw 113 at the pushing portion 33a and is turned on to generate a detection signal.

  Then, when the microcomputer 20 of the control unit U is activated by the detection signal, the completion of attachment of the attachment PJb is detected, and the microcomputer 20 receives the operation input of the operation panel P by the CPU. Various processes such as a process based on the input of the video signal from the video signal input circuit 60 and identification of the attachment form of the attachment PJb based on whether or not the detection signal of the mounting sensor 31, 32, 33 or 34 is generated. Do.

  Under the above processing, when the lamp 80 is driven by the lamp driving circuit 40, the lamp 80 is turned on and light is incident on the LCD 100 through the illumination optical system 90.

  Further, when the LCD 100 is driven by the LCD driving circuit 70 based on the image data processed output of the image processing circuit 50, the LCD 100 attaches the image as video light to the attachment PJb based on the incident light from the illumination optical system 90. It is emitted toward the reflection mirror. Accordingly, the image light is reflected by the reflection mirror and enters the imaging optical system 120.

  Then, the imaging optical system 120 projects the incident image light on the lower horizontal projection surface Sa through the projection port 117. This means that the projector performs the downward projection by projecting the display image of the LCD 100 onto the lower horizontal projection surface Sa.

  Here, when the mounting sensor 33 generates a detection signal as described above, the microcomputer 20 identifies the mounting form of the attachment PJb with respect to the projector main body PJa based on the detection signal from the mounting sensor 33 by the CPU. Process. Since the attachment form of the attachment PJb identified by this processing is the attachment form of the attachment PJb corresponding to the above-mentioned downward projection, the emitted light amount of the lamp 80 is a projection direction that defines the relationship between the projection direction and the light amount, which will be described later. -A predetermined low-intensity light amount is set based on the light amount data.

  In the first embodiment, the projection direction-light quantity data is introduced for the following reason. That is, as described above, when the attachment form of the identified attachment PJb is the attachment form of the attachment PJb corresponding to the downward projection, the projection is from the projection port 117 to the lower horizontal projection surface Sa. Projection distance to is short.

  For this reason, the brightness of the display image on the lower horizontal projection surface Sa has a sufficient margin and sometimes tends to be excessive. Therefore, it is desirable to reduce the brightness of the display image so that it can be easily seen. In addition, if the luminance is set to be low in this way, power consumption can be suppressed in an appropriate brightness.

  As will be described later, when the projector is in the above-mentioned upward projection, leftward projection, or rightward projection state, from the projection port 117 to the upper horizontal projection surface Sb, the left vertical projection surface Sc, or the right vertical projection surface Sd. Therefore, it is desirable to increase the brightness so that the luminance on the upper horizontal projection surface Sb, the left vertical projection surface Sc, and the right vertical projection surface Sd can be easily seen.

  Therefore, the projection direction-light quantity data is obtained by reducing the light quantity emitted from the lamp 80 to a predetermined low-luminance quantity when the projector is in the downward projection for the reason described above. When the projector is in the above-described upward projection, leftward projection, or rightward projection state, it is determined to increase the amount of light emitted from the lamp 80 to a predetermined high luminance light amount and is stored in advance in the ROM of the microcomputer 20.

  Accordingly, when the amount of light emitted from the lamp 80 is set to the predetermined low luminance light amount as described above, the lamp driving circuit 40 is controlled by the microcomputer 20 with its CPU, and the amount of light emitted from the lamp 80 is set to the predetermined amount. The lamp 80 is driven so as to obtain a low luminance light quantity.

For this reason, the amount of light emitted from the lamp 80 is reduced to the predetermined low-intensity light amount, and the luminance of light projected from the imaging optical system 120 onto the lower horizontal projection surface Sa is lowered. As a result, even if the projection distance from the projection port 117 of the attachment PJb to the lower horizontal projection surface Sa is short, the display image on the LCD 100 is projected on the lower horizontal projection surface Sa with low brightness, and the image becomes easy to see. At the same time, it helps to save power.
2. When performing the upward projection with the projector First, after rotating the attachment PJb mounted on the projector main body PJa as described above so as to twist counterclockwise in FIG. Is removed from the insertion hole portions 14a to 17a of the corresponding L-shaped hole portions 14 to 17, thereby removing the attachment PJb from the projector main body PJa.

  Thereafter, as shown in FIG. 1, the attachment PJb is gripped so as to face upward at the projection opening 117, and the front wall 11 (step 10c of the head 10b of the projector main body PJa is held by the rear wall 111. Against the rear wall).

  In such a state, when the claw 113 comes into contact with the left end of the guide hole 14b by guiding the claws 113 to 116 into the corresponding guide holes 14b to 17b in the same manner as described above. The claw 113 is clamped by the claw portion 113b between the top portion of the lock spring 18a and the left end portion in the guide hole portion 14b. Further, the remaining claws 114 to 116 are retained by the claw portions 114b to 116b by the tops of the corresponding lock springs 18b to 18d.

  In this way, the attachment of the attachment PJb to the projector main body PJa is completed with the projection direction of the projector directed to the upper horizontal projection surface Sb. This means that the projector is in a state of performing the upward projection.

  When the attachment of the attachment PJb is completed as described above, the attachment sensor 31 is pushed by the claw portion 113b of the claw 113 at the pushing portion 31a and is turned on to generate a detection signal.

  Based on the detection signal, the completion of attachment of the attachment PJb is detected under the operation of the microcomputer 20, and the process for the series of projections described above is performed. Through the projection on the upper horizontal projection plane Sb, the above-described upward projection is performed.

  Here, when the mounting sensor 31 generates a detection signal as described above, the microcomputer 20 uses the CPU to identify the mounting form of the attachment PJb with respect to the projector main body PJa based on the detection signal of the mounting sensor 31. I do. Since the attachment form identified by this process is the attachment form of the attachment PJb corresponding to the upward projection, therefore, the emitted light quantity of the lamp 80 is determined based on the projection direction-light quantity data described above. Set to the luminance light quantity.

  Along with this, the lamp driving circuit 40 is controlled by the microcomputer 20 to drive the lamp 80 so that the emitted light quantity of the lamp 80 becomes the predetermined high luminance light quantity.

  For this reason, the amount of light emitted from the lamp 80 is increased to the predetermined high luminance light amount, and the luminance of light emitted from the imaging optical system 120 onto the upper horizontal projection surface Sb is increased.

As a result, even if the projection distance between the projection port 117 of the attachment PJb and the upper horizontal projection surface Sb is long, the display image on the LCD 100 is projected on the upper horizontal projection surface Sb with high brightness, and becomes an easy-to-view image. .
3. When performing left projection with the projector After removing the attachment PJb from the projector main body PJa in the same manner as described above, the attachment PJb is directed leftward at the projection port 117 as shown in FIG. Grasping and pressing the back wall 111 against the front wall 11 of the head 10b of the projector main body PJa.

  In such a state, when the claws 113 are in contact with the upper ends of the guide holes 17b by guiding the claws 113 to 116 into the corresponding guide holes 14b to 17b in the same manner as described above. The claw 113 is clamped by the claw portion 113b between the top portion of the lock spring 18d and the upper end portion in the guide hole portion 17b. Further, the remaining claws 114 to 116 are retained by the claw portions 114b to 116b by the top portions of the corresponding lock springs 18a to 18c.

  In this way, the attachment of the attachment PJb to the projector main body PJa is completed with the projection direction of the projector directed to the left vertical projection plane Sc. This means that the projector is in a state where the left projection is performed.

  When the attachment of the attachment PJb is completed as described above, the attachment sensor 34 is pushed by the claw portion 113b of the claw 113 at the pushing portion 34a and is turned on to generate a detection signal.

  Then, based on the detection signal, the completion of attachment of the attachment PJb is detected under the operation of the microcomputer 20 described above, the processing for the series of projections described above is performed, and the image light is transmitted through the projection port 117. The left projection described above is performed by projecting on the left vertical projection plane Sc.

  Here, when the mounting sensor 34 generates a detection signal as described above, the microcomputer 20 uses the CPU to identify the mounting form of the attachment PJb with respect to the projector main body PJa based on the detection signal of the mounting sensor 34. I do. Since the attachment form identified by this processing is the attachment form of the attachment PJb corresponding to the left direction projection, therefore, the amount of light emitted from the lamp 80 is determined based on the above-described projection direction-light quantity data. Set to the luminance light quantity.

  Along with this, the lamp driving circuit 40 is controlled by the microcomputer 20 to drive the lamp 80 so that the emitted light quantity of the lamp 80 becomes the predetermined high luminance light quantity.

  Therefore, the amount of light emitted from the lamp 80 is increased to the predetermined high luminance light amount, and the luminance of light emitted from the imaging optical system 120 onto the left vertical projection surface Sc is increased.

As a result, even if the projection distance between the projection port 117 of the attachment PJb and the left vertical projection surface Sc is long, the display image on the LCD 100 is projected on the left vertical projection surface Sc with high brightness, and the image becomes easy to see. .
4). When performing the above-mentioned rightward projection with the projector After removing the attachment PJb from the projector main body PJa in the same manner as described above, the attachment PJb is gripped so as to face rightward at the projection port 117 as shown in FIG. Then, the rear wall 111 is pressed against the front wall 11 of the head 10b of the projector main body PJa.

  In such a state, when the claws 113 are in contact with the lower ends of the guide holes 15b by guiding the claws 113 to 116 into the corresponding guide holes 14b to 17b as described above, The claw 113 is clamped by the claw portion 113b between the top portion of the lock spring 18b and the lower end portion in the guide hole portion 15b. Further, the remaining claws 114 to 116 are retained by the claw portions 114b to 116b by the top portions of the corresponding lock springs 18a, 18c, and 18d.

  In this way, the attachment of the attachment PJb to the projector main body PJa is completed with the projection direction of the projector directed to the right vertical projection plane Sd. This means that the projector has been put into the right projection.

  When the attachment of the attachment PJb is completed as described above, the attachment sensor 32 is pushed by the claw portion 113b of the claw 113 at the pushing portion 32a and is turned on to generate a detection signal.

  Then, based on the detection signal, the completion of attachment of the attachment PJb is detected under the operation of the microcomputer 20 described above, the processing for the series of projections described above is performed, and the image light is transmitted through the projection port 117. By projecting onto the right vertical projection plane Sd, the above-described right direction projection is performed.

  Here, when the mounting sensor 32 generates a detection signal as described above, the microcomputer 20 uses the CPU to identify the mounting form of the attachment PJb with respect to the projector main body PJa based on the detection signal of the mounting sensor 32. I do. Since the attachment form identified by this processing is the attachment form of the attachment PJb corresponding to the rightward projection, the light quantity emitted from the lamp 80 is determined based on the projection direction-light quantity data described above. Set to the luminance light quantity.

  Along with this, the lamp driving circuit 40 is controlled by the microcomputer 20 to drive the lamp 80 so that the emitted light quantity of the lamp 80 becomes the predetermined high luminance light quantity.

  Therefore, the amount of light emitted from the lamp 80 is increased to the predetermined high luminance light amount, and the luminance of the light emitted from the imaging optical system 120 onto the right vertical projection surface Sd is increased. As a result, even if the projection distance between the projection port 117 of the attachment PJb and the right vertical projection plane Sd is long, the display image on the LCD 110 is projected onto the right vertical projection plane Sd with high brightness and becomes an easy-to-view image. .

  As described above, in addition to the projector main body PJa, the attachment PJb is employed, and the attachment PJb is mounted on the projector main body PJa so as to be adapted to a desired projection direction, thereby constituting the projector. did.

  As a result, the attachment PJb is adjusted to the position direction of the lower horizontal projection surface Sa, the upper horizontal projection surface Sb, the left vertical projection surface Sc, or the right vertical projection surface Sd without changing the position of the projector main body PJa. By mounting the projector body PJa as described above, the projector can be easily set to the above-described downward projection, upward projection, right projection, or left projection.

Further, the microcomputer 20 automatically controls the light quantity of the lamp 80 based on the detection signal of any of the mounting sensors 31 to 34. As a result, the light quantity of the lamp 80 is adjusted so as to bring about a sufficient brightness in the projection image suitable for the projection direction when the attachment PJb is attached to the projector main body PJa. As a result, even in the above-described downward projection, upward projection, leftward projection, or rightward projection, the projected image on the projection surface can be viewed with good brightness.
(Second Embodiment)
FIG. 7 shows a main part of the second embodiment of the present invention. In the second embodiment, the attachment PJc is adopted in place of the attachment PJb described in the first embodiment.

  This attachment PJc has a configuration in which only the claws 113 and 115 are left among the four claws 113 to 116 provided on the rear wall 111 in the attachment PJb described in the first embodiment. Other configurations are the same as those in the first embodiment.

  In the second embodiment configured as described above, as described above, the attachment PJc is configured to have only the claws 113 and 115 unlike the attachment PJb described in the first embodiment. Yes.

  Accordingly, the attachment structure of the attachment PJc to the projector body PJa is simpler than the attachment structure of the attachment PJb to the projector body PJa. Other functions and effects are substantially the same as those of the first embodiment.

In carrying out the present invention, the following various modifications are possible without being limited to the above embodiments.
(1) In each of the above embodiments, as described above, an example in which the projector performs the downward projection, the upward projection, the leftward projection, or the rightward projection has been described. However, the present invention is not limited to this. The attachment form (attachment configuration) of the attachment to the projector main body may be changed so as to perform the projection.
(2) In each of the above embodiments, when the attachment form of the attachment PJb to the projector body PJa is identified based on the detection signal of any of the attachment sensors 31 to 34, this fact is separately indicated on the projector body PJa. You may make it display on other provided LCD.

Thereby, even if the lighting of the lamp 80 is delayed, the correctness of the mounting form of the attachment PJb to the projector main body PJa can be quickly confirmed on the display of the other LCD. If the other LCD is provided on the upper wall of the housing 10, it is easy to confirm the correctness of the mounting form described above.
(3) Displaying the projection direction of the projector identified as described above on another separately provided LCD or displaying it by turning on an LED or the like, and various other notification means (in the information notification means in the present invention) (Correspondence) may be used for notification. Further, the projector may be turned on for the first time based on the generation of one detection signal from any of the mounting sensors 31 to 34.
(4) Instead of the projection direction-light quantity data, projection direction-projection magnification data may be employed. Here, the projection direction-projection magnification data is data representing the relationship between the projection direction of the projector of the identified mounting form and the projection magnification corresponding to the projection direction, and is stored in advance in the ROM of the microcomputer 20. In this case, the projection magnification determined based on the projection direction-projection magnification data may be displayed on another LCD that is separately employed. According to this, the projection magnification can be displayed quickly before the lamp 80 is turned on.
(5) The projector is not limited to that described in each of the above embodiments, and may be, for example, a hanging type that is suspended and fixed to the ceiling, or hooked on a surface substantially perpendicular to the floor, It may be a wall-mounted type that is used by being fixed.
(6) The mounting sensor is not limited to a mechanical switch, and may be an optical sensor, a magnetic sensor, or the like.

The attachment sensor is not essential, and the shape of the attachment and the color of the attachment may be devised so that the attachment direction of the attachment attached to the projector main body can be understood well. For example, only a specific side surface of the attachment may have a characteristic color or pattern.
(7) The attachment portion may be configured so that the attachment is simply inserted into the projector body and fixed so as to be inserted into the back. In this case, the attachment portion can be inserted in an arbitrary direction, so that it can be inserted in an arbitrary direction of the projection direction. Can be set.
(8) Unlike the above embodiment, the projector mounting portion may have a plurality of claws, and the attachment mounting portion may have a guide hole. The guide mounting hole of the attachment mounting portion It may be less than the number.
(9) As an attachment mounting portion, a convex stepped portion extending in the mounting direction is formed on a plurality of side surfaces, and a corresponding concave step is provided on the projector mounting portion so that the stepped portion can be inserted and fixed. The configuration may be such that it is slidably inserted along the stepped portion.

FIG. 5 is a perspective view illustrating an example in which attachment of the attachment to the projector main body is performed so that the projection direction is changed to any one of up, down, left, and right directions in the first embodiment of the projector according to the present invention. It is the figure which looked at the rear wall (front wall of a head) of the said step part when the attachment was mounted | worn with the step part of the projector main body of FIG. 1 from the inside of the said projector main body. It is the figure which looked at the front wall of the head of the projector main body of FIG. 1 from the inside of the said projector main body. It is a perspective view of the attachment of FIG. It is a rear view of the attachment of FIG. It is a block circuit diagram in the first embodiment. It is a perspective view which shows the principal part of 2nd Embodiment of this invention.

Explanation of symbols

PJa ... Projector body, PJb, PJc ... Attachment,
Sa ... Lower horizontal projection plane, Sb ... Upper horizontal projection plane, Sc ... Left vertical projection plane,
Sd ... right vertical projection plane, U ... control unit, 10 ... housing member, head ... 10b,
10c ... Stepped portion, 14-17 ... L-shaped hole portion, 14a-17a ... Insertion hole portion,
14b-17b ... guide hole, 18a-18d ... lock spring, 20 ... microcomputer,
31-34 ... Installation sensor, 31a-34a ... Pushing part, 40 ... Lamp drive circuit,
80 ... lamp, 113-116 ... nail, 113a-116a ... base,
113b-116b ... nail | claw part.

Claims (9)

In a projector comprising display means for displaying an image and projection means for optically projecting a display image from the display means,
A projector body incorporating at least the display means;
An attachment that incorporates at least a part of the projection means and is used by being attached to the projector body,
The attachment includes an attachment side mounting portion for mounting on the projector body,
The projector body includes a projector body side mounting portion to which the attachment is mounted corresponding to the attachment side mounting portion,
When the attachment is attached to the projector main body, there are at least two forms in which the attachment-side attachment part is attached to the projector main body-side attachment part, and the display image by the projection unit is optical according to each attachment form. A projector characterized in that the projection direction projected onto the screen is set differently. In a projector comprising display means for displaying an image and projection means for optically projecting a display image from the display means,
A projector body incorporating at least the display means;
An attachment containing at least a part of the projection means,
The attachment is provided with a mounting portion that is detachably attached to a mounting portion provided in the projector body,
The attachment mounting portion is configured together with the projector main body mounting portion so that the projection direction of the projection unit is set to one of a plurality of different projection directions when the attachment mounting portion is mounted on the projector main body mounting portion. The projector characterized by being made.   When attaching the attachment to the projector main body, the projection direction of the projection means is downward and upward depending on one of the at least two forms in which the attachment-side attachment portion is attached to the projector main body-side attachment portion. The projector according to claim 1, wherein the projector is set in at least one of the directions.   When the attachment is attached to the projector main body, the projection direction of the projection means is a horizontal direction according to any one of the at least two or more embodiments in which the attachment-side attachment portion is attached to the projector main body side attachment portion. The projector according to claim 1, wherein the projector is set as follows.   Attachment information detecting means for detecting at least one of identification information for identifying the mounting form and information relating to the attachment in the mounting form when the attachment is attached to the mounting part of the projector main body by the mounting part. The projector according to claim 1, 3, or 4.   The projector according to claim 5, further comprising an information notification unit configured to notify at least one of both the identification information and the information related to the attachment in the mounting form.   The image control means which controls the image displayed by the said display means based on at least one of both the said identification information and the information regarding the said attachment in the said mounting form, The image control means characterized by the above-mentioned. Projector.   The attachment with which the said projector main body with which the projector as described in any one of Claims 1-7 is equipped is detachably attached. The projector main body with which the projector as described in any one of Claims 1-7 is equipped.

Images