projector

Abstract

To provide a projector that can improve usability.SOLUTION: A projector comprises: an exterior housing 100 that has a first wall part 101; a projection optical unit that is accommodated in the exterior housing 100, and has a lens group projecting image light on a projection surface; a focus lever 510 that moves the position of the lens group; a power supply switch 530 that is pressed to generate a control signal; and a connection terminal 520 that is electrically connected with a cable transmitting an electrical signal. The focus lever 510, power supply switch 530, and connection terminal 520 are arranged on the first wall part 101.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a projector. [Background technology]

[0002] Patent Document 1 discloses a projector that includes an operation unit with multiple push buttons including a power button, a connector unit with connection terminals for connecting external devices, and a focus adjustment lever for adjusting the focal position of the projection lens. The operation unit, connector unit, and focus adjustment lever are each located on different sides of the housing.

[0003] Patent Document 2 discloses a projector in which an operation unit for adjusting the focus state of an image is arranged on a face portion that is one side of a housing portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-50478 [Patent Document 2] Patent Publication No. 2021-110858 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the projector described in Patent Document 1, the operation unit, connector unit, and focus adjustment lever are located on different surfaces of the housing, which poses a problem of poor usability for the user.

[0006] Similarly, the projector described in Patent Document 2 does not disclose that a connector section with a connection terminal for connecting external devices or operation buttons for operating the projector's functions are provided on the same surface as the operation section for operating the lens, which makes it difficult for users to use. [Means for solving the problem]

[0007] The projector comprises an exterior housing having a plurality of walls including a first wall, a projection unit housed in the exterior housing and having a lens group that projects image light onto a projection surface, a focus lever that moves the position of the lens group, a push button that generates a control signal when pressed, and a connection terminal that is electrically connected to a cable that transmits an electrical signal, and the focus lever, the push button, and the connection terminal are arranged on the first wall. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a configuration of a projector. [Figure 2] FIG. 2 is a plan view showing the internal configuration of the projector. [Figure 3] FIG. 2 is a perspective view showing the configuration of a projection unit. [Figure 4] FIG. 2 is a perspective view showing the configuration of a projection optical unit. [Figure 5] FIG. 1 is a perspective view showing a configuration of a projector. [Figure 6] FIG. 1 is a perspective view showing a state in which the cover of the projector is removed. [Figure 7] FIG. [Figure 8] FIG. 3 is a plan view of the configuration of the operation unit as seen from above. [Figure 9] FIG. 4 is a side view showing the positional relationship between the operation unit and the cover. [Figure 10] FIG. [Figure 11] FIG. 4 is a perspective view showing the positional relationship between the operation unit and the cover. [Figure 12] FIG. 4 is a perspective view showing the positional relationship between the operation unit and the cover. [Figure 13] FIG. 2 is a perspective view showing the configuration of a focus lever. [Figure 14] FIG. 2 is a perspective view showing the configuration of a focus lever. DETAILED DESCRIPTION OF THE INVENTION

[0009] In the following figures, three mutually orthogonal axes will be referred to as the X-axis, Y-axis, and Z-axis. The direction along the X-axis will be referred to as the "X direction," the direction along the Y-axis as the "Y direction," and the direction along the Z-axis as the "Z direction." The direction of the arrow is the + direction, and the direction opposite the + direction is referred to as the - direction. Note that the +Z direction is sometimes referred to as "up" or "upward," and the -Z direction as "down" or "downward," and the view from the +Z direction is also referred to as a planar view or planar view. In addition, the surface on the +Z side will be referred to as the top surface, and the surface on the opposite side, the -Z side, will be referred to as the bottom surface.

[0010] First, the configuration of a projector 1000 will be described with reference to FIGS.

[0011] 1 and 2, the projector 1000 is, for example, a short focus type projector 1000, and includes an exterior housing 100 and a projection unit 200 housed in the exterior housing 100. Image light L projected from the projection unit 200 is projected onto a projection surface 300. The short focus type projector 1000 includes a bent type and a concave mirror type.

[0012] The exterior housing 100 has a first wall 101, a second wall 102 facing the projection surface 300, a third wall 103 facing the second wall 102, and a fourth wall 104 facing the exterior housing 100, i.e., an installation surface 301 on which the projector 1000 is installed. The first wall 101 is a wall other than the wall facing the projection surface 300, and is a wall that intersects with the second wall 102, the third wall 103, and the fourth wall 104.

[0013] 3, the projection unit 200 includes a light source unit 201, a light guiding optical unit 202, an image forming unit 203, and a projection optical unit 204 as a projection section. The light source unit 201, the light guiding optical unit 202, the image forming unit 203, and the projection optical unit 204 are arranged along the system optical axis (image light L).

[0014] The light source unit 201 includes a lamp unit including a white light source such as an ultra-high pressure mercury lamp or a halogen lamp, an integrator lens, and a polarization conversion element. The light source may be a solid-state light source such as a laser semiconductor. The polarization conversion element has the function of aligning the P-polarized component and the S-polarized component emitted from the light source.

[0015] The light-guiding optical unit 202 includes, for example, a dichroic mirror as a light separating element, a reflecting mirror, and a relay lens.

[0016] The image forming unit 203 is a part that generates image light L from the light emitted from the light source unit 201, and includes liquid crystal panels 203R, 203G, and 203B as three light modulation panels, and a cross dichroic prism as a light combining element.

[0017] The projection optical unit 204 has a lens shift mechanism and the like, and is attached to the exterior housing 100. The combined image light L is projected onto the projection surface 300 by the projection lens, and the image is enlarged and displayed. As shown in Fig. 4, the projection optical unit 204 is provided with a lens group 204a having a reflecting mirror and a plurality of lenses for reflecting the image light L.

[0018] Next, the cover 400 attached to the exterior housing 100 will be described with reference to FIGS.

[0019] 5, as described above, exterior housing 100 has first wall portion 101, second wall portion 102, and third wall portion 103. A detachable cover 400 is attached to first wall portion 101 of exterior housing 100.

[0020] 6, cover 400 covers a focus lever 510, a connection terminal 520, and the like. Focus lever 510 moves the position of lens group 204a of projection optical unit 204. Connection terminal 520 is electrically connected to a cable that transmits electrical signals.

[0021] In this way, since the focus lever 510, the connection terminal 520, etc. are covered with the cover 400, it is possible to hide the wiring portion, which tends to become messy, and the design of the external appearance can be improved.

[0022] Next, the configuration of the first wall portion 101 (also referred to as the operation portion 101) where operation functions are concentrated will be described with reference to FIGS.

[0023] As shown in FIGS. 7 and 8, on the first wall portion 101, a power switch 530 as a push button, a focus lever 510, a connection terminal 520, and a power cable connection terminal 540 are arranged.

[0024] The press button is not limited to the power switch 530, and may be any button that generates a control signal when pressed. For example, it may be a menu button or a home button. The menu button or home button may be operated by a remote control. The connection terminal 520 is a terminal for connecting to an external device, and may be, for example, a service, DCOUT, headphone, USB, HDMI, or opticalOUT terminal.

[0025] 8, first wall 101 has a surface on which power switch 530 is arranged, a first recess 111 recessed toward the inside of exterior housing 100, and a second recess 112 recessed toward the inside by a greater amount than first recess 111. Focus lever 510 is arranged in first recess 111. Connection terminal 520 is arranged in second recess 112.

[0026] In this way, because focus lever 510 is disposed in first recess 111, it is possible to prevent focus lever 510 from protruding from end surface 101a of first wall portion 101. Furthermore, because connection terminal 520 is disposed in second recess 112, even when a connection cable is connected to connection terminal 520, it is possible to prevent connection lever 510 from protruding significantly from end surface 101a of first wall portion 101, thereby improving the design.

[0027] In addition, focus lever 510, power switch 530, connection terminal 520, etc. are arranged on first wall 101. In other words, focus lever 510, etc., which are used frequently by users, are arranged concentrated on one surface of exterior housing 100, which improves usability for the user compared to when they are arranged dispersedly on multiple wall sections.

[0028] Furthermore, the first wall 101 is a wall that intersects with the second wall 102, the third wall 103, and the fourth wall 104, in other words, the first wall 101 is a side surface of the exterior housing 100 facing the projection surface 300, so the user can access the first wall 101 even during projection. Furthermore, in the short-focus projector 1000, the exterior housing 100 and the projection surface 300 are close to each other, so having the first wall 101 be a side surface of the exterior housing 100 improves usability for the user. In addition, because the side surface of the exterior housing 100 is the first wall 101, it is possible to make the operation unit 101 less visible to viewers looking at the projection surface 300, thereby improving the design of the exterior.

[0029] Next, the positional relationship between the first wall portion 101 and the cover 400 will be described with reference to FIGS.

[0030] 9, a cover 400 that covers the focus lever 510, the connection terminal 520, etc. is disposed on the first wall portion 101. As shown in FIGS. 9 and 10, the cover 400 has a first cover 410 and a second cover 420 that is detachably connected to the first cover 410.

[0031] The first cover 410 covers the focus lever 510 and a first portion 521 of the connection terminal 520. The second cover 420 covers a second portion 522 of the focus lever 510 and the connection terminal 520 excluding the first portion 521.

[0032] Specifically, the first cover 410 covers the focus lever 510 and a part of the connection terminal 520. The second cover 420 covers the other part of the connection terminal 520. The first cover 410 can be fixed to the exterior housing 100 when the second cover 420 is detached.

[0033] As shown in Fig. 10, first cover 410 and second cover 420 are fixed together with screws 440 having knobs that can be turned with fingers. Also, as shown in Fig. 8, one end 400a of cover 400 is cut out to provide a gap between it and exterior housing 100. This allows the power cable and cables connected to external devices to be pulled out to the outside even when cover 400 is attached to exterior housing 100.

[0034] Furthermore, power switch 530 is exposed and not covered by cover 400. Cover 400 can be smoothly fixed to exterior housing 100 by inserting two positioning pins 450 into holes provided in exterior housing 100.

[0035] 11 and 12, the cover 400 is attached to the exterior housing 100 via a connecting portion 550. Specifically, the cover 400 is provided with, for example, three hooks 430. The exterior housing 100 is provided with, for example, three recesses 120. The hooks 430 fit into the recesses 120, thereby fixing the cover 400 to the exterior housing 100.

[0036] To remove the cover 400 from the exterior housing 100, slide the operating lever 560 in the +Y direction as shown in Fig. 9. This disengages the hook 430 from the recess 120 as shown in Fig. 12, allowing the cover 400 to be removed from the exterior housing 100.

[0037] As described above, since the cover 400 has the first cover 410 and the second cover 420, one of the first cover 410 and the second cover 420 can be opened and operated while the other cover remains closed. This makes it possible to prevent contact with parts that are not being operated, thereby reducing accidental operation. Furthermore, since the first wall portion 101 is not entirely exposed during operation, the exterior design can be improved.

[0038] Furthermore, since a portion of connection terminal 520 is covered with detachable second cover 420, even when an external device with a large protrusion is connected to connection terminal 520, first cover 410 can be left attached to exterior housing 100 by removing second cover 420 from first cover 410. This allows for an improved exterior design.

[0039] Next, the configuration of the focus lever 510 will be described with reference to FIGS.

[0040] 13 and 14, the focus lever 510 is connected to a connection portion 511. The connection portion 511 is connected to a focus ring rotation lever 513 via a hinge portion 512.

[0041] By moving the focus lever 510 in the vertical direction, the focus ring rotation lever 513 moves in the vertical direction via the connection part 511, and the lens group 204a connected to the focus ring rotation lever 513 can be slid.

[0042] As described above, the projector 1000 of this embodiment comprises an exterior housing 100 having a first wall portion 101, a projection optical unit 204 housed in the exterior housing 100 and having a lens group 204a that projects image light L onto a projection surface 300, a focus lever 510 that moves the position of the lens group 204a, a power switch 530 that generates a control signal when pressed, and a connection terminal 520 that is electrically connected to a cable that transmits an electrical signal, and the focus lever 510, power switch 530, and connection terminal 520 are arranged on the first wall portion 101.

[0043] According to this configuration, the focus lever 510, the power switch 530, and the connection terminal 520 are arranged on the first wall portion 101. In other words, the focus lever 510 and other components that are frequently used by users are arranged in a concentrated manner on one surface of the exterior housing 100, thereby improving usability for the user compared to when they are arranged dispersedly on multiple wall portions.

[0044] Furthermore, in projector 1000 of this embodiment, first wall 101 preferably has recesses 111, 112 recessed toward the inside of exterior housing 100, and at least connection terminal 520 is disposed in recesses 111, 112. According to this configuration, since connection terminal 520 is disposed in recesses 111, 112, even when an external device or connection cable that protrudes a large amount is connected to connection terminal 520, the amount of protrusion from projector 1000 can be reduced, and design can be improved.

[0045] Furthermore, projector 1000 of the present embodiment preferably includes cover 400 that covers at least focus lever 510 and connection terminal 520. According to this configuration, focus lever 510 and connection terminal 520 are covered with cover 400, so that it is possible to hide areas that tend to become cluttered, and the design of the external appearance can be improved.

[0046] Furthermore, in the projector 1000 of this embodiment, the cover 400 preferably includes a first cover 410 that covers at least the focus lever 510 and a first portion 521 of the connection terminal 520, and a second cover 420 that is detachably connected to the first cover 410 and covers a second portion 522 excluding the first portion 521. With this configuration, since the projector 1000 includes the first cover 410 and the second cover 420, one of the first cover 410 and the second cover 420 can be opened for operation while the other cover remains closed. This prevents contact with portions that are not being operated, thereby reducing the risk of erroneous operation. Furthermore, since the first wall portion 101 is not entirely exposed during operation, the exterior design can be improved.

[0047] Furthermore, in projector 1000 of this embodiment, first cover 410 can be fixed to exterior housing 100 with second cover 420 detached, and preferably covers focus lever 510, and second cover 420 covers connection terminal 520. According to this configuration, since connection terminal 520 is covered by detachable second cover 420, even when an external device that protrudes significantly is connected to connection terminal 520, first cover 410 can be left attached to exterior housing 100 by detaching second cover 420 from first cover 410. This makes it possible to improve the design of the exterior.

[0048] Furthermore, in projector 1000 of this embodiment, first cover 410 preferably has a notch 401 at its end in the -Y direction. When first cover 410 is fixed to exterior housing 100 so as to cover focus lever 510, power switch 530 is exposed from notch 401. Furthermore, the pressing surface of power switch 530 is flush with the outer surface of first cover 410 when first cover 410 is fixed to exterior housing 100.

[0049] According to this configuration, the appearance can be improved by covering focus lever 510 with first cover 410. Furthermore, by exposing power switch 530 from cutout 401, the user can access power switch 530, which is most frequently accessed by the user, even when first cover 410 is fixed to exterior housing 100, thereby improving usability for the user.

[0050] Furthermore, by making the outer surface of first cover 410 and power switch 530 flush, it is possible to reduce erroneous operation and improve the appearance compared to when power switch 530 protrudes from the outer surface of first cover 410. Also, by making the outer surface of first cover 410 and power switch 530 flush, the user can more easily access power switch 530 and operability is improved compared to when power switch 530 is recessed from the outer surface of first cover 410. Note that "flush" includes some deviations such as tolerances.

[0051] Furthermore, in the projector 1000 of this embodiment, the first wall 101 is preferably a wall of the exterior housing 100 excluding the surface facing the projection surface 300. With this configuration, the first wall 101 is a wall excluding the surface facing the projection surface 300, and the connection terminals 520 and the like are concentrated on the first wall 101, so that the user's accessibility can be improved even during projection by the projector 1000. As a result, usability can be improved. Furthermore, because the wall is in a direction different from the projection direction, it is possible to prevent light from entering the eyes.

[0052] Furthermore, in the projector 1000 of this embodiment, the projection optical unit 204 is a short focus type, the exterior housing 100 has a second wall 102 facing the projection surface 300, a third wall 103 facing the second wall 102, and a fourth wall 104 facing an installation surface 301 on which the exterior housing 100 is installed, and it is preferable that the first wall 101 is a wall that intersects with the second wall 102, the third wall 103, and the fourth wall 104. With this configuration, the first wall 101 is a wall that intersects with the second wall 102, the third wall 103, and the fourth wall 104, in other words, the first wall 101 is a side surface of the exterior housing 100 facing the projection surface 300, so that the user can access the first wall 101 even during projection. Furthermore, in the short focus projector 1000, the exterior housing 100 and the projection surface 300 are close to each other, and therefore the first wall 101 is the side surface of the exterior housing 100, thereby improving usability for the user. In addition, because the side surface of the exterior housing 100 becomes the first wall 101, it is possible to make the operation unit 101 less visible to the viewer looking at the projection surface 300, and the design of the exterior can be improved.

[0053] Modifications of the above-described embodiment will now be described.

[0054] As described above, the cover 400 is not limited to being detachable, but may be of an openable / closable type.

[0055] Furthermore, the shape of exterior housing 100 is not limited to a square, and it may be a cylindrical shape. In this way, when the side surface of exterior housing 100 has no corners, a part of the side surface becomes first wall portion 101. [Explanation of symbols]

[0056] 100...exterior housing, 101...first wall portion (operation portion), 101a...end surface, 102...second wall portion, 103...third wall portion, 104...fourth wall portion, 120...recess, 200...projection unit, 201...light source unit, 202...light guiding optical unit, 203...image forming unit, 203R, 203G, 203B...liquid crystal panels, 204...projection optical unit as projection portion, 204a...lens group, 300...projection surface, 301...installation surface, 400...cover, 401... Notch, 400a...one end side, 410...first cover, 420...second cover, 430...hook, 440...screw, 450...positioning pin, 510...focus lever, 511...connection part, 512...hinge part, 513...focus ring rotation lever, 520...connection terminal, 521...first part, 522...second part, 530...power switch as push button, 540...power cable connection terminal, 550...connection part, 1000...projector.

Claims

1. an exterior housing having a plurality of walls including a first wall; a projection unit housed in the exterior housing and having a lens group that projects image light onto a projection surface; a focus lever for moving the position of the lens group; a push button that generates a control signal when pressed; a connection terminal electrically connected to a cable for transmitting an electrical signal; a cover that covers at least the focus lever and the connection terminal; Equipped with The first wall portion has the focus lever, the push button, and the connection terminal. are placed, The cover is configured to cover at least one of the focus lever and the connection terminal. a first cover that covers a part of the other of the first and second covers; and a second cover that covers the projector.

2. The projector according to claim 1 , the first wall portion has a recess recessed toward the inside of the exterior housing, At least the connection terminal is disposed in the recess.

3. 3. The projector according to claim 1, The first cover can be fixed to the exterior housing in a state where the second cover is detached. It also covers the focus lever, The second cover covers the connection terminal.

4. 4. The projector according to claim 1, The cover is configured to cover the focus lever and the connection terminal. It has a cutout that exposes the button, The projector, wherein the press button and the outer surface of the cover are flush with each other.

5. an exterior housing having a plurality of walls including a first wall; a projection unit housed in the exterior housing and having a lens group that projects image light onto a projection surface; a focus lever for moving the position of the lens group; a push button that generates a control signal when pressed; a connection terminal electrically connected to a cable for transmitting an electrical signal; a cover that covers at least the focus lever and the connection terminal; Equipped with The first wall portion has the focus lever, the push button, and the connection terminal. are placed, The cover is configured to cover the focus lever and the connection terminal. It has a cutout that exposes the button, The projector, wherein the press button and the outer surface of the cover are flush with each other.

6. The projector according to claim 5 , the first wall portion has a recess recessed toward the inside of the exterior housing, At least the connection terminal is disposed in the recess.

7. 7. The projector according to claim 1, The first wall portion is any of the plurality of wall portions except for the second wall portion facing the projection surface. The wall part is the projector.

8. The projector according to claim 7, the projection unit is a short focus type, The plurality of walls include the second wall, a third wall facing the second wall, and the exterior housing. a fourth wall portion facing the installation surface on which the body is placed, The first wall portion is a wall portion that intersects with the second wall portion, the third wall portion, and the fourth wall portion. 、 projector.

Images