TWM556873U - Image projection device for portable electronic device - Google Patents

Abstract

An image projection device for a portable electronic device is provided. The image projection device includes a connecting housing and a projection device. The portable electronic device is disposed into the connecting housing and electrically connected with the connecting housing for transmitting a display screen signal to the connecting housing. The connection housing is detachably and rotatably disposed on the projection device for receiving the display screen signal by a first connecting portion of the connection housing electrically connects a second connecting portion of the projection device. The projection device is able to project a portrait projecting image or a landscape projecting in a predetermined direction while the portable electronic device and the connection housing are rotated to a first position or a second position and the two connecting portion keep in electrically connection.

Description

Image projection device for portable electronic device

The present invention relates to the field of a projection device, and more particularly to an image projection device for a portable electronic device applied to project a display screen of a portable electronic device.

With the advancement and evolution of technology, portable electronic devices are inseparable from human life. Human dependence on portable electronic devices is gradually increasing. Portable electronic devices are more portable, and smart phones are most integrated into human life. Most people store multimedia images, photos, work materials, etc. in their smart phones to view or watch them when they need them. However, due to the limitation of the display size of the smart phone, when the stored data in the smart phone is to be viewed by many people, there are many inconveniences.

Therefore, at this stage, a micro-projector has been developed, which can be connected to a smart phone through a wired or wireless manner to project a display image of the smart phone onto a projection screen or a wall surface for multiple people to simultaneously watch. . In order to avoid the complicated setting of the consumer and the wireless image projection and the image transmission efficiency during projection, the micro projector is connected to the smart phone by means of a cable. The other part of the micro-projector can be attached to the smart phone, and can be carried by the user when carrying the smart phone. However, when such a micro-projector corresponds to a straight display screen or a horizontal display screen of a smart phone, it is usually necessary to greatly change the state of the smart phone mounted on the desktop or the posture of the operator or the viewer to be appropriate. Watching the display screen causes inconvenience in use.

As mentioned above, the creators of this creation have designed an image projection device for portable electronic devices through years of painstaking research, in order to improve the lack of the prior art, thereby enhancing the implementation and utilization of the industry.

In view of the above-mentioned problems of the prior art, the object of the present invention is to provide an image projection apparatus for a portable electronic device to improve the problems caused by the above-mentioned prior art.

Based on the above objects, the present invention provides an image projection apparatus for a portable electronic device, which is applied to a portable electronic device including a connection housing and a projection device. The connecting housing has an elongated shell-like structure to have an accommodating space; the accommodating space is configured to accommodate the portable electronic device and expose the display surface of the portable electronic device; the receiving space has an output input port, and the electrical connection is portable An output input slot of the electronic device receives the display signal of the portable electronic device. The connecting housing has a first connecting portion with respect to an outer surface of the display surface, and the first connecting portion is electrically connected to the output input port. The outer surface of the projection device has a second connecting portion; the connecting housing is detachably and rotatably disposed on the projection device such that the first connecting portion is electrically connected to the second connecting portion; the projection device receives the display screen signal, and the projection The processing module of the device controls the projection module of the projection device to project a screen image to project a projection image in a predetermined direction. Wherein, when the first connecting portion and the second connecting portion are electrically connected, when the portable electronic device and the connecting housing are rotated to the first position relative to the projection device, the projection module projects a straight shape in a predetermined direction. The image is projected, and when the portable electronic device and the connection housing are rotated to the second position relative to the projection device, the projection module projects a horizontal projection image in a predetermined direction.

Preferably, the first connecting portion comprises a circular groove and a plurality of annular electrical contact faces arranged in a concentric manner, the plurality of annular electrical contact faces are disposed at the bottom of the circular groove; and the second connecting portion comprises the annular rib And a plurality of electrically conductive bumps having a plurality of electrical contact bumps, wherein the annular ribs are embedded in the circular grooves corresponding to the circular grooves; the plurality of electrical contact bumps correspond to the plurality of annular electrical contact faces to respectively contact the annular electrical contacts surface.

Preferably, the plurality of annular electrical contact faces are at least three, and each of the annular electrical contact faces has a disconnected region; the plurality of electrical contact bumps correspond to at least three, and the outward direction of the annular ribs Arranged in a line.

Preferably, the plurality of annular electrical contact faces are at least three, and at least two annular electrical contact faces are symmetrically disposed at a center of the circular groove, and each of the annular electrical contact faces has a second breaking region; The plurality of electrical contact bumps correspond to at least three, and the at least two electrical contact bumps are symmetrically disposed at the center of the annular ribs, and are arranged in a line shape from the center of the annular ribs outward.

Preferably, the second connecting portion includes a pivot shaft, the pivoting shaft is rotatably disposed on the projection device, and the electrical contact bump is disposed on the pivot shaft and the projection device is electrically connected to the electric device. The contact bump is rotatably embedded in the first connecting portion to enable the connecting housing to rotate relative to the projection device.

Preferably, the connection housing comprises a surrounding shell portion and a component receiving portion; the surrounding housing portion forms an accommodating space to surround the periphery of the portable electronic device, and the component accommodating portion is disposed on a side surrounding the shell portion and is located at the portable electronic device The back of the device and partially obscures the back of the portable electronic device.

Preferably, the connection housing further includes a power supply unit disposed in the component receiving portion and electrically connected to the output input port and the first connection portion for transmitting power to the portable electronic device and the projection device.

Preferably, the projection device further comprises a power supply unit configured to provide power required by the projection device, and the power supply unit is electrically connected to the second connection portion to transmit power to the connection housing or the portable electronic device.

Preferably, the projection device is further provided with a support leg with respect to one side of the connection housing.

Preferably, the projection device has a recess corresponding to the shape of the support leg with respect to one side of the connecting housing, and the support leg is slidably disposed in the recess.

The technical features of the present invention will be described in detail below with reference to the accompanying drawings in the specific embodiments, so that those skilled in the art can readily understand the purpose, technical features, and advantages of the present invention.

The embodiments of the image projection apparatus of the portable electronic device according to the present invention will be described below with reference to the related drawings. For ease of understanding, the same elements in the following embodiments will be denoted by the same reference numerals.

In the description of this creation, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to has a specific orientation and is constructed in a specific orientation. And operation, so can not be understood as a limitation on this creation. Moreover, the terms "first", "second", and "third" are used for the purpose of description only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", "connected", and "set" should be understood broadly, unless otherwise clearly defined and limited, for example, it may be a fixed connection, It may be a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meaning of the above terms in the present creation can be understood in a specific case for those of ordinary skill in the art.

Further, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

Please refer to FIG. 1 to FIG. 3 , which are respectively a first exploded view, a second exploded view and a block diagram of the first embodiment of the image projection device of the portable electronic device. As shown in the figure, the image projection device 100 of the portable electronic device of the present invention is applied to a portable electronic device 9 such as a smart phone or a tablet computer (in this embodiment, a smart phone will be used as an exemplary aspect, but In this case, the connection housing 10 and the projection device 20 included in the image projection device 100 are used to indirectly transfer the image of the portable electronic device 9 to the projection device 20 via a physical electrical connection. Projection.

The connecting housing 10 has a substantially elongated shell-like structure, so as to have an accommodating space 11 for accommodating the portable electronic device 9. When the portable electronic device 9 is placed in the accommodating space 11, the display surface 91 on the front of the portable electronic device 9 can be exposed to facilitate browsing by the user. In addition, the accommodating space 11 has an output input port 12, which is input corresponding to the position of the output input slot 92 of the portable electronic device 9, for example, when the output input slot 92 is set to be portable. When the electronic device 9 is below, the output input port 12 is correspondingly disposed below the accommodating space 11. Therefore, when the portable electronic device 9 is received in the accommodating space 11, the output input port 12 is inserted into the output input slot 92 of the portable electronic device 9, so that the display screen signal 93 of the portable electronic device 9 can be input via the output port. 12 and the output input slot 92 are electrically connected to the connection housing 10. In addition, the outer surface (ie, the back surface) of the connecting housing 10 with respect to the display surface 91 has a first connecting portion 13 , and the first connecting portion 13 is electrically connected to the output of the connecting housing 10 via a physical circuit. The display interface signal 93 can be transmitted to the projection device 20 by the electrical connection between the first connection portion 13 and the projection device 20; wherein the electrical connection between the first connection portion 13 and the projection device 20 will be The following description will not be described in detail here.

On the other hand, the projection device 20 includes a second connecting portion 21, a processing module 22, and a projection module 23. The second connecting portion 21 is provided on the outer surface (ie, the front surface) of the projection device 20 corresponding to the first connecting portion 13 . Therefore, when the connection housing 10 is detachably and rotatably disposed on the projection device 20, for example, the back surface of the connection housing 10 abuts against the front surface of the projection device 20, the first connection portion 13 can be coupled to the second connection portion 21 There is substantial contact to achieve an electrical connection between the two. The processing module 22 can be a central processing unit (CPU) or a microprocessor (Micro-Processing Unit), which is mainly used to control the operation of each component of the projection device 20. The projection module 23 projects the projected image I in a predetermined direction D, which may include optical elements, light sources, displays, etc., which are well known to those skilled in the art and which can enlarge or reduce the projected image I. When the first connecting portion 13 and the second connecting portion 21 are electrically connected, the projection device 20 receives the display screen signal 93 from the portable electronic device 9 through the connection housing 10; at this time, the processing module 22 controls the projection mode. The group 23 projects the display image signal 93 in a predetermined direction D (see FIGS. 4 and 5) to project a projected image I (see FIGS. 4 and 5), for example, projection from above the projection device 20. Incidentally, in the process of transmitting or projecting the above signal, in another embodiment, it may be supplemented by an application (APP) installed by the portable electronic device 9.

Further, the first connecting portion 13 includes a circular groove 131 and a plurality of annular electrical contact faces 132 disposed concentrically, and a plurality of annular electrical contact faces 132 are disposed at the bottom of the circular groove 131. Correspondingly, the second connecting portion 21 includes an annular rib 211 and a plurality of elastic contact bumps 212. The plurality of electrical contact bumps 212 are disposed in the region surrounded by the annular rib 211. . The outer shape of the annular rib 211 corresponds to the outer shape of the circular groove 131. For example, the outer diameter of the annular rib 211 is just equal to or slightly smaller than the diameter of the circular groove 131, so when the connection housing 10 is disposed on the projection In the case of the device 20, the annular rib 211 can be embedded in the circular groove 131, and the corresponding plurality of electrical contact bumps 212 can respectively contact the annular electrical contact surface 132 to achieve a physical electrical connection. The first connecting portion 13 is a circular groove 131 and a plurality of annular electrical contact faces 132 disposed in a concentric manner, and the second connecting portion 21 is an annular rib 211 and a plurality of electrical contact bumps 212 disposed correspondingly. Therefore, when the portable electronic device 9 and the connection housing 10 are rotated relative to the projection device 20, the electrical contact bumps 212 can still contact the annular electrical contact surface 132, so that the first connection portion 13 and the second connection portion 21 remain Can maintain electrical connection. Incidentally, the magnetic grooves of the magnetic dissimilar elements may be respectively disposed under the circular groove 131 and the annular rib 211, and the magnetic coupling between the two magnetically different magnetic elements may be used to connect the casing. The detachable arrangement between the body 10 and the projection device 20 is more stable, avoiding the occurrence of separation from each other.

It is worth mentioning that the connecting housing 10 includes a surrounding shell portion 14 and a component receiving portion 15; wherein the surrounding portion 14 forms an accommodating space 11 to surround the portable electronic device 9, and the component housing portion 15 is disposed on a side of the surrounding shell portion 14 and is located on the back of the portable electronic device 9 to partially shield the back surface of the portable electronic device 9, for example, partially obscuring the camera module on the back of the portable electronic device 9. The back of the portable electronic device 9. In addition, a power supply unit 16 can be disposed in the component receiving portion 15 , and is electrically connected to the output input port 12 and the first connecting portion 13 . Therefore, the connection housing 10 can supply power to the portable electronic device 9 and the projection device 20. That is, the connection housing 10 can separately charge the portable electronic device 9; or, as a mobile power source of the projection device when projection is used. Thereby, the utility of the image projection apparatus 100 of the portable electronic device of the present invention can be increased. Certainly, the component housing portion 15 may be provided with other circuit modules for connecting the display screen signal 93 of the portable electronic device 9 and performing power transmission.

On the other hand, the projection device 20 may have a recess 25 with respect to one side (ie, the back surface) of the connection housing 10, and a support leg 26 corresponding to the shape of the recess 25 may be disposed in the recess 25. The projection angle can be slightly raised by the setting of the support leg 26, so that the user can view the projected image I more conveniently, and when the support leg 26 is not in use, it can be accommodated in the recessed groove 25.

Please refer to FIG. 4 and FIG. 5 together, which are respectively a first application schematic diagram and a second application schematic diagram of the first embodiment of the image projection apparatus of the portable electronic device.

As shown in the figure, by the predetermined arrangement of the first connecting portion 13 and the second connecting portion 21, the portable electronic device 9 and the connecting housing 10 can be held at the first connecting portion 13 and the second connecting portion 21 at this time. In the case of electrical connection, the projection device 20 is rotated to the first position A, for example, the portable electronic device 9 is in an upright position. Also, since the portable electronic device 9 is in an upright position, the portable electronic device 9 is based on the sensing result of the built-in acceleration sensor (G-sensor), and the display surface 91 displays a straight display image, so that the projection module 23 The projected image I of the straight form is projected in the predetermined direction D.

Alternatively, the portable electronic device 9 and the connection housing 10 can be rotated relative to the projection device 20 to the second position B, for example, in a portable state in which the first connection portion 13 and the second connection portion 21 are electrically connected. The electronic device 9 is a horizontal position for reference. At this time, the portable electronic device 9 is based on the sensing result of the built-in acceleration sensor (G-sensor), and the display surface 91 displays a horizontal display image, so that the projection module 23 projects the horizontal direction in the predetermined direction D. Projection image I.

The image projection device 100 of the portable electronic device of the present invention has a predetermined configuration of the two components described above, so that when one of the two components is rotated, the image projection device 100 can support the portable electronic device 9 whether it is in a straight form. In the situation of the display screen or the horizontal display screen, the corresponding straight projection image or the horizontal projection image projection can be made to the same wall surface, so that the user can view the projected image without changing the sitting posture or the standing posture. , thereby greatly improving the convenience of use. Moreover, through the design of the track contact of the first connecting portion 13 and the second connecting portion 21, the electrical connection between the two pieces can be maintained during the rotation, so that the signal transmission is continuously uninterrupted. Furthermore, the image projection device 100 of the portable electronic device of the present invention utilizes the positioning of the circular groove 131 and the annular rib 211 to allow the user to intuitively and quickly achieve the purpose of immediate projection.

Please refer to FIG. 6 , which is a schematic exploded view of a second embodiment of the image projection device of the portable electronic device. In the present embodiment, the components of the same component are configured or operated in the same or similar manner as the foregoing embodiments, and the same or similar aspects are not described herein.

The main difference between this embodiment and the foregoing embodiments is that the connection housing 10 only includes a surrounding shell portion 14 and a corresponding bottom panel, which is substantially like a protective case of a general portable electronic device, and the projection device 20 Internally, a power supply unit 24 is further provided, which is mainly configured to provide power required for the operation of the projection device 20, and the power supply unit 24 can also be electrically connected between the first connection portion 13 and the second connection portion 21. The electrical connection between the input and output terminals 12 and the output input slot 92 is used to transfer power to the portable electronic device 9.

In addition, a universal serial bus bar can be added to the projection device 20 so that power can be transmitted to the portable electronic device 9 by connecting the housing 10 or the transmission line. That is to say, the projection device 20 can also be used as a mobile power source alone, thereby increasing the utility of the image projection device 100 of the present portable electronic device.

Incidentally, in actual use, if the consideration of factors such as cost, the power supply unit may not be provided in the connection housing 10 and the projection device 20. At this time, the image projection device 100 of the portable electronic device of the present invention can be supplied to the projection device 20 by the power of the portable electronic device 9.

Among them, the annular electrical contact surface 132 is provided in the form of a full ring, and other aspects can be realized in practical use. The implementation of the first connecting portion and the second connecting portion will be further described below.

Please refer to FIG. 7 , which is a schematic diagram of a first connection portion and a second connection portion of the image projection device of the portable electronic device. As shown, the plurality of annular electrical contact faces 132 can be at least three, and each of the annular electrical contact faces 132 has a breakaway region 1321. At this time, the plurality of electrical contact bumps 212 correspond to at least three, and are arranged in a line shape from the center of the annular rib 211 in the outward direction. In the present embodiment, five are used as exemplary aspects, but this should not be taken as a limitation.

Please refer to FIG. 8 , which is another schematic diagram of the first connecting portion and the second connecting portion of the image projection device of the portable electronic device. As shown, the plurality of annular electrical contact faces 132 can be at least three, and each of the annular electrical contact faces 132 of the at least two annular electrical contact faces 132 can be symmetrically disposed about the center of the circular groove 131, and each pair of rings There are two break regions 1321 between the respective annular electrical contact faces 132 of the electrical contact faces 132. At this time, the plurality of electrical contact bumps 212 are correspondingly at least three, and the corresponding at least two electrical contact bumps 212 are symmetrically disposed at the center of the annular rib 211, which is formed by the annular rib 211 The center is arranged in a line in the outward direction. In the present embodiment, four pairs are used as exemplary aspects, but this should not be taken as a limitation.

By the predetermined configuration of the annular electrical contact surface 132 and the electrical contact bump 212 described above, it can be ensured that the electrical connection can be maintained continuously without interruption when the relative rotation is greater than or equal to 90 degrees. Incidentally, the number or the number of the annular electrical contact faces 132 and the electrical contact bumps 212 can be adjusted according to the actual number of pins required, so it should not be limited.

It should be noted that, in the above embodiment, although the annular electrical contact surface 132 is disposed on the connection housing 10, and the electrical contact bumps 212 are disposed on the projection device 20 as an exemplary embodiment, in actual operation, For the reverse adjustment, that is, the annular electrical contact surface 132 is disposed on the projection device 20, and the electrical contact bump 212 is disposed on the connection housing 10; therefore, it should be disposed only in the connection housing 10 with the annular electrical contact surface 132, The manner in which the electrical contact bumps 212 are disposed on the projection device 20 is a limitation.

Please refer to FIG. 9 and FIG. 10 , which are exploded views of the third embodiment of the image projection device of the portable electronic device, and a schematic structural view of the first connecting portion and the second connecting portion. In the present embodiment, the components of the same component are configured or operated in the same or similar manner as the foregoing embodiments, and the same or similar aspects are not described herein.

The main difference between the embodiment and the foregoing embodiment is that the outer shape of the projection device 20 and the first connecting portion 13 and the second connecting portion 21 are connected to enable the connecting housing 10 and the projection device 20 to rotate relative to each other. Removable connection module. The second connecting portion 21 includes a pivot 213. The pivot 213 is rotatably disposed on the projection device 20 by means of a bump or a flange and an annular groove. Preferably, the pivot 213 is disposed on the projection device 20 with a rotation angle limitation. For example, a limit block is disposed on the annular groove. The electrical contact bumps 212 are disposed in a plane of the pivot 213, and the projection device 20 is further electrically connected to the electrical contact bumps 212. For example, the electrical contact bumps 212 are electrically connected by the interior of the projection device 20. . In addition, the pivot 213 is rotatably inserted into the first connecting portion 13, such as the pivot 213 and the projection device 20, so that the connecting housing 10 and the projection device 20 can be relatively rotated. With the configuration of the above structure, the first connecting portion 13 and the second connecting portion 21 can be further brought into a rotatable and detachable combination.

It should be noted that, in this embodiment, the first connecting portion 13 and the second connecting portion 21 are detachable connecting modules that can be rotated relative to the connecting housing 10 and the projection device 20 after being connected. It is similar to the connectable and rotatable shaft structure of a camera or the like, and can also maintain the signal when the connection housing 10 is rotated to a vertical state or a horizontal state with respect to the projection device 20 after the connection. Continuous connection without interruption. Therefore, the above exemplary embodiments should not be limited. In the case of no conflict, the above configuration may be reversed, for example, the pivot 213 is rotatably disposed on the connection housing 10, and the annular electrical contact surface is disposed on the plane of the pivot 213, and then the projection device 20 Removably and rotatably coupled to the pivot 213. Therefore, it should not be limited to the above configuration.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or changes made to the spirit and scope of this creation shall be included in the scope of the appended patent application.

100‧‧‧Image projection device
10‧‧‧Connecting housing
11‧‧‧ accommodating space
12‧‧‧Output input埠
13‧‧‧First connection
131‧‧‧Circular groove
132‧‧‧Circular electrical contact surface
1321‧‧‧Disconnected area
14‧‧‧ Around the shell
15‧‧‧Components
16, 24‧‧‧Power unit
20‧‧‧Projector
21‧‧‧Second connection
211‧‧‧Ring ribs
212‧‧‧Electrical contact bumps
213‧‧‧ pivot
22‧‧‧Processing module
23‧‧‧Projection Module
25‧‧‧Inlay
26‧‧‧Support feet
9‧‧‧ portable electronic devices
91‧‧‧ display surface
92‧‧‧Output input slot
93‧‧‧Display screen signal
A‧‧‧ first position
B‧‧‧second position
D‧‧‧Predetermined direction
I‧‧‧Projected image

1 is a first exploded view of a first embodiment of an image projection apparatus of the present portable electronic device.

Figure 2 is a second exploded view of the first embodiment of the image projection device of the portable electronic device of the present invention.

Figure 3 is a block diagram showing a first embodiment of the image projection apparatus of the portable electronic device of the present invention.

Figure 4 is a first application diagram of a first embodiment of the image projection device of the portable electronic device of the present invention.

Figure 5 is a second application diagram of the first embodiment of the image projection device of the portable electronic device of the present invention.

Figure 6 is a schematic exploded view of a second embodiment of the image projection device of the portable electronic device of the present invention.

Figure 7 is a schematic view showing a first connection portion and a second connection portion of the image projection device of the portable electronic device of the present invention.

Figure 8 is a schematic view showing another aspect of the first connecting portion and the second connecting portion of the image projection device of the portable electronic device of the present invention.

Figure 9 is a schematic exploded view of a third embodiment of the image projection device of the portable electronic device of the present invention.

Figure 10 is a block diagram showing the structure of a third embodiment of the image projection apparatus of the portable electronic device.

Claims (10)

An image projection device for a portable electronic device is applied to a portable electronic device, comprising: a connecting housing, which is an elongated shell-like structure to have an accommodating space, and the accommodating space is configured to accommodate the portable An electronic device, and a display surface of the portable electronic device, wherein the receiving space has an output input port electrically connected to an output input slot of the portable electronic device to connect the portable device a display signal of the electronic device and the power transmission, the connection housing has a first connecting portion with respect to the outer surface of the display surface, and the first connecting portion is electrically connected to the output input port; and a projection The device has a second connecting portion on the outer surface of the projection device. The connecting device is detachably and rotatably disposed on the projection device, so that the first connecting portion is electrically connected to the second connecting portion. Therefore, the projection device is connected to the display screen signal and performs power transmission, and one of the processing devices controls the projection module of the projection device. The display screen signal projects a projection image in a predetermined direction; wherein the portable electronic device and the connection housing are rotated relative to the projection device while the first connection portion and the second connection portion are electrically connected When the first position is reached, the projection module projects the straight projection image in the predetermined direction, and when the portable electronic device and the connection housing are rotated to a second position relative to the projection device The projection module projects the horizontal projection image in the predetermined direction. The image projection device of the portable electronic device of claim 1, wherein the first connecting portion comprises a circular groove and a plurality of annular electrical contact faces disposed in a concentric manner, the plurality of annular electrical contacts The surface is disposed at the bottom of the circular groove, and the second connecting portion includes an annular rib and a plurality of elastic electrical contact bumps, and the annular rib is embedded in the circular groove The circular recesses, the plurality of electrical contact bumps corresponding to the plurality of annular electrical contact faces to respectively contact the annular electrical contact surface. The image projection device of the portable electronic device of claim 2, wherein the plurality of annular electrical contact faces are at least three, and each of the annular electrical contact faces has a disconnected region, the plurality of electrical The contact bumps correspond to at least three, and are arranged in a line shape from the center of the annular ribs outward. The image projection device of the portable electronic device of claim 2, wherein the plurality of annular electrical contact faces are at least three, and at least two of the annular electrical contact faces are centered on the circular groove Arranging symmetrically, and each of the annular electrical contact faces has two disconnected regions, the plurality of electrical contact bumps corresponding to at least three, and at least two of the electrical contact bumps are formed by the annular ribs The centers are symmetrically arranged, and are arranged in a line shape from the center of the annular ribs outward. The image projection device of the portable electronic device of claim 3, wherein the second connecting portion comprises a pivot, the pivoting shaft is rotatably disposed on the projection device, and the electrical contact is convex. The point is disposed on the pivot and the projection device is electrically connected to the electrical contact bump, and the pivot is rotatably embedded in the first connecting portion to enable the connecting housing to rotate relative to the projection device. The image projection device of the portable electronic device of claim 1, wherein the connection housing comprises a surrounding shell portion and a component receiving portion, the surrounding shell portion forming the receiving space to surround the portable electronic device The component receiving portion is disposed on one side of the surrounding shell portion and located on the back of the portable electronic device and partially shields the back surface of the portable electronic device. The image projection device of the portable electronic device of claim 6, wherein the connection housing further comprises a power supply unit disposed in the component receiving portion and electrically connected to the output input port and the a first connection portion for transmitting power to the portable electronic device and the projection device. The image projection device of the portable electronic device of claim 1, wherein the projection device further comprises a power supply unit configured to provide power required by the projection device, and the power supply unit is electrically connected to the a second connection to transmit power to the connection housing or the portable electronic device. The image projection device of the portable electronic device of claim 1, wherein the projection device is further provided with a support leg with respect to one side of the connection housing. The image projection device of the portable electronic device of claim 9, wherein the projection device has a recess corresponding to the shape of the support leg with respect to one of the connection housings, and the support leg can be received. Grounded in the slot.