CN112051704B

CN112051704B - Electronic device

Info

Publication number: CN112051704B
Application number: CN201910489799.8A
Authority: CN
Inventors: 李锡璜
Original assignee: Coretronic Corp
Current assignee: Coretronic Corp
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2022-01-18
Anticipated expiration: 2039-06-06
Also published as: TWI702462B; TW202046004A; CN112051704A

Abstract

An electronic device includes a mounting frame and an electronic apparatus. The mounting frame is used for being fixed in a stationary plane and has two first positioning flutings, and two first positioning flutings correspond in a horizontal direction. The electronic device comprises a device shell and a mounting piece, wherein the device shell is provided with a rear side surface. The mounting piece is used for connecting in the trailing flank and the mounting piece has two first alignment posts. The two first positioning columns respectively enter the two first positioning grooves to position the mounting piece on the mounting frame, and the rear side faces the fixing face. The extending direction of the two first positioning slots is not perpendicular to the rear side surface of the device shell. The electronic equipment provided by the invention can be installed on a fixed surface beautifully and conveniently.

Description

Electronic device

Technical Field

The present invention relates to an electronic device, and more particularly, to an electronic device mountable on a fixing surface.

Background

A projector is a display device for generating large-sized pictures. The imaging principle of the projector is to convert the illumination beam generated by the light source into an image beam by means of the light valve, and then project the image beam onto a screen or a wall surface by means of the lens.

In general, a suspension type projector is fixed or supported on a cantilever extending from a wall surface, and projects a projection screen mounted on the wall surface. In this installation, the cantilever and its fixing or supporting means are visually too obtrusive to be aesthetically pleasing. On the other hand, the projector is usually mounted on the corresponding fixing or supporting mechanism in a locking manner, and it is inconvenient to mount and dismount the projector by using a tool. In addition, the projector and the projection screen are generally installed on a wall surface, so that the relative positions of the projector and the projection screen are prone to errors caused by human factors, and the quality of the projection is poor.

The background section is only used to help the understanding of the present invention, and therefore the disclosure in the background section may include some known techniques which are not known to those skilled in the art. The statements in the "background" section do not represent that matter or the problems which may be solved by one or more embodiments of the present invention, but are known or appreciated by those skilled in the art before filing the present application.

Disclosure of Invention

The invention provides an electronic device which can be installed on a fixed surface beautifully and conveniently.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.

To achieve one or a part of or all of the above or other objects, an embodiment of the invention provides an electronic apparatus including a mounting frame and an electronic device. The mounting frame is used for being fixed in a stationary plane and has two first positioning flutings, and two first positioning flutings correspond in a horizontal direction. The electronic device comprises a device shell and a mounting piece, wherein the device shell is provided with a rear side surface. The mounting piece is used for connecting in the trailing flank and the mounting piece has two first alignment posts. The two first positioning columns are used for respectively entering the two first positioning grooves to position the mounting piece on the mounting frame and enable the rear side face to face the fixing face. The extending direction of the two first positioning slots is not perpendicular to the rear side surface of the device shell.

Based on the above, the embodiments of the invention have at least one of the following advantages or efficacies. In the electronic equipment of the invention, the mounting part of the electronic device is arranged on the rear side surface of the device shell, so that when the electronic device is mounted on the mounting rack on a fixed surface (such as a wall surface) by the mounting part, the mounting part and the mounting rack are positioned between the rear side surface of the device shell and the fixed surface and are not excessively obtrusive in vision, thereby leading the electronic equipment to be more beautiful. In addition, when the electronic device is installed, the electronic device can be positioned on the fixing surface only by moving the positioning column of the installation part of the electronic device into the positioning groove of the installation frame on the fixing surface, so that the electronic device is convenient to install.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a perspective view of a projection system according to an embodiment of the invention.

Fig. 2 is a front view of the projection system of fig. 1.

Fig. 3 is a side view of the projection system of fig. 1.

Fig. 4 is an exploded view of the projection system of fig. 1.

FIG. 5 is an exploded view of the projection system of FIG. 4 from another viewing angle.

Fig. 6 is a partial perspective view of the projection system of fig. 1.

Fig. 7 is a partially exploded view of the projection system of fig. 1.

FIG. 8 is an exploded view of the projection system of FIG. 7 from another viewing angle.

FIG. 9 illustrates the mounting bracket and mounting member combination of FIG. 6.

Fig. 10 is a partial enlarged view of the mounting bracket of fig. 8.

Fig. 11 is a perspective view of the positioning member, the elastic member and the nut of fig. 10.

Fig. 12 is a perspective view of the spacer of fig. 11.

Fig. 13 is a partial perspective view of the electronic device of fig. 1.

Fig. 14 is a partial cross-sectional view of the electronic device of fig. 1.

Fig. 15 is a side view of a portion of the components of the electronic device of fig. 1.

Fig. 16 is an exploded view of the electronic device of fig. 15.

Fig. 17A and 17B illustrate the rotation of the rod of fig. 4 relative to the mounting bracket.

Fig. 18 is an enlarged partial view of the mounting assembly of fig. 17B.

FIG. 19 is a partial enlarged view of the mounting assembly of FIG. 17B from another perspective.

Detailed Description

The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 is a perspective view of a projection system according to an embodiment of the invention. Fig. 2 is a front view of the projection system of fig. 1. Fig. 3 is a side view of the projection system of fig. 1. Referring to fig. 1 to fig. 3, a projection system 1 of the present embodiment includes an electronic device 10 and a projection screen 20, where the electronic device 10 includes an electronic apparatus 100 and a mounting assembly 200. The electronic device 100 is, for example, an ultra-short-focus projector, and is configured to project an image 60 onto the projection screen 20 in a direction of a fixed surface 50 (e.g., a wall surface, shown in fig. 3).

Fig. 4 is an exploded view of the projection system of fig. 1. FIG. 5 is an exploded view of the projection system of FIG. 4 from another viewing angle. Referring to fig. 4 and 5, the electronic device 100 includes a device housing 110 and a mounting member 120, and the mounting assembly 200 includes a mounting frame 210 and two rods 220. The mounting bracket 210 includes a first mounting portion 210a and a second mounting portion 210b, the first mounting portion 210a and the second mounting portion 210b are integrally connected, the first mounting portion 210a is used for being fixed to the fixing surface 50 (such as a wall surface), and the two rods are connected to the second mounting portion 210b and respectively extend toward two opposite sides of the second mounting portion 210 b.

The electronic device 100 is configured to be mounted on the first mounting portion 210a, and the projection screen 20 is configured to be mounted on the rod 220 connected to the second mounting portion 210 b. Since the first mounting portion 210a and the second mounting portion 210b are integrally connected as described above, the relative positions of the first mounting portion 210a and the second mounting portion 210b are fixed. Therefore, when the electronic device 100 is mounted on the first mounting portion 210a and the projection screen 20 is mounted on the rod 220 of the second mounting portion 210b, the relative position between the electronic device 100 and the projection screen 20 can be ensured to meet the expectation, so that the projection system 1 has good projection quality.

Fig. 6 is a partial perspective view of the projection system of fig. 1. Fig. 7 is a partially exploded view of the projection system of fig. 1. FIG. 8 is an exploded view of the projection system of FIG. 7 from another viewing angle. Referring to fig. 6 to 8, the mounting member 120 and the rear side surface 110a of the device housing 110 have a plurality of holes (not numbered) corresponding to each other, and the mounting member 120 is screwed to the rear side surface 110a of the device housing 110 by a plurality of screw members 1202 passing through the holes. The mounting member 120 is coupled to and positioned at the mounting bracket 210 such that the rear side 110a of the device housing 110 faces the fixing surface 50. In the manner of mounting the electronic device 100 on the fixing surface 50 as described above, the mounting member 120 and the mounting bracket 210 are located between the rear side 110a of the device housing 110 and the fixing surface 50 without being visually too obtrusive, so that the electronic apparatus 10 is more attractive.

In more detail, the mounting bracket 210 has two first positioning slots S1, the extending direction D1 (labeled in fig. 6) of the two first positioning slots S1 is not perpendicular to (illustrated as parallel to) the rear side 110a (labeled in fig. 7) of the device housing 110, and the two first positioning slots S1 correspond to a horizontal direction H (labeled in fig. 6). That is, the extending directions D1 of the two first positioning slots S1 are the same and correspond to each other as viewed in the horizontal direction H. The mounting bracket 210 further has two second positioning slots S2, the extending direction D2 of the two second positioning slots S2 is perpendicular to the rear side 110a of the device housing 110, and the two second positioning slots S2 correspond to the horizontal direction H. That is, the extending directions D2 of the two second positioning slits S2 are the same and correspond to each other as viewed in the horizontal direction H. Accordingly, the mounting member 120 of the electronic device 100 has two first positioning posts P1 and two second positioning posts P2, the two first positioning posts P1 enter the two first positioning slots S1 and the two second positioning posts P2 enter the two second positioning slots S2, respectively, so as to position the mounting member 120 on the mounting frame 210.

By the arrangement of the first positioning slot S1, the second positioning slot S2, the first positioning post P1 and the second positioning post P2, when the electronic device 100 is mounted, the electronic device 100 can be positioned on the fixing surface 50 by moving the first positioning post P1 and the second positioning post P2 of the mounting member 120 of the electronic device 100 into the first positioning slot S1 and the second positioning slot S2 of the mounting frame 210 fixed on the fixing surface 50, respectively, i.e., by positioning the mounting member 120 on the mounting frame 210, so that the mounting is more convenient. Since the first positioning slot S1 and the second positioning slot S2 have different extending directions as described above, the first positioning slot S1 and the second positioning slot S2 can limit the movement of the electronic device 100 and the mounting member 120 thereof in different directions, respectively, so that the electronic device 100 and the mounting member 120 thereof are not easily separated from the mounting frame 210 by unexpected external force. In addition, since the first positioning slot S1 does not extend perpendicular to the rear side 110a of the device housing 110, rather than being a horizontal positioning slot, the first positioning post P1 of the mounting member 120 is prevented from undesirably sliding out of the first positioning slot S1 of the mounting bracket 210 in the horizontal direction.

FIG. 9 illustrates the mounting bracket and mounting member combination of FIG. 6. Referring to fig. 6 and 9, in the process of mounting the electronic device 100, the user can tilt the device housing 110 and the mounting member 120 as shown in fig. 9, so as to align the first positioning pillar P1 of the mounting member 120 and move the first positioning pillar P1 into the first positioning slot S1 along the extending direction D1 of the first positioning slot S1 of the mounting member 210, and then rotate the device housing 110 and the mounting member 120 so as to align the second positioning pillar P2 of the mounting member 120 as shown in fig. 6 and move the second positioning pillar P2 into the second positioning slot S2 along the extending direction D2 of the second positioning slot S2 of the mounting member 210. On the contrary, in the process of disassembling the electronic device 100, the user can rotate the device housing 110 and the mounting member 120 from the state shown in fig. 6 to the state shown in fig. 9, firstly slide the second positioning post P2 of the mounting member 120 out of the second positioning slot S2 of the mounting frame 210, and then lift the device housing 110 and the mounting member 120 upward to slide the first positioning post P1 of the mounting member 120 out of the first positioning slot S1 of the mounting frame 210.

As shown in fig. 6 to 9, the mounting bracket 210 of the present embodiment is a metal plate, the mounting bracket 210 includes two first side plates 2101 protruding away from the fixing surface 50 (shown in fig. 3), two first positioning slots S1 are respectively located on the two first side plates 2101 of the mounting bracket 210 and correspond to the horizontal direction H (shown in fig. 6), and two second positioning slots S2 are respectively located on the two first side plates 2101 of the mounting bracket 210 and correspond to the horizontal direction H (shown in fig. 6). The two first side plates 2101 are, for example, folded walls formed by folding a metal plate (the mounting bracket 210). Similarly, the mounting member 120 of the present embodiment is a metal plate, the mounting member 120 includes two second side plates 1201 protruding away from the rear side 110a of the electronic device 100, two first positioning pillars P1 are respectively located on the two second side plates 1201 and correspond to the horizontal direction H (labeled in fig. 6), and two second positioning pillars P2 are respectively located on the two second side plates 1201 and correspond to the horizontal direction H (labeled in fig. 6). The two second side plates 1201 are, for example, folded walls formed by folding a metal plate member (the mounting member 120). In addition, in the present embodiment, each first positioning slot S1 has a guiding inclined surface S1a therein, and the two first positioning pillars P1 are used to enter the two first positioning slots S1 by being guided by the two guiding inclined surfaces S1 a. Similarly, each second positioning slot S2 has a guiding inclined plane S2a therein, and two second positioning posts P2 are used for entering two second positioning slots S2 guided by the two guiding inclined planes S2 a.

Fig. 10 is a partially enlarged view of the mounting bracket of fig. 8, illustrating a partial structure of the region a of fig. 8. Fig. 11 is a perspective view of the positioning member, the elastic member and the nut of fig. 10. Fig. 12 is a perspective view of the spacer of fig. 11. Referring to fig. 10 to 12, in the present embodiment, the first positioning portion 210a of the mounting frame 210 has a first folding wall 212 and a second folding wall 214, and the first folding wall 212 and the second folding wall 214 have through

holes

212a and 214a, respectively. The electronic device 10 (shown in fig. 1 to 5) further includes a positioning element 300, an elastic element 400 and a nut 500. The positioning member 300 is movably connected to the mounting frame 210 along a direction D1 (the same as the extending direction D1 of fig. 6) and the positioning member 300 includes a through portion 310 and a head portion 320, the head portion 320 is located at one end of the through portion 310. The through portion 310 is disposed through the through hole 212a of the first folding wall 212 and the through hole 214a of the second folding wall 214, and the elastic element 400 is, for example, a compression spring and is sleeved on the through portion 310. The first folding wall 212 is located between the head 320 and the elastic element 400, the nut 500 is located between the elastic element 400 and the second folding wall 214, the through portion 310 has a thread 310a, and the nut 500 is screwed to the through portion 310 by the thread 310 a. The two ends of the elastic member 400 are respectively abutted against the nut 500 and the first folding wall 212 and compressed between the first folding wall 212, the second folding wall 214, the penetrating portion 310 and the nut 500. The through portion 310 protrudes from the through hole 214a of the second flap 214 by the elastic force of the elastic member 400. The first and second

folding walls

212 and 214 are formed by folding a metal plate (the mounting bracket 210), for example.

Fig. 13 is a partial perspective view of the electronic device of fig. 1. Fig. 14 is a partial cross-sectional view of the electronic device of fig. 1. Referring to fig. 13 and 14, the mounting member 120 of the electronic device 100 has a positioning folding wall 1203, the positioning folding wall 1203 is located on the mounting member 120 and corresponds to the first folding wall 212 and the second folding wall 214 of the mounting frame 210, and the mounting member 120 has a positioning hole 120a on the positioning folding wall 1203. The through hole 310 protruding from the through hole 214a of the second folding wall 214 is positioned in the positioning hole 120a of the positioning folding wall 1203 of the mounting member 120 by the elastic force of the elastic member 400. Thereby, the electronic device 100 and the mounting member 120 thereof can be more firmly positioned on the mounting frame 210. The positioning folded wall 1203 is, for example, a folded wall formed by folding a metal plate (the mounting member 120).

When the electronic device 100 is mounted, the positioning folding wall 1203 of the mounting member 120 moves along the path R shown in fig. 14 in the process that the user rotates the device housing 110 and the mounting member 120 from the state shown in fig. 9 to the state shown in fig. 6 to move the second positioning post P2 into the second positioning slot S2 as shown in fig. 6. When the positioning folding wall 1203 moves to the position where the through hole 310 protrudes from the through hole 214a of the second folding wall 214, the positioning folding wall 1203 presses the through hole 310 downwards against the elastic force of the elastic element 400 until the positioning hole 120a on the positioning folding wall 1203 is aligned with the through hole 214a of the second folding wall 214, and the through hole 310 moves upwards and is positioned in the positioning hole 120a by the elastic force of the elastic element 400. When disassembling the electronic device 100, the user can manually pull the positioning element 300 downwards against the elastic force of the elastic element 400 to move the penetrating portion 310 away from the positioning hole 120a, so as to release the positioning relationship between the positioning element 300 and the positioning hole 120a, and further slide the second positioning post P2 and the first positioning post P1 of the mounting element 120 of the electronic device 100 out of the second positioning slot S2 and the first positioning slot S1 of the mounting frame 210, respectively, thereby completing the disassembly.

Fig. 15 is a side view of a portion of the components of the electronic device of fig. 1. Fig. 16 is an exploded view of the electronic device of fig. 15. Referring to fig. 15 and fig. 16, the electronic device 100 of the present embodiment further includes a structural reinforcement member 130, the structural reinforcement member 130 is, for example, a metal plate and is at least partially disposed inside the device housing 110, and the mounting member 120 is connected to the structural reinforcement member 130 at the rear side 110a of the device housing 110. The structural reinforcement member 130 can improve the structural strength of the electronic device 100 and make it firmly connected to the mounting member 120. More specifically, the device housing 110 has a top surface 110b adjacent to the rear side surface 110a, and the structural reinforcement member 130 includes a first structural reinforcement section 132 and a second structural reinforcement section 134 connected to each other, the first structural reinforcement section 132 extends along the top surface 110b of the device housing 110, the second structural reinforcement section 134 extends along the rear side surface 110b of the device housing 110, and the first structural reinforcement section 132 and the second structural reinforcement section 134 form an L-shaped structure, for example. In other embodiments, the structural reinforcement member 130 may have other suitable shapes, and the invention is not limited thereto. In addition, in other embodiments, the structural reinforcement member 130 and the mounting member 120 may be integrally connected, that is, the second structural reinforcement section of the structural reinforcement member 130 replaces the rear side of the device housing, which is not limited by the invention.

Referring to fig. 7, a boss structure 110c is formed on the device housing 110 of the present embodiment, the electronic device 100 has a signal input interface 110c1 at the rear side of the boss structure 110c, and the signal input interface 110c1 is not coplanar with the rear side 110a of the device housing 110. When the mounting block 210 is fixed to the fixing surface 50 (shown in fig. 3) and the mounting element 120 is connected to the mounting block 210, the signal input interface 110c1 faces the fixing surface 50, and the distance between the signal input interface 110c and the fixing surface 50 is greater than the distance between the rear side surface 110a and the fixing surface 50. Thereby, the signal line can be inserted into the signal input interface 110c1 at the rear side of the boss structure 110c of the device housing 110 without excessively affecting the appearance of the electronic apparatus 10.

The following describes the configuration of the stick 220 for mounting the projection screen 20 in this embodiment in detail. Fig. 17A and 17B illustrate the rotation of the rod of fig. 5 relative to the mounting bracket. In this embodiment, the rod 220 of the mounting assembly 200 is pivotally connected to the second mounting portion 210B of the mounting bracket 210 and is configured to rotate between a first position shown in fig. 17A and a second position shown in fig. 17B. When the stick 220 is located at the first position, the stick 220 is folded at one side of the first installation portion 210a, when the stick 220 is located at the second position, the stick 220 is unfolded at one side of the second installation portion 210b and the two sticks 220 extend toward two opposite sides of the second installation portion 210b, respectively, and the projection screen 20 (shown in fig. 4) is used for being installed on the stick 220 located at the second position.

More specifically, referring to fig. 4 and 17B, each of the rods 220 is provided with a first bending portion 222, the projection screen 20 is provided with two second bending portions 22, and each of the second bending portions 22 is correspondingly hung on the first bending portion 222, so that the projection screen 20 is mounted on the rod 220 (shown in fig. 3). In other embodiments, the projection screen 20 can be mounted on the rod 220 by other suitable structures, which is not limited in the present invention.

Fig. 18 is an enlarged partial view of the mounting assembly of fig. 17B. Referring to fig. 18, since the number of the rod bodies is two, the mounting assembly 200 further includes two pivot connection members 230 and two fastening pads 240, each pivot connection member 230 is disposed through the corresponding rod body 220 and the second mounting portion 210b, and each fastening pad 240 is disposed between the second mounting portion 210b and the pivot connection member 230. The fastening pad 240 is, for example, a plastic or other element with a smaller hardness, and can fasten the pivot 230 to the rod 220 and the second mounting portion 210b by deformation thereof.

FIG. 19 is a partial enlarged view of the mounting assembly of FIG. 17B from another perspective. Referring to fig. 19, each lever 220 has a positioning protrusion 224, and when the lever 220 is located at the second position, the positioning protrusion 224 abuts against the bottom edge of the first mounting portion 210a to position the lever 220, so that the lever 220 is maintained in the state shown in fig. 17B. In detail, each rod 220 includes a mounting section 220a, a pivot section 220b and a positioning section 220c (shown in fig. 19), the pivot section 220b is connected between the mounting section 220a and the positioning section 220c, the pivot section 220b is pivoted to the second mounting portion 210b of the mounting frame, the projection screen 20 is configured to be mounted on the mounting section 220a, and the positioning protrusion 224 is formed on the positioning section 220c, for example, on the upper edge of the positioning section 220c, so as to abut against the bottom edge of the first mounting portion 210 a.

In summary, the embodiments of the invention have at least one of the following advantages or effects. In the electronic equipment of the invention, the mounting part of the electronic device is arranged on the rear side surface of the device shell, so that when the electronic device is mounted on the mounting rack on a fixed surface (such as a wall surface) by the mounting part, the mounting part and the mounting rack are positioned between the rear side surface of the device shell and the fixed surface and are not excessively obtrusive in vision, thereby leading the electronic equipment to be more beautiful. In addition, when the electronic device is installed, the electronic device can be positioned on the fixing surface only by moving the positioning column of the installation part of the electronic device into the positioning groove of the installation frame on the fixing surface, so that the electronic device is convenient to install. The electronic device is, for example, an ultra-short-focus projector, and therefore, the known cantilever design is not required.

It should be understood that the above-mentioned embodiments are only preferred embodiments of the present invention, and that the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made by the claims and the summary of the invention should be included in the scope of the present invention. It is not necessary for any embodiment or claim of the invention to address all of the objects, advantages, or features disclosed herein. In addition, the abstract and the title of the invention are provided for assisting the search of patent documents and are not intended to limit the scope of the invention. Furthermore, the terms "first", "second", and the like in the description or the claims are used only for naming elements (elements) or distinguishing different embodiments or ranges, and are not used for limiting the upper limit or the lower limit on the number of elements.

Description of reference numerals:

1: projection system

10: electronic device

20: projection screen

22: a second bent part

50: fixing surface

60: image forming method

100: electronic device

110: device shell

110 a: rear side

110 b: the top surface

110 c: boss structure

110c 1: signal input interface

120: mounting member

1201: second side plate

1202: screw locking piece

1203: positioning folding wall

120 a: locating hole

130: structural reinforcement

132: first structural reinforcement section

134: second structural reinforcement section

200: mounting assembly

210: mounting rack

2101: first side plate

210 a: first mounting part

210 b: second mounting part

212: first folding wall

212a, 214 a: perforation

214: second folded wall

220: rod body

220 a: mounting section

220 b: pivot section

220 c: positioning section

222: a first bending part

224: positioning lug

230: pin joint piece

240: fastening gasket

300: locating piece

310: piercing part

310 a: screw thread

320: head part

400: elastic piece

500: nut

D1, D2: direction of extension

H: in the horizontal direction

P1: first positioning column

P2: second positioning column

R: route of travel

S1: first positioning slot

S1a, S2 a: guide slope

S2: the second positioning slot.

Claims

1. An electronic device, comprising a mounting frame and an electronic apparatus, wherein:

the mounting frame is used for being fixed on the fixing surface and is provided with two first positioning grooves and two second positioning grooves, the two first positioning grooves correspond to each other in the horizontal direction, and the two second positioning grooves correspond to each other in the horizontal direction; and

the electronic device comprises a device shell and an installation part, wherein the device shell is provided with a rear side face, the installation part is used for being connected with the rear side face and is provided with two first positioning columns and two second positioning columns, the two first positioning columns are used for respectively entering the two first positioning grooves, the two second positioning columns are used for respectively entering the two second positioning grooves so as to position the installation part on the installation frame, and the rear side face faces the fixing face,

wherein the extending direction of the two first positioning slots is not perpendicular to the rear side of the device shell,

wherein the two second positioning slots extend in a direction perpendicular to the rear side of the device housing, an

Wherein the mounting bracket is sheet metal, the mounting bracket includes that the orientation is kept away from two convex first curb plates of stationary plane, two first location flutings are located respectively the mounting bracket relative two first curb plates, two second location flutings are located respectively the mounting bracket is relative two first curb plates.

2. The electronic device of claim 1, wherein the electronic device is an ultra-short-focus projector and is configured to project an image in a direction of the fixed surface.

3. The electronic device of claim 2, comprising a projection screen, wherein the projection screen is configured to be mounted to the mounting bracket, and wherein the image is configured to be projected onto the projection screen.

4. The electronic apparatus according to claim 1, wherein the mounting member is a metal plate, the mounting member includes two second side plates protruding away from the rear side of the electronic device, the two first positioning pillars are respectively located on the two second side plates, and the two second positioning pillars are respectively located on the two second side plates.

5. The electronic apparatus of claim 1, wherein each of the two second positioning slots has a guiding slant therein, and the two positioning pillars are used for entering the two second positioning slots guided by the guiding slant.

6. The electronic device of claim 1, wherein each of the two first positioning slots has a guiding inclined surface therein, and the two first positioning posts are used for entering the two first positioning slots by being guided by the guiding inclined surfaces.

7. The electronic device of claim 1, wherein the two first positioning slots extend parallel to the rear side.

8. The electronic device of claim 1, comprising a positioning member and an elastic member, wherein the positioning member is movably connected to the mounting frame, the elastic member is compressed between the positioning member and the mounting frame, the mounting frame has a positioning hole, and the positioning member is configured to be positioned in the positioning hole by an elastic force of the elastic member.

9. The electronic device of claim 8, wherein the mounting bracket has a first folding wall and a second folding wall, the first folding wall and the second folding wall have a through hole, the positioning element includes a penetrating portion and a head portion, the penetrating portion penetrates the through hole of the first folding wall and the through hole of the second folding wall, the elastic element is sleeved on the penetrating portion and compressed between the first folding wall and the second folding wall, the first folding wall is located between the head portion and the elastic element, and the penetrating portion protrudes from the through hole of the second folding wall and is located in the positioning hole of the mounting element.

10. The electronic device of claim 9, wherein the mounting member is a metal plate and has positioning folded walls corresponding to the first folded wall and the second folded wall of the mounting member, and the positioning holes are located in the positioning folded walls.

11. The electronic device of claim 9, wherein the electronic device comprises a nut, wherein the nut is located between the elastic member and the second folded wall, and the through portion has a thread and is screwed to the nut by the thread.

12. The electronic device of claim 1, wherein the electronic device includes a structural stiffener disposed within the device housing, the mounting member being coupled to the structural stiffener at the rear side.

13. The electronic device of claim 12, wherein the device housing has a top surface adjacent to the back side surface, and the structural reinforcement member comprises a first structural reinforcement section and a second structural reinforcement section connected together, the first structural reinforcement section extending along the top surface and the second structural reinforcement section extending along the back side surface.

14. The electronic device of claim 12, wherein the structural reinforcement member is a sheet metal member.

15. The electronic device of claim 12, wherein the structural reinforcement member is integrally connected with the mounting member.

16. The electronic device of claim 1, wherein the electronic device has a signal input interface that is not coplanar with the rear side of the device housing, wherein the signal input interface faces the mounting surface when the mounting bracket is secured to the mounting bracket and the mounting member is coupled to the mounting bracket, and wherein a distance between the signal input interface and the mounting surface is greater than a distance between the rear side and the mounting surface.