JP2022093949A - Image projection device - Google Patents

Abstract

To realize an image projection device that is downsized so as to be easily hand-held.SOLUTION: Provided is an image projection device 1 comprising: a projection unit 3 for irradiating light and projecting an image; a control board 6 for controlling the operation of the projection unit 3; a battery 7 for supplying electric power to the projection unit 3 and the control board 6; and a body 2 in which the projection unit 3, the control board 6 and the battery 7 are arranged. In the image projection device 1, the body 2 includes a protrusion 2D that protrudes in a direction of an optical axis L1 of light, with at least a part of the projection unit 3 arranged in the protrusion 2D, any two of the projection unit 3, the control board 6 and the battery 7 are arranged inside of the body 2 in parallel in the direction of the optical axis L1 of light, and any two of the projection unit 3, the control board 6 and the battery 7 are arranged inside of the body 2 in a row in a vertical direction.SELECTED DRAWING: Figure 10

Description

The present invention relates to an image projection device.

A technique for projecting an image on an arbitrary projection surface using a hand-held image projection device is known.

Patent Document 1 describes that in a projector that is held by one hand for projection, an optical unit that projects an image on a projected surface, a drive circuit that drives the optical unit, and a battery are housed in the housing. There is.

However, Patent Document 1 does not describe the arrangement of the optical unit, the drive circuit, and the battery, and does not give consideration to miniaturization of the device.

An object of the present invention is to realize a miniaturization that is easy to hold in an image projection device.

In order to solve the above-mentioned problems, the image projection device according to one aspect of the present invention includes a projection unit that irradiates light to project an image, a control unit that controls the operation of the projection unit, and the projection unit. In an image projection device having a battery for supplying power to the control unit, a main body in which the projection unit, the control unit, and the battery are arranged, the main body protrudes in the optical axis direction of the light. It has a convex portion, and at least a part of the projection portion is arranged on the convex portion, and any two of the projection unit, the control unit, and the battery are arranged in parallel in the direction of the optical axis of the light. It is arranged in the main body, and any two of the projection unit, the control unit, and the battery are arranged in the main body side by side in the vertical direction.

It is possible to realize miniaturization that is easy to hold in an image projection device.

Perspective view of the image projection device according to the embodiment as viewed from the z positive direction side. Perspective view seen from the z negative direction side of the image projection device according to the embodiment. Perspective view seen from the x-negative direction side of the image projection device according to the embodiment. Front view of the image projection device according to the embodiment as viewed from the x positive direction side. An exploded perspective view of the image projection device Perspective view showing the gripping state of the image projection device Side view showing the gripping state of the image projection device Block diagram of image projection device Block diagram of a modified example of an image projection device Vertical cross-sectional view of the image projection device Enlarged cross section near the tripod mounting hole Vertical cross-sectional view showing a modified example of a tripod mounting hole Perspective cross section near the projection button Side section near the power button Perspective view of the power button and the integrally molded parts of the button group The figure explaining the mounting method of the integrally molded part Diagram illustrating how to install the battery Cross-sectional view showing the mounting state of the battery The figure which shows the deformation example of the pattern of the operation surface of a dial Perspective sectional view showing the mounting position of the dial Cross-sectional view near the tip of the convex part The figure explaining the attachment method of a cover member Vertical cross-sectional view showing the first modification of the internal arrangement Vertical cross-sectional view showing a second modification of the internal arrangement Vertical cross-sectional view showing a third modification of the internal arrangement Vertical cross-sectional view showing a fourth modification of the internal arrangement Vertical cross-sectional view showing the fifth modification of the internal arrangement Vertical cross-sectional view showing the sixth modification of the internal arrangement

Hereinafter, embodiments will be described with reference to the accompanying drawings. In order to facilitate understanding of the description, the same components are designated by the same reference numerals as possible in the drawings, and duplicate description is omitted.

In the following description, the x-direction, the y-direction, and the z-direction are perpendicular to each other. The x direction is the projection direction of the image projection device 1. The y direction is the left-right direction of the projected image of the image projection device 1, and is typically the horizontal direction. The z-direction is the vertical direction of the projected image of the image projection device 1, and is typically the vertical direction.

FIG. 1 is a perspective view of the image projection device 1 according to the embodiment as viewed from the z positive direction side. FIG. 2 is a perspective view of the image projection device 1 according to the embodiment as viewed from the z-negative direction side. FIG. 3 is a perspective view of the image projection device 1 according to the embodiment as viewed from the x-negative direction side. FIG. 4 is a front view of the image projection device 1 according to the embodiment as viewed from the x-positive direction side. FIG. 5 is an exploded perspective view of the image projection device 1. FIG. 6 is a perspective view showing a gripping state of the image projection device 1. FIG. 7 is a side view showing a gripping state of the image projection device 1.

The image projection device 1 shown in FIGS. 1 to 7 is a so-called handy type image projection device that allows an operator to project an image while grasping it with one hand.

The image projection device 1 includes a main body 2, a projection unit 3, and a projection button 4 as a first button. The main body 2 is formed in a shape that can be grasped with one hand. The projection unit 3 irradiates the outside with light to project an image. This light is called projected light, and this image is called a projected image. The projection button 4 switches between a projection state and a non-projection state of the projection unit 3 according to an operation input. The main body 2 has a hollow shape, and the projection portion 3 and other parts are housed inside the main body 2. The projection button 4 may have other functions in addition to the function of switching between the projected state and the non-projected state. Depending on the state of the image projection device 1, the projection button 4 may have another function instead of the function of switching between the projected state and the non-projected state. The function may be implemented.

The projection button 4 is arranged on the surface of the main body 2. The projection button 4 is an element for the user to input an operation such as pressing by physically touching the finger or the like. In the following description, the projection button 4 is referred to as an "operation unit 4" or a "switch 4". It may also be written as. That is, the projection button 4 accepts the operation of the operator. Further, the projection button 4 is connected to a switching unit 18 (see FIG. 8 and the like) provided on the electric circuit. By operating the switching unit 18 in response to the user operation input to the projection button 4, the line 14 (see FIG. 8) is switched between energization and non-energization on the electric circuit, whereby the projection state of the projection unit 3 is switched. , The non-projection state is switched. The operation unit 4 and the switching unit 18 may be integrally formed as one switch component, or may be arranged apart from each other and electrically connected.

The user operation input to the operation unit 4 includes, for example, a pressing operation. The pressing operation includes an operation of pushing a button, an operation of pushing and sliding, a touch panel contact operation, and the like, and also includes an operation of recognizing that the operator has pressed the operation unit 4.

It is possible to irradiate the light L from the projection unit 3 at a timing desired by the operator according to the operation of the projection button 4, and it is possible to stop the irradiation of the light L.

The projection unit 3 is installed on the convex portion 2D at the tip of the main body 2 in the x positive direction so that the projection direction is along the longitudinal direction (x direction) of the main body 2. The convex portion 2D projects along the longitudinal direction (x direction) of the main body 2. The convex portion 2D is integrally formed with the main body 2, and the internal space is communicated with the main body 2. The relationship between the main body 2 and the convex portion 2D can also be said that the main body 2 has the convex portion 2D. Further, the projection unit 3 includes a lens unit 3A, is installed so that the lens unit 3A is exposed from the opening 2C provided at the tip portion 2A in the x positive direction of the convex portion 2D, and is projected from the lens unit 3A. The main body 2 is installed so that the vertical direction of the image is along the z direction and the horizontal direction of the image is along the y direction. When projecting light to the outside, the axis passing through the lens center of the lens unit 3A is defined as the optical axis L1. The projection unit 3 has an optical element such as a lens, and the “optical axis of the projection unit 3” is, for example, the center of the optical axis of these optical elements. It can also be said that the convex portion 2D protrudes along the optical axis of the projection portion 3.

Further, the projection unit 3 is provided with a dial 15 for focusing adjustment, and is exposed to the outside through an opening provided in a part of the convex portion 2D. The operator can adjust the focus of the projected image by operating the dial 15.

Next, the internal structure of the image projection device 1 will be described with reference to FIG.

As shown in FIG. 5, the image projection device 1 includes the above-mentioned projection unit 3 housed inside the main body 2, a control board 6 (control unit), and a battery 7 (power supply). The control board 6 and the battery 7 have a substantially rectangular parallelepiped shape, and are arranged inside the main body 2 in a direction in which the height is lowered in the vertical direction.

The control board 6 controls the operation of the projection unit 3. The control board 6 can be physically configured as a computer system in which a CPU, RAM, ROM, a storage device, an interface, and the like are connected via a bus. Various functions of the control board 6 read and write data in the RAM and the storage device under the control of the CPU by loading predetermined computer software on hardware such as the CPU and RAM, and also have an interface. It is realized by operating other parts such as the projection unit 3 or an external device via the interface.

The battery 7 is a plate-shaped secondary battery that is a power source for supplying electric power to the projection unit 3 and the control board 6.

As shown in FIG. 1, on the surface of the main body 2 on the z-positive direction side, in addition to the projection button 4, a power button 11 as a second button and a button group 12 are provided. The power button 11 is a button for switching the presence / absence of power supply of the image projection device 1 and operating the function of the main power supply. The power button 11 may have other functions in addition to the function of the main power supply, and may perform other functions instead of the function of the main power supply depending on the state of the image projection device 1.

The button group 12 includes a plurality of buttons for operating each function of the other projection device. The power button 11 is arranged on the x-negative direction side of the projection button 4, the button group 12 is arranged on the x-negative direction side of the power button 11, and each button is arranged along the y direction. The button group 12 is a group composed of a plurality of buttons, and in the present embodiment, it is composed of three buttons.

As shown in FIG. 3, connectors 13 such as a USB connector and HDMI (registered trademark) are arranged so as to be exposed on the end surface 2B on the X negative side of the main body 2 so that they can be connected to various external devices by wiring. Has been done. The connectors 13 are installed on, for example, the control board 6.

As shown in FIGS. 1 to 4, 6 and 7, the main body 2 is provided with an upper tapered portion 21A and a lower tapered portion 22A. The upper tapered portion 21A is a tapered portion from the upper surface of the main body 2 toward the side surface. The lower tapered portion 22B is a tapered portion that goes from the lower surface B of the main body 2 or the lower surface 2E of the convex portion 2D toward the side surface of the main body 2.

By providing the upper tapered portion 21A and the lower tapered portion 22B on the main body 2 in this way, the user can easily hold the main body 2. In addition, the handy projector (image projection device 1) is often carried in a bag or a pocket of clothes. The taper such as the upper taper portion 21A and the lower taper portion 22B makes it difficult for the corners of the device to get caught in the bag, pocket, or the like when taking in and out.

In the present embodiment, as shown in FIG. 1, the upper taper portion 21A and the lower taper portion 22B are provided on the entire periphery of the projector (image projection device 1), but are partially provided. It may be configured to be.

FIG. 8 is a block diagram of the image projection device 1. As shown in FIG. 8, the projection unit 3 includes a light emitting unit 31 and a display device 32. The light emitting unit 31 has LEDs 31R, 31G, and 31B. The LEDs 31R, 31G, and 31B are red (R), green (G), and blue (B) light sources, respectively. The display device 32 is an image forming unit that forms a projected image through the light output from the light emitting unit 31 and outputs the projected image to the outside. In this embodiment, DLP (Digital Light Processing) is used as the display device 32. In the following description, the "display device 32" may also be referred to as "DLP 32". The light emitting unit 31 and the DLP 32 may be replaced with other elements capable of exerting their respective functions. That is, although the LED is used as the light emitting unit 31, a halogen lamp or the like may be used. Although DLP is used as the display device, a liquid crystal display device may be used.

In FIG. 8, the information transmission system of the image projection device 1 is shown by a solid line, the power supply system is shown by a thick solid line, and the optical system is shown by a dotted line. As shown in FIG. 8, the information transmission system of the image projection device 1 outputs a control signal from the control board 6 to the light emitting unit 31 of the projection unit 3 and the display device 32 (DLP). Further, in the power supply system of the image projection device 1, power is first supplied from the battery 7 to the control board 6, and then power is supplied from the control board 6 to the light emitting unit 31 and the DLP 32 of the projection unit 3 via the wiring 14. Will be done. Further, in particular, in the present embodiment, the switching unit 18 is arranged on the wiring 14 between the control board 6 and the projection unit 3. The switching unit 18 can be switched between an on state and an off state by the operation input of the switch 4 as an operation unit. FIG. 8 shows a state in which the switching unit 18 is off.

When the switching unit 18 is on, power is supplied to the light emitting unit 31 and DLP 32 of the projection unit 3, and when the switching unit 18 is off, power supply to the light emitting unit 31 and DLP 32 of the projection unit 3 is stopped. On the other hand, power is always supplied from the battery 7 to the control board 6 regardless of whether the switching unit 18 is on or off. As a result, the switching unit 18 maintains the activated state of the control board 6 in response to the operation input to the operation unit 4, and turns on / off the projected state and the non-projected state of the projection unit 3, that is, the light emitting unit 31. , The operating state / stopped state of the DLP 32 can be switched.

In this way, the projection state and the non-projection state of the projection unit 3 can be switched according to the switching between the on state and the off state of the switching unit 18 according to the operation of the switch 4 (projection button 4) by the operator. .. Therefore, the image projection device 1 of the present embodiment can be appropriately set to a non-projection state when it is not necessary to project an image even during operation, and as a result, power consumption is suppressed and the life of the projection unit 3 is extended. The amount of heat generated can be reduced. Further, since the activated state of the control board 6 is maintained even when the projection unit 3 is in the non-projection state, the projection is performed again as compared with the configuration in which both the projection unit 3 and the control board 6 are stopped as in the conventional standby mode, for example. When switching to the state, the rise of the projection unit 3 can be accelerated. As a result, it becomes possible to project an image according to agility by operating the switch of the operator, and the operability of the device can be improved.

The projection button 4 is a push button type switch. Therefore, while the operator is pressing the projection button 4 (that is, while the operation unit 4 is being pressed), the projection unit 3 is in the projection state (the light emitting unit 31 is lit and the DLP 32 is in the operating state), and the operation is performed. When the user's hand is released from the switch 4 (that is, when the operation unit 4 is not pressed), the projection unit 3 is in the non-projection state (the light emitting unit 31 is turned off and the DLP 32 is in the stopped state). As a result, the timing at which the operator wants to project an image and the timing at which the switch 4 is continuously pressed can be matched, and the operator can be provided with a more intuitive operation feeling using the so-called momentary switch. Further, the switch 4 is a button for the operator to switch between projection and non-projection, and can also be called a projection button.

In the example of FIG. 8, a configuration in which the switching unit 18 switches whether or not power is supplied from the control board 6 to both the light emitting unit 31 and the DLP 32 is illustrated, but whether or not only one of the light emitting unit 31 or the DLP 32 is supplied with power is supplied. The switching unit 18 may be arranged at a position on the wiring 14 where the power can be switched. The switching unit 18 may at least switch between a state in which an image is projected from the projection unit 3 to the outside as a projection state and a state in which an image is not projected from the projection unit 3 to the outside as a non-projection state.

FIG. 9 is a block diagram of a modified example of the image projection device 1. The outline of the block diagram shown in FIG. 9 is the same as that in FIG.

As another configuration example of the switching unit 18, as shown in FIG. 9, the MCU 18A for detecting the pressing of the switch 4 is provided, and the projection state is obtained while the pressing of the switch 4 is detected. Power is supplied to the light emitting unit 31 and the display device 32. Then, while the pressing is not detected, the power is not supplied to the light emitting unit 31 and the display device 32 so as to be in the non-projection state. In this case, the control board 6 functions as a switching unit for switching between the projected state and the non-projected state.

In other words, in the configuration shown in FIG. 9, the line 14 between the control board 6 and the projection unit 3 is switched between energization (on state) and non-energization (off state) by the operation input of the switch 4 as the operation unit. As the switching unit, in FIG. 8, the control board 6 electrically switches instead of the switching unit 18 provided on the line 14 and performing physical switching.

The control board 6 can control the projection state and the projection off state of the projection unit 3. The control board 6 incorporates an MCU18A (Micro Controller Unit). The MCU 18A can detect the depressed / non-depressed state of the switch 4 electrically connected to the control board 6.

Further, in the momentary mode, the control board 6 is connected to the control board 6 via the line 14 while the switch 4 is pressed, based on the information on the pressed / non-pressed state of the switch 4 detected by the MCU 18A. Power is supplied to the projection unit 3 to bring it into a projection state.

That is, in the case of the modification shown in FIG. 9, the control board 6 functions as a switching unit for switching whether or not power is supplied to the projection unit 3 in response to the pressing operation of the switch 4 (operation unit).

In FIG. 9, the switch 4 is connected to the ground (GND) and the depressed / non-depressed state of the switch 4 is detected by the change from the reference voltage, but the depressed / non-depressed state of the switch 4 is detected. Is not limited to this if it can be detected.

FIG. 10 is a vertical sectional view of the image projection device 1. In the image projection device 1 according to the embodiment, the positional relationship between the projection unit 3 housed in the main body 2, the control board 6, and the battery 7 can be simply expressed as follows. That is, the projection unit 3 is installed on the convex portion 2D provided so as to project from the main body 2 in the projection direction (x positive direction, of light) of the projection unit 3 (at least a part of the tip side of the projection unit 3 is a convex portion). Including configurations arranged in 2D). Then, any two of the projection unit 3, the control board 6, and the battery 7 are arranged in the main body 2 in parallel in the direction of the optical axis of light (x direction), and the projection unit 3, the control board 6, and the battery 7 are arranged in parallel. Two of the sevens are arranged side by side in the main body 2 along the vertical direction (z direction) of the projected image of the projection unit 3. Among such positional relationships, particularly in the present embodiment, as shown in FIG. 10, the control board 6 is arranged on the opposite side (x negative direction side) of the projection direction with respect to the projection unit 3, and the battery 7 Is arranged below the control board 6 in the vertical direction. That is, the battery 7 is also arranged on the opposite side (x negative direction side) of the projection direction with respect to the projection unit 3 as in the control board 6.

By setting the positional relationship between the projection unit 3, the control board 6, and the battery 7, two of the optical unit (projection unit 3), the control board 6 (control unit), and the battery 7 are horizontal (x direction). The remaining one is arranged side by side in the vertical direction (z direction) with respect to the two horizontal ones. With such a configuration, the image projection device 1 can be miniaturized to a compact size that is easy to hold.

Further, a partition member 8 is arranged inside the main body 2. The partition member 8 separates at least the battery 7 from the projection unit 3 and the control board 6. In particular, in the present embodiment, as shown in FIG. 10, the partition member 8 is a plate-shaped member, and the first surface 85 on the z-negative direction side and the second surface 86 on the z-negative direction side of the pair of main surfaces. Is arranged so that it faces. The battery 7 is arranged on the first surface 85 side of the partition member 8, and the control board 6 and the projection unit 3 are arranged on the second surface 86 side opposite to the first surface 85.

In this way, by classifying only the battery 7 so that it is accommodated in another room in the internal space of the main body 2 by the partition member 8, the LED of the optical unit of the projection unit 3 and the semiconductor of the control board 6 are batteryed. It is possible to keep away from the heat generated from 7 and shield the heat.

Further, as shown in FIG. 10, the upper surface of the main body 2 is preferably a curved surface curved toward the bottom surface B side along the projection direction (x direction). The shape of this curved surface is "curved so as to approach the bottom surface B from the x-axis direction in the cross-sectional shape viewed from the y direction" or "in the curved surface shape of the cross section viewed from the y direction, the center of curvature is the bottom surface rather than the position of the top surface". It can also be expressed as "in the direction of B". Further, the upper surface of the convex portion 2D is also a curved surface similar to the upper surface of the main body 2, and it is preferable that the curved surface of the upper surface of the main body 2 and the curved surface of the upper surface of the convex portion 2D are continuously connected. "Continuous connection" can also mean that the curvatures of both curved surfaces at the connected points are substantially the same. These configurations also make it easier to grip. In other words, the upper surface of the main body 2 is curved so as to project to the side opposite to the bottom surface B side (z positive direction side), and the upper surface of the convex portion 2D is also curved to project to the opposite side to the bottom surface B side. do. Then, the surface where the upper surface of the main body 2 and the upper surface of the convex portion 2D are continuous is curved so as to project to the side opposite to the bottom surface B side.

Further, as shown in FIG. 10, the main body 2 is provided with a female screw portion 17 for a tripod screw for attaching the tripod to the main body 2 so as to open on the lower surface on the z negative direction side. The female screw portion 17 (female screw hole) for the tripod screw is arranged between the battery 7 and the projection portion 3 (or the control board 6). As a result, the tripod screw fixing function can be imparted to the main body 2, and space can be saved without increasing the size of the main body 2.

Further, with reference to FIG. 10, the female screw portion 17 for the tripod screw is the battery 7 and the projection portion 3 or the control board 6 (projection portion 3 in the example of FIG. 10) arranged in parallel with the battery 7 in the projection direction. ) With respect to the gap f in the x direction, which is arranged in a region overlapping the gap f when viewed from the vertical direction (z direction).

That is, in the example of FIG. 10, from the gap f (the space marked with a circle) between the battery 7 and the projection portion 3 arranged in parallel along the projection direction (x direction) and the axis L2 of the female screw portion 17 for the tripod screw. The portion on the x-negative direction side is arranged so as to overlap when viewed from the vertical direction (z direction). As another example, for example, if the above-mentioned gap f is equal to or larger than the diameter of the female screw portion 17 for a tripod screw, the entire female screw portion 17 for a tripod screw overlaps with this gap f when viewed from the vertical direction (z direction). Can be placed in the area.

Further, as shown in FIG. 10, the projection unit 3 is arranged so that at least a part of the projection unit 3 overlaps with the axial direction L2 of the female screw portion 17 for the tripod screw. The angle α formed by the axial direction L2 of the female screw portion 17 for the tripod screw and the optical axis direction L1 of the projection portion 3 is an acute angle. By superimposing the female screw portion 17 for the tripod screw on a part of the projection portion 3, it is possible to further suppress the extension of the main body dimension in the projection direction (x direction) even if the female screw portion 17 for the tripod screw is provided. , Space can be saved.

FIG. 11 is an enlarged cross-sectional view of the vicinity of the tripod mounting hole (female screw portion 17 for tripod screw). As shown in FIG. 11, a step g is provided between the start point position of the female screw portion 17 for a tripod screw and the outer surface of the main body 2. In other words, the insertion surface of the female screw portion 17 for tripod screw is arranged at a position recessed on the inner surface side (z positive direction side) of the main body 2 with respect to the outer surface of the main body 2, and the mounting portion that becomes the outer surface of the main body 2 is on the tripod side. Face contact. By recessing the tripod mounting hole one step in this way, when mounting the tripod holder (male screw side), the tripod holder is well-balanced on the flat surface of the main body exterior surface (bottom surface) without hitting the tripod mounting hole first. Can receive.

FIG. 12 is a vertical sectional view showing a modified example of the tripod mounting hole. As shown in FIG. 12, a part h of the female screw portion 17 for a tripod screw may be arranged so as to enter into the area where the battery 7 partitioned by the partition member 8 is housed inside the main body 2. As an example of realizing such a configuration, the female screw portion for a tripod screw has a female screw portion for a tripod screw so that the angle α formed by the axial direction L2 of the female screw portion 17 for the tripod screw and the optical axial direction L1 of the projection portion 3 is perpendicular. 17 is arranged. In this way, by arranging a part h of the female screw portion 17 for the tripod screw overlapping in the room of the battery 7, it is possible to save space in the longitudinal direction (x direction) of the main body 2. Further, if the axial direction L2 of the female screw portion 17 for a tripod screw and the optical axial direction L1 of the projection portion 3 are orthogonal to each other as shown in FIG. 12, the main body 2 can be gripped with one hand even when the main body 2 is installed on the tripod. Since the main body 2 can be supported at the same angle as when projecting with, even if a tripod is used, projection close to that during one-handed operation is possible. As a result, the tripod can be easily used, and projection can be performed for a longer period of time than when projection is performed while the user holds the tripod, which improves the usability of the image projection device 1.

Further, as shown in FIG. 12, a configuration in which the female screw portion 17 for a tripod screw penetrates through a part of the projection portion 3 (in other words, is recessed into the inner side of the projection portion 3) may be arranged. As a result, even if the tip portion of the female screw portion 17 for the tripod screw on the z-positive direction side overlaps with the projection portion 3, the extension of the main body dimension in the vertical direction can be suppressed, and space can be saved.

As shown in FIGS. 1, 6, 7, and the like, the main body 2 is provided with a dial 15 for adjusting the focus of the projected image projected by the projection unit 3. The dial 15 is arranged on a protruding portion 2F formed by projecting from the side surface 2H on the y-negative direction side of the convex portion 2D of the main body 2 to the y-negative direction side. Further, as shown in FIGS. 2 and 7 as a hatching region, a finger hook portion 2I for holding the main body 2 with one hand is arranged on the convex portion 2D. The finger hook portion 2I is arranged along the y direction with a predetermined width in the x direction on the surface 2E on the z negative direction side of the convex portion 2D. For example, as shown in FIGS. 6 and 7, when the main body 2 is gripped by one hand H, the middle finger is arranged along the finger rest portion 2I. Then, as shown in FIG. 7, the dial 15 and the finger hook portion 2I are arranged so that at least a part thereof overlaps when viewed from the vertical direction (z direction). The operation direction of the dial 15 is the vertical direction. By arranging the dial 15 in this way, for example, as shown in FIG. 6, the dial 15 is arranged and operated at a position where it is easy to operate with the fingertip of the middle finger arranged on the finger rest 2I when grasping with one hand. The dial 15 is arranged so as to rotate in a direction that is easy to rotate. As a result, the dial 15 can be operated with the fingertip of the middle finger as it is in the posture in which the middle finger is placed on the finger rest portion 2I, and the grip of the main body 2 and the operation of the dial 15 can be achieved at the same time.

Further, as shown in FIG. 4, the main body 2 is arranged below the first side surface (that is, the end surface 2G of the protruding portion 2F) on which the dial 15 is provided and the first side surface 2G, and is recessed with respect to the first side surface 2G. It has a second side surface (that is, a side surface 2H on the y-negative side of the convex portion 2D of the main body 2). In other words, it has a first side surface 2G in the lateral direction in the side surface direction of the main body 2 on which the dial 15 is arranged, and another second side surface 2H forming a step below the first side surface 2G, and the first side surface. The lower end of the 2G is arranged below the optical axis center L1, and the distance d2 from the optical axis center L1 to the second side surface 2H is shorter than the distance d1 to the first side surface 2G. With this configuration, the lower surface 2H of the dial 15 is recessed one step, so that the dial 15 can be easily touched and adjusted.

FIG. 13 is a perspective sectional view of the vicinity of the projection button 4. As shown in FIG. 13, a projection button 4 for inputting an operation for switching between a projection state and a non-projection state of the projection unit 3 is provided on the surface of the main body 2. The projection button 4 is a movable member that moves downward when pressed. When the button is moved downward, the protrusion provided on the lower surface of the button presses the switch provided on the control board 6, so that the control board 6 can detect the pressing operation of the projection button 4.

As shown in FIG. 13, the outer edge portion 4A of the projection button 4 projects outward from the surface of the main body 2 (z positive direction side, upper side in FIG. 13). Since the projection button 4 is more convex than the exterior surface (upper cover 21) in this way, it is easy to press the projection button 4. It is not necessary that the entire outer edge portion 4A protrudes upward from the surface of the main body 2, and at least a part thereof may protrude.

Further, as shown in FIG. 13, the central portion 4B of the projection button 4 is recessed from the surface of the main body 2. In other words, the upper surface of the pressing portion of the projection button 4 becomes concave toward the center with respect to the outer circumference. As described above, since the center of the projection button 4 has a concave shape, the thumb fits and is easy to press when pressed. Since the projection button 4 is the button most frequently pressed in the image projection device 1, it is differentiated from other buttons.

FIG. 14 is a side sectional view of the vicinity of the power button 11. As shown in FIG. 14, a power button 11 for inputting an operation for switching the presence / absence of power supply is provided on the surface of the main body 2. The power button 11 is a movable member that moves downward when pressed. When the switch board 23 moves downward, the protrusion provided on the lower surface of the button presses the switch provided on the switch board 23, so that the switch board 23 can detect the pressing operation of the power button 11.

As shown in FIG. 14, the power button 11 is held by an annular support member 19 formed along its outer edge, and the outer end surface (z positive direction side) end surface 19A of the support member 19 is the center of the annular support member 19. It is formed in an inclined shape that inclines so as to be recessed toward the inside of the main body 2 toward the side. As a result, the power button 11 is held by the slope-shaped support member 19, and only the button is movable so that the power switch on the switch board 23 can be pressed.

Further, the power button 11 is recessed on the inner side (z negative direction side) of the main body 2 with respect to the surface of the main body 2. Since the power button 11 is more concave than the projection button 4 and the support member 19 has a slanted shape, the height and shape of the button are differentiated from the projection button 4 to prevent erroneous operation when pressing the button. can. Further, the whole or a part of the outer edge of the support member 19 may be configured to project outward (upper side) from the surface of the main body 2.

FIG. 15 is a perspective view of the integrally molded component 20 of the power button 11 and the button group 12. As shown in FIGS. 1 and 14, the button group 12 is provided on the surface of the main body 2. Each button of the button group 12 is also a movable member that moves downward when pressed. When it moves downward, the protrusion provided on the lower surface of the button presses the switch provided on the switch board 23, so that the switch board 23 can detect the pressing operation of any button of the button group 12.

As shown in FIG. 15, the button group 12 and the power button 11 are integrally formed by a single integrally molded component 20. The integrally molded component 20 has a portion corresponding to the power button 11 and the button group 12, and a connecting portion 20A connecting these portions. By fixing the connecting portion 20A to the upper cover 21, the power button 11 and the button group 12 can be individually moved.

The integrally molded part 20 is, for example, entirely formed of an elastic member. Alternatively, the connecting portion 20A and the button portion may be molded of different materials, such as molding the connecting portion with a resin and molding the button portion with an elastic member such as rubber. In short, any material may be used as long as the power button 11 and the button group 12 can be individually moved.

FIG. 16 is a diagram illustrating a method of attaching the integrally molded component 20. As shown in FIG. 16, the integrally molded component 20 is pressed and attached to the upper cover 21 of the main body 2 by the switch board 23. The switch board 23 is provided with a power switch pressed by the power button 11 and a switch group pressed by the button group 12. The switch board 23 is attached to the upper cover 21 of the main body 2 by pressing the integrally molded component 20 assembled from the inside of the upper cover 21 of the main body 2. Further, as shown in FIG. 16, a support member 19 is arranged between the integrally molded part 20 and the upper cover 21, and the portion of the power button 11 of the integrally molded component 20 is located in the central hole portion of the support member 19. It will be combined. In this way, the power button 11, the button group 12, and the switch board 23 are integrally attached to the upper cover 21, and the switch board 23 can be integrally removed, so that maintainability can be improved.

As shown in FIG. 5, the projection unit 3, the control board 6, and the battery 7 are attached to the upper cover 21 of the main body 2 in a state of being fixed to the partition member 8 and integrally gathered. The projection unit 3 is fixed to the projection unit installation unit 81 arranged on the x positive direction side and the z positive direction side of the partition member 8. The control board 6 is fixed to the control board mounting portion 82 arranged on the x-negative direction side and the z-positive direction side of the partition member 8. The battery 7 is fixed to the battery installation portion 83 arranged on the x-negative direction side and the z-negative direction side of the partition member 8. Then, the partition member 8 in which the projection unit 3, the control board 6, and the battery 7 are fixed to the projection unit installation unit 81, the control board installation unit 82, and the battery installation unit 83, respectively, is connected and fixed to the upper cover 21. ..

With this configuration, the projection unit 3, the control board 6, and the battery 7 are integrally configured by being pressed and fixed to the partition member 8, and are attached and detached in the vertical direction (z direction) with respect to the upper cover 21 of the main body 2. Is possible. Further, if the lower cover 22 is removed from the main body 2, the image projection device 1 can be disassembled in a state where the projection unit 3, the control board 6, and the battery 7 are integrally connected to the upper cover 21 via the partition member 8. By being able to remove them integrally in this way, maintainability (replacement workability) can be improved. For example, it is possible to easily replace the battery 7 or perform maintenance work once it is removed.

FIG. 17 is a diagram illustrating a method of attaching the battery 7. FIG. 18 is a cross-sectional view showing a mounting state of the battery 7. As shown in FIGS. 17 and 18, the side surface of the battery 7 in the width direction (y direction) orthogonal to the vertical direction (z direction) is fixed to the partition member 8 via the elastic member 24A. For example, a sheet-shaped elastic member 24A having a predetermined thickness is arranged on a surface of the inner wall of the battery installation portion 83 of the partition member 8 that comes into contact with the side wall of the battery 7 when the battery 7 is installed. The elastic member 24A is, for example, rubber.

As shown in FIG. 18, when the battery 7 is installed, the elastic member 24A is interposed in the gap between the side wall of the battery 7 and the inner wall of the battery installation portion 83, and the side surface of the battery 7 presses the elastic member 24A toward the inner wall side. The urging force of the elastic member 24A is applied to the battery 7. As a result, the battery 7 is more firmly sandwiched by the inner wall of the battery mounting portion 83, so that the battery 7 can be firmly fixed by the battery mounting portion 83 of the partition member 8. Further, since the elastic member 24A is sandwiched and not fixed by a screw or the like, the battery 7 can be easily removed from the battery mounting portion 83 of the partition member 8 when the battery is replaced.

Further, the battery 7 is installed with an elastic member 24B interposed between the upper upper surface or the lower lower surface in the vertical direction (z direction) and the partition member 8 or the main body 2 facing the surface. In the examples of FIGS. 17 and 18, the elastic member 24B is interposed in the gap between the upper surface of the battery 7 and the battery installation portion 83 of the partition member 8 facing the upper surface. Further, as shown in FIG. 18, the elastic member 24B is also interposed in the gap between the lower surface of the battery 7 and the inner wall of the lower cover 22 of the main body 2 facing the lower surface. By sandwiching the battery 7 between the elastic members 24B from both sides in the vertical direction in this way, it is possible to prevent the battery 7 from generating vibration or moving with respect to the main body 2. The elastic member 24B may be arranged only on either the upper surface or the lower surface of the battery 7.

FIG. 19 is a diagram showing a modified example of the pattern on the operation surface of the dial 15. As described with reference to FIG. 7 and the like, in the present embodiment, a slit recessed on the rotation axis L3 side of the dial 15 is formed on the outer peripheral surface used for the rotation operation of the dial 15, and the shape of the slit is in the axial direction. It is a line shape formed along the line. However, the shape of this slit may be other than linear. For example, as shown in the operation surfaces 15A, 15B, and 15C (the outer peripheral surface of the cylindrical dial) shown in FIGS. 19 (A), (B), and (C), the shape of the slit is linear such as rhombus, ellipse, and circle. The shape may be other than. By having the dial 15 having a slit, it is possible to easily catch a finger, improve the grip force when turning the dial 15, and make it easy to turn.

FIG. 20 is a perspective sectional view showing a mounting position of the dial 15. As shown in FIG. 20, the rotation shaft L3 of the dial 15 is housed inside the outer surface of the main body 2 (in the example of FIG. 20, the y positive direction side inside the main body 2 from the side surface 2G). With this configuration, the protrusion of the dial 15 in the outer diameter direction is reduced, and space can be saved.

As shown in FIG. 5, a speaker 16 arranged inside the main body 2 is provided. The speaker 16 is fixed to the partition member 8. For example, as shown in FIG. 5, the speaker 16 is arranged along the side surface of the battery 7 and is pressed and fixed to the speaker installation portion 84 adjacent to the battery installation portion 83 of the partition member 8. For example, the speakers 16 are a pair and are arranged on the opposite side surfaces of the battery 7. When installed inside the main body 2, these pair of speakers 16 are arranged so as to emit sound in a direction (both sides in the y direction) orthogonal to the optical axis direction (x direction) of the projection unit 3.

Further, the speaker 16 is pressed and fixed to the speaker installation portion 84 of the partition member 8 via the elastic body 16A. The periphery of the speaker 16 is covered with the elastic body 16A so as to be in contact with at least the speaker installation portion 84 of the partition member 8 via the elastic body 16A. The entire circumference of the speaker 16 may be covered with the elastic body 16A. As a result, the elastic body 16A can absorb the vibration from the outside, so that the speaker 16 can be less affected by the vibration. Further, since the speaker 16 is pressed against the partition member 8 via the elastic body 16A instead of being fixed with screws, the speaker 16 can be easily attached to and detached from the partition member 8.

FIG. 21 is a cross-sectional view of the vicinity of the tip portion 2A of the convex portion 2D of the main body 2. FIG. 22 is a diagram illustrating a method of attaching the cover member 25. As shown in FIG. 21, the projection unit 3 is arranged so as to project an image to the outside from the opening 2C provided in the lower cover 22 of the main body 2. The opening 2C is provided with a cover member 25 that protects the lens portion 3A of the projection portion 3. As shown in FIG. 22, the cover member 25 is inserted between a pair of vertical wall portions 26 erected on the inner wall of the lower cover 22 with the opening 2C interposed therebetween, and is the most of the pair of vertical wall portions 26. At the lower part, the support portion 27 is formed by advancing from the end surface on the x-negative direction toward the central opening 2C side along the y direction, and is pressed and fixed to the gap between the inner wall of the lower cover 22. As a result, as shown in FIG. 21, the cover member 25 is arranged at a position distant from the lens portion 3A in the projection direction (x positive direction side). With this configuration, scratches and stains on the lens portion 3A of the projection portion 3 can be prevented. By closing the opening 2C for the projection unit 3 to project an image with the cover member 25, it is possible to prevent the user's finger or a thin rod-shaped object from being inserted from the outside, and the lens unit 3A of the projection unit 3 can be prevented from being inserted. Can no longer be touched directly from the outside.

Further, the cover member 25 is transparent or translucent, and transmits the light projected from the projection unit 3. As a result, the light projected from the lens unit 3A of the projection unit 3 can be projected without being blocked by the cover member 25. As the material of the cover member 25, for example, resins such as acrylic, polycarbonate and polystyrene, glass and the like can be applied.

As shown in FIG. 20 and the like, the main body 2 is formed by a combination of an upper cover 21 arranged on the upper side in the vertical direction and a lower cover 22 arranged on the lower side. In the mating portion 28 between the upper cover 21 and the lower cover 22, the upper convex portion 29 extending along the upper mating surface of the upper cover 21 and protruding from the upper mating surface and the lower mating portion of the lower cover 22 The lower convex portion 30 extending along the surface and protruding from the lower mating surface overlaps the upper mating surface and the lower mating surface along the extending direction (that is, the x direction or the y direction). .. In the example of FIG. 20, the upper convex portion 29 is formed so as to project in the z negative direction from the upper concatenated surface, and the lower convex portion 30 is formed so as to project in the z positive direction from the lower concatenated surface, and is formed in the y direction (main body 2). It is arranged so as to overlap when viewed from the direction connecting the inside and the outside on the side surface of. With this configuration, the upper cover 21 and the lower cover 22 can be reliably aligned with each other. Therefore, it is preferable that the upper cover 21 and the lower cover 22 are displaced in the x-direction and the y-direction when the main body 2 is gripped and operated. It can be prevented and more stable operation becomes possible.

Further, as described with reference to FIG. 14 and the like, the power button 11 is held by an annular support member 19 formed along the outer edge thereof. The support member 19 may be formed of a light guide material, and a light source that causes the support member 19 to emit light may be arranged inside the main body 2. This makes it possible to inform the user more clearly of the position of the power button 11. Further, as described above, as shown in FIG. 20, since the upper convex portion 29 and the lower convex portion 30 are superimposed on the combined portion 28 of the upper cover 21 and the lower cover 22, the gap between the combined portions 28 is formed. It is possible to prevent light leakage from.

A modified example of the internal arrangement of the main body 2 of the image projection device 1 will be described with reference to FIGS. 23 to 28. FIG. 23 is a vertical sectional view showing a first modification of the internal arrangement. In the first modification shown in FIG. 23, the partition member 8A individually separates the battery 7, the projection unit 3, and the control board 6 inside the main body 2. In the configuration of the embodiment shown in FIG. 10 and the like, since the battery 7 can be a heat source, only the battery 7 is divided into a separate room from other elements. However, the projection unit 3 and the control board 6 can also be different heat sources. Therefore, as shown in FIG. 23, by partitioning the internal space so that the battery 7, the projection unit 3, and the control board 6 are arranged in separate rooms inside the main body 2, the influence of the heat generated by one element on the other elements. Can be further reduced.

Further, any two of the projection unit 3, the control board 6, and the battery 7 are configured in parallel in the direction of the optical axis of the light of the projection unit 3, and any two of them are above and below the projected image of the projection unit 3. Any configuration may be used as long as they are arranged along the direction. Therefore, except for the configuration in which only the projection unit 3 shown in FIG. 10 or the like is located in the front (x positive direction side), the control board 6 is arranged in the upper part of the rear (x negative direction side), and the battery 7 is arranged in the lower part of the rear. It may be arranged as. The specific arrangement is illustrated below.

FIG. 24 is a vertical cross-sectional view showing a second modification of the internal arrangement. In the second modification shown in FIG. 24, the partition member 8B accommodates only the projection portion 3 in the convex portion 2D in front of the main body 2, and the battery 7 is in the upper part behind the main body 2 with respect to the projection portion 3, and the control board. 6 is placed below the battery 7.

FIG. 25 is a vertical cross-sectional view showing a third modification of the internal arrangement. In the third modification shown in FIG. 25, the partition member 8C accommodates the projection unit 3 and the control board 6 in the convex portion 2D in front of the main body 2, arranges the control board 6 above the projection unit 3, and arranges the battery 7. Is arranged behind the main body 2 with respect to the projection unit 3.

FIG. 26 is a vertical cross-sectional view showing a fourth modification of the internal arrangement. In the fourth modification shown in FIG. 26, the partition member 8D accommodates the projection unit 3 and the control board 6 in the convex portion 2D in front of the main body 2, arranges the control board 6 below the projection unit 3, and arranges the battery 7. Is arranged behind the main body 2 with respect to the projection unit 3.

FIG. 27 is a vertical cross-sectional view showing a fifth modification of the internal arrangement. In the fifth modification shown in FIG. 27, the partition member 8E accommodates the projection unit 3 and the battery 7 in the convex portion 2D in front of the main body 2, arranges the battery 7 below the projection unit 3, and arranges the control board 6. It is arranged behind the main body 2 with respect to the projection unit 3.

FIG. 28 is a vertical cross-sectional view showing a sixth modification of the internal arrangement. In the sixth modification shown in FIG. 28, the partition member 8F accommodates the projection unit 3 and the battery 7 in the convex portion 2D in front of the main body 2, arranges the battery 7 above the projection unit 3, and provides the control board 6. It is arranged behind the main body 2 with respect to the projection unit 3.

The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. These specific examples with appropriate design changes by those skilled in the art are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the above-mentioned specific examples, its arrangement, conditions, a shape, and the like are not limited to those exemplified, and can be appropriately changed. The combinations of the elements included in each of the above-mentioned specific examples can be appropriately changed as long as there is no technical contradiction.

1 Image projection device 2 Main body 2D Convex part 21 Top cover 22 Bottom cover 3 Projection part 4 Projection button 4A Outer edge part 4B Central part 6 Control board (control part)
7 Battery 8, 8A-8F Partition member 11 Power button 12 Button group 15 Dial
16 Speaker 16A Elastic body 17 Female thread for tripod screw 19 Support member 20 Integrally molded part 23 Switch board 24A, 24B Elastic member 25 Cover member L Optical L1 Optical axis L2 Tripod mounting hole axis L3 Dial axis d1 Protruding part and optical Distance from the axis d2 Distance between the side surface of the main body and the optical axis

Japanese Patent No. 4994744

Claims (30)

A projection unit that irradiates light and projects an image,
A control unit that controls the operation of the projection unit,
A battery that supplies electric power to the projection unit and the control unit,
A main body in which the projection unit, the control unit, and the battery are arranged inside,
In an image projection device with
The main body has a convex portion protruding in the optical axis direction of the light, and the main body has a convex portion.
At least a part of the projection portion is arranged on the convex portion, and the projection portion is arranged on the convex portion.
Any two of the projection unit, the control unit, and the battery are arranged in the main body in parallel in the direction of the optical axis of the light.
Any two of the projection unit, the control unit, and the battery are arranged in the main body side by side in the vertical direction.
Image projection device. A partition member arranged inside the main body is provided.
The partition member separates at least the battery from the projection unit and the control unit.
The image projection device according to claim 1. The control unit is arranged on the opposite side of the projection direction of the projection unit with respect to the projection unit.
The battery is arranged below the control unit in the vertical direction.
The image projection device according to claim 2. The battery is arranged on the first surface side of the partition member, and the control unit and the projection unit are arranged on the second surface side opposite to the first surface.
The image projection device according to claim 3. The partition member individually separates the battery, the projection unit, and the control unit inside the main body.
The image projection device according to any one of claims 2 to 4. The main body has a female screw portion for a tripod screw, and has a female screw portion.
The female screw portion for the tripod screw is from the vertical direction with respect to the gap formed between the battery and the projection unit or the control unit arranged in parallel along the direction of the optical axis of the battery and the light. Placed in an area that overlaps when viewed,
The image projection device according to any one of claims 1 to 5. The main body has a female screw portion for a tripod screw, and has a female screw portion.
The female screw portion for a tripod screw is arranged between the battery and the projection unit or the control unit arranged in parallel along the direction of the optical axis of the battery and the light.
The image projection device according to any one of claims 1 to 5. It has a dial that adjusts the focus of the image projected by the projection unit.
The dial is arranged on the side surface of the convex portion.
A finger rest for holding the main body with one hand is arranged on the convex portion.
The dial and the finger rest are arranged so that at least a part thereof overlaps when viewed from the vertical direction.
The operation direction of the dial is the vertical direction.
The image projection device according to any one of claims 1 to 7. The main body has a first side surface on which the dial is provided, and a second side surface which is arranged below the first side surface and is formed by being recessed with respect to the first side surface.
The image projection device according to claim 8. The projection portion is arranged so that at least a part of the projection portion overlaps with the axial direction of the female screw portion for the tripod screw, and the axial direction of the female screw portion for the tripod screw and the optical axis of the projection portion. The angle formed by the direction is an acute angle,
The image projection device according to claim 6 or 7. A part of the female screw portion for the tripod screw enters and is arranged in the area where the battery is housed, which is partitioned by the partition member inside the main body.
The image projection device according to claim 10. The angle formed by the axial direction of the female screw portion for the tripod screw and the optical axis direction of the projection portion is a right angle.
The image projection device according to claim 6 or 7. A step is provided between the starting point position of the female screw portion for the tripod screw and the outer surface of the main body.
The image projection device according to any one of claims 6, 7, 10 to 12. A projection button for inputting an operation for switching between a projection state and a non-projection state of the projection unit is provided on the surface of the main body.
The outer edge of the projection button protrudes from the surface.
The image projection device according to any one of claims 1 to 13. The central part of the projection button is recessed from the surface.
The image projection device according to claim 14. A power button for inputting an operation to switch the power supply / non-supply is provided on the surface of the main body.
The power button is held by an annular support member formed along its outer edge, and the outer end face of the support member is inclined so as to be recessed toward the inner side of the main body toward the center side of the annular. Formed in a shape,
The image projection device according to any one of claims 1 to 15. The power button is recessed with respect to the surface of the body.
The image projection device according to claim 16. A group of buttons is provided on the surface of the main body, and the group of buttons and the power button are single integrally molded parts.
The image projection device according to claim 16 or 17. It has a switch board provided with a power switch pressed by the power button and a switch group pressed by the button group.
The switch board is attached to the main body by pressing the integrally molded component assembled from the inside of the main body.
The image projection device according to claim 18. The main body is formed by a combination of an upper cover arranged on the upper side in the vertical direction and a lower cover arranged on the lower side.
A partition member arranged inside the main body is provided.
The projection unit, the control unit, and the battery are fixed to the partition member and attached to the upper cover.
The image projection device according to any one of claims 1 to 19. A partition member arranged inside the main body is provided.
In the battery, the side surface in the width direction orthogonal to the vertical direction is fixed to the partition member via an elastic member.
The image projection device according to any one of claims 1 to 20. The battery is installed with an elastic member interposed between the upper upper surface or the lower lower surface in the vertical direction and the partition plate or the main body facing the upper surface or the lower surface.
The image projection device according to claim 21. The body has a dial that adjusts the focus of the image projected by the projection unit.
A slit recessed on the rotation axis side of the dial is formed on the outer peripheral surface used for the rotation operation of the dial.
The shape of the slit includes a rhombus, a circle, an ellipse, and a linear shape.
The image projection device according to any one of claims 1 to 22. The body has a dial that adjusts the focus of the image projected by the projection unit.
The axis of rotation of the dial is housed inside with respect to the outer surface of the main body.
The image projection device according to any one of claims 1 to 23. It is equipped with a speaker placed inside the main body.
The speaker is fixed to the partition member.
The image projection device according to any one of claims 1 to 24. The speaker is surrounded by an elastic body and is pressed and fixed to the partition member via the elastic body.
The image projection device according to claim 25. The main body is formed by a combination of an upper cover arranged on the upper side in the vertical direction and a lower cover arranged on the lower side.
In the mating portion between the upper cover and the lower cover, an upper convex portion extending along the upper mating surface of the upper cover and protruding from the upper mating surface and a lower mating surface of the lower cover. The lower convex portion extending along the line and projecting from the lower mating surface overlaps the upper mating surface and the lower mating surface along the extending direction.
The image projection device according to any one of claims 1 to 26. A power button for inputting an operation to switch the power supply / non-supply is provided on the surface of the main body.
The power button is held by an annular support member formed along its outer edge.
The support member is formed of a light guide material, and a light source that causes the support member to emit light is arranged inside the main body.
The image projection device according to claim 27. The main body is formed by a combination of an upper cover arranged on the upper side in the vertical direction and a lower cover arranged on the lower side.
The projection unit is arranged so as to project an image to the outside through an opening provided in the lower cover.
A cover member that protects the lens of the projection portion is pressed against the lower cover and fixed to the opening.
The cover member is arranged at a position farther from the lens in the projection direction of the projection unit.
The image projection device according to any one of claims 1 to 28. The cover member is transparent or translucent and transmits light projected from the projection unit.
The image projection device according to claim 29.

Images