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 the containing cavity is used for containing the laser host; the lamp panel unit comprises a lamp effect board and a halation part, the lamp effect board and the halation part are both arranged on the body, the halation part is located on the light emitting side of the lamp effect board so as to be used for diffusing light emitted by the lamp effect board, the lamp effect board is covered with the halation part, and the halation part extends towards the side edge of the body. According to the utility model, the effect that the light is gradually transited from the light effect board to the two sides is realized, and the defect that the light is dazzling in a dark environment is avoided at the same time.

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. With the expansion of the laser projection product market, the competition in laser projection products is becoming more and more fierce, and higher requirements are also placed on the user experience of the products.

[0003] At present, the lighting effect panels and halo machines in the projection devices are mostly on both sides of the laser host, and their effects are mostly in the form of strips or circular sheets.

[0004] However, in order to ensure the lighting effect under normal conditions, the existing halo machine has a relatively glaring lighting effect, which results in a poor user experience. Utility Model Content

[0005] The main purpose of the utility model is to provide a projection device and a projection system, which realizes the effect of gradual transition of light from a lighting effect board to both sides, while avoiding the disadvantage of glare of light in a dark environment.

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

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

[0008] The housing comprises a main body, the main body has a receiving cavity, and the receiving cavity is used to receive the laser host;

[0009] The light board unit includes a light effect board and a halo piece, both of which are arranged on the main body. The halo piece is located on the light emitting side of the light effect board to diffuse the light emitted by the light effect board. The halo piece covers the light effect board and extends toward the side edge of the main body.

[0010] The beneficial effect of the utility model is that through the arrangement of the light board unit, the halo piece covers one side of the light emitting surface of the light effect board, so as to refract the light emitted by the light effect board. Furthermore, since the halo piece covers the light effect board, it means that the area of ​​the halo piece is larger than the area of ​​the light effect board, so that the refracted light is gradually weakened, thereby achieving the effect of gradually weakening the light effect, and achieving the effect of gradual transition of light from the light effect board to both sides, while avoiding the disadvantage of glare in dark environments.

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

[0012] In some optional embodiments, along a first direction, the projection of the halo element covers the lighting effect board, and the first direction is the width direction of the main body.

[0013] In some optional embodiments, along the second direction, the extension length of the halo member is greater than the extension length of the lighting effect plate, wherein the second direction is the length direction of the main body.

[0014] In some optional embodiments, the halo member has a buckle portion and a first limiting hole, the buckle portion is located at the edge of the halo member, the body has a slot and a first positioning column, the buckle portion is inserted into the slot, and the first positioning column extends into the first limiting hole to fix the halo member;

[0015] It also includes a first connecting piece, a first connecting hole is opened on the halo piece, a connecting column is provided on the body, the connecting column has a second connecting hole, and the first connecting piece passes through the first connecting hole and the second connecting hole in sequence to connect the halo piece and the body.

[0016] In some optional embodiments, the shell further includes a mounting frame, which is mounted on the main body, and has a mounting opening, the mounting opening faces the lighting effect board, and the halo element is located in the mounting opening.

[0017] In some optional embodiments, the light panel unit further includes a mesh cover member, which is disposed on the mounting frame and covers a side of the halo member away from the light effect panel.

[0018] In some optional embodiments, the mesh cover has a second limiting hole, the mounting frame is provided with a second positioning column, and the second positioning column extends into the second limiting hole;

[0019] The mesh cover is also provided with a convex block, which is located on the edge of the mesh cover and protrudes out of the mesh cover. A groove is provided on the mounting frame, and the convex block is inserted into the groove to fix the mesh cover.

[0020] It also includes a second connecting piece, a third connecting hole is arranged on the mesh cover piece, a fourth connecting hole is arranged on the mounting frame, and the second connecting piece passes through the third connecting hole and the fourth connecting hole in sequence to connect the mesh cover piece and the mounting frame.

[0021] In some optional embodiments, the housing further comprises a front shell, the mounting frame is located between the front shell and the body, a third positioning column is provided on the front shell, a third limiting hole is provided on the body, and the third positioning column extends into the third limiting hole;

[0022] It also includes a third connecting member, a fifth connecting hole is provided on the main body, a sixth connecting hole is provided on the front shell, and the third connecting member passes through the fifth connecting hole and the sixth connecting hole in sequence to connect the front shell and the main body.

[0023] In a second aspect, the utility model further provides a projection device, comprising:

[0024] Laser host, which is used to project image beams;

[0025] A housing, in which the laser host is arranged;

[0026] The light board unit includes a light effect board and a halo piece. Both the light effect board and the halo piece are arranged on the shell. The halo piece diffuses the light emitted by the light effect board.

[0027] 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.

[0028] 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 main body, wherein the main body has a accommodating cavity, wherein the accommodating cavity is used to accommodate the laser host; and a light board unit, wherein the light board unit comprises a light effect board and a halo piece, wherein the light effect board and the halo piece are both arranged on the main body, wherein the halo piece is located on the light emitting side of the light effect board to diffuse the light emitted by the light effect board, wherein the halo piece covers the light effect board, and extends toward the side edge of the main body.

[0029] Through the arrangement of the light board unit, the halo piece covers one side of the light emitting surface of the lighting effect board, so as to refract the light emitted by the lighting effect board. Furthermore, since the halo piece covers the lighting effect board, it means that the area of ​​the halo piece is larger than the area of ​​the lighting effect board, so that the refracted light gradually weakens, thereby achieving the effect of gradually weakening the lighting effect, and realizing the effect of gradual transition of light from the lighting effect board to both sides, while avoiding the disadvantage of glare in dark environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 An exploded view of a projection device provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of a projection device provided in an embodiment of the present application;

[0033] Figure 3 A partial exploded view of a projection device provided in an embodiment of the present application at a first viewing angle;

[0034] Figure 4 for Figure 3 A partial enlarged view of point I in the middle;

[0035] Figure 5 A schematic diagram of a partial structure of a second viewing angle of a projection device provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the assembly of a mounting frame and a mesh cover member in a projection device provided in an embodiment of the present application at a first viewing angle;

[0037] Figure 7 A schematic diagram of the assembly of the mounting frame and the mesh cover in the projection device provided in an embodiment of the present application at a second viewing angle;

[0038] Figure 8 A schematic diagram of the assembly of the mounting frame and the mesh cover member in the projection device provided in an embodiment of the present application at a third viewing angle;

[0039] Fig. 9 A schematic diagram of the assembly of the mounting frame and the mesh cover member in the projection device provided in an embodiment of the present application at a fourth viewing angle;

[0040] Fig.10 for Fig. 9 A partial enlarged view of position II in the middle;

[0041] Fig.11 A schematic structural diagram of a first viewing angle of a front housing in a projection device provided in an embodiment of the present application;

[0042] Fig.12 A schematic diagram of the structure of a second viewing angle of a front shell in a projection device provided in an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 100- projection device;

[0045] 110-housing;

[0046] 111-Ontology;

[0047] 1111-first positioning column;

[0048] 1112-card slot;

[0049] 1113-second connecting hole;

[0050] 1114-third limiting hole;

[0051] 1115-fifth connecting hole;

[0052] 112-mounting frame;

[0053] 1121-groove;

[0054] 1122-second positioning column;

[0055] 1123-installation port;

[0056] 1124- fourth connecting hole;

[0057] 113- front shell;

[0058] 1131-third positioning column;

[0059] 1132-sixth connecting hole;

[0060] 120-light board unit;

[0061] 121-lighting effect board;

[0062] 122-halo piece;

[0063] 1221-first limiting hole;

[0064] 1222- buckle portion;

[0065] 1223-first connecting hole;

[0066] 123-net cover;

[0067] 1231-bump;

[0068] 1232-second limiting hole;

[0069] 1233-third connecting hole;

[0070] 130- first connecting member;

[0071] 140-second connecting piece. 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 lighting effect panels and halo machines in the projection device are mostly on both sides of the laser host, and the effects are mostly strip or circular sheets. However, in order to ensure the effect of the lighting effect in a normal environment, the existing halo machine has a relatively dazzling lighting effect, which does not provide a good user experience.

[0077] In order to overcome the defects in the prior art, the projection device and projection system provided by the utility model, through the setting of the light board unit, the halo piece covers one side of the light-emitting surface of the light effect board, so as to refract the light emitted by the light effect board. Furthermore, since the halo piece covers the light effect board, it means that the area of ​​the halo piece is larger than the area of ​​the light effect board, so that the refracted light is gradually weakened, thereby achieving the effect of gradually weakening the light effect, and realizing the effect of gradual transition of light from the light effect board to both sides, while avoiding the disadvantage of glare in dark environments.

[0078] The content of the utility model will be described in detail below with reference to 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 A partial exploded view of the projection device provided in an embodiment of the present application from a first viewing angle, 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, which 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, and the body 111 has a receiving cavity, and the receiving cavity is used to receive the laser host;

[0084] 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.

[0085] The light board unit 120 includes a light effect board 121 and a halo piece 122. Both the light effect board 121 and the halo piece 122 are arranged on the main body 111. The halo piece 122 is located on the light emitting side of the light effect board 121 to diffuse the light emitted by the light effect board 121. The halo piece 122 covers the light effect board 121, and extends toward the side edge of the main body 111.

[0086] Through the above-mentioned arrangement, that is, through the arrangement of the light board unit 120, the halo piece 122 covers one side of the light-emitting surface of the light effect board 121, so as to refract the light emitted by the light effect board 121. Furthermore, since the halo piece 122 covers the light effect board 121, it means that the area of ​​the halo piece 122 is larger than the area of ​​the light effect board 121, so that the refracted light is gradually weakened, thereby achieving the effect of gradually weakening the light effect, and achieving the effect of gradually transitioning the light from the light effect board 121 to both sides, while avoiding the disadvantage of glare in dark environments.

[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-mentioned light source can be a three-color light source, which includes a red laser, a blue laser, a green laser and a plurality of optical lenses, and the plurality of optical lenses can homogenize and converge the laser beam. Alternatively, the light source can also be a non-three-color laser light source, that is, the light source can be a monochromatic light source or a two-color light source. The monochromatic light source can use a blue laser to excite the phosphor to produce the other two colors of primary light (such as red fluorescence and green fluorescence), or produce more than two colors of fluorescence. The two-color light source can use a blue laser component and a red laser, and the blue laser component excites the phosphor to produce green fluorescence (or other color fluorescence).

[0091] 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).

[0092] 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.

[0093] In some embodiments, the overall shape of the projection device 100 may be approximately a rectangular parallelepiped.

[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 halo member 122 is mounted on the body 111 and covers the light outlet of the light effect board 121. The light emitted by the lamp beads on the light effect board 121 is refracted by the halo member 122 and gradually weakened, thereby achieving a gradually weakening light effect.

[0099] In some embodiments, the material of the halo element 122 is selected from PC transparent material plus titanium dioxide to achieve a halo effect.

[0100] In some embodiments, there is a gap between the halo element 122 and the light-emitting surface of the light effect board 121. Therefore, the light emitted by the light effect board 121 can be mixed with air first, and then mixed with the halo element 122, further improving the light effect displayed at the light outlet.

[0101] In some embodiments, the lighting effect plate 121 and the main body 111 , and the halo piece 122 and the main body 111 may be connected by a detachable connection or a fixed connection.

[0102] For example, bolts, buckles or hanging connections are used. Specifically, the embodiments of the present application are not too restrictive here.

[0103] like Figures 1 to 4 As shown, in some optional embodiments, along a first direction, the projection of the halo element 122 covers the lighting effect plate 121 , and the first direction is the width direction of the main body 111 .

[0104] It should be noted that along the width direction of the main body 111, the projection of the lighting effect board 121 is located on the halo piece 122, and the halo piece 122 covers the lighting effect board 121, so that the halo piece 122 completely covers the lighting effect board 121 to refract the light emitted by the lighting effect board 121.

[0105] For ease of explanation, Figure 1 As shown, A represents the first direction.

[0106] In some optional embodiments, along the second direction, the extension length of the halo member 122 is greater than the extension length of the lighting effect plate 121 , wherein the second direction is the length direction of the main body 111 .

[0107] It should be noted that along the length direction of the main body 111, the extension length of the halo piece 122 is greater than the extension length of the lighting effect plate 121, which means that the coverage area of ​​the halo piece 122 is greater than that of the lighting effect plate 121, so that the refracted light gradually weakens, thereby achieving the effect of gradually weakening the lighting effect.

[0108] For ease of explanation, Figure 1 As shown, B represents the second direction.

[0109] Continue to refer Figures 1 to 4 In some optional embodiments, the halo member 122 has a buckle portion 1222 and a first limiting hole 1221, the buckle portion 1222 is located at the edge of the halo member 122, the body 111 has a slot 1112 and a first positioning column 1111, the buckle portion 1222 is inserted into the slot 1112, and the first positioning column 1111 extends into the first limiting hole 1221 to fix the halo member 122;

[0110] It also includes a first connecting member 130, a first connecting hole 1223 is opened on the halo member 122, a connecting column is provided on the main body 111, and the connecting column has a second connecting hole 1113. The first connecting member 130 passes through the first connecting hole 1223 and the second connecting hole 1113 in sequence to connect the halo member 122 and the main body 111.

[0111] It should be noted that the buckle portion 1222 is located at the edge of the halo member 122 and protrudes from the edge of the halo member 122. The buckle portion 1222 cooperates with the slot 1112 so that the buckle portion 1222 is inserted into the slot 1112. The first limiting hole 1221 cooperates with the first positioning column 1111 so that the first positioning column 1111 extends into the first limiting hole 1221. The pre-installation of the halo member 122 is satisfied by the buckle portion 1222 and the slot 1112, the first limiting hole 1221 and the first positioning column 1111. Then, the halo member 122 is limited in the second direction to prevent it from shaking.

[0112] In order to further fix and install the halo member 122 , specifically, the halo member 122 and the body 111 are connected through the first connecting member 130 and the first connecting hole 1223 and the second connecting hole 1113 .

[0113] It should be noted that the combination of pre-installation and screw installation makes the installation of the halo member 122 more stable and has higher installation strength.

[0114] It should be noted that in the embodiment of the present application, considering the cost of the first connecting member 130, the first connecting member 130 can be a threaded fastener. Correspondingly, a first connecting hole 1223 is opened on the halo member 122, and the first connecting hole 1223 can be a threaded hole. The first connecting member 130 can pass through the first connecting hole 1223, and can be tightened or loosened to adjust the fixed and disassembled states.

[0115] In addition, correspondingly, a second connecting hole 1113 is opened on the main body 111, and the second connecting hole 1113 can also be a threaded hole. The first connecting member 130 can pass through the second connecting hole 1113, and the fixing and disassembly states can be adjusted by tightening or loosening.

[0116] Specifically, the first connecting member 130 passes through the first connecting hole 1223 and the second connecting hole 1113 in sequence and is tightened, so that the halo member 122 can be fixed to the main body 111. Of course, when the halo member 122 needs to be removed, it is only necessary to loosen the connecting member, and then take the first connecting member 130 out of the second connecting hole 1113 and the first connecting hole 1223 in sequence.

[0117] It should be noted that such a configuration can enhance the installation strength of the halo element 122 and avoid shaking.

[0118] It should be noted that by arranging the halo piece 122 and the snap portion 1222 to be integrally formed, not only can the connection strength between the halo piece 122 and the snap portion 1222 be improved, but also a seamless connection between the halo piece 122 and the snap portion 1222 can be achieved, thereby reducing the risk of cracking at the connection position between the halo piece 122 and the snap portion 1222.

[0119] Continue to refer Figures 1 to 4 In some optional embodiments, the shell 110 also includes a mounting bracket 112, which is mounted on the main body 111. The mounting bracket 112 has a mounting opening 1123, the mounting opening 1123 faces the lighting effect board 121, and the halo element 122 is located in the mounting opening 1123.

[0120] It should be noted that the halo piece 122 is embedded in the installation opening 1123, and the shape of the halo piece 122 matches the shape of the installation opening 1123. This arrangement saves installation space. At the same time, the installation opening 1123 can limit the halo piece 122 and has good reliability.

[0121] In some embodiments, the lighting effect board 121 is disposed on the body 111. The light emitting surface of the lighting effect board 121 faces the side of the mounting frame 112 away from the body 111.

[0122] In some embodiments, the mounting bracket 112 and the body 111 may be connected in a detachable connection manner or a fixed connection manner.

[0123] For example, bolts, buckles or hanging connections are used. Specifically, the embodiments of the present application are not too restrictive here.

[0124] Continue to refer Figures 1 to 4 In some optional embodiments, the light panel unit 120 further includes a mesh cover 123 , which is disposed on the mounting frame 112 and covers a side of the halo member 122 away from the light effect panel 121 .

[0125] It should be noted that the mesh cover 123 is connected to a side of the mounting frame 112 away from the lighting effect board 121 , so as to improve the design and aesthetics of the entire projection device 100 .

[0126] In some embodiments, a mesh is attached to the back of the mesh cover 123 to block light and prevent glare.

[0127] Figure 5 A schematic diagram of a partial structure of a second viewing angle of a projection device provided in an embodiment of the present application, Figure 6 This is a schematic diagram of the assembly of the mounting frame and the mesh cover in the projection device provided in an embodiment of the present application at a first viewing angle. Figure 7 The schematic diagram of the assembly of the mounting frame and the mesh cover in the projection device provided in the embodiment of the present application at the second viewing angle is shown. Figure 8 This is a schematic diagram of the assembly of the mounting frame and the mesh cover in the projection device provided in the embodiment of the present application at a third viewing angle. Fig. 9 The fourth perspective assembly diagram of the mounting frame and the mesh cover member in the projection device provided in the embodiment of the present application is shown in FIG. Fig.10 for Fig. 9 A partial enlarged view of point II in the middle.

[0128] like Figures 1 to 10 As shown, in some optional embodiments, the mesh cover 123 has a second limiting hole 1232, and the mounting frame 112 is provided with a second positioning column 1122, and the second positioning column 1122 extends into the second limiting hole 1232;

[0129] The mesh cover 123 is further provided with a protrusion 1231, which is located on the edge of the mesh cover 123 and protrudes out of the mesh cover 123. The mounting frame 112 is provided with a groove 1121, and the protrusion 1231 is inserted into the groove 1121 to fix the mesh cover 123.

[0130] The second connecting member 140 is also included. The mesh member 123 is provided with a third connecting hole 1233 , and the mounting frame 112 is provided with a fourth connecting hole 1124 . The second connecting member 140 passes through the third connecting hole 1233 and the fourth connecting hole 1124 in sequence to connect the mesh member 123 and the mounting frame 112 .

[0131] It should be noted that the protrusion 1231 is located on the edge of the mesh cover 123, and the protrusion 1231 and the groove 1121 match each other so that the protrusion 1231 is inserted into the groove 1121; the second positioning column 1122 and the second limiting hole 1232 cooperate with each other so that the second positioning column 1122 extends into the second limiting hole 1232, and the protrusion 1231 and the groove 1121, the second limiting hole 1232 and the second positioning column 1122 meet the pre-installation of the mesh cover 123. Then the mesh cover 123 is limited in the second direction to prevent it from shaking.

[0132] In order to further fix the mesh cover 123 , specifically, the mesh cover 123 and the mounting frame 112 are connected through the second connecting member 140 and the third connecting hole 1233 and the fourth connecting hole 1124 .

[0133] In addition, regarding the structures and effects of the second connecting member 140 , the third connecting hole 1233 , and the fourth connecting hole 1124 , reference may be made to the above-mentioned related contents, and no further elaboration will be given here.

[0134] It should be noted that by configuring the mounting frame 112 and the second positioning column 1122 to be integrally formed, not only can the connection strength between the mounting frame 112 and the second positioning column 1122 be improved, but also a seamless connection between the mounting frame 112 and the second positioning column 1122 can be achieved, thereby reducing the risk of cracking at the connection position between the mounting frame 112 and the second positioning column 1122.

[0135] In addition, correspondingly, the mesh cover 123 and the protrusion 1231 are configured to be integrally formed.

[0136] Fig.11 This is a schematic structural diagram of a first viewing angle of a front housing in a projection device provided in an embodiment of the present application. Fig.12 A schematic diagram of the structure of a second viewing angle of a front shell in a projection device provided in an embodiment of the present application.

[0137] like Figures 1 to 12 As shown, in some optional embodiments, the housing 110 further includes a front housing 113, the mounting frame 112 is located between the front housing 113 and the body 111, a third positioning column 1131 is provided on the front housing 113, a third limiting hole 1114 is provided on the body 111, and the third positioning column 1131 extends into the third limiting hole 1114;

[0138] The third connecting member is also included. A fifth connecting hole 1115 is formed on the body 111 , and a sixth connecting hole 1132 is formed on the front shell 113 . The third connecting member passes through the fifth connecting hole 1115 and the sixth connecting hole 1132 in sequence to connect the front shell 113 and the body 111 .

[0139] It should be noted that the front shell 113 serves to shield the fixing points of the 3 / 5 mesh cover 123 , thereby achieving a screw-free appearance and improving the design and aesthetics of the entire projection device 100 .

[0140] In some embodiments, the front shell 113 may be a thin plate structure. Based on this, and exemplarily, the front shell 113 may be an integrally formed part. For example, the front shell 113 may be processed by an injection molding process. In this way, the processing efficiency is high and mass production is convenient.

[0141] It should be noted that the third positioning column 1131 cooperates with the third limiting hole 1114 so that the third positioning column 1131 extends into the third limiting hole 1114, thereby limiting the front shell 113 in the second direction to prevent it from shaking.

[0142] In addition, regarding the structure and effect of the third connecting member, the fifth connecting hole 1115 and the sixth connecting hole 1132, reference may be made to the above-mentioned relevant contents, and no further elaboration will be given here.

[0143] It should be noted that by setting the front shell 113 and the third positioning column 1131 as an integral molding, not only can the connection strength between the front shell 113 and the third positioning column 1131 be improved, but also the seamless connection between the front shell 113 and the third positioning column 1131 can be achieved, thereby reducing the risk of cracking at the connection position between the front shell 113 and the third positioning column 1131.

[0144] In some embodiments, a rubber column is disposed on the body 111 , and a third limiting hole 1114 is formed on the rubber column.

[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, and the main body has a accommodating cavity, and the accommodating cavity is used to accommodate the laser host; a light board unit, which includes a lighting effect board and a halo piece, and the lighting effect board and the halo piece are both arranged on the main body, and the halo piece is located on the light emitting side of the lighting effect board to diffuse the light emitted by the lighting effect board, and the halo piece covers the lighting effect board, and extends toward the side edge of the main body.

[0146] Through the setting of the light board unit, the halo piece covers one side of the light-emitting surface of the light effect board, so as to refract the light emitted by the light effect board. Furthermore, since the halo piece covers the light effect board, it means that the area of ​​the halo piece is larger than the area of ​​the light effect board, so that the refracted light is gradually weakened, thereby achieving the effect of gradually weakening the light effect, and realizing the effect of gradual transition of light from the light effect board 121 to both sides, while avoiding the disadvantage of glare in dark environments.

[0147] In addition, if Figures 1 to 12 As shown, the embodiment of the present application further provides a projection device 100, comprising:

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

[0149] A housing 110, wherein the laser host is disposed in the housing 110;

[0150] The light board unit 120 includes a light effect board 121 and a halo piece 122 . The light effect board 121 and the halo piece 122 are both arranged on the shell 110 . The halo piece 122 diffuses the light emitted by the light effect board 121 .

[0151] The projection device provided in the embodiment of the present application, through the arrangement of the light board unit, the halo piece covers one side of the light emitting surface of the light effect board, so as to refract the light emitted by the light effect board. Furthermore, since the halo piece covers the light effect board, it means that the area of ​​the halo piece is larger than the area of ​​the light effect board, so that the refracted light is gradually weakened, thereby achieving the effect of gradually weakening the light effect, and realizing the effect of gradual transition of light from the light effect board to both sides, while avoiding the disadvantage of glare in dark environments.

[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 arrangement of the light board unit, the halo piece covers one side of the light emitting surface of the lighting effect board, so as to refract the light emitted by the lighting effect board. Furthermore, since the halo piece covers the lighting effect board, it means that the area of ​​the halo piece is larger than the area of ​​the lighting effect board, so that the refracted light gradually weakens, thereby achieving the effect of gradually weakening the lighting effect, and realizing the effect of gradual transition of light from the lighting effect board to both sides, while avoiding the disadvantage of glare in dark environments.

[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 main body, the main body having a receiving cavity, the receiving cavity being used to receive the laser host; A light board unit, the light board unit includes a lighting effect board and a halo piece, the lighting effect board and the halo piece are both arranged on the main body, the halo piece is located on the light emitting side of the lighting effect board to diffuse the light emitted by the lighting effect board, the halo piece covers the lighting effect board, and the halo piece extends toward the side edge of the main body.

2. The projection device according to claim 1, characterized in that: Along a first direction, the projection of the halo element covers the lighting effect board, and the first direction is the width direction of the main body.

3. The projection device according to claim 2, characterized in that: Along a second direction, an extension length of the halo element is greater than an extension length of the lighting effect plate, wherein the second direction is a length direction of the main body.

4. The projection device according to any one of claims 1 to 3, characterized in that: The halo piece has a buckle portion and a first limiting hole, the buckle portion is located at the edge of the halo piece, the body has a slot and a first positioning column, the buckle portion is inserted into the slot, and the first positioning column extends into the first limiting hole to fix the halo piece; It also includes a first connecting piece, a first connecting hole is opened on the halo piece, a connecting column is provided on the main body, and the connecting column has a second connecting hole. The first connecting piece passes through the first connecting hole and the second connecting hole in sequence to connect the halo piece and the main body.

5. The projection device according to any one of claims 1 to 3, characterized in that: The shell also includes a mounting frame, which is mounted on the main body. The mounting frame has a mounting opening, the mounting opening faces the lighting effect board, and the halo piece is located in the mounting opening.

6. The projection device according to claim 5, characterized in that: The light panel unit further comprises a mesh cover member, which is arranged on the mounting frame and covers a side of the halo member away from the light effect panel.

7. The projection device according to claim 6, characterized in that: The mesh cover has a second limiting hole, the mounting frame is provided with a second positioning column, and the second positioning column extends into the second limiting hole; The mesh cover is also provided with a convex block, which is located on the edge of the mesh cover and protrudes out of the mesh cover. A groove is provided on the mounting frame, and the convex block is inserted into the groove to fix the mesh cover. It also includes a second connecting member, a third connecting hole is provided on the mesh cover member, a fourth connecting hole is provided on the mounting frame, and the second connecting member passes through the third connecting hole and the fourth connecting hole in sequence to connect the mesh cover member and the mounting frame.

8. The projection device according to claim 5, characterized in that: The housing further comprises a front shell, the mounting frame is located between the front shell and the body, a third positioning column is provided on the front shell, a third limiting hole is provided on the body, and the third positioning column extends into the third limiting hole; It also includes a third connecting member, a fifth connecting hole is provided on the main body, a sixth connecting hole is provided on the front shell, and the third connecting member passes through the fifth connecting hole and the sixth connecting hole in sequence to connect the front shell and the main body.

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 laser host is arranged in the housing; A light board unit, the light board unit includes a light effect board and a halo piece, the light effect board and the halo piece are both arranged on the shell, and the halo piece diffuses the light emitted by the light effect board.

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