Electronic device

Abstract

The invention provides an electronic device which is used for projecting an image in a projection area. The electronic device comprises a shell, a projection assembly and an imaging piece. The side edge of the shell is provided with an accommodating cavity. The containing cavity is provided with a light emitting window which is located on the horizontal axis. The projection assembly is arranged in the shell. The projection assembly comprises a control circuit board and a projection optical module. The control circuit board has a projection surface and forms an included angle with the horizontal axis. The projection optical module is connected to the projection surface and located in the accommodating cavity. When the projection optical module is braked, the projection light is projected to the light outlet window. The imaging piece is connected to the light outlet window and provided with a light-transmitting part, and the projection light penetrates through the light-transmitting part to form a projection area.

Description

Technical Field

[0001] The invention relates to an electronic device, and in particular to an electronic device capable of projecting images. Background Art

[0002] People usually exchange information by voice and text. With the popularization of technology products, people have become accustomed to using electronic devices (such as laptops, smart phones or tablet computers) to transmit information. However, electronic devices use applications as the transmission medium and can often only transmit information to specific people. If users want to transmit text messages to unspecified people around them through electronic devices, current electronic devices cannot meet the needs of users. Summary of the invention

[0003] In view of this, in some embodiments, an electronic device includes a housing, a projection assembly and an imaging component. The housing has a accommodating cavity on the side, the accommodating cavity has a light exit window, and the light exit window is located on the horizontal axis. The projection assembly is arranged in the housing, and the projection assembly includes a control circuit board and a projection optical module. The control circuit board has a projection surface, and the control circuit board has an angle with the horizontal axis. The projection optical module is connected to the projection surface and is located in the accommodating cavity. When the projection optical module is braked, the projection light is projected onto the light exit window. The imaging component is connected to the light exit window, and the imaging component has a light-transmitting portion, and the projection light penetrates the light-transmitting portion to form a projection area.

[0004] In some embodiments, the projection assembly includes a controller connected to a control circuit board, and the controller is used to generate a driving signal, and the projection optical module generates projection light according to the driving signal.

[0005] In some embodiments, the projection optical module has a first light emitting unit, a second light emitting unit and a third light emitting unit adjacent to each other, and the projection optical module controls the first light emitting unit, the second light emitting unit and the third light emitting unit according to a driving signal to change the color of the projection light.

[0006] In some embodiments, the first distance is from the midpoint of the projection optical module to the midpoint of the light exit window, the second distance is from the midpoint of the light exit window to the midpoint of the projection area, the second distance is greater than the first distance, and the ratio of the first distance to the second distance is 1:5.

[0007] In some embodiments, the projection assembly has an illumination optical module. The illumination optical module is connected to the illumination surface of the control circuit board. When the illumination optical module is braked, an illumination light source is generated. The side has an illumination part, which is located on one side of the light exit window, and the illumination light source irradiates the illumination part.

[0008] In some embodiments, the projection assembly includes a controller. The controller is connected to a control circuit board and is used to generate an electrical signal. The imaging element is an electronic paper, and the electronic paper generates a light-transmitting portion according to the electrical signal.

[0009] In some embodiments, the imaging member has a connecting member, and the imaging member is detachably fixed to the light exit window by the connecting member.

[0010] In some embodiments, the connecting piece is a buckle, which is buckled into the light exit window.

[0011] In some embodiments, the connecting member is a magnetic element, the light exit window has a magnetic portion, and the magnetic element is adsorbed on the magnetic portion.

[0012] In some embodiments, the electronic device further comprises a carrying frame, the carrying frame having a carrying portion and a connecting portion. The imaging element is disposed in the carrying frame, the light-transmitting portion faces the carrying portion, and the connecting portion is connected to the light exit window.

[0013] In some embodiments, the electronic device further comprises a brake assembly connected to the housing and located in the accommodating cavity. When the brake assembly is braked, the angle between the control circuit board and the horizontal axis is adjusted.

[0014] In some embodiments, the angle between the control circuit board and the horizontal axis is substantially equal to 25°.

[0015] In summary, according to some embodiments, the electronic device includes a housing, a projection assembly and an imaging element. The projection assembly is used to generate projection light, and after the projection light passes through the imaging element, an image (font image) can be displayed on the projection area. The control circuit board has an angle with the horizontal axis, and at this angle, the image projected by the projection assembly is readable, so that people around the electronic device can recognize the text of the image with the naked eye. In this way, the electronic device can convey the text information expressed by the image to other people.

[0016] In order to further understand the technologies, means and effects adopted by the present application to achieve the intended purpose, please refer to the following detailed description and drawings of the present application. It is believed that the purpose, characteristics and features of the present application can be deeply and specifically understood thereby. However, the drawings are only provided for reference and illustration and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an electronic device in some embodiments of the present invention;

[0018] Figure 2 A partial cross-sectional view of an electronic device along the AA direction in some embodiments of the present invention;

[0019] Figure 3 A partial cross-sectional view of an electronic device in the AA direction in some embodiments of the present invention, showing the illumination path of the projection light;

[0020] Figure 4 for Figure 1 A partial cross-sectional view of the middle area 4, showing the projection surface of the control circuit board;

[0021] Figure 5 for Figure 1 A partial cross-sectional view of the middle area 4 showing the lighting surface of the control circuit board;

[0022] Figure 6 In some embodiments of the present invention, a partial three-dimensional view of an electronic device shows the lighting parts on both sides of the light window;

[0023] Figure 7 In some embodiments of the present invention, a partial cross-sectional view of an electronic device in the AA direction shows that the connecting member is a buckle;

[0024] Figure 8 In some embodiments of the present invention, a partial cross-sectional view of an electronic device in the AA direction shows that the connecting member is a magnetic element;

[0025] Fig. 9 A partial cross-sectional view of an electronic device in the AA direction in some embodiments of the present invention, showing that the imaging element is placed in the carrier frame and fixed to the light exit window;

[0026] Fig.10 In some embodiments of the present invention, a partial cross-sectional view of an electronic device in the AA direction shows that the control circuit board changes the angle through the brake assembly;

[0027] Wherein, the reference numerals are:

[0028] 4: Region

[0029] 10: Electronic devices

[0030] 101: Side

[0031] 102: Shell

[0032] 103: light-shielding part

[0033] 104: Projection Component

[0034] 106: Imaging

[0035] 108: Accommodation cavity

[0036] 110: Light exit window

[0037] 112: Control circuit board

[0038] 114: Projection optical module

[0039] 116: Projection surface

[0040] 118: light-transmitting part

[0041] 120: Controller

[0042] 122: first light emitting unit

[0043] 124: Second light emitting unit

[0044] 126: third light emitting unit

[0045] 128: Lighting optical module

[0046] 130:Lighting surface

[0047] 132:Lighting Department

[0048] 134: Connector

[0049] 136: snap-fit ​​hole

[0050] 138: Magnetic suction part

[0051] 140: Carrying frame

[0052] 142: Bearing part

[0053] 144: Connecting part

[0054] 146: Brake assembly

[0055] 148: Pivot

[0056] 150: Adjusting screw

[0057] 151: Keyhole

[0058] 152: Head

[0059] 154: Reach the top

[0060] 20: Object surface

[0061] 202: Projection Area

[0062] 204: Image

[0063] A1: Angle

[0064] C1, C2, C3: midpoint

[0065] L1: horizontal axis

[0066] L2: Projection light

[0067] L3: Irradiation Path

[0068] L4: First distance

[0069] L5: Second distance

[0070] L6: Light source

[0071] AA: Line segment. DETAILED DESCRIPTION

[0072] The technical content and detailed description of this application are described below with reference to the accompanying drawings:

[0073] Various embodiments are provided below for detailed description. However, the embodiments are only used as examples and do not limit the scope of the invention. In addition, some elements are omitted in the drawings in the embodiments to clearly show the technical features of the invention. The same reference numerals will be used to represent the same or similar elements in all drawings.

[0074] See also Figure 1 , Figure 2 and Figure 3 . Figure 1 FIG. 4 is a three-dimensional diagram of an electronic device in some embodiments of the present invention. Figure 2 This is a partial cross-sectional view of an electronic device along the AA direction in some embodiments of the present invention.

[0075] Figure 3 In some embodiments of the present invention, a partial cross-sectional view of an electronic device in the AA direction is shown, showing the illumination path of the projection light. Figure 1 , Figure 2 and Figure 3 As shown, the electronic device 10 includes a housing 102, a projection assembly 104 and an imaging element 106. The housing 102 has a receiving cavity 108 on the side 101, and the receiving cavity 108 has a light exit window 110. The light exit window 110 is located on a horizontal axis L1. The projection assembly 104 is disposed in the housing 102, and the projection assembly 104 includes a control circuit board 112 and a projection optical module 114. The control circuit board 112 has a projection surface 116. The control circuit board 112 has an angle A1 with the horizontal axis L1. The projection optical module 114 is connected to the projection surface 116 and is located in the receiving cavity 108. When the projection optical module 114 is braked, a projection light L2 is projected onto the light exit window 110. The imaging element 106 is connected to the light exit window 110. The imaging element 106 has a light-transmitting portion 118 . The projection light L2 penetrates the light-transmitting portion 118 and irradiates an object surface 20 to form a projection area 202 .

[0076] The electronic device 10 may be, for example, a notebook computer. The housing 102 may be a shell of the notebook computer. Figure 1 In the embodiment, the housing 102 may also refer to a screen back cover of a notebook computer (referred to as Part A in the industry). The aforementioned "the housing 102 has a receiving cavity 108 on the side 101" may refer to the side where the screen back cover and a keyboard base (referred to as Part D in the industry) are pivotally connected to each other. The receiving cavity 108 may refer to a chamber formed inside the screen back cover. Figure 1As shown in , when the screen back cover and the keyboard base of the electronic device 10 are folded together, the projection light L2 will penetrate the light-transmitting portion 118 and illuminate the projection area 202 of the object surface 20, so as to form the projection area 202 on the object surface 20 and project an image 204. In some embodiments, the side 101 may also refer to an opposite side (facing the user side) where the screen back cover and the keyboard base are pivotally connected to each other. The image may refer to an image composed of at least one font, such as a word trademark or a word.

[0077] The imaging element 106 may refer to a hollow sheet. The light-transmitting portion 118 of the imaging element 106 may refer to a hollow portion, and the rest except the hollow portion is an opaque portion. The imaging element 106 may be made of a hard material (such as a metal sheet) or a soft material (such as a plastic sheet). In some embodiments, the imaging element 106 may be directly or indirectly fixed to the light exit window 110 (described later), so that when the projection light L2 is irradiated on the imaging element 106, the projection light L2 irradiated on the light-transmitting portion 118 may penetrate through the accommodating cavity 108 to the outside of the housing 102. On the contrary, the projection light L2 irradiated on the opaque portion will be shielded. In some embodiments, the imaging element 106 may also generate the light-transmitting portion 118 and the opaque portion using an electrical signal, wherein the imaging element 106 may be, for example, an electronic paper. The imaging element 106 (electronic paper) forms the light-transmitting portion 118 and the opaque portion through the received electrical signal.

[0078] The aforementioned “light exit window 110 is located on the horizontal axis L1” may mean that the light exit window 110 is parallel to the horizontal axis L1 or intersects the horizontal axis L1. The horizontal axis L1 may be an axis parallel to the projection area 202 and extends along the X-axis direction in the figure.

[0079] The control circuit board 112 can be directly or indirectly connected to the accommodating cavity 108 so that the projection optical module 114 can face the light exit window 110. Specifically, the control circuit board 112 is fixed in the accommodating cavity 108 at a projection angle. So that the projection light L2 generated by the projection optical module 114 can pass through the light exit window 110. In some embodiments, the projection angle can refer to the angle A1 between the control circuit board 112 and the horizontal axis L1, and the angle A1 is substantially equal to 25°. Among them, when the angle A1 is larger, the area of ​​the image 204 projected by the projection optical module 114 on the projection area 202 will be larger, but the image 204 will reduce its readability as the font area increases. Conversely, when the control circuit board 112 is parallel to the horizontal axis L1 (for example, the projection optical module 114 and the light exit window 110 are located on the same plumb line), the image 204 projected by the projection optical module 114 on the projection area 202 can improve readability (the area of ​​the image 204 is the smallest at this moment). It should be noted that the projection light L2 finally projects an image 204 on the projection area 202. Therefore, the image 204 must take into account the visual recognition of the naked eye. When the angle A1 is substantially equal to 25° (considering the tolerance of the control circuit board 112 connecting the accommodating cavity 108, the angle A1 can allow an error of ±2°), the image 204 projected on the projection area 202 has the best readability.

[0080] When the projection optical module 114 is braked, it can generate the projection light L2, wherein the projection light L2 is a visible light. The projection optical module 114 can change a light color or a light frequency of the projection light L2 (to be described later).

[0081] For example Figure 2 and Figure 3 As shown, in some embodiments, when the angle A1 is substantially equal to 25°, the projection light L2 is projected to the projection area 202 along an illumination path L3. Therein, a first distance L4 is defined between a midpoint C1 of the projection optical module 114 and a midpoint C2 of the light exit window 110. A second distance L5 is defined between a midpoint C2 of the light exit window 110 and a midpoint C3 of the projection area 202, and the second distance L5 is greater than the first distance L4. In some embodiments, the ratio of the first distance L4 to the second distance L5 is 1:5, and the electronic device 10 can set the ratio of the first distance L4 to the second distance L5 to be 1:5. At this moment, the angle A1 between the control circuit board 112 and the horizontal axis L1 is substantially equal to 25°. This allows the image 204 projected on the projection area 202 by the projection optical module 114 to obtain the best readability. In addition, even if the electronic device 10 is far away from the projection area 202, the image 204 can still maintain the best readability although the image 204 will be enlarged with the font area. It should be noted that the ratio of 1:5 can allow an error of 1%, and this error comes from the assembly tolerance of the housing 102 .

[0082] For example Figure 3 As shown, in some embodiments, the shell 102 avoids the irradiation path L3. Specifically, after the projection optical module 114 emits the projection light L2, after the projection light L2 passes through the light exit window 110, the projection light L2 can be projected onto the projection area 202 without being blocked by the shell 102, so as to maintain the integrity of the image 204 on the projection area 202. In some embodiments, the shell 102 may be provided with a light shielding portion 103, and the light shielding portion 103 may avoid the irradiation path L3. Among them, the light shielding portion 103 may be collapsed in the direction of the accommodating cavity 108 to avoid the irradiation path L3. In some embodiments, the light exit window 110 may also be away from the accommodating cavity 108, so that the irradiation path L3 can be away from an outer wall surface of the shell 102 (for example Figure 3 The light shielding portion 103 shown in FIG.

[0083] See also Figure 4 and Figure 5 . Figure 4 for Figure 1 A partial cross-sectional view of the middle area 4 shows the projection surface of the control circuit board. Figure 5 for Figure 1 A partial cross-sectional view of area 4 in the middle shows the lighting surface of the control circuit board. Figure 4 and Figure 5 As shown, in some embodiments, the projection assembly 104 includes a controller 120 (see Figure 5 ). The controller 120 is connected to the control circuit board 112. The controller 120 is used to generate a driving signal. The projection optical module 114 generates the projection light L2 according to the driving signal. The controller 120 can be, for example, a microcontroller unit (MCU) or a graphics processing unit (GPU). In some embodiments, the electronic device 10 can control the controller 120 so that the controller 120 generates a driving signal of a specified light color (to be described in detail later).

[0084] In some embodiments, when the imaging element 106 is implemented as electronic paper, the controller 120 can be used to generate an electrical signal. The electronic paper generates the light-transmitting portion 118 according to the electrical signal. Specifically, the electrical signal can generate an electric field to control an electronic ink of the electronic paper. The multiple charged pigment particles in the electronic ink can be rearranged according to the electric field to form the light-transmitting portion 118 and the opaque portion.

[0085] For example Figure 4As shown, in some embodiments, the projection optical module 114 has a first light-emitting unit 122, a second light-emitting unit 124, and a third light-emitting unit 126 that are adjacent to each other. The projection optical module 114 controls the first light-emitting unit 122, the second light-emitting unit 124, and the third light-emitting unit 126 according to the driving signal to change the light color of the projection light L2. In some embodiments, the first light-emitting unit 122, the second light-emitting unit 124, and the third light-emitting unit 126 can be arranged on the same axis, or can be arranged alternately with each other. When the projection optical module 114 receives the driving signal, the projection optical module 114 can control a driving voltage of the first light-emitting unit 122, the second light-emitting unit 124, and the third light-emitting unit 126, so that each light-emitting unit (122, 124, 126) can generate a visible light of different wavelengths. Under the light mixing effect of each light-emitting unit (122, 124, 126), the projection light L2 of the specified light color is generated. In some embodiments, the first light emitting unit 122, the second light emitting unit 124 and the third light emitting unit 126 can be a blue light emitting diode, a red light emitting diode and a green light emitting diode respectively. They can also be composed of light emitting diodes of at least two different colors. In some embodiments, the projection optical module 114 can control the light emitting frequency of each light emitting unit (122, 124, 126) according to the driving signal, so that each light emitting unit (122, 124, 126) can emit the projection light L2 at the specified light emitting frequency.

[0086] See also Figure 5 and Figure 6 . Figure 6 In some embodiments of the present invention, a partial stereoscopic view of an electronic device is shown, showing the lighting parts on both sides of the light window. Figure 5 and Figure 6 As shown, in some embodiments, the projection assembly 104 has an illumination optical module 128. The illumination optical module 128 is connected to an illumination surface 130 of the control circuit board 112 (the illumination surface 130 is the opposite surface of the projection surface 116). When the illumination optical module 128 is actuated, the illumination optical module 128 can generate an illumination light source L6. Figure 6 As shown, the side edge 101 (seen in Figure 1 ) has an illumination portion 132, and the illumination portion 132 is located at one side of the light exit window 110. When the illumination optical module 128 generates an illumination light source L6, the illumination light source L6 irradiates the illumination portion 132 and irradiates out of the housing 102 from the illumination portion 132.

[0087] See also Figure 7 , Figure 7In some embodiments of the present invention, a partial cross-sectional view of the electronic device in the AA direction shows that the connecting member is a buckle. In some embodiments, the imaging member 106 has a connecting member 134, and the imaging member 106 is detachably fixed to the light exit window 110 by the connecting member 134. Thereby, the imaging member 106 can be removed from the light exit window 110 and installed in the light exit window 110 by the connecting member 134. If the content of the image 204 projected on the projection area 202 is to be changed, the original imaging member 106 can be removed from the light exit window 110 first, and then the imaging member 106 to be replaced can be installed and fixed in the light exit window 110. After the projection light L2 passes through the new imaging member 106, the new image 204 content can be projected on the projection area 202. For example Figure 7 As shown, in some embodiments, the connecting member 134 is two buckles, and the light exit window 110 has two buckle holes 136. The imaging member 106 can buckle the two buckles to the two buckle holes 136 of the light exit window 110 respectively, so that the imaging member 106 can be fixed to the light exit window 110.

[0088] See also Figure 8 , Figure 8 In some embodiments of the present invention, a partial cross-sectional view of the electronic device in the AA direction shows that the connecting member is a magnetic element. In some embodiments, the connecting member 134 is at least one magnetic element, and the light exit window 110 has at least one magnetic portion 138. The magnetic element is adsorbed on the magnetic portion 138 of the light exit window 110 to fix the imaging element 106 to the light exit window 110.

[0089] See also Fig. 9 , Fig. 9 In some embodiments of the present invention, a partial cross-sectional view of the electronic device in the AA direction shows that the imaging component is placed in the carrier frame and fixed to the light exit window. In some embodiments, the electronic device 10 further includes a carrier frame 140. The carrier frame 140 has a carrier portion 142 and a connecting portion 144. The imaging component 106 is placed on the carrier portion 142, the light-transmitting portion 118 faces the carrier portion 142, and the connecting portion 144 is connected to the light exit window 110. Among them, the connecting portion 144 can be one of a buckle, a magnetic element or a locking component, or a combination of more than two of the foregoing. When the imaging component 106 is to be replaced, a new imaging component 106 can be placed on the carrier portion 142 of the carrier frame 140, and the carrier frame 140 can be fixed to the light exit window 110. In this way, if the carrier frame 140 is worn during multiple disassembly and installation processes, the carrier frame 140 can be directly replaced.

[0090] Fig.10 In some embodiments of the present invention, a partial cross-sectional view of an electronic device in the AA direction shows that the control circuit board changes the angle through the brake assembly. Fig.10As shown, in some embodiments, the electronic device 10 further includes a brake assembly 146. The brake assembly 146 is connected to the housing 102 and is located in the accommodating cavity 108. When the brake assembly 146 is braked, it is used to adjust the angle A1 between the control circuit board 112 and the horizontal axis L1. The brake assembly 146 can be, for example, a servo motor, an adjustment screw, a gear set or a connecting rod. Fig.10 The brake assembly 146 is taken as an example of an adjustment screw. The brake assembly 146 includes a pivot 148 and an adjustment screw 150. The pivot 148 is fixed to the housing 102 and located in the accommodating cavity 108, and one end of the control circuit board 112 is pivoted on the pivot 148. The adjustment screw 150 is connected to the housing 102. The adjustment screw 150 has a head 152 and a top 154, the head 152 is exposed from the housing 102, the top 154 ​​presses the other end of the control circuit board 112, and the pivot 148 normally presses one end of the control circuit board 112 against the top 154. The adjustment screw 150 is rotated to change the angle A1 between the control circuit board 112 and the horizontal axis L1. In some embodiments, the housing 102 has a locking hole 151, and the adjustment screw 150 is locked in the locking hole 151 so that the head 152 is exposed from the housing 102. To increase the included angle A1 between the control circuit board 112 and the light exit window 110, the adjustment screw 150 can be further locked into the lock hole 151. Fig.10 The end of the control circuit board 112 is pushed in the negative direction of the Y axis to increase the angle A1. To reduce the angle A1 between the control circuit board 112 and the light exit window 110, the adjustment screw 150 can be further withdrawn from the lock hole 151. At this time, the top 154 ​​will be turned toward Fig.10 The positive direction of the middle Y axis moves away from the control circuit board 112 (the control circuit board 112 can maintain contact with the top portion 154 under the action of the pivot 148) to reduce the angle of the angle A1. In this way, the electronic device 10 can adjust the angle of the angle A1 through the adjustment screw 150 to improve the visual differences or habits of different users viewing the image 204 with their naked eyes. In some embodiments, the brake component 146 can also be a servo motor, which is connected to the housing 102 and located in the accommodating cavity 108. The servo motor can carry the control circuit board 112 through a linkage plate. When the servo motor is braked, it can link the linkage plate to change the position of the control circuit board 112, thereby adjusting the angle A1.

[0091] In summary, an electronic device 10 includes a housing 102, a projection assembly 104, and an imaging element 106. The projection assembly 104 is used to generate projection light L2, and after the projection light L2 passes through the imaging element 106, an image 204 can be displayed on a projection area 202. The control circuit board 112 and the horizontal axis L1 have an angle A1, and the image 204 projected by the projection assembly 104 is readable at the angle A1, so that people around the electronic device 10 can recognize the image 204 with naked eyes. In this way, the electronic device 10 can convey the information expressed by the image 204 to other people.

[0092] The above is only a preferred embodiment of the present application, and should not limit the scope of implementation of the present application. That is, all equivalent changes and modifications made according to the present application should still fall within the scope of the patent coverage of the present application. The present application may also have other embodiments. Without departing from the spirit and essence of the present application, technicians familiar with the field can make various corresponding changes and deformations according to the present application, but these corresponding changes and deformations should fall within the scope of protection of the claims attached to the present application.

Claims

1. An electronic device for projecting an image in a projection area, characterized in that: include: A housing having a housing cavity on one side, wherein the housing cavity has a light exit window, and the light exit window is located on a horizontal axis; A projection assembly, disposed in the housing, comprising: a control circuit board having a projection surface, wherein the control circuit board and the horizontal axis form an angle; and a projection optical module connected to the projection surface and located in the accommodating cavity, wherein when the projection optical module is braked, a projection light is projected onto the light exit window; and An imaging element is connected to the light exit window, wherein the imaging element has a light-transmitting portion, and the projection light penetrates the light-transmitting portion to form the projection area.

2. The electronic device according to claim 1, wherein: A first distance is from the midpoint of the projection optical module to the midpoint of the light exit window, and a second distance is from the midpoint of the light exit window to the midpoint of the projection area. The second distance is greater than the first distance, and the ratio of the first distance to the second distance is 1:

5.

3. The electronic device according to claim 1, wherein: The projection assembly includes a controller connected to the control circuit board. The controller is used to generate a driving signal. The projection optical module generates a projection light source according to the driving signal.

4. The electronic device as claimed in claim 3, characterized in that: The projection optical module has a first light-emitting unit, a second light-emitting unit and a third light-emitting unit adjacent to each other. The projection optical module controls the first light-emitting unit, the second light-emitting unit and the third light-emitting unit according to the driving signal to change the light color of the projection light source.

5. The electronic device according to claim 1, wherein: The projection assembly has an illumination optical module connected to an illumination surface of the control circuit board. When the illumination optical module is braked, an illumination light source is generated. The side has an illumination part, which is located on one side of the light exit window. The illumination light source irradiates the illumination part.

6. The electronic device as claimed in claim 1, wherein: The projection assembly includes a controller connected to the control circuit board for generating an electrical signal; the imaging element is an electronic paper, and the electronic paper generates the light-transmitting portion according to the electrical signal.

7. The electronic device according to claim 1, wherein: The imaging component has a connecting component, and the imaging component is detachably fixed to the light exit window by the connecting component.

8. The electronic device as claimed in claim 7, characterized in that: The connecting piece is a buckle, and the buckle is buckled on the light exit window.

9. The electronic device as claimed in claim 7, characterized in that: The connecting piece is a magnetic element, the light exit window has a magnetic portion, and the magnetic element is adsorbed on the magnetic portion.

10. The electronic device according to claim 1, wherein: It further comprises a carrying frame, wherein the carrying frame has a carrying portion and a connecting portion, the imaging element is placed on the carrying frame, the light-transmitting portion faces the carrying portion, and the connecting portion is connected to the light exit window.

11. The electronic device according to claim 1, wherein: It further comprises a brake assembly connected to the housing and located in the accommodating cavity. When the brake assembly is braked, the angle between the control circuit board and the horizontal axis is adjusted.

12. The electronic device according to any one of claims 1 to 11, characterized in that: The included angle between the control circuit board and the horizontal axis is substantially equal to 25°.

Images