JP2007057742A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a projector whose manufacture cost is restrained to be low by providing a supporting means at a necessary spot when the projector is turned upside down and placed on furniture or a shelf positioned high, and which prevents the troublesomeness in the operation of the supporting means and the loss of the supporting means, because the supporting means need not be detached and replaced when switching a placing method. <P>SOLUTION: The projector equipped with an outside case 2 in which a projection optical system is housed is provided with the supporting means 5 at the rear part of the upper surface part 2c of the outside case 2 and the front part of the lower surface part 2d thereof respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a projector, and more specifically, when the projector is placed upside down on furniture, a high shelf, etc., the manufacturing cost can be low, and the troublesomeness and loss of operation of the support means can be avoided. The present invention relates to a support structure for preventing fear.

  The projector is placed by placing a table between the screen placed on the wall surface of the room and the observer, placing the table on the table, turning the projector upside down, and setting the tilt direction downward. There are three main methods: hanging the projector from the ceiling in a tilted position, and placing the projector upside down on a piece of furniture facing the screen installed on the wall surface of the room so that the tilt direction is downward. It has been separated.

  In the method of placing on the table, if there is furniture on the wall facing the screen, the projection distance from the projector to the screen may not be sufficiently secured. In the method of hanging from the ceiling, the ceiling Installation work of the base material and mounting bracket for mounting the projector on the back is necessary, and as a method of easily placing it without worrying about the projection distance and installation work, the method of placing it on the furniture upside down is noticed Has been.

  On the other hand, when the projection distance can be sufficiently secured, the method of placing on the table is sufficient, so there is no need to hang from the ceiling, and the method of placing on the table and the furniture. It is required to be able to easily switch to the method of placing it upside down.

  In the conventional projector of this type, support means can be attached to and detached from a plurality of attachment holes on the first support surface and the second support surface of the exterior case, and the support means can be screwed into the attachment holes on one support surface. When the projector is mounted upside down by closing the mounting hole on the other support surface with a lid member, the mounting work is not required (see, for example, Patent Document 1).

  In the projector, as shown in FIG. 10 of Patent Document 1, the exterior case has a first support surface on the side in the tilt direction with respect to the optical axis of the projection optical system, and the light of the projection optical system A second support surface is provided on the side opposite to the tilting direction with respect to the shaft, and support means for projecting from the support surfaces and supporting the exterior case can be attached to and detached from the first support surface and the second support surface, respectively. A mounting hole is formed, the support means is screwed into the mounting hole on one of the first support surface or the second support surface, and the other mounting hole is closed with a lid member. ing.

  Specifically, the projector modulates a light beam emitted from a light source according to image information to form an optical image, and enlarges and projects the optical image formed by the light modulation device. A projection optical system, and an exterior case that houses the light modulation device and the projection optical system, and the projection optical system is arranged such that its optical axis is deviated from the central axis of the projection area. As shown in FIG. 10 of Patent Document 1, the upper surface portion 210 of the outer case 2 is provided with a female screw on the inner peripheral surface at the center position on the front side and both corners on the rear side. Through holes 218 as attachment holes are formed, and recesses 219 are formed on the upper surface portion 210 side of each through hole 218.

  Further, the lower surface portion 250 of the outer case 2 is formed with through holes 258 as attachment holes in which female threads are engraved on the inner peripheral surface at positions opposed to the respective through holes 218. Concave portions 259 are respectively formed on the lower surface portion 250 side of the holes 258.

  The support means 65 includes a disk-shaped support part 651 and a shaft part 652 extending perpendicularly to the support part 651 and having an external thread engraved on the outer peripheral surface. Each support means 65 is composed of a shaft part 652. By screwing into the through-hole 218 and the through-hole 258, it protrudes from the upper surface portion 210 and the lower surface portion 250 and is detachable, and each support means 65 shown in FIG. 10 is attached to the through-hole 218. .

  The lid member 66 includes a disk-like lid portion 661 having substantially the same shape as the support means 65 and a shaft portion 662 extending perpendicularly from the lid portion 661, and is integrally made of an elastic material such as rubber or synthetic resin. Is formed. The lid member 66 closes the through hole 218 and the through hole 258, and the shaft portion 662 can be fitted into the through hole 218 and the through hole 258, and the lid portion 661 can be fitted into the concave portion 219 and the concave portion 259, respectively. Each lid member 66 shown in FIG. 10 is attached to the through hole 258.

  Therefore, according to the projector according to Patent Document 1, since the support means 65 is attached to the through hole 218 of the upper surface portion 210 and protrudes from the upper surface portion 210, the projector is placed on the furniture with the upper surface portion 210 as the lower side. Even if it is placed on, the outer case 2 can be supported by the support means 65, and it is not suspended from the ceiling, so that no installation work is required.

JP 2004-085726 A (pages 13 to 14 and FIG. 10)

  However, according to the projector according to Patent Document 1, when the placement method is switched according to the indoor environment to place the projector on the furniture or on the table, the upper surface portion 210 and the lower surface portion Since the support means 65 and the lid member 66 attached to both the central position on the front side and the rear corners of the 250 must be removed and replaced, the operation of the support means 65 and the lid member 66 must be performed. There is a problem that there is a risk of annoyance and loss.

  This problem can be solved by using a support structure that switches the mounting method without replacing the support means 65. For example, as shown in FIG. The supporting means 617 of the lower surface portion 250 is not protruded by projecting 617, and conversely, the supporting means 617 of the lower surface portion 250 is projected without projecting the supporting means 617 of the upper surface portion 210. If the support structure incorporating the mechanism is used, a complicated structure is required at the front center portion and the rear corner portions of the upper surface portion 210 and the lower surface portion 250, as described above, and the manufacturing cost is reduced. There was a problem of increasing.

  In view of the above-mentioned problems, the present invention provides a supporting means at a necessary place to reduce the manufacturing cost when placing the projector upside down on furniture, a high shelf, etc. It is an object of the present invention to provide a support structure for a projector that does not require the support means to be removed and replaced when switching, and can prevent troublesomeness of operation of the support means and the risk of loss.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a projector including an exterior case that accommodates a projection optical system, and is supported by a rear portion of the upper surface of the exterior case and a front portion of the lower surface, respectively. It is the structure characterized by providing the means.

  The invention according to claim 2 is a projector including an exterior case that accommodates the projection optical system, wherein support means are provided on the rear and front sides of the both sides of the exterior case, respectively, and the rear support means is on the upper side. In addition to projecting, the front support means projects downward.

  According to a third aspect of the present invention, in the second aspect of the present invention, a storage portion for storing the support means is provided on both side surfaces of the exterior case.

  According to a fourth aspect of the present invention, there is provided a projector provided with an exterior case that accommodates the projection optical system, wherein the support case is rotatably supported on both side surfaces of the exterior case. By providing means, and rotating the support means, the support part protrudes upward from the rear part of the both side surfaces, or the support part protrudes downward from the front part of the both side surfaces. It has a configuration characterized in that it can be switched.

  According to the present invention of claim 1, claim 2 or claim 4, the rear part of the upper surface of the outer case and the front part of the lower surface, or the rear part of both side surfaces of the outer case, and the front part, Since each support means is provided, there is no need to remove and replace the support means when switching the mounting method as in the above-mentioned Patent Document 1, thus preventing the troublesomeness of operation of the support means and the risk of loss. can do. In addition, according to the present invention, since the supporting means is provided only in the necessary portions, as in Patent Document 1, the center positions on the front side and the rear corners of the upper surface portion and the lower surface portion, respectively. In addition, since no support means is provided, the manufacturing cost can be kept low. Furthermore, according to the present invention described in claim 1, as compared with a mechanism incorporating a support means for switching the mounting method without replacing the support means as in Patent Document 1, the support means is provided only at necessary portions. By providing and having a simple structure, the manufacturing cost can be kept low.

  According to the third aspect of the present invention, since the storage portions for storing the support means are provided on both side surfaces of the exterior case, the support means can be stored and is not used depending on the mounting method. By housing the support means, the appearance can be kept good.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings. 1A and 1B are diagrams schematically showing a first embodiment of a projector according to the present invention, in which FIG. 1A is a perspective view, FIG. 1B is a side view, and FIG. 1C is a cross-sectional view when the tilt function of the supporting means is not used. D) is a sectional view when using the tilt function of the support means, FIG. 2 is a view showing a state where the projector according to the present invention is placed, (A) is a view showing a state where it is placed on a table, and (B) is a high shelf. FIG. 3 is a diagram schematically showing a modification of the first embodiment of the projector according to the present invention, (A) is a perspective view, and (B) is when the tilt function of the support means is not used. FIG. 4C is a sectional view when the tilt function of the support means is used, FIG. 4 is a diagram schematically showing a second embodiment of the projector according to the invention, FIG. 4A is a perspective view, and FIG. (C) is a cross-sectional view when the tilt function of the support means is not used. (D) is a cross-section when the tilt function of the support means is used. , 5 Figure in (A) are cross-sectional views for explaining a storage function of the support means in FIG. 4 is a sectional view of the a-a 'arrow (B) in (A).

  6A and 6B are diagrams schematically showing a modification of the second embodiment of the projector according to the present invention. FIG. 6A is a perspective view in which an auxiliary support portion is provided in an exterior case, and FIG. 6B is a view in which the auxiliary support portion is provided in a support means. FIG. 7 is a diagram schematically showing a third embodiment of the projector according to the present invention, FIG. 7A is a perspective view, and FIG. 7B is a side view showing the state of the support means when placed on a table, (C) is a side view showing the state of the support means when placed on a shelf in a high place, FIG. 8 is a sectional view of the support means in FIG. 7, and (A) is when the tilt function of the support means is not used. FIG. 9B is a sectional view of the supporting means when the tilt function is used, FIG. 9C is a sectional view showing the holding function of the supporting means, and FIG. 9 is a sectional view of another example of the supporting means in FIG. A) is a cross-sectional view showing a rotating portion of the support means, and (B) is a cross-sectional view showing a holding state of a holding function of the support means. (C) is a sectional view showing the open state of the holding function of the support means.

  The projector according to the present invention is a projector including an exterior case that accommodates the projection optical system, and is characterized in that support means are provided at the rear part of the upper surface of the exterior case and the front part of the lower surface, respectively. It is.

  Further, the projector according to the present invention is a projector including an exterior case that accommodates the projection optical system, and is provided with support means on each of the rear and front sides of the exterior case, with the rear support means on the upper side. In addition to projecting, the support means at the front projects from the lower side.

  Furthermore, the projector according to the present invention is a projector including an exterior case that accommodates the projection optical system, and is supported by pivotally supporting column portions having support portions at both ends on both side surfaces of the exterior case. By providing means, and rotating the support means, the support part protrudes upward from the rear part of the both side surfaces, or the support part protrudes downward from the front part of the both side surfaces. This is characterized in that it can be switched.

  A first embodiment of a projector according to the present invention will be described with reference to FIGS. As shown in FIGS. 1 (A) and 1 (B), the projector 1 includes an exterior case 2, a projection lens 3, a display unit 4, a support means 5, and an auxiliary support unit 6. The outer case 2 is placed on a placing surface such as a table or a high shelf via the support means 5 and the auxiliary support portion 6.

  The outer case 2 is formed in a square shape. The projection lens 3 projects from the front side of the outer case 2. The display unit 4 is configured by an LED or the like on the other side of the front surface of the exterior case 2. The support means 5 is provided so as to protrude from the rear part of the upper surface part 2c of the outer case 2 and the front part of the lower surface part 2d. The auxiliary support portion 6 protrudes from both sides of the front portion of the upper surface portion 2c of the outer case 2 and both sides of the rear portion of the lower surface portion 2d.

  Although not shown, the exterior case 2 is formed by a light modulation device that modulates a light beam emitted from a light source according to image information to form an optical image, and the light modulation device. A projection optical system for enlarging and projecting an optical image is accommodated. The projection optical system is arranged such that its optical axis is in the direction of the center axis of the projection area. Further, as shown in FIGS. 1C and 1D, a rear portion of the upper surface portion 2c of the outer case 2 has a housing portion 2g for housing the support means 5, and an inner portion of the housing portion 2g. From the bottom portion, an insertion hole 2a is formed as an attachment hole in which an internal thread is engraved on the inner peripheral surface. A recess 2b is formed in the insertion hole 2a on the inner side of the outer case 2, that is, on the opposite side from the upper surface portion 2c. Similarly, the housing portion 2g and the insertion hole 2a are also formed in the front portion of the lower surface portion 2d of the exterior case 2.

  As shown in FIGS. 1A, 1C, and 1D, the support means 5 includes a support portion 5a, a support shaft 5b, a male screw portion 5c, an E-ring 5d, and a recess 5e. It consists of and. The support part 5a is formed in a disc shape and has a function of a leg part in contact with the mounting surface. The leg part is formed with an impact buffer having elasticity such as rubber or synthetic resin and an anti-slip material. ing. The support shaft 5b extends vertically from the center of the support portion 5a. The male screw portion 5c is engraved on the outer peripheral surface of the support shaft 5b. The E-ring 5d is fitted on the upper end of the male screw portion 5c for retaining. The concave portion 5e is formed in a portion in contact with the mounting surface of the support portion 5a, and rotates the support portion 5a. The support portion 5a is protruded from the storage portion 2g, or the storage portion It can be accommodated in 2 g.

  The supporting means 5 for supporting the outer case 2 is screwed into the insertion hole 2a of the outer case 2 by the male screw portion 5c of the supporting means 5, and the supporting means 5 is engaged with the recess 2b of the outer case 2. The E-ring 5d can be accommodated, the projection angle can be adjusted by rotating the support means 5, and even if the support means 5 is rotated too much, it can fall off by the E-ring 5d. There is no such thing. The support means on the placement surface side according to the method of placing on a table or placing on a high shelf or the like by rotating the recess 5e of the support means 5 with a finger or the like. The support portion 5a of 5 is projected from the inside of the housing portion 2g, and the support portion 5a of the support means 5 on the side opposite to the mounting surface can be housed in the housing portion 2g.

  The support means 5 shown in FIGS. 1 (A) and 1 (B) can project from the rear portion of the upper surface portion 2c of the outer case 2 and the front portion of the lower surface portion 2d. However, as shown in FIG. 2A, when the projector 1 is placed on the table 9 disposed in the room 7, the optical axis of the projector 1 is in the direction of the center axis of the projection area. The projection optical system disposed so as to be displaced is accommodated, and the projection information is projected on the screen 8 installed on the wall in a state where the projection area is shifted upward from the beginning. There is almost no adjustment of the area downward, and as a minimum necessary part, it is possible to project one place at the front part of the lower surface part 2d.

  In addition, as shown in FIG. 2B, when the projector 1 is placed on a high shelf 10 such as a chiffon or a bookshelf arranged in the room 7, the projector 1 is placed upside down. As shown in the figure, the tilt direction is shifted downward from the beginning so that the video information is projected onto the screen 8 so that the projection area can be adjusted upward. There is almost nothing, and as a minimum necessary part, it is possible to project one place at the rear part of the upper surface part 2c. Note that four sets of the support means 5 and the insertion hole 2a may be protruded from both corners of the rear portion of the upper surface portion 2c and both corners of the front portion of the lower surface portion 2d.

  According to the first embodiment described so far, the concave portion 5e is provided in the support portion 5a. However, the present invention is not limited to this, and is shown in FIGS. 3 (A) to 3 (C). As shown, the recessed portion 5e may not be provided by forming the housing portion 2g ′ in which the front surface and the rear surface of the outer case 2 are opened. In this case, since the support portion 5a of the support means 5 is exposed from the open portion of the side surface of the housing portion 2g ′, the projection angle can be adjusted by touching and rotating the exposed portion. In the same manner as in the first embodiment, the support portion 5a can be accommodated. When the support means 5 is provided at both corners, the side surface of the outer case 2 may be opened.

  Further, in the embodiments described so far, the outer case 2 is provided with the accommodating portion 2g, and the outer appearance is taken into consideration so that the supporting portion 5a of the supporting means 5 that is not used depending on the mounting method is not projected. However, the present invention is not limited to this, and the housing portion 2g is not necessarily provided.

  According to Example 1 described so far, since the support means 5 that protrudes from the rear part of the upper surface of the exterior case 2 and the front part of the lower surface are provided, respectively, as in Patent Document 1, Since it is not necessary to remove and replace the support means when switching the mounting method, it is possible to prevent the troublesomeness of the operation of the support means and the risk of loss, and the support means 5 is provided only where necessary. Since it did in this way, like the said patent document 1, since the support means is not provided in the center part of each front side of each of an upper surface part and a lower surface part, and both corners of a rear side, manufacturing cost can be held down inexpensively. Can do. Furthermore, since the support means 5 is provided only in a necessary portion as compared with a mechanism incorporating a support means for switching the mounting method without changing the support means as in the above-mentioned Patent Document 1, the structure is simple. can do.

  Next, a second embodiment of the projector according to the present invention will be described with reference to FIG. The same components described in FIG. 1 are denoted by the same reference numerals used in FIG. 4A and 4B, the projector 1 includes an exterior case 2, a projection lens 3, a display unit 4, a support unit 11, and an auxiliary support unit 6. The outer case 2 is placed on a table or a placement surface such as a high shelf via the support means 11 and the auxiliary support portion 6.

  Since the projection lens 3, the display unit 4, and the auxiliary support unit 6 are the same components described in the first embodiment, description thereof will be omitted here, and the exterior case 2 and the support unit 11 will be omitted. Will be described. As in the first embodiment, the exterior case 2 houses a light modulation device and a projection optical system, and the projection optical system is arranged such that its optical axis is offset from the central axis of the projection area. 4 (A) and 4 (B), the support means 11 includes a rear portion of both side portions 2e (hereinafter referred to as both side surfaces) of the outer case 2, and a front portion. 4A and 4B, a front storage portion 2ha and a rear storage portion 2hb for storing the support means 11 are provided on both side surfaces of the exterior case 2, respectively. The state which accommodated the said support means 11 in the side accommodating part 2hb is shown.

  As shown in FIGS. 4A to 4D, the support means 11 includes a support portion 11a, a support shaft 11b, a main shaft 11c, a male screw portion 11d, and an E ring 11e. . The support portion 11a is formed in a disc shape, and has a function of a leg portion in contact with the placement surface. The leg portion is formed with an impact buffer having elasticity such as rubber or synthetic resin, and an anti-slip material is formed. ing. The support shaft 11b extends vertically from the center of the support portion 11a. The main shaft 11c constitutes a support column extending from the front storage portion 2ha and the rear storage portion 2hb on the both side surfaces of the exterior case 2, and an insertion hole 11ca through which the support shaft 11b is inserted into one end of the support column. A rotation mechanism for housing the support means 11 is formed at the other end of the support column inside the front storage portion 2ha and the rear storage portion 2hb. Further, a recess 11cb is formed on the end surface of the insertion hole 11ca. The male screw portion 11d is engraved on the outer peripheral surface of the support shaft 11b. The E-ring 11e is fitted on the upper end of the male screw portion 11d for retaining.

  As shown in FIGS. 5 (A) and 5 (B), the rotation mechanism at the other end of the column that constitutes the main shaft 11c penetrates from the bottom of the front housing portion 2ha of the exterior case 2 toward the inside. A protruding portion 11 cc for holding the support means 11 in a use state or a storage state is formed with respect to the guide hole 2 i to be formed. The guide hole 2i includes a first guide groove 2ia, a first holding hole 2ib, a second guide groove 2ic, and a second holding hole 2id. The protruding portion 11cc has a holding piece 11cd and a spring 11ce. It has.

  The protruding portion 11cc is a cylindrical concave portion with an open tip, and the holding piece 11cd is located at the tip of the protruding portion 11cc. The spring 11ce is connected to the holding piece 11cd in the recess of the protrusion 11cc, and the holding piece 11 is positioned at the tip of the protrusion 11cc or retracted into the recess.

  The first guide groove 2ia is formed horizontally from left to right on the inner surface of the guide hole 2i. The first holding hole 2ib is formed in a terminal portion at the back of the first guide groove 2ia, and serves as a hole to which the holding piece 11cd is fitted and held. The second guide groove 2ic is formed in the inner periphery of the guide hole 2i from the rear end portion of the first guide groove 2ia, and is further formed vertically from the upper and lower sides of the inner surface of the guide hole 2i. . The second holding hole 2id is formed at the end portion at the back of the second guide groove 2ic, and is a hole to which the holding piece 11cd is fitted and held.

  FIG. 5 shows that the supporting means 11 is held in use, and the projecting portion 11cc of the main shaft 11c is moved to the rear end portion of the first guide groove 2ia, and the first holding hole 2ib The holding piece 11cd is held. Note that the holding piece 11cd provided in the protruding portion 11cc is retracted into the recess while moving in the first guide groove 2ia, and at the position of the first holding hole 2ib, It jumps out to the tip and is fitted into the first holding hole 2ib. Further, in order to hold the support means 11 in the retracted state, the protruding portion 11cc of the main shaft 11 is moved to the rear end portion of the second guide groove 2ic, and the holding piece 11cd is received in the second holding hole 2id. Hold. The movement of the second guide groove 2ic of the holding piece 11cd provided in the protruding portion 11cc is rotated 90 degrees in the circumferential direction and then moved to the rear end portion. The holding piece 11cd is retracted into the recess while moving in the second guide groove 2ic, and jumps to the tip of the protruding portion 11cc at the position of the second holding hole 2id. It is fitted in the holding hole 2id.

  In FIG. 5, the example in which the support means 11 is held in the use state or the storage state in the front storage portion 2ha of the exterior case 2 has been described. However, the support means 11 in the rear storage portion 2hb is described. 5B, the inner circumference of the guide hole 2i from the rear end portion of the first guide groove 2ia in the second guide groove 2ic, as shown in FIG. The second guide groove 2 ic is formed so that the portion formed on the left and right sides of the drawing is reversed, thereby utilizing the rotation mechanism of the protruding portion 11 cc of the main shaft 11 c to support the support means 11. Can be held in a used state or a stored state.

  The support means 11 that supports the outer case 2 is configured to be screwed into the insertion hole 11ca of the main shaft 11c by the male screw portion 11d, and the E-ring 11e is accommodated in the recess 11cb of the insertion hole 11ca. As in the first embodiment, the projection angle can be adjusted by rotating the support means 11 so that the E-ring 11e does not fall off even if the support means 11 is rotated too much. It has become. In the projector 1 according to the second embodiment described so far, as in the first embodiment, as shown in FIGS. 2A and 2B, the table disposed in the room 7 is used. This can be applied to the case where the projector 1 is placed on the top 9 or the case where the projector 1 is placed on the high shelf 10 disposed in the room 7. As shown in FIG. 4A and FIG. 4B, the support means 11 on the front storage portion 2ha of the outer case 2 protrudes below the outer case 2 so that the outer case 2 2, when the support means 11 of the rear storage portion 2hb is stored in the rear storage portion 2hb, the projector 1 can be placed on the table 9, and the outer case 2 The support means 11 on the front storage part 2ha is stored in the front storage part 2ha, and the support means 11 on the rear storage part 2hb of the exterior case 2 is projected to the upper side of the exterior case 2. When the projector 1 is turned upside down, the projector 1 can be placed on the high shelf 10.

  Moreover, in Example 2 demonstrated so far, the said front side accommodating part 2ha and the said rear side accommodating part 2hb which accommodate the said support means 11 are provided in the both sides | surfaces of the said exterior case 2, and the said support means 11 is described above. Although the external appearance is considered so as to be able to be stored inward from both side surfaces and not to project the support means 11 that is not used depending on the mounting method, the present invention is not limited to this. As shown to (A), while providing the said support means 11 in the rear part of the both sides | surfaces of the said exterior case 2, respectively, and the front part, the said support means 11 of a rear part protrudes upwards, and the said support means of a front part 11 may protrude from the lower side. 4 and 6A, the auxiliary support portions 6 protrude from both sides of the front portion of the upper surface portion 2c of the outer case 2 and both sides of the rear portion of the lower surface portion 2d. The present invention is not limited to this, and as shown in FIG. 6B, the auxiliary support portion 6a is integrally formed in the direction opposite to the extending direction of the support shaft of the main shaft 11c of the support means 11. Thus, the support means 11 may have the same function as the auxiliary support portion 6 of FIG.

  According to the second embodiment that has been described so far, like the first embodiment, the support means 11 is provided on the rear part and the front part of both side surfaces of the outer case 2, respectively, and the support means 11 on the rear part is located on the upper side. And the support means 11 at the front part projects downward, so that troublesome operation of the support means and the risk of loss can be prevented. Since it is provided only at a necessary location, the manufacturing cost can be reduced.

  Next, a third embodiment of the projector according to the present invention will be described with reference to FIGS. The same components described in FIG. 1 are denoted by the same reference numerals used in FIG. As shown in FIGS. 7A to 7C, the projector 1 includes an exterior case 2, a projection lens 3, a display unit 4, a support unit 12, and an auxiliary support unit 6. The outer case 2 is placed on a placing surface such as a table or a high shelf via the support means 12 and the auxiliary support portion 6.

  The projection lens 3, the display unit 4, and the auxiliary support unit 6 are the same components described in the first embodiment. Therefore, the description thereof is omitted here, and the exterior case 2 and the support unit 12 are omitted. Will be described. As in the first embodiment, the exterior case 2 houses a light modulation device and a projection optical system, and the projection optical system is arranged such that its optical axis is offset from the central axis of the projection area. As shown in FIGS. 7 (A) to 7 (C), the support means 12 is supported at the end portions on both side surface portions 2e (hereinafter referred to as both side surfaces) of the exterior case 2. The support portion is provided so as to be rotatable, and by rotating the support means 12, the support portion protrudes upward from the rear portion of the both side surfaces, or the support portion is Whether to project from the front part of the both side surfaces to the lower side can be switched.

  As shown in FIGS. 7 to 9, the support means 12 includes a support portion 12a, a support shaft 12b, a holding portion 12c, a rotating portion 12d, a support column portion 12e, a support male screw portion 12g, and a support. And an E-ring 12h. The support portion 12a is formed in a disc shape and has a function of a leg portion in contact with the mounting surface. The leg portion is provided with an impact buffer having elasticity such as rubber or synthetic resin, and an anti-slip material. ing. The support shaft 12b extends vertically from the center of the support portion 12a. The holding portion 12c holds the position of the support portion 12e of the support means 12 according to the mounting surface, and includes a holding shaft 12ca extending vertically from the center of the knob and the opposite direction from the knob. On the side closer to the end of the holding shaft 12ca, the holding male screw portion 12cb engraved on the outer peripheral surface, and the holding shaft 12ca portion between the holding male screw portion 12cb and the knob are provided for retaining. And a holding E-ring 12cc. The rotating part 12d is provided in the central part of the both side surfaces of the outer case 2, and the column part 12e described later is rotatably attached thereto. The support column 12e is formed in an elastic rod shape, and the position of the support unit 12a is manually operated on both sides of the rotating unit 12d, for example, in a position symmetrical with respect to the rotating unit 12d. A handle 12ea is provided for making the position variable.

  Further, a holding insertion hole 12eb as a holding hole corresponding to the holding shaft 12ca of the holding portion 12c and the both side surfaces of the outer case 2 between one end of the support column 12e and the handle 12ea. A holding recess 12ec is formed toward the end. The holding E-ring 12cc is located in the holding recess 12ec.

  The supporting male screw portion 12g is engraved on the outer peripheral surface of the supporting shaft 12b. The supporting E-ring 12h is fitted on the upper end of the supporting male screw portion 12g for retaining. Furthermore, a support insertion hole 12ed as an attachment hole in which an internal thread is engraved on the inner peripheral surface corresponding to the support shaft 12b is formed at the other end of the support column 12e, and the support insertion hole 12 ed is formed with a supporting recess 12 ee in a direction parallel to the both side surfaces of the outer case 2, that is, upward and downward.

  Further, as shown in FIG. 8C, the outer case 2 has an inner peripheral surface corresponding to the holding shaft 12ca of the holding portion 12c at the front and rear portions of the both side surfaces of the outer case 2, respectively. A holding hole 2f in which a female screw is engraved is formed. In the holding hole 2f, a convex portion 2fa is formed so as to protrude from the both side surfaces of the outer case 2 and engage with the holding concave portion 12ec.

  The support means 12 for supporting the outer case 2 is screwed into the holding hole 2f of the outer case 2 by the holding male screw portion 12cb of the holding portion 12c, and the holding concave portion 12ec of the column portion 12e. The holding E-ring 12cc of the holding portion 12c is accommodated, and the convex portion 2fa of the outer case 2 engages with the holding concave portion 12ec on the holding E-ring 12cc, The support means 12 is held on both side surfaces of the case 2.

  The support portion 12a is screwed into the support insertion hole 12ed of the support portion 12e by the support male screw portion 12g of the support portion 12a, and the support portion 12a of the support portion 12a is engaged with the support recess portion 12ee. The support E ring 12h is configured to be accommodated, and the projection angle can be adjusted by rotating the support portion 12a. Even if the support portion 12a is rotated too much, the support E ring 12h It is designed not to fall out.

  In the projector 1 according to the third embodiment described so far, as in the first embodiment, as shown in FIGS. 2A and 2B, the table disposed in the room 7 is used. This can be applied to the case where the projector 1 is placed on the top 9 or the case where the projector 1 is placed on the high shelf 10 disposed in the room 7. As shown in FIGS. 7B and 7C, when the projector 1 is placed on the table 9, the support portion 12e is moved by the handle 12ea, and the rotating portion 12d is moved. The holding part 12c is rotated so that the position of the support part 12a is on the front side of the outer case 2 at the center, and the holding part 12c is floated on the holding hole 2f by the elastic action of the column part 12e. It can be used by aligning the portion 12c with the holding hole 2f and holding it as described above. Further, when the projector 1 is placed on the high shelf 10, the support 12 a is positioned on the rear surface of the exterior case 2 with the support 12 a centered on the rotating portion 12 d by the handle 12 ea. The holding part 12c is made to coincide with the holding hole 2f while holding the holding part 12c on the holding hole 2f by the elastic action of the support post part 12e, and held as described above. The projector 1 can be used by turning it upside down.

  Further, the handle 12ea is also used as a handle for carrying the projector 1, and either the method of placing on the table 9 or the method of placing on the high shelf 10 is used. Even if is adopted, since the carrying handle is located on the ceiling side of the projector 1, the convenience of carrying is improved.

  In the third embodiment described so far, the support portion 12a is positioned on the front side or the rear side of the outer case 2 with the support 12ea centered on the rotating portion 12d by the handle 12ea. The holding portion 12c is made to coincide with and hold the holding hole 2f while floating the holding portion 12c on the holding hole 2f by the elastic action of the support post portion 12e. The invention is not limited to this, and the support column 12e may not have an elastic action. In this case, as shown in FIG. 9 (A), the same structure as the holding function of the support means shown in FIG. 8 (C) is applied as the structure of the turning function of the turning part 12d ′ instead of the turning part 12d. 9 (B) and 9 (C), the structure of the holding insertion hole 12eb shown in FIG. 8 (C) is used as the structure of the holding function of the support means. This can be realized by making the structure into a holding insertion hole 12eb 'in which is engraved and not having the holding E-ring 12cc.

  As shown in FIG. 9A, the structure of the rotation function is such that the rotation portion 12d ′ includes a rotation shaft 12da ′, a rotation male screw portion 12db ′, a rotation E-ring 12dc ′, and a column portion. 12e, a rotation insertion hole 12dd ′, and a rotation recess 12de ′. The exterior case 2 includes a rotation hole 2f ′ and a rotation protrusion 2fa ′. Since these structures are the same as those shown in FIG. 8C, detailed description thereof will be omitted and only the operation will be described.

  First, in the rotating portion 12d ', the rotating male screw portion 12db' is rotated halfway through the rotating hole 2f '. On the other hand, in the holding portion 12c, the holding male screw portion 12cb is rotated halfway through the holding insertion hole 12eb '. By setting these states, in the rotating portion 12d ′, the supporting column portion 12e is positioned away from both side surfaces of the exterior case 2. Therefore, the supporting column portion 12e is moved around the rotating shaft 12da ′. You can rotate.

  In the holding part 12c, the fitting of the holding hole 2f with the convex part 2fa is released from the holding concave part 12ec of the post part 12e, and the post part 12e is opened from the both side surfaces of the outer case 2 Since it is a distant position, by operating the handle 12ea, the position of the support portion 11a protrudes upward from the rear portion of the both side surfaces of the exterior case 2 around the rotation shaft 12da ′, Whether to project from the front part of the both side surfaces to the lower side can be switched.

  According to the third embodiment described so far, similar to the first embodiment, the exterior case 2 protrudes upward from the rear part of the both side surfaces or from the front part of the both side surfaces to the lower side. Since the support means 12 that can switch whether to project is provided, it is possible to prevent troublesome operation of the support means and the risk of loss, and the support means 12 is provided at a necessary place. As a result, the manufacturing cost can be kept low.

  In the first to third embodiments described above, the support means 5, 11, and 12 are provided with a tilt function so that the projection angle can be adjusted. However, the present invention is not limited to this, and support means having no tilt function may be used, and a simple configuration can be achieved. Moreover, in the said Example 1 thru | or Example 3, although it was set as the structure provided with the said support means 5, 11, 12 and the said auxiliary | assistant support parts 6 and 6a, this invention is not limited to this, The said support means Only, and the auxiliary support portions 6 and 6a may be omitted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 schematically shows a first embodiment of a projector according to the present invention, where (A) is a perspective view, (B) is a side view, (C) is a sectional view when the tilt function of the support means is not used, and (D) is It is sectional drawing at the time of tilt function use of a support means. FIG. 5A is a diagram illustrating a state where a projector according to the present invention is placed, and FIG. 5B is a diagram illustrating a state where the projector is placed on a table, and FIG. 6A and 6B are diagrams schematically showing a modification of the first embodiment of the projector according to the present invention. FIG. 5A is a perspective view, FIG. 5B is a sectional view when the tilt function of the support means is not used, and FIG. It is sectional drawing at the time of function use. FIG. 5 schematically shows a second embodiment of the projector according to the present invention, in which (A) is a perspective view, (B) is a side view, (C) is a sectional view when the tilt function of the supporting means is not used, and (D) is a diagram. It is sectional drawing at the time of tilt function use of a support means. FIG. 5A is a cross-sectional view illustrating the storage function of the support means in FIG. 4, and FIG. 5B is a cross-sectional view taken along the line a-a ′ in FIG. FIG. 7A is a perspective view schematically showing a modification of the second embodiment of the projector according to the present invention, FIG. 9A is a perspective view in which an auxiliary support portion is provided in an exterior case, and FIG. It is. FIG. 6 is a diagram schematically showing a third embodiment of the projector according to the present invention, where (A) is a perspective view, (B) is a side view showing a state of a support means when placed on a table, and (C) is a high place. It is a side view which shows the state of the support means in the case of turning over and placing on a shelf. 7A is a sectional view of the supporting means when the tilting function of the supporting means is not used, FIG. 7B is a sectional view of the supporting means when the tilting function is used, and FIG. 7C is a holding function of the supporting means. It is sectional drawing shown. FIG. 7A is a cross-sectional view of another example of the support means in FIG. 7, FIG. 7A is a cross-sectional view showing a rotating portion of the support means, FIG. 7B is a cross-sectional view showing a holding state of the holding function of the support means, and FIG. It is sectional drawing which shows the open state of the holding function of a means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Projector 2 Exterior case 2a Insertion hole 2b Recess 2c Upper surface part 2d Lower surface part 2e Side surface part 2f Holding hole 2f 'Rotating hole 2fa Convex part 2fa' Rotating convex part 2g Accommodating part 2ha Front accommodating part 2hb Rear side Storage part 2i Guide hole 2ia First guide groove 2ib First holding hole 2ic Second guide groove 2id Second holding hole 3 Projection lens 4 Display part 5 Support means 5a Support part 5b Support shaft 5c Male thread part 5d E ring 5e Concave part 6 Auxiliary Support portion 6a Auxiliary support portion 7 Indoor 8 Screen 9 Table 10 High shelf 11 Support means 11a Support portion 11b Support shaft 11c Main shaft 11ca Insertion hole 11cb Recess 11cc Projection portion 11cd Holding piece 11ce Spring 11d Male thread portion 11e E ring 12 Support means Part 12b Support shaft 12c Holding part 12 a holding shaft 12cb holding male screw portion 12cc holding E ring 12d rotating portion 12d 'rotating portion 12da' rotating shaft 12db 'rotating male screw portion 12dc' rotating E-ring 12dd 'rotating insertion hole 12de' rotating recess 12e Supporting part 12ea Handle 12eb Holding insertion hole 12eb 'Holding insertion hole 12ec Holding recess 12ed Support insertion hole 12ee Support recess 12g Support male screw part 12h Support E ring

Claims (4)

  A projector comprising an exterior case for accommodating a projection optical system, wherein support means are provided at a rear portion of the upper surface of the exterior case and a front portion of the lower surface, respectively.   A projector provided with an exterior case that accommodates a projection optical system, provided with support means on the rear and front sides of both sides of the exterior case, the rear support means projecting upward, A projector characterized in that the supporting means protrudes downward.   The projector according to claim 2, wherein storage portions for storing the support means are provided on both side surfaces of the exterior case.   A projector provided with an exterior case that accommodates a projection optical system, provided on both side surfaces of the exterior case with support means that rotatably supports a column portion having a support portion at an end, and the support means By rotating, it is possible to switch whether the support part protrudes upward from the rear part of the both side surfaces or whether the support part protrudes downward from the front part of the both side surfaces. Projector.

Images