Projection device and projection system

Abstract

The utility model provides a projection device and a projection system, and the projection device comprises a laser host which is used for projecting an image light beam; the shell comprises a body, the body is provided with a containing cavity and a light outlet, the containing cavity is used for containing the laser host, and the light outlet is located in the top of the body; the support unit is provided with a notch, the light outlet is located in the notch, the support unit comprises a first support and a second support, the first support is arranged on the second support, the second support is arranged on the top wall of the body, the first support is located on the side, away from the body, of the second support, the first support is a metal support, and the second support is a plastic support. The weight of the whole projection device is reduced, and finally the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of projection, in particular to a projection device and a projection system. Background Art

[0002] With the continuous development of society, people's pursuits are also constantly changing. Laser projection products are increasingly used in people's work and life. The competition in laser projection products is becoming more and more fierce, and higher requirements are also placed on the material cost of products. For products with the same metal appearance, the lower the material cost, the higher the market competitiveness.

[0003] At present, the metal upper shell of current laser display products mostly adopts aluminum plate appearance.

[0004] However, the existing metal upper shell can only be processed for each product individually during appearance processing, and the product consistency is poor; in addition, the aluminum plate appearance product is heavy, which invisibly increases the transportation cost of the product. Utility Model Content

[0005] The main purpose of the utility model is to provide a projection device and a projection system, the weight of the entire projection device is reduced, and the cost is finally reduced.

[0006] To achieve the above objectives, in a first aspect, the utility model provides a projection device, comprising:

[0007] Laser host, the laser host is used to project image beams;

[0008] The housing comprises a main body, the main body has a receiving cavity and a light outlet, the receiving cavity is used to receive the laser host, and the light outlet is located at the top of the main body;

[0009] The bracket unit is provided with a notch, and the light outlet is located in the notch. The bracket unit includes a first bracket and a second bracket. The first bracket is arranged on the second bracket, and the second bracket is arranged on the top wall of the main body. The first bracket is located on a side of the second bracket away from the main body, wherein the first bracket is a metal bracket and the second bracket is a plastic bracket.

[0010] The beneficial effect of the present invention is that, compared with the existing entire bracket unit being made of a thicker metal material, the present application forms the thickness of the existing bracket unit by superimposing the first bracket and the second bracket. Since the first bracket is a metal bracket, the appearance and strength are ensured. The second bracket is a plastic bracket that shares a certain thickness to reduce the weight, so that the weight of the entire bracket unit is lighter, and then the weight of the entire projection device is reduced, thereby reducing the cost.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] In some optional embodiments, at least one of the first bracket and the second bracket is a plate-shaped member, and the first bracket and the second bracket are an integral structure.

[0013] In some optional embodiments, along the thickness direction of the bracket unit, the board thickness of the first bracket is less than or equal to the board thickness of the second bracket.

[0014] In some optional embodiments, a conductive unit is further included, the conductive unit includes an elastic block and a conductive member, a first end of the elastic block is connected to the second bracket, and a second end of the elastic block is located above the metal frame in the body;

[0015] The first end of the conductive member is connected to the first bracket, and the second end of the conductive member is connected to the second end of the elastic block. When the first end of the elastic block is compressed, the second end of the elastic block drives the second end of the conductive member to press against the metal frame in the body.

[0016] In some optional embodiments, the conductive member is a conductive cloth;

[0017] The main body is provided with a first mounting opening and a second mounting opening, the first mounting opening is used for mounting the elastic block, and the second mounting opening is used for mounting the conductive member;

[0018] The second bracket is also provided with a plurality of third buckles, which are buckled at the peripheral edges of the first mounting opening and the second mounting opening respectively.

[0019] In some optional embodiments, the second bracket is provided with a first positioning column and a second positioning column, and the first positioning column and the second positioning column are arranged at intervals along the extension direction of the second bracket;

[0020] The main body is provided with a limiting hole and an adjusting hole. The first positioning column cooperates with the limiting hole so that the first positioning column extends into the limiting hole. The second positioning column cooperates with the adjusting hole. The adjusting hole extends along the width direction of the main body so that the second positioning column extends into the adjusting hole and can be located at different positions of the adjusting hole.

[0021] In some optional embodiments, the second bracket is further provided with a first buckle and a second buckle, the first buckle is located at an edge of the second bracket, the second buckle is located in the middle of the second bracket, and the buckle portion of the first buckle and the buckle portion of the second buckle extend in opposite directions;

[0022] The main body is provided with a first groove and a second groove, which are respectively located at different sides of the light outlet in the circumferential direction, the buckle portion of the first buckle member is buckled with the groove wall of the first groove, and the buckle portion of the second buckle member is buckled with the groove wall of the second groove.

[0023] In some optional embodiments, a connecting piece is further included, a first connecting hole is formed on the main body, a second connecting hole is formed on the second bracket, and the connecting piece passes through the first connecting hole and the second connecting hole in sequence to connect the main body and the second bracket.

[0024] In a second aspect, the utility model further provides a projection device, comprising:

[0025] Laser host, the laser host is used to project image beams;

[0026] The housing comprises a main body, and the laser host is arranged in the main body;

[0027] The bracket unit is arranged on the main body, and at least a part of the structure of the bracket unit is a plastic part.

[0028] In a third aspect, the utility model further provides a projection system, comprising a projection screen and the above-mentioned projection device, wherein the projection device is used to project a projection picture onto the projection screen.

[0029] The utility model provides a projection device and a projection system, wherein the projection system comprises a projection screen and a projection device, wherein the projection device is used to project a projection picture onto the projection screen; wherein the projection device comprises: a laser host, wherein the laser host is used to project an image beam; a shell, wherein the shell comprises a body, wherein the body has a receiving cavity and a light outlet, wherein the receiving cavity is used to receive the laser host, and the light outlet is located at the top of the body; and a bracket unit, wherein the bracket unit is provided with a notch, wherein the light outlet is located in the notch, wherein the bracket unit comprises a first bracket and a second bracket, wherein the first bracket is arranged on the second bracket, and the second bracket is arranged on the top wall of the body, and the first bracket is located on a side of the second bracket away from the body, wherein the first bracket is a metal bracket, and the second bracket is a plastic bracket.

[0030] Through the configuration of the first bracket, the second bracket, and the first bracket being a metal bracket and the second bracket being a plastic bracket, compared to the existing entire bracket unit being made of a thicker metal material, the present application increases the thickness of the existing bracket unit by stacking the first bracket and the second bracket. Since the first bracket is a metal bracket, the appearance is ensured to be beautiful and strong. The second bracket is a plastic bracket that shares a certain thickness to reduce the weight, making the weight of the entire bracket unit lighter, thereby reducing the weight of the entire projection device, and ultimately reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 An exploded view of a projection device provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a projection device provided in an embodiment of the present application;

[0034] Figure 3 for Figure 2 A-A' cross-sectional view;

[0035] Figure 4 for Figure 3 A partial enlarged view of point I in the middle;

[0036] Figure 5 A schematic diagram of the structure of a first viewing angle of a main body in a projection device provided in an embodiment of the present application;

[0037] Figure 6 for Figure 5 A partial enlarged view of point II in the middle.

[0038] Figure 7 An exploded view of a bracket unit in a projection device provided in an embodiment of the present application;

[0039] Figure 8 for Figure 5 A partial enlarged view of the part III in the middle;

[0040] Fig. 9 A schematic diagram of the structure of the second viewing angle of the main body in the projection device provided in an embodiment of the present application;

[0041] Fig.10 for Figure 7 A partial enlarged view of the IV in the middle;

[0042] Fig.11 for Figure 7 A partial enlarged view of the middle V;

[0043] Description of reference numerals:

[0044] 100- projection device;

[0045] 110-housing;

[0046] 111-Ontology;

[0047] 1111-first installation port;

[0048] 1112- second installation port;

[0049] 1113-limiting hole;

[0050] 1114-adjustment hole;

[0051] 1115-first connecting hole;

[0052] 1116-first groove;

[0053] 1117-second groove;

[0054] 1118-accommodation chamber;

[0055] 1119-Light exit;

[0056] 1120-sound hole;

[0057] 120-bracket unit;

[0058] 121- first bracket;

[0059] 122- second bracket;

[0060] 1221- first fastener;

[0061] 1222- second fastener;

[0062] 1223-third fastener;

[0063] 1224-first positioning column;

[0064] 1225-second positioning column;

[0065] 1226-second connecting hole;

[0066] 130-conductive unit;

[0067] 131-elastic block;

[0068] 132-conductive member;

[0069] 140-mesh cover;

[0070] 150-dust cover;

[0071] 160-Metal rack. DETAILED DESCRIPTION

[0072] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. All other embodiments obtained are within the scope of protection of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] At present, the metal upper shells of current laser display products mostly adopt aluminum plate appearance. However, the existing metal upper shells can only be processed for each product individually when doing appearance processing, and the product consistency is poor; in addition, the aluminum plate appearance products are heavier, which invisibly increases the transportation cost of the products.

[0077] In order to overcome the defects in the prior art, the projection device and projection system provided by the utility model are provided with a first bracket, a second bracket, and the first bracket is a metal bracket and the second bracket is a plastic bracket. Compared with the existing entire bracket unit which is made of a thicker metal material, the present application forms the thickness of the existing bracket unit by superimposing the first bracket and the second bracket. Since the first bracket is a metal bracket, the appearance is beautiful and the strength is ensured. The second bracket is a plastic bracket that shares a certain thickness to reduce the weight, so that the weight of the entire bracket unit is lighter, and then the weight of the entire projection device is reduced, thereby reducing the cost.

[0078] The content of the utility model will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the content of the utility model more clearly and in detail.

[0079] Figure 1 An exploded view of a projection device provided in an embodiment of the present application, Figure 2 A schematic diagram of the structure of a projection device provided in an embodiment of the present application, Figure 3 for Figure 2 The cross-sectional view of A-A', Figure 4 for Figure 3 A partial enlarged view of point I in the middle.

[0080] like Figures 1 to 4 As shown, the embodiment of the present application provides a projection device 100, including:

[0081] Laser host, the laser host is used to project image beams;

[0082] It should be noted that the laser host may include structures such as a lighting component and a projection lens. The laser host can project an image beam, and the image beam can project an image on a projection screen for users to watch.

[0083] The housing 110 includes a body 111, the body 111 has a receiving cavity 1118 and a light outlet 1119, the receiving cavity 1118 is used to receive the laser host, and the light outlet 1119 is located at the top of the body 111;

[0084] It should be noted that the laser host projects an image beam through the light outlet 1119 .

[0085] The bracket unit 120 is provided with a notch, and the light outlet 1119 is located in the notch. The bracket unit 120 includes a first bracket 121 and a second bracket 122. The first bracket 121 is arranged on the second bracket 122, and the first bracket 121 is located on the side of the second bracket 122 away from the main body 111. The second bracket 122 is arranged on the top wall of the main body 111. The first bracket 121 is a metal bracket, and the second bracket 122 is a plastic bracket.

[0086] Through the above-mentioned configuration, that is, through the configuration of the first bracket 121, the second bracket 122, and the first bracket 121 being a metal bracket and the second bracket 122 being a plastic bracket, compared with the existing entire bracket unit 120 being made of a thicker metal material, the present application forms the thickness of the existing bracket unit 120 by stacking the first bracket 121 and the second bracket 122. Since the first bracket 121 is a metal bracket, the appearance is ensured to be beautiful and strong. The second bracket 122 is a plastic bracket that shares a certain thickness to reduce the weight, so that the weight of the entire bracket unit 120 is lighter, and then the weight of the entire projection device 100 is reduced, thereby reducing the cost ultimately.

[0087] It should be noted that each structure is described in detail below.

[0088] The laser host may include a light source, an optical machine and a lens connected in sequence along the light beam transmission direction. The pattern formed by the light source, the optical machine and the lens connected in sequence may be L-shaped, making the structure of the laser host more compact.

[0089] When the projection device 100 is working, the light source of the laser host can provide a laser beam to the optical machine, and the optical machine can modulate the laser beam provided by the light source and project the modulated laser beam onto the lens, so that the laser beam is emitted from the lens to the projection screen and reflected on the projection screen so that the user can view the image.

[0090] Exemplarily, the above optical machine may include a plurality of lens groups, such as a total internal reflection (TIR) ​​prism and a reverse total internal reflection (RTIR) mirror, for forming an illumination light path so that the illumination light beam can be incident on the core device in the optical machine, namely, a light valve, which is used to modulate the light beam and make the modulated light beam incident on the lens group of the lens for imaging. On this basis, another exemplary embodiment, the light valve may be a digital micromirror device (DMD).

[0091] Exemplarily, the above-mentioned lens may be an ultra-short-throw projection lens, which generally includes a refractor and a reflector group, and is used to receive the light beam reflected by the DMD for imaging. The ultra-short-throw projection lens corrects and amplifies the imaging light beam, and after reflection, it is incident on the projection screen for imaging. The ultra-short-throw projection device can achieve a smaller projection ratio (the projection ratio is the ratio of the vertical distance from the center point of the lens light-emitting surface to the plane where the projection screen is located to the width of the display area on the projection screen, where the width of the display area refers to the size of the display area in the horizontal direction), such as less than or equal to 0.3, so when projecting an image, the projection device 100 can be closer to the projection screen to reduce the overall space occupied by the laser TV.

[0092] In some embodiments, the overall shape of the projection device 100 may be approximately a rectangular parallelepiped.

[0093] It should be noted that the main body 111 is used to install the laser host, and the accommodating space of the main body 111 is slightly larger than the external dimensions of the laser host.

[0094] In some examples, the body 111 may be a metal member, and its material may include one or more of copper, iron, aluminum, tin, and lead.

[0095] In some other examples, the body 111 may be made of plastic.

[0096] It should be noted that the specific material of the main body 111 is not excessively limited in the embodiments of the present application.

[0097] Of course, during manufacturing, the main body 111 can also be made of steel plates, plastics or synthetic materials while ensuring strength.

[0098] It should be noted that the notch is provided so that the light outlet 1119 can be exposed to the outside, which facilitates the light to be emitted from the light outlet 1119 . Therefore, the size of the notch is greater than or equal to the size of the light outlet 1119 .

[0099] In addition, it should be noted that the first bracket 121 and the second bracket 122 are sequentially stacked on the top wall of the body 111 .

[0100] In some embodiments, the first bracket 121 and the second bracket 122 , and the second bracket 122 and the body 111 may be connected in a detachable connection manner or a fixed connection manner.

[0101] For example, bolts, buckles or hanging connections are used. Specifically, the embodiments of the present application are not too restrictive here.

[0102] like Figures 1 to 4As shown, in some optional embodiments, at least one of the first bracket 121 and the second bracket 122 is a plate-shaped member, and the first bracket 121 and the second bracket 122 are an integral structure.

[0103] It should be noted that both the first bracket 121 and the second bracket 122 are plate-shaped members, and the edge shapes and structures of the first bracket 121 and the second bracket 122 are the same.

[0104] In addition, stamping the first bracket 121 and the second bracket 122 into an integrated structure can avoid the problem of separate production of each product, which would lead to poor product consistency.

[0105] In some embodiments, the first bracket 121 uses a sheet metal mold to punch out the outline of the second bracket 122, is cut from a large surface of a plate with appearance treatment, and is assembled by coating or dispensing. The coating model is 3M9888T; the first bracket 121 and the second bracket 122 constitute a bracket unit 120.

[0106] In some embodiments, the first bracket 121 may be an aluminum sheet.

[0107] In some embodiments, the second bracket 122 can be made of plastic material. During injection molding, the molten plastic is injected into the plastic product mold by pressure, and the desired plastic part is obtained by cooling and molding. The injection molding process can be completed by a mechanical injection molding machine, and the material of the reinforcing rib and the first support member can include one or more of polyethylene, polypropylene, ABS (a terpolymer of three monomers of acrylonitrile (A), butadiene (B), and styrene (S)), polyamide, and polystyrene.

[0108] like Figures 1 to 4 As shown, in some optional embodiments, along the thickness direction of the bracket unit 120 , the board thickness of the first bracket 121 is less than or equal to the board thickness of the second bracket 122 .

[0109] It should be noted that by setting the second bracket 122 with a larger thickness as a plastic bracket, a certain thickness is shared to reduce the weight, so that the weight of the entire bracket unit 120 is lighter, and the weight of the entire projection device 100 is reduced, thereby reducing the cost.

[0110] In some embodiments, the thickness of the first bracket 121 is smaller than the thickness of the second bracket 122 , so that the entire weight is lighter and the cost reduction effect is more significant.

[0111] Of course, the board thickness of the first bracket 121 can be greater than or equal to the board thickness of the second bracket 122, or as long as the second bracket 122 exists, as for the ratio of thickness, the embodiment of the present application can be adjusted according to actual conditions.

[0112] It should be noted that when the first bracket 121 and the second bracket 122 are both plate-like members, and the entire structure is plate-like as a whole, that is, the plate surface of the plate is in the same horizontal plane; of course, the first bracket 121 and the second bracket 122 can be plate-like members with local protrusions or protrusions on the edges, and the plate surface thickness of the plate-like member here refers specifically to the thickness of the flat plate part of the bracket.

[0113] For ease of explanation, Figure 1 As shown, B represents the thickness direction of the bracket unit 120 .

[0114] Figure 5 This is a schematic diagram of the structure of the first viewing angle of the main body in the projection device provided in the embodiment of the present application, Figure 6 for Figure 5 A partial enlarged view of point II in the middle.

[0115] like Figures 1 to 6 As shown, in some optional embodiments, a conductive unit 130 is further included, and the conductive unit 130 includes an elastic block 131 and a conductive member 132. The first end of the elastic block 131 is connected to the second bracket 122, and the second end of the elastic block 131 is located above the metal frame 160 in the body 111;

[0116] The first end of the conductive member 132 is connected to the first bracket 121 , and the second end of the conductive member 132 is connected to the second end of the elastic block 131 . When the first end of the elastic block 131 is compressed, the second end of the elastic block 131 drives the second end of the conductive member 132 to be pressed against the metal frame 160 in the body 111 .

[0117] It should be noted that the bracket unit 120 has a large metal appearance and is likely to fail the EMC electrostatic test. To solve this problem, the first bracket 121 of the bracket unit 120 needs to be connected to the internal metal parts of the body 111.

[0118] Specifically, the elastic block 131 is arranged between the second bracket 122 and the metal frame 160 in the main body 111, and the conductive member 132 is arranged between the first bracket 121 and the second end of the elastic block 131, so that the conductive member 132 contacts the metal frame 160 in the main body 111 to form a passage after the elastic block 131 is compressed. In addition, the first end of the conductive member 132 is arranged on the first bracket 121, that is, the aluminum sheet, and the corresponding position of the first bracket 121 is laser engraved for conduction, and the second end of the conductive member 132 is applied to the elastic block 131.

[0119] In addition, it should be noted that the compression force of the elastic block 131 acts on the second bracket 122 made of plastic, avoiding direct action on the first bracket 121 made of metal, thereby preventing the adhesive coating of the first bracket 121 and the second bracket 122 from failing and causing the risk of cracking.

[0120] In some embodiments, the elastic block 131 is foam.

[0121] like Figures 1 to 6 As shown, in some optional embodiments, the conductive member 132 is a conductive cloth;

[0122] The body 111 is provided with a first installation opening 1111 and a second installation opening 1112 . The first installation opening 1111 is used for installing the elastic block 131 , and the second installation opening 1112 is used for installing the conductive member 132 .

[0123] The second bracket 122 is further provided with a plurality of third fasteners 1223 , which are respectively fastened to the peripheral edges of the first installation opening 1111 and the second installation opening 1112 .

[0124] It should be noted that the first installation opening 1111 and the second installation opening 1112 are provided to facilitate the installation of the elastic block 131 and the conductive member 132. Accordingly, the second bracket 122 also has two corresponding installation openings to match the first installation opening 1111 and the second installation opening 1112.

[0125] In addition, the third snapping members 1223 are snapped onto the peripheral edges of the first mounting opening 1111 and the second mounting opening 1112 to enhance the connection strength between the body 111 and the second bracket 122 and prevent the second bracket 122 from deforming when the conductive member 132 is attached.

[0126] Figure 7 An exploded view of a bracket unit in a projection device provided in an embodiment of the present application, Figure 8 for Figure 5 A partial enlarged view of point III in the middle. Fig. 9 This is a schematic diagram of the structure of the second viewing angle of the main body in the projection device provided in an embodiment of the present application. Fig.10 for Figure 7 A partial enlarged view of IV in the middle. Fig.11 for Figure 7 A partial enlarged view of the V in the middle.

[0127] like Figures 1 to 11 As shown, in some optional embodiments, the second bracket 122 is provided with a first positioning column 1224 and a second positioning column 1225, and the first positioning column 1224 and the second positioning column 1225 are arranged at intervals along the extension direction of the second bracket 122;

[0128] The main body 111 is provided with a limiting hole 1113 and an adjusting hole 1114, the first positioning column 1224 cooperates with the limiting hole 1113 so that the first positioning column 1224 extends into the limiting hole 1113, the second positioning column 1225 cooperates with the adjusting hole 1114, and the adjusting hole 1114 extends along the width direction of the main body 111 so that the second positioning column 1225 extends into the adjusting hole 1114, and can be located at different positions of the adjusting hole 1114.

[0129] It should be noted that the first positioning column 1224 extends into the limiting hole 1113, and the second positioning column 1225 extends into the adjusting hole 1114, thereby limiting the second bracket 122 in the length direction of the body 111 to prevent it from shaking.

[0130] In addition, the first positioning column 1224 and the limiting hole 1113 are precisely positioned, and the matching clearance is small. The adjustment hole 1114 can be an oblong hole, so that when it cooperates with the second positioning column 1225, the second positioning column 1225 can move in the adjustment hole 1114 along the runway direction, preventing the second bracket 122 from being unable to be assembled due to excessive tolerance.

[0131] In some embodiments, there are at least two second positioning columns 1225 and adjustment holes 1114, at least two second positioning columns 1225 are respectively located on opposite sides of the first positioning column 1224, the first positioning column 1224 is located in the middle of the second bracket 122, and at least two adjustment holes 1114 are respectively located on opposite sides of the limiting hole 1113.

[0132] like Figures 1 to 11 As shown, in some optional embodiments, the second bracket 122 is further provided with a first buckle 1221 and a second buckle 1222, the first buckle 1221 is located at the edge of the second bracket 122, the second buckle 1222 is located in the middle of the second bracket 122, and the buckle portion of the first buckle 1221 and the buckle portion of the second buckle 1222 extend in opposite directions;

[0133] A first groove 1116 and a second groove 1117 are formed on the main body 111. The first groove 1116 and the second groove 1117 are respectively located on different sides of the light outlet 1119 in the circumferential direction. The buckling portion of the first buckle 1221 is buckled with the groove wall of the first groove 1116, and the buckling portion of the second buckle 1222 is buckled with the groove wall of the second groove 1117.

[0134] It should be noted that the buckle portion of the first buckle 1221 is buckled with the groove wall of the first groove 1116 to prevent the corner of the second bracket 122 from being deformed, and the buckle portion of the second buckle 1222 is buckled with the groove wall of the second groove 1117 to prevent the middle position of the second bracket 122 from being deformed and convex, thereby meeting the pre-installation of the second bracket 122. In addition, the second bracket 122 is limited in the length direction of the body 111 to prevent it from shaking.

[0135] It should be noted that by configuring the second bracket 122, the first fastener 1221 and the second fastener 1222 to be integrally formed, not only can the connection strength between the second bracket 122, the first fastener 1221 and the second fastener 1222 be improved, but also a seamless connection between the second bracket 122, the first fastener 1221 and the second fastener 1222 can be achieved, thereby reducing the risk of cracking at the connection position of the second bracket 122, the first fastener 1221 and the second fastener 1222.

[0136] like Figures 1 to 11 As shown, in some optional embodiments, a connecting piece is further included, a first connecting hole 1115 is opened on the main body 111, and a second connecting hole 1226 is opened on the second bracket 122. The connecting piece passes through the first connecting hole 1115 and the second connecting hole 1226 in sequence to connect the main body 111 and the second bracket 122.

[0137] In order to further fix and install the second bracket 122 , specifically, the second bracket 122 and the body 111 are connected through a connecting piece and the first connecting hole 1115 and the second connecting hole 1226 .

[0138] It should be noted that, by combining the pre-installation and the screw installation, the second bracket 122 is installed more stably and with higher installation strength.

[0139] It should be noted that in the embodiment of the present application, considering the cost of the connecting piece, the connecting piece can be a threaded fastener. Correspondingly, a first connecting hole 1115 is opened on the main body 111. The first connecting hole 1115 can be a threaded hole. The connecting piece can pass through the first connecting hole 1115 and can be tightened or loosened to adjust the fixing and disassembly states.

[0140] In addition, correspondingly, a second connecting hole 1226 is opened on the second bracket 122, and the second connecting hole 1226 can also be a threaded hole. The connecting member can pass through the second connecting hole 1226, and the fixing and disassembly states can be adjusted by tightening or loosening.

[0141] Specifically, the connecting piece passes through the first connecting hole 1115 and the second connecting hole 1226 in sequence and is tightened, thereby fixing the second bracket 122 to the main body 111. Of course, when the second bracket 122 needs to be removed, it is only necessary to loosen the connecting piece and then remove the connecting piece from the second connecting hole 1226 and the first connecting hole 1115 in sequence.

[0142] It should be noted that such a configuration can enhance the installation strength of the second bracket 122 and avoid shaking.

[0143] In some embodiments, the main body 111 also has a sound hole 1120, which is a speaker sound hole 1120. The main body 111 is also provided with a mesh cover 140, which is attached to the main body 111 to create a mesh appearance. The advantage of disassembling parts is that the appearance and functional requirements of the product are guaranteed.

[0144] In some embodiments, dust covers 150 are further disposed on both sides of the body 111 .

[0145] The projection device provided in the embodiment of the present application includes: a laser host, which is used to project an image beam; a shell, which includes a main body, which has a accommodating cavity and a light outlet, the accommodating cavity is used to accommodate the laser host, and the light outlet is located at the top of the main body; a bracket unit, the bracket unit is provided with a notch, and the light outlet is located in the notch, the bracket unit includes a first bracket and a second bracket, the first bracket is arranged on the second bracket, and the second bracket is arranged on the top wall of the main body, the first bracket is located on the side of the second bracket away from the main body, wherein the first bracket is a metal bracket and the second bracket is a plastic bracket.

[0146] Through the configuration of the first bracket, the second bracket, and the first bracket being a metal bracket and the second bracket being a plastic bracket, compared to the existing entire bracket unit being made of a thicker metal material, the present application increases the thickness of the existing bracket unit by stacking the first bracket and the second bracket. Since the first bracket is a metal bracket, the appearance is ensured to be beautiful and strong. The second bracket is a plastic bracket that shares a certain thickness to reduce the weight, making the weight of the entire bracket unit lighter, thereby reducing the weight of the entire projection device, and ultimately reducing the cost.

[0147] In addition, if Figures 1 to 11 As shown, the embodiment of the present application further provides a projection device 100, including:

[0148] Laser host, the laser host is used to project image beams;

[0149] The housing 110 includes a body 111, and the laser host is arranged in the body 111;

[0150] The bracket unit 120 is disposed on the body 111 , and at least a portion of the bracket unit 120 is a plastic part.

[0151] The projection device provided in the embodiment of the present application is configured with a first bracket, a second bracket, and the first bracket being a metal bracket and the second bracket being a plastic bracket. Compared with the existing entire bracket unit being made of a thicker metal material, the present application increases the thickness of the existing bracket unit by stacking the first bracket and the second bracket. Since the first bracket is a metal bracket, the appearance is aesthetically pleasing and the strength is ensured. The second bracket is a plastic bracket that shares a certain thickness to reduce the weight, so that the weight of the entire bracket unit is lighter, and then the weight of the entire projection device is reduced, thereby reducing the cost.

[0152] In addition, an embodiment of the present application further provides a projection system, including a projection screen and the above-mentioned projection device 100, wherein the projection device 100 is used to project a projection picture onto the projection screen.

[0153] The projection system provided in this embodiment specifically includes a projection device and the projection device in the aforementioned embodiment, and the projection device is used to project a projection picture onto a display film of a projection screen.

[0154] The specific structure, working principle and function of the projection device have been described in detail in the above-mentioned embodiment 1, and will not be repeated here.

[0155] Specifically, in the projection system of this embodiment, the projection device 100 can be any existing projector, such as a laser projector, etc. The projection device 100 can project a projection image onto the display film of the projection screen, so that the display film can display the projection image for people to watch.

[0156] The projection screen comprises a display film, and the front side of the display film is a projection light receiving surface.

[0157] It should be noted that the projection screen includes a diaphragm body and a connecting cloth. The diaphragm body is usually made of hard materials, including multiple optical structure layers, and has a certain degree of hardness, brittleness and rigidity compared to a soft screen. Therefore, when the diaphragm body is stretched, a relatively flat surface can be formed. In this way, at least part of the front area of ​​the diaphragm body can be used as a light receiving area for projecting images, so that the picture and image can be projected on the front of the diaphragm body for display.

[0158] Since the hard material constituting the diaphragm body is usually hard and brittle, if holes or grooves are directly punched on the hard diaphragm body for fixing, the diaphragm body is likely to crack.

[0159] In order to connect and fix the hard diaphragm body, the display diaphragm in this embodiment further includes a soft connecting cloth. The connecting cloth can be bonded to the hard diaphragm body and connected to other fixing structures, thereby completing the fixation of the diaphragm body.

[0160] At this time, the connecting cloth and the diaphragm body are bonded to each other, so the stretching degree of the connecting cloth will also affect the curling or unfolding of the diaphragm body.

[0161] In some examples, in order to achieve connection with the diaphragm body, the connecting cloth has a sufficient size to at least cover the area on the back of the diaphragm body opposite to the front light-receiving area. At this time, the back of the light-receiving area is bonded to the connecting cloth. In this way, when the connecting cloth is in a flat stretched state, the light-receiving area on the diaphragm body for projecting an image will also be stretched, thereby achieving better picture display quality.

[0162] Through the configuration of the first bracket, the second bracket, and the first bracket being a metal bracket and the second bracket being a plastic bracket, compared to the existing entire bracket unit being made of a thicker metal material, the present application increases the thickness of the existing bracket unit by stacking the first bracket and the second bracket. Since the first bracket is a metal bracket, the appearance is ensured to be beautiful and strong. The second bracket is a plastic bracket that shares a certain thickness to reduce the weight, making the weight of the entire bracket unit lighter, thereby reducing the weight of the entire projection device, and ultimately reducing the cost.

[0163] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0164] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A projection device, characterized in that: include: A laser host, wherein the laser host is used to project an image beam; A housing, the housing comprising a body, the body having a receiving cavity and a light outlet, the receiving cavity being used to receive the laser host, and the light outlet being located at the top of the body; A bracket unit, wherein the bracket unit is provided with a notch, and the light outlet is located in the notch. The bracket unit includes a first bracket and a second bracket, wherein the first bracket is arranged on the second bracket, and the second bracket is arranged on the top wall of the main body, and the first bracket is located on a side of the second bracket away from the main body, wherein the first bracket is a metal bracket and the second bracket is a plastic bracket.

2. The projection device according to claim 1, characterized in that: At least one of the first bracket and the second bracket is a plate-shaped member, and the first bracket and the second bracket are an integral structure.

3. The projection device according to claim 2, characterized in that: Along the thickness direction of the bracket unit, the board thickness of the first bracket is less than or equal to the board thickness of the second bracket.

4. The projection device according to any one of claims 1 to 3, characterized in that: It also includes a conductive unit, the conductive unit includes an elastic block and a conductive member, the first end of the elastic block is connected to the second bracket, and the second end of the elastic block is located above the metal frame in the body; The first end of the conductive member is connected to the first bracket, and the second end of the conductive member is connected to the second end of the elastic block. When the first end of the elastic block is compressed, the second end of the elastic block drives the second end of the conductive member to be pressed against the metal frame in the body.

5. The projection device according to claim 4, characterized in that: The conductive member is a conductive cloth; The main body is provided with a first mounting opening and a second mounting opening, the first mounting opening is used for mounting the elastic block, and the second mounting opening is used for mounting the conductive member; The second bracket is also provided with a plurality of third fasteners, and the plurality of third fasteners are respectively fastened to the peripheral side edges of the first installation opening and the second installation opening.

6. The projection device according to any one of claims 1 to 3, characterized in that: A first positioning column and a second positioning column are provided on the second bracket, and the first positioning column and the second positioning column are arranged at intervals along the extension direction of the second bracket; The main body is provided with a limiting hole and an adjusting hole, the first positioning column cooperates with the limiting hole so that the first positioning column extends into the limiting hole, the second positioning column cooperates with the adjusting hole, the adjusting hole extends along the width direction of the main body so that the second positioning column extends into the adjusting hole, and can be located at different positions of the adjusting hole.

7. The projection device according to claim 6, characterized in that: The second bracket is further provided with a first buckle and a second buckle, wherein the first buckle is located at an edge of the second bracket, and the second buckle is located in the middle of the second bracket, and the buckle portion of the first buckle and the buckle portion of the second buckle extend in opposite directions; The main body is provided with a first groove and a second groove, the first groove and the second groove are respectively located on different sides of the light outlet in the circumferential direction, the buckling portion of the first buckle is buckled with the groove wall of the first groove, and the buckling portion of the second buckle is buckled with the groove wall of the second groove.

8. The projection device according to any one of claims 1 to 3, characterized in that: It also includes a connecting piece, a first connecting hole is formed on the main body, and a second connecting hole is formed on the second bracket. The connecting piece passes through the first connecting hole and the second connecting hole in sequence to connect the main body and the second bracket.

9. A projection device, characterized in that: include: A laser host, wherein the laser host is used to project an image beam; A housing, wherein the housing comprises a body, and the laser host is arranged in the body; A bracket unit is arranged on the main body, and at least a part of the structure of the bracket unit is a plastic part.

10. A projection system, characterized in that: It comprises a projection screen and the projection device according to any one of claims 1 to 9, wherein the projection device is used to project a projection picture onto the projection screen.

Images