JP2023043101A - projection device - Google Patents

Abstract

To provide a projection device capable of enlarging an adjustment width of an installation angle even when the projection device is down-sized.SOLUTION: A projection device 10 includes a housing 20, and support parts 31a and 31b connected to the housing 20 via torque hinge parts 32a and 32b and provided to be able to adjust an installation angle of the housing 20, where the support parts 31a and 31b are telescopically provided.SELECTED DRAWING: Figure 1

Description

The present invention relates to projection devices.

Conventionally, a projection device that projects an image formed using a micromirror display element called DMD (digital micromirror device) or a liquid crystal panel on a screen has been provided with a screw structure to adjust the installation angle of the projection device. An adjusting tilt mechanism is provided. For example, the projection device disclosed in Patent Document 1 includes an elevating member that has a male threaded portion and can be retracted from the bottom surface of the projection device, and a slide member that is biased toward the threaded portion. The slide member and the threaded portion abut on the inclined surface. Thereby, the elevating member can be manually pulled out from the lower surface of the projection device, and the height can be finely adjusted by rotating.

JP 2008-298917 A

In a tilt structure using an elevating member having a screw structure, it is not possible to set a long screw length when the projection apparatus is downsized, particularly when the thickness of the housing is thin. Therefore, the adjustment range of the installation angle becomes small, and it may be difficult to perform appropriate projection.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a projection apparatus capable of increasing the adjustment range of the installation angle even if the projection apparatus is made compact.

The projection device of the present invention includes a housing, and a support section connected to the housing via a torque hinge section and provided so as to be able to adjust the installation angle of the housing, wherein the support section is telescopic. possible.

According to the present invention, it is possible to provide a projection apparatus capable of increasing the adjustment range of the installation angle even if the projection apparatus is made compact.

It is the perspective view which looked at the projection apparatus which concerns on embodiment of this invention from the front downward direction. 1 is an exploded perspective view of a projection device according to an embodiment of the invention; FIG. FIG. 4 is a perspective view from above showing a retracted state of a tilt arm of the projection device according to the embodiment of the present invention; FIG. 4 is a perspective view from above showing a projecting state of a tilt arm of the projection device according to the embodiment of the present invention; Fig. 3 shows parts constituting a support part according to an embodiment of the present invention, wherein (a) is a perspective view of a second member, (b) is a perspective view of a pressing member of the first member, and (c) is a perspective view of the first member. [Fig. 2] is a perspective view of a guide body member of the first member; 4A is a cross-sectional view of the VIa-VIa cross section of FIG. 3, and FIG. 5B is a cross-sectional view of the VIb-VIb cross section of FIG. In both figures, the torque hinge portion is omitted. FIG. 4A is an explanatory side view of the usage method of the tilt arm of the projection device according to the embodiment of the present invention, in which (a) shows the stored state, and (b) shows the extended state of the support portion (the protruding state of the first member); , and (c) shows a state in which it is installed at a predetermined installation angle. It is the perspective view seen from the front lower part which shows the modification 1 of the projection apparatus which concerns on embodiment of this invention. It is the perspective view seen from the front lower part which shows the modification 2 of the projection apparatus which concerns on embodiment of this invention.

A mode for carrying out the present invention will be described below. As shown in FIG. 1, the projection device 10 has six surfaces (an upper surface 20a, a lower surface 20b, a left side 20c, a right side 20d, a front surface 20e, and a rear surface 20f) in the shape of a substantially long rectangular box whose longitudinal direction is the horizontal direction. A housing 20 is provided. The projection device 10 has a projection aperture 11 on the front surface 20e side. The projection device 10 emits projection light from a projection aperture 11 . In the following description, left and right in the projection device 10 refer to the left and right direction with respect to the projection direction from the projection aperture 11, and front and rear refer to the front and rear direction with respect to the traveling direction of the projection light of the projection device 10. show.

The housing 20 has an upper case 21 that includes an upper surface 20a and a portion of the right side 20d, and a lower case 22 that includes a lower surface 20b and a portion of the right side 20d. The housing 20 has a front panel 23 on the front side, a rear panel 24 on the rear side, and a left panel 25 on the left side. The front panel 23 extends to the left front corner 20g of the housing 20, and the left front corner 20g is rounded. The front panel 23 is provided with a projection opening 23a of the projection opening 11, an air intake 23b, and an air exhaust 23c.

The rear panel 24 extends to the left rear corner 20h, and the left rear corner 20h is rounded. The rear panel 24 is also appropriately provided with air intake holes. The left panel 25 is provided between the left front corner 20g and the left rear corner 20h where the front panel 23 and the rear panel 24 extend. The left panel 25 is provided with an intake port 25a and a connection port 25b for an image input/output connector or the like. The front panel 23 , the rear panel 24 , and the left panel 25 each bend toward the inside of the housing 20 at the center in the vertical direction.

A tilt arm 30 is provided on the lower surface 20b of the housing 20 (lower case 22). An installation member 40 is provided on the rear side of the tilt arm 30 (in other words, the lower surface 20b of the housing 20 on the side opposite to the opening direction side where the installation contact portion 33a described later opens). The installation member 40 is made of an elastic member such as a rubber material. The installation member 40 has a shape having an inclined surface obtained by obliquely cutting both ends of a cylinder, and has a substantially trapezoidal shape with a short side on the lower side when viewed from the side. The tilt arm 30 provided on the lower surface 20b of the housing 20 rotates so that the front side opens as indicated by the two-dot chain line, and projects the projection device 10 at an arbitrary installation angle (elevation angle) within a predetermined range. (See FIG. 7(c)).

As shown in FIG. 2, the tilt arm 30 includes support portions 31a and 31b elongated in the front-rear direction and torque hinge portions 32a and 32b on the left and right sides, respectively. The torque hinge portions 32a, 32b have rotating shafts 32a1, 32b1. Although details will be described later, the first members 310a and 310b of the support portions 31a and 31b are connected to the rotation shafts 32a1 and 32b1 of the torque hinge portions 32a and 32b. The rotating shafts 32a1 and 32b1 of the torque hinge portions 32a and 32b constitute a free stop type hinge whose rotation is fixed when the torque applied to the rotating shafts 32a1 and 32b1 is a predetermined value or less.

The support portions 31a, 31b and the torque hinge portions 32a, 32b are provided in pairs. Specifically, the support portions 31a and 31b and the torque hinge portions 32a and 32b are arranged such that the support portion 31b and the torque hinge portion 32b are provided on the left side of the housing 20, and the support portion 31a and the torque hinge portion 32a are provided on the right side. , are symmetrical to each other. Torque hinge portions 32 a and 32 b are fixed to lower surface 20 b of housing 20 with two screws 130 . In this manner, the support portions 31a and 31b are connected to the housing 20 via the torque hinge portions 32a and 32b, respectively, and are provided so that the installation angle of the housing 20 can be adjusted. Further, the support portions 31 a and 31 b can be accommodated in a recess 22 a formed in the lower case 22 .

The pair of support portions 31a and 31b are connected to the tip portions of the support portions 31a and 31b (arm mounting portions 329 of second members 320a and 320b to be described later) by an arm portion 33 elongated in the left-right direction. The arm portion 33 is provided with an installation contact portion 33a that comes into contact with the installation surface DT (see FIG. 7C) when the projection device 10 is installed. As shown in FIGS. 3 and 4, the support portions 31a and 31b include first members 310a and 310b and second members 320a and 320b. The second members 320a and 320b are connected to the arm portion 33 including the installation contact portion 33a. In other words, the second members 320a, 320b comprise the mounting abutment 33a. The second members 320a and 320b are slidably provided on the first members 310a and 310b. That is, the support portions 31a and 31b are provided so as to be able to expand and contract. The first members 310a, 310b have pressing members 311a, 311b and guide body members 312a, 312b. As described above, the support portions 31a and 31b and the torque hinge portions 32a and 32b are symmetrical. Therefore, in the following description, the details will be described focusing on the support portion 31a and the torque hinge portion 32a on the right side.

As shown in FIG. 5(a), the second member 320a is made of a substantially L-shaped plate-shaped sheet metal material. The second member 320a includes a long flat plate-shaped main body portion 328 that is long in the front-rear direction, and an inner portion of the front end portion of the flat plate main body portion 328 (when the second member 320a is attached to the housing 20 as the support portion 31a, An arm mounting portion 329 is provided so as to protrude toward the left side of the body 20). The arm mounting portion 329 is connected to the flat plate body portion 328 via a vertical plate-shaped stepped portion 327 that drops downward from the flat plate body portion 328 . An inner side surface 327 a of the stepped portion 327 is positioned so as to protrude inward from an inner edge surface 328 c of the flat plate body portion 328 . A notch portion 326 cut into the flat plate body portion 328 is provided at the rear base end portion of the stepped portion 327 to form the stepped portion 327 by bending. The arm mounting portion 329 is provided with two holes 329a through which screws (not shown) for mounting the arm portion 33 are inserted.

The flat plate main body portion 328 of the second member 320a is provided with a contact convex portion 322 having a concave shape when viewed from the upper surface 328a (convex shape when viewed from the lower surface 328b, see FIGS. 6A and 6B). A similar fitting projection 323 is provided on the rear end side. Here, the upper surface 328a of the flat plate body portion 328 faces the lower surface 20b of the housing 20 when the tilt arm 30 is housed in the housing 20. As shown in FIG. A reinforcing portion 324 is provided between the abutting convex portion 322 and the fitting convex portion 323 . The reinforcing portion 324 has a concave shape when viewed from the upper surface 328 a of the flat plate body portion 328 and is provided in an elongated shape in the longitudinal direction of the flat plate body portion 328 .

As shown in FIG. 5(b), the pressing member 311a of the first member 310a is made of a sheet metal material having a substantially hook shape in cross section. Specifically, a horizontal plate 117 provided in a flat plate shape, a vertical plate 118 formed by bending the inner end of the horizontal plate 117, and a hook shape formed by bending the vertical plate 118 to the outside at a short right angle. A portion 119 is provided. The horizontal plate 117, the vertical plate 118, and the hook-shaped portion 119 are formed to have the same length in the longitudinal direction (front-rear direction).

A fixing portion 110 is formed by bending on the outer side of the rear end portion of the pressing member 311 a so as to stand upward from the upper surface 117 a of the horizontal plate 117 . For this reason, a notch portion 112 that cuts into the horizontal plate 117 is provided on the front side of the base end portion of the fixed portion 110 . The fixed portion 110 is provided with a female screw portion 110a into which a screw (not shown) for attachment is screwed. A plate spring 111 is provided on the distal end side of the horizontal plate 117 of the pressing member 311a. The leaf spring 111 is cut out in a substantially U shape so as to protrude forward and penetrate from the upper surface 117a to the lower surface 117b of the horizontal plate 117 . The tip portion of the plate spring 111 is bent into a substantially V shape, and a pressing portion 111a is provided on the lower surface 117b side of the horizontal plate 117 (see FIGS. 6A and 6B).

As shown in FIG. 5(c), the guide main body member 312a of the first member 310a is formed of a sheet metal material, and includes a guide plate 121 that is elongated in the front-rear direction and has a substantially elongated flat plate shape. A connecting plate 122 is formed by bending so as to stand upright. The guide plate 121 is formed in the shape of a long flat plate that is elongated in the front-rear direction, and is provided with a fitting recess 124 substantially at the center in the front-rear direction. The fitting recess 124 is formed in a concave shape from the upper surface 121a of the guide plate 121 and is formed in a convex shape on the lower surface 121b (see FIGS. 6A and 6B). A notch portion 123 for bending the guide plate 121 and the connecting plate 122 is formed by cutting the connecting plate 122 at the rear connecting portion between the guide plate 121 and the connecting plate 122 . The connecting plate 122 is formed so that the width gradually narrows from the rear side to the tip side, and the tip portion is formed to have a constant width, and the tip portion is aligned with the guide plate 121 .

The connecting plate 122 is formed longer than the guide plate 121 . That is, the rear side of the connecting plate 122 extends longer than the rear end of the guide plate 121 . A rearwardly extending portion of the connecting plate 122 is provided with a shaft fixing hole 122a to which the rotating shaft 32a1 of the torque hinge portion 32a is fixed. A hole portion 122b for fixing the fixing portion 110 of the pressing member 311a is provided in the vicinity of the notch portion 123 in the connecting plate 122 .

The structure in which the pressing member 311a is fixed to the guide main body member 312a will be described with reference back to FIGS. The pressing member 311a and the guide body member 312a are fixed by inserting a screw (not shown) from the outside into the hole 122b of the connecting plate 122 of the guide body member 312a and screwing it into the female screw portion 110a of the fixing portion 110 of the pressing member 311a. be. At this time, the upper surface of the hook-shaped portion 119 of the pressing member 311a is in contact with the lower surface 121b of the guide plate 121 of the guide body member 312a. In this way, the guide is guided in a region surrounded by the lower surface 117b of the horizontal plate 117 of the pressing member 311a, the outer surface of the vertical plate 118, the upper surface 121a of the guide plate 121 of the guide body member 312a, and the inner surface of the connecting plate 122. A portion 120 is formed. The second member 320a is inserted into the guide portion 120 and slidably provided on the first member 310a. The first member 310 a includes a guide portion 120 and a leaf spring 111 that is an elastic pressing portion that presses the second member 320 a against the guide portion 120 .

The front end of the guide portion 120, that is, the front edge surfaces 117c and 118a of the horizontal plate 117 and the vertical plate 118 are located rearward of the front edge surface 121c of the guide plate 121 of the guide body member 312a. In the recessed state of the second member 320a (the state of FIG. 3), the rear edge surface 327b (see also FIG. 5A) of the stepped portion 327 of the second member 320a is aligned with the front edge of the vertical plate 118 of the pressing member 311a. It abuts on the surface 118a. In this way, the rearward movement of the second member 320a is restricted. At this time, the length from the front edge surfaces 117c and 118a of the horizontal plate 117 and the vertical plate 118 to the front edge surface of the guide body member 312a (the front edge surface 121c of the guide plate 121 and the front edge surface 122c of the connecting plate 122) and Since the arm mounting portion 329 and the stepped portion 327 have substantially the same longitudinal length, the front edge surface 320a1 of the second member 320a and the front edge surface of the guide body member 312a are substantially aligned. In addition, the width of the flat plate main body portion 328 of the second member 320a is substantially the same as the width of the guide portion 120 (the distance from the outer surface of the vertical plate 118 to the connecting plate 122) to a degree that is slightly narrower than that of the second member 320a. is smoothly guided by the guide portion 120 .

As shown in FIGS. 6A and 6B, the pressing portion 111a of the leaf spring 111 (elastic pressing portion) of the pressing member 311a is in contact with the upper surface 328a of the flat plate body portion 328 of the second member 320a. there is Therefore, the second member 320a is pressed against the upper surface 121a of the guide plate 121 of the guide body member 312a of the first member 310a by the leaf spring 111 of the pressing member 311a. In the recessed state of the second member 320a shown in FIG. 6(a), the abutting convex portion 322 and the fitting convex portion 323 abut on the upper surface 121a of the guide plate 121. As shown in FIG. As a result, the second member 320a strongly pushes the plate spring 111 upward, and the second member 320a is pressed by the plate spring 111 with a strong pressing force. Storing is reduced.

When the arm portion 33 is pulled forward by hand to move the second member 320a forward, the contact protrusion 322 is removed from the upper surface 121a of the guide plate 121, and the second member 320a slightly moves toward the guide plate 121. do. Therefore, the pressing force of the leaf spring 111 on the second member 320a is slightly reduced, and the second member 320a can be easily pulled out. Then, when the second member 320a continues to move forward, the fitting convex portion 323 is engaged with the fitting concave portion 124 of the guide plate 121 as shown in FIG. 6(b). The position where the fitting convex portion 323 and the fitting concave portion 124 are fitted to each other is the most protruding position (the position where the support portion 31a is most extended) as a predetermined position of the second member 320a. The forward movement of the second member 320a is restricted by the concave-convex fitting of the fitting convex portion 323 and the fitting concave portion 124 . Here, the position of the pressing portion 111 a in the front-rear direction is shifted to the front side of the fitting recess 124 . In other words, the pressing portion 111 a is not located directly above the fitting recess 124 .

The method of using the tilt arm 30 is as follows. First, in the retracted state of the tilt arm 30 shown in FIG. 7(a), the arm portion 33 is pulled forward to extend the support portions 31a and 31b as shown in FIG. 7(b). Let At this time, the fitting convex portion 323 and the fitting concave portion 124 are fitted together (see FIG. 6B). Then, the angle of the tilt arm 30 is adjusted while the support portions 31a and 31b are extended, and the projector 10 is installed as shown in FIG. 7(c). At this time, the installation contact portion 33a of the arm portion 33 and the installation member 40 are in contact with the installation surface DT.

When the projection device 10 is installed by extending the support portions 31a and 31b, the weight of the main body of the projection device 10 including the housing 20 (arrow P1) causes the support portions 31a and 31b to move to Q in FIG. 7(c). As shown in the enlarged view of the portion indicated by , a force (arrow P2) is applied so as to bend the portion where the fitting protrusion 323 and the fitting recess 124 are fitted together. However, in the portion where the fitting protrusion 323 and the fitting recess 124 are unevenly fitted, a force to rotate in the direction (arrow D1 direction) in which the uneven fitting is fitted with the pressing part 111a as a fulcrum is applied, so that the uneven fitting is performed. It does not bend at the part (connecting part of the first members 310a, 310b and the second members 320a, 320b).

The retraction of the tilt arm 30 may be performed in the reverse order of the above procedure. That is, first, the tilt arm 30 is rotated to be substantially parallel to the lower surface 20b of the housing 20 (the state shown in FIG. 7B), and the arm portion 33 is pushed to shorten and retract the support portions 31a and 31b. At this time, the concave-convex fitting between the fitting convex portion 323 and the fitting concave portion 124 is released. It can escape from the fitting recess 124 . Thus, the tilt arm 30 is retracted as shown in FIG. 7(a).

Also, the arm portion 33 of the tilt arm 30 can be provided with covers 36 and 37 shown in FIGS. For example, a tilt arm 30A according to Modification 1 shown in FIG. The cover 36 is in the form of a long rectangle with rounded corners having semicircular ends on both sides. The installation contact portion 33aA including the lower surface 36a of the cover 36 has an annular edge portion of the lower surface 36a as a rounded corner R portion 36b. A tilt arm 30B according to Modification 2 shown in FIG. Like the cover 36, the cover 37 is formed in the shape of a long rectangle with rounded corners having semicircular ends. The installation contact portion 33aB including the lower surface 37a of the cover 37 has a C-chamfered portion 37b as an annular edge portion of the lower surface 37a.

As described above, the present invention is not limited by the present embodiment, and can be implemented with various modifications. For example, in the present embodiment, the tilt arm 30 is provided with the two support portions 31a and 31b having the installation contact portion 33a provided on the arm portion 33. However, the arm portion 33 is omitted and the housing 20 is The projection device 10 can also have a single support with a mounting abutment on the central front lower surface. Also, the support may be extendable in other forms, such as a foldable type. In addition, the position where the fitting protrusions 323 of the first members 310a and 310b and the fitting recesses 124 of the second members 320a and 320b are unevenly fitted is the most projecting position of the second members 320a and 320b. By providing a plurality of mating recesses 124, it is possible to perform recess-projection fitting at predetermined protruding positions in multiple stages, thereby further widening the adjustment range of the installation angle. In the present embodiment, the first members 310a and 310b are provided with the fitting protrusions 323 and the second members 320a and 320b are provided with the fitting recesses 124 to achieve uneven fitting. It's okay.

As described above, according to the embodiment of the present invention, the projection device 10 is connected to the housing 20 via the housing 20 and the torque hinge portions 32a and 32b, and the support provided so that the installation angle of the housing 20 can be adjusted. It has parts 31a and 31b, and support parts 31a and 31b are provided so that extension is possible.

As a result, the support portions 31a and 31b can be extended when the installation angle of the housing 20 is adjusted, and can be shortened when the housing 20 is retracted. You can set the installation angle with and project.

The support portions 31a and 31b are provided with first members 310a and 310b connected to the rotation shafts 32a1 and 32b1 of the torque hinge portions 32a and 32b, and an installation contact portion 33a that contacts the installation surface. and second members 320a and 320b slidably provided on 310b. As a result, the support portions 31a and 31b that expand and contract can be configured with a simple and compact structure.

Also, the first members 310 a and 310 b include a guide portion 120 and a plate spring 111 that is an elastic pressing portion that presses the second members 320 a and 320 b against the guide portion 120 . As a result, the second members 320a and 320b are smoothly guided by the guide portion 120, and unintentional movement of the second members 320a and 320b by the plate spring 111 can be reduced.

Further, the first members 310a, 310b and the second members 320a, 320b are fitted with projections and recesses at predetermined projecting positions of the second members 320a, 320b. The protruding position here is the position where the fitting convex portion 323 is provided on the second members 320a and 320b. As a result, the movement of the second members 320a and 320b can be restricted at a predetermined position, such as the maximum protruding position, with a simple configuration of projections and recesses.

The first members 310a and 310b have a guide portion 120 and a plate spring 111 which is an elastic pressing portion that presses the second members 320a and 320b against the guide portion 120. The pressing portion of the plate spring 111 The position where the 111a presses the second members 320a and 320b is shifted from the position where the first members 310a and 310b and the second members 320a and 320b are engaged with each other at the predetermined projecting positions of the second members 320a and 320b. As a result, even if the load of the main body of the projection device 10 including the housing 20 is applied to the support portions 31a and 31b, it is possible to make it difficult for the concave-convex fitting to come off. The protruding position here is the position where the fitting convex portion 323 is provided on the second members 320a and 320b in the same manner as described above.

The support portions 31a and 31b are provided in a pair, and the installation contact portion 33a is provided in the arm portion 33 connecting the second members 320a and 320b of the pair of support portions 31a and 31b. Thereby, the pair of support portions 31a and 31b can be synchronously rotated by the arm portion 33, and the setting of the installation angle can be facilitated.

Further, the arm portion 33 has a cover 36, and the cover 36 has a rounded corner portion 36b. As a result, the rounded corner portion 36b can be used as the installation contact portion 33a, and the installation surface can be made less likely to be damaged.

Further, the arm portion 33 has a cover 37, and the cover 37 has a chamfered portion 37b. Accordingly, the C-chamfered portion 37b can be used as the installation contact portion 33a, and the installation contact portion 33a parallel to the installation surface can be formed.

Further, in the present embodiment, the positions where the torque hinge portions 32a and 32b of the tilt arm 30 are connected to the housing are fixed, but the present invention is not limited to this. For example, the screw holes (two screw holes and one guide pin) for attaching the torque hinge portions 32a and 32b to the lower surface 20b of the housing 20 are long holes in the front-rear direction, and the mounting positions of the torque hinge portions 32a and 32b are set to It may be configured to be adjustable forward or backward. Alternatively, two screw holes may be provided in the lower surface 20b of the housing 20 (each of which has two locations where the torque hinge portions 32a and 32b are attached). With these, it is possible to further increase the adjustment range of the installation angle of the projection device 10 .

It should be noted that the embodiments described above are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and its equivalents.

Below, the invention described in the first claim of the present application is added.
[1] a housing;
a support portion connected to the housing via a torque hinge portion and provided so as to be able to adjust the installation angle of the housing;
has
The projection apparatus in which the support section is provided to be extendable.
[2] The support portion includes a first member connected to the rotation shaft of the torque hinge portion, and a second member provided slidably on the first member and having an installation contact portion that contacts an installation surface; The projection device according to [1] above.
[3] The projection device according to [2], wherein the first member includes a guide portion and an elastic pressing portion that presses the second member against the guide portion.
[4] The projection device according to [2] or [3], wherein the first member and the second member are fitted to each other at a predetermined projecting position of the second member.
[5] The projection device according to [4], wherein the predetermined protruding position is a position where the second member is provided with a fitting projection.
[6] The first member has a guide portion and an elastic pressing portion that presses the second member against the guide portion,
[2] above, wherein the position where the elastic pressing portion presses the second member is shifted from the position where the first member and the second member are unevenly fitted at a predetermined projecting position of the second member. projection device.
[7] The projection device according to [6], wherein the predetermined protruding position is a position where the second member is provided with a fitting projection.
[8] The support part is provided in a pair,
The projection apparatus according to any one of [2] to [7], wherein the installation contact portion is provided on an arm portion connecting the second members of the pair of support portions.
[9] The arm portion has a cover member,
The projection device according to [8], wherein the cover member has an R-shaped portion.
[10] The arm portion has a cover member,
The projection device according to [8], wherein the cover member includes a C-chamfered portion.
[11] The projection device according to any one of [1] to [10], wherein a mounting position for mounting the torque hinge portion to the housing is adjustable in the front-rear direction of the housing.

10 projection device 11 projection port 20 housing 20a upper surface 20b lower surface 20c left side surface 20d right side surface 20e front surface 20f rear surface 20g left front corner 20h left rear corner 21 upper case 22 lower case 22a recess 23 front panel 23a projection opening 23b air intake Port 23c Air outlet 24 Rear panel 25 Left panel 25a Intake port 25b Connection port 30 Tilt arm 30A Tilt arm 30B Tilt arm 31a Support portion 31b Support portion 32a Torque hinge portion 32a1 Rotation shaft 32b Torque hinge portion 32b1 Rotation shaft 33 Arm portion 33a Installation contact portion 33aA Installation contact portion 33aB Installation contact portion 36 Cover 36a Lower surface 36b Corner R portion 37 Cover 37a Lower surface 37b C-chamfered portion 40 Installation member 110 Fixing portion 110a Female screw portion 111 Plate spring 111a Pressing portion 112 Notch portion 117 Horizontal plate 117a Upper surface 117b Lower surface 117c Front edge surface 118 Vertical plate 118a Front edge surface 119 Hook-shaped portion 120 Guide portion 121 Guide plate 121a Upper surface 121b Lower surface 121c Front edge surface 122 Connecting plate 122a Shaft fixing hole 122b Hole 122c Front edge surface 123 Notch 124 Fitting recess 130 Screw 310a First member 310b First member 311a Pressing member 311b Pressing member 312a Guide main body member 312b Guide main body member 320a Second member 320a1 Front end edge surface 320b Second member 322 Contact protrusion 323 Fitting Protruding portion 323a Curved surface 324 Reinforcement portion 326 Notch portion 327 Step portion 327a Inner side surface 327b Rear edge surface 328 Flat plate body portion 328a Upper surface 328b Lower surface 328c Inner edge surface 329 Arm attachment portion 329a Hole portion DT Installation surface

The projection device of the present invention includes a housing, a first member, and a support portion having a second member slidably provided on the first member , and when the second member is slid, , the position where the first member presses the second member is different from the position where the first member and the second member are fitted to each other.

Claims (11)

a housing;
a support portion connected to the housing via a torque hinge portion and provided so as to be able to adjust the installation angle of the housing;
has
The projection apparatus in which the support section is provided to be extendable. The support portion includes a first member connected to the rotation shaft of the torque hinge portion, and a second member having an installation contact portion that contacts an installation surface and is slidably provided on the first member. Item 1. The projection device according to item 1. 3. The projection device according to claim 2, wherein the first member includes a guide portion and an elastic pressing portion that presses the second member against the guide portion. 4. The projection device according to claim 2, wherein the first member and the second member are recess-and-projection-fitted at a predetermined projecting position of the second member. 5. The projection device according to claim 4, wherein the predetermined protruding position is a position where the second member is provided with a fitting projection. The first member has a guide portion and an elastic pressing portion that presses the second member against the guide portion,
3. The position at which the elastic pressing portion presses the second member is deviated from the position at which the first member and the second member are unevenly fitted at a predetermined projecting position of the second member. projection device. 7. The projection device according to claim 6, wherein the predetermined projecting position is a position where the second member is provided with a fitting projection. The support part is provided in a pair,
The projection apparatus according to any one of claims 2 to 7, wherein the installation contact portion is provided on an arm portion connecting the second members of the pair of support portions. The arm portion has a cover member,
9. The projection apparatus according to claim 8, wherein the cover member has rounded corners. The arm portion has a cover member,
9. The projection device according to claim 8, wherein said cover member comprises a C-chamfer. 11. The projection apparatus according to any one of claims 1 to 10, wherein a mounting position at which the torque hinge portion is mounted on the housing is adjustable with respect to the front-rear direction of the housing.

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