Light source system and three-dimensional forming equipment

Abstract

The utility model provides a light source system and three-dimensional forming equipment. The light source system comprises at least two light-emitting assemblies, first light-transmitting pieces and shading pieces, the first light-transmitting pieces correspond to the light-emitting assemblies in a one-to-one mode and are arranged on emergent light paths of the light-emitting assemblies, and the shading pieces are located between the light-emitting assemblies and the first light-transmitting pieces and are arranged between every two adjacent first light-transmitting pieces. At least part of light emitted by the corresponding light-emitting assembly is limited in the space corresponding to the first light-transmitting piece. Therefore, the light source system can meet the requirements of different printing ranges, the light-emitting assembly can have a good heat dissipation effect, the service life is prolonged, light received by the display screen has high uniformity, and the printing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a light source system and three-dimensional forming equipment. Background Art

[0002] 3D Printer (3DP) is a technology of cumulative manufacturing and a device of rapid prototyping technology. It is based on digital model files and uses special wax materials, powdered metal or plastic, nylon and other adhesive materials to print multiple layers of adhesive materials in sequence to create three-dimensional objects.

[0003] Among them, the photocuring three-dimensional molding equipment adopts photocuring printing technology. It uses photosensitive resin as the printing material, and focuses light of specific wavelength and intensity onto the surface of the photocuring material to solidify it, completing the solidification of one layer, and then moves the height of a layer in the vertical direction, and then solidifies another layer, and stacks layers in sequence to form a three-dimensional entity.

[0004] Existing photocuring equipment, such as the prior art with publication number CN115556355A, discloses a light source system, which includes a light source, a free-form surface lens, a Fresnel lens, and a display screen. If such a light source system is to meet the printing requirements of a larger format, it is necessary to increase the light emitting area of ​​the light source to increase the energy of the light passing through the preset contour of the display screen. However, under the same size lens, the larger the light emitting area of ​​the light source, the lower the optical efficiency, and the lens cannot be infinitely enlarged, so the printing range is limited. Utility Model Content

[0005] In view of this, the utility model provides a light source system and a three-dimensional forming device, which can meet the needs of different printing ranges, and can make the light-emitting components have good heat dissipation effect, improve service life, and make the light received by the display screen have higher uniformity, thereby improving printing quality.

[0006] An embodiment of the first aspect of the utility model provides a light source system for a three-dimensional forming device, the light source system comprising: a light-emitting component, a first light-transmitting member and a light-shielding member, wherein the number of the light-emitting components is at least two, the first light-transmitting member corresponds to the light-emitting component one-to-one and is arranged on the output light path of the light-emitting component, the light-shielding member is located between the light-emitting component and the first light-transmitting member, and is arranged between two adjacent first light-transmitting members to confine at least part of the light emitted by the corresponding light-emitting component to the space corresponding to the first light-transmitting member.

[0007] Furthermore, the shading member is detachably connected to the adjacent first light-transmitting member; or the shading member is spaced apart from the adjacent first light-transmitting member, and the distance is less than or equal to 3 mm; and the shading member is made of a black light-absorbing material.

[0008] Furthermore, the number of light-emitting components is greater than or equal to three, the multiple light-emitting components are arranged in a polygonal shape, and the corresponding multiple shading members are detachably connected; or the multiple light-emitting components are arranged in a straight line, and the corresponding multiple shading members are arranged at intervals.

[0009] Furthermore, the light-emitting component includes a light-emitting body and a second light-transmitting member, the light-emitting body and the corresponding first light-transmitting member are respectively located on opposite sides of the second light-transmitting member, and the light emitted by the light-emitting body is successively refracted by the second light-transmitting member and the first light-transmitting member and then projected; wherein, the light-emitting areas of at least two light-emitting bodies are equal or unequal; the light-transmitting area of ​​the second light-transmitting member is proportional to the light-emitting area of ​​the light-emitting body; and the light-transmitting area of ​​the first light-transmitting member is proportional to the light-emitting area of ​​the light-emitting body.

[0010] Furthermore, at least two light-emitting bodies are identical to each other, at least two second light-transmitting members are identical to each other, and at least two first light-transmitting members are identical to each other; the light-emitting body of the same light-emitting component is opposite to the bottom center of the second light-transmitting member, and the light emitted by the light-emitting body includes a central light, which propagates along the first optical axis of the corresponding second light-transmitting member and the second optical axis of the corresponding first light-transmitting member in sequence; wherein, the distance between the top of the light-emitting body and the bottom of the corresponding second light-transmitting member is L1, the distance between the top of the light-emitting body and the bottom of the corresponding first light-transmitting member is L2, the focal length of the first light-transmitting member is F, and F satisfies: L1≤0.3F, 0.8L2≤F≤1.2L2; the distance between the top of the second light-transmitting member and the bottom of the shading member is L3, and L3≤30mm.

[0011] Furthermore, the light-emitting component also includes a mounting plate, and the light-emitting body is mounted on the mounting plate so that the mounting plate supports the light-emitting body and dissipates heat for it; the second light-transmitting member includes a supporting portion and a light-transmitting portion that together form an accommodating cavity, and the supporting portion is connected to the mounting plate and surrounds the circumference of the light-emitting body corresponding to the second light-transmitting member to cover the light-emitting body in the accommodating cavity; or the second light-transmitting member includes a planar supporting portion and a light-transmitting portion, and the supporting portion is used to be connected to the mounting plate.

[0012] Furthermore, the light-emitting body is an integrated surface light source; the diameter of the light-emitting body is greater than or equal to 1 mm and less than or equal to 15 mm; the light-emitting angle of the light-emitting body is greater than or equal to 10 degrees and less than or equal to 120 degrees; the second light-transmitting member includes a first incident surface and a first exit surface, the first incident surface is opposite to the corresponding light-emitting body, and the first exit surface is opposite to the corresponding first light-transmitting member; the first incident surface is a plane, and the first exit surface is a curved surface.

[0013] Furthermore, the first light-transmitting member is a Fresnel lens, and the first light-transmitting member includes a second incident surface and a second exit surface, the second incident surface is opposite to the corresponding first light-transmitting member, and the second exit surface is used to be opposite to the display screen of the three-dimensional forming equipment; the second incident surface is a light surface or a plane, and the second exit surface is a toothed surface.

[0014] The second aspect of the utility model provides a three-dimensional forming device, comprising the light source system of any one of the first aspects, and: a display screen, a first light-transmitting member arranged opposite to the display screen, and the display screen and the light-emitting component are respectively located on different sides of the first light-transmitting member; the light emitted by the light-emitting component is refracted by the first light-transmitting member and then projected vertically onto the display screen.

[0015] Further, the spacing distance between the first light-transmitting member and the display screen is L4, and the focal length F of the first light-transmitting member satisfies: L4<0.1F.

[0016] Furthermore, the three-dimensional forming equipment also includes: a base, a mounting port is arranged on the top of the base, the display screen is connected to the base and covers the mounting port, the light source system is located inside the base, the light-emitting component is connected to the base, and the first light-transmitting member is connected to the base.

[0017] The light source system and three-dimensional forming equipment provided by the embodiment of the utility model, the source system includes: a light-emitting component, a first light-transmitting component and a light-shielding component, wherein the number of the light-emitting components is at least two, the number of the first light-transmitting components is the same as that of the light-emitting components and they correspond one to one, and the light emitted by the light-emitting component is refracted by the corresponding first light-transmitting component and projected onto the display screen in a direction relatively perpendicular to the display screen. Thus, by using at least two light-emitting components and the same number of first light-transmitting components that correspond one to one, the needs of different printing ranges can be met, avoiding the problem of the limited printing range due to the limited manufacturing size of the first light-transmitting component, and avoiding the problem of poor heat dissipation and easy damage caused by increasing the light-emitting area of ​​a single light source to meet the needs of a larger printing format, thereby improving the service life of the light-emitting component.

[0018] At the same time, by arranging a shading member between the light-emitting component and the first light-transmitting member, the shading member is used to confine at least part of the light emitted by the corresponding light-emitting component within the space corresponding to the first light-transmitting member, thereby filtering out stray light from adjacent light-emitting components, reducing the interference of stray light generated by adjacent light-emitting components on the first light-transmitting member, and improving the uniformity of the light emitted by each light-emitting component after the light distribution is changed by the corresponding first light-transmitting member and then projected again, thereby making the light received by the display screen have a higher uniformity.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0021] Figure 1 A schematic diagram of the structure of a light emitting assembly 110 and a display screen provided in an embodiment of the utility model;

[0022] Figure 2 Shows Figure 1 Dimensional diagram of the illustrated embodiment;

[0023] Figure 3 Shows Figure 1 A schematic structural diagram of the embodiment shown in another perspective.

[0024] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0025] 100 light source system, 110 light emitting assembly, 111 light emitting body, 112 second light transmitting member, 113 mounting plate, 120 first light transmitting member, 130 light shielding member, 210 display screen. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0027] Refer to the following Figures 1 to 3 The light source system 100 and the stereoscopic molding device provided in some embodiments of the present invention are described. The stereoscopic molding device may be a light-curing 3D printer, and the light source system 100 may be applied to the stereoscopic molding device.

[0028] Specifically, the three-dimensional molding device may also include a display screen 210, and the light source system 100 is used to project collimated light onto the display screen 210 of the three-dimensional molding device. The display screen 210 allows light of a preset contour to pass through the display screen 210. The light of the preset contour passing through the display screen 210 has sufficient energy, so that the resin can be cured.

[0029] like Figure 1 and Figure 3As shown, an embodiment of the first aspect of the utility model provides a light source system 100 for a three-dimensional forming device, wherein the light source system 100 comprises: a light-emitting component 110, a first light-transmitting member 120 and a light-shielding member 130, wherein the number of the light-emitting components 110 is at least two, the first light-transmitting member 120 corresponds to the light-emitting component 110 one by one and is arranged on the output light path of the light-emitting component 110, the light-shielding member 130 is located between the light-emitting component 110 and the first light-transmitting member 120, and is arranged between two adjacent first light-transmitting members 120, so as to confine at least part of the light emitted by the light-emitting component 110 to the space corresponding to the first light-transmitting member 120.

[0030] The light source system 100 includes a light emitting component 110, which may be a single point light source, a plurality of point light sources or a surface light source, or may be a combination of a light emitter 111 and a lens. The light emitted by the light emitting component 110 propagates in the form of a light beam, and the light in the light beam includes a central light beam and peripheral light beams distributed in a cone with the central light beam as the axis. In the process of the light beam emitted by the light emitting component 110 propagating toward the first light-transmitting member 120, the light beam will diverge outward, that is, the area where the light beam can be projected gradually increases, and the light beam is refracted by the first light-transmitting member 120. The first light-transmitting member 120 refracts the light beam at different positions in the light beam to different degrees, so that the light beam is projected onto the display screen 210 in a direction that is relatively perpendicular to the display screen 210, thereby improving the uniformity and accuracy of curing.

[0031] The first light-transmitting element 120 may be a Fresnel lens, or other light-transmitting structures that meet the requirements.

[0032] In this embodiment, the number of the light emitting components 110 is at least two, the number of the first light-transmitting members 120 is the same as that of the light emitting components 110 and they correspond one to one, and the light emitted by the light emitting components 110 is refracted by the corresponding first light-transmitting members 120 and projected onto the display screen 210 in a direction relatively perpendicular to the display screen 210. Thus, by using at least two light emitting components 110 and the same number of first light-transmitting members 120 that correspond one to one, the requirements of different printing ranges can be met, and the problem of the limited printing range due to the limited manufacturing size of the first light-transmitting members 120 is avoided, and the use range of the light source system 100 is expanded to meet the requirements of different printing formats. In addition, the light source system 100 includes at least two light emitting components 110, which avoids the problem of poor heat dissipation and easy damage caused by increasing the light-emitting area of ​​a single light source to meet the requirements of a larger printing format, thereby making the light emitting component 110 have a good heat dissipation effect, improving the service life of the light emitting component 110, and thus improving the reliability of the light source system 100.

[0033] At the same time, in this embodiment, by setting a shading member 130 between the light-emitting component 110 and the first light-transmitting member 120, the shading member 130 is used to confine at least part of the light emitted by the corresponding light-emitting component 110 within the space of the corresponding first light-transmitting member 120, so that the light emitted by the light-emitting component 110 is projected after the light distribution is changed by the corresponding first light-transmitting member 120, thereby reducing or even avoiding the situation where the light emitted by the current light-emitting component 110 is projected onto the first light-transmitting member 120 corresponding to the light-emitting component 110 adjacent to the light-emitting component 110. That is, the setting of the shading member 130 can filter out the stray light of the adjacent light-emitting component 110, reduce the interference of the stray light generated by the adjacent light-emitting component 110 on the first light-transmitting member 120, and improve the uniformity of the light emitted by each light-emitting component 110 and re-projected after the light distribution is changed by the corresponding first light-transmitting member 120, thereby making the light received by the display screen 210 have a higher uniformity, thereby improving the printing effect.

[0034] Furthermore, the shading member 130 is made of a black light-absorbing material, wherein the light-absorbing material enables the shading member 130 to have the characteristic of absorbing light, thereby being able to absorb excess light, while the black color does not have a reflective property and can block the reflection of stray light. Therefore, the shading member 130 can better isolate the light emitted by two adjacent light-emitting components 110, filter out the stray light interference of the adjacent light-emitting components 110, and improve the uniformity of the light received by the display screen 210.

[0035] Specifically, the number of the light emitting components 110 of the light source system 100 may be two, three, four or other numbers, and the light emitting components 110 may be reasonably selected according to the size of the printing format, the light emitting area of ​​each light emitting component 110, and the light transmission area of ​​each first lens, so as to assemble a suitable light emitting system using different light emitting components 110. It is understandable that the light emitting areas of each light emitting component 110 may be the same or different, the light transmission area of ​​the first light transmission member 120 is proportional to the light emitting area of ​​the light emitting component 110, and the light transmission areas of the first light transmission member 120 corresponding to the light emitting components 110 with the same light emitting area may be the same.

[0036] In some possible embodiments provided by the present invention, the light shielding member 130 is detachably connected to the adjacent first light-transmitting member 120. Thus, the adjacent first light-transmitting member 120 and the light shielding member 130 can be quickly and conveniently disassembled and assembled, so that according to actual printing requirements, a suitable light-emitting assembly 110 can be selected, and the first light-transmitting member 120 corresponding to each light-emitting assembly 110 is installed on the first light-transmitting member 120, and then each light-emitting assembly 110 is arranged relative to the first light-transmitting member 120, so that the light source system 100 can be assembled, which is simple to operate and easy to use, and can improve the reuse rate of each light-emitting assembly 110 and expand the scope of use.

[0037] Specifically, the first light-transmitting member 120 and the light-shielding member 130 may be detachably connected via a snap-fit ​​structure, a mortise and tenon structure, or a threaded structure.

[0038] For example, Figure 1 and Figure 3 As shown, when the light source system 100 includes two light emitting components 110, such as the light emitting component 110 includes a first light emitting component and a second light emitting component, the number of the light shielding member 130 can be one. During assembly, the first light-transmitting member 120 corresponding to the first light emitting component and the first light-transmitting member 120 corresponding to the second light emitting component can be installed on both sides of the first light shielding member 130, and then the first light emitting component 110 and the second light emitting component 110 are placed at appropriate positions respectively, so that the entire light source system 100 can be assembled.

[0039] In some other possible embodiments provided by the present invention, the shading member 130 is spaced apart from the adjacent first light-transmitting member 120, and the distance is less than or equal to 3 mm. It is understandable that in this case, the shading member 130 and the first light-transmitting member 120 can both be installed on other components, so that it is convenient to assemble the shading member 130 and the first light-transmitting member 120 separately. Since the shading member 130 is located between the light-emitting component 110 and the first light-transmitting component 120, at least part of the light beam emitted by the light-emitting component 110 is located in the space corresponding to the first light-transmitting component 120 after being limited by the shading member 130. At the same time, since the light beam emitted by the light-emitting component 110 will diverge outward during the process of propagating toward the first light-transmitting component 120, by spacing the shading member 130 and the adjacent light-transmitting component 120, and the spacing distance is less than or equal to 3 mm, it can be ensured that the divergence space of the light beam emitted by the light-emitting component 110 after being limited by the shading member 130 basically coincides with the space corresponding to the first light-transmitting component 120, and the possibility of exposure is small, so as to avoid the interference of stray light from the adjacent light-emitting component 110 as much as possible and improve the uniformity of the light received by the display screen 210.

[0040] Specifically, the spacing distance between the light shielding member and the adjacent light transmitting member 120 may be 1 mm, 2 mm, 3 mm, or other sizes.

[0041] In some possible embodiments provided by the present invention, when the number of the light emitting components 110 is greater than or equal to three, the number of the light shielding members 130 is at least two.

[0042] In one example, when multiple light emitting components 110 are arranged in a polygonal shape, such as three light emitting components 110 are arranged in a triangle or a straight line, four light emitting components 110 are arranged in a rectangle, etc., the corresponding multiple light shielding members 130 are radially distributed and the multiple light shielding members 130 are detachably connected. Therefore, after the light emitting components 110 on both sides of the light shielding member 130 are installed on the light shielding member 130, the adjacent light shielding members 130 can be connected in turn and matched with the corresponding light emitting components 110 to realize the assembly of the entire light source system 100, which is simple to operate and convenient to use.

[0043] Specifically, the plurality of shading members 130 may be detachably connected to each other via a snap-fit ​​structure, a mortise and tenon structure, or a threaded structure.

[0044] For example, when the light source system 100 includes four light-emitting components 110, the four light-emitting components 110 are arranged in a rectangular shape, the number of the shading members 130 can be four, and the four shading members 130 are radially distributed between the four light-emitting components 110. It can be understood that the four shading members 130 are distributed in a cross shape between two adjacent light-emitting components 110 to block the four light-emitting components 130 in pairs. Specifically, if the light-emitting component 110 includes a first light-emitting component, a second light-emitting component, a third light-emitting component, and a fourth light-emitting component, the shading member 130 includes a first shading member, a second shading member, a third shading member, and a fourth shading member, the shading member 130 is detachably connected to the adjacent first light-transmitting member 120 as an example for explanation. At this time, the first light-transmitting member 120 corresponding to the first light-emitting component and the first light-transmitting member 120 corresponding to the second light-emitting component can be installed on both sides of the first shading member, and the first light-transmitting member 120 corresponding to the third light-emitting component and the first light-transmitting member 120 corresponding to the fourth light-emitting component can be installed on both sides of the second shading member. Then, the first light-transmitting member 120 corresponding to the first light-emitting member and the first light-transmitting member 120 corresponding to the third light-emitting member are placed adjacent to each other, and the first light-shielding member and the second light-shielding member are connected. Then, the third light-shielding member is placed between the first light-transmitting member 120 corresponding to the first light-emitting member and the first light-transmitting member 120 corresponding to the third light-emitting member, and the third light-shielding member is connected to the first light-shielding member and / or the second light-shielding member, and the fourth light-shielding member is placed between the first light-transmitting member 120 corresponding to the second light-emitting member and the first light-transmitting member 120 corresponding to the fourth light-emitting member, and the fourth light-shielding member is connected to the first light-shielding member and / or the second light-shielding member, thereby realizing the connection of the four light-shielding members 130. Finally, the first light-emitting component, the second light-emitting component, the third light-emitting component, and the fourth light-emitting component are placed at appropriate positions respectively, and the assembly of the entire light source system 100 can be realized.

[0045] In another example, when a plurality of light emitting components 110 are arranged in a straight line, such as three light emitting components 110 are arranged in a straight line, four light emitting components 110 are arranged in a straight line, etc., a plurality of corresponding shading members 130 are arranged at intervals. In this arrangement, the number of shading members 130 can be one less than the number of light emitting components 110, which is conducive to saving use costs.

[0046] For example, when the light source system 100 includes three light-emitting components 110, the three light-emitting components 110 are arranged in a straight line, the number of the shading members 130 can be two, and the two shading members 130 are arranged at intervals. If the light-emitting component 110 includes a first light-emitting component, a second light-emitting component, and a third light-emitting component, the shading member 130 includes a first shading member, a second shading member, and a third shading member, and the shading member 130 is detachably connected to the adjacent first light-transmitting member 120 as an example for explanation. At this time, the first light-transmitting member 120 corresponding to the first light-emitting component and the first light-transmitting member 120 corresponding to the second light-emitting component can be installed on both sides of the first light-transmitting member. Then, the first light-transmitting member 120 corresponding to the third light-emitting component is installed on one side of the second light-transmitting member, and the other side of the second light-transmitting member is connected to the first light-transmitting member 120 corresponding to the second light-emitting component, thereby realizing the connection between the two shading members 130 and the three first light-transmitting members 120 corresponding to the three light-emitting components 110, and the two shading members 130 are arranged at intervals. Finally, the first light-emitting component, the second light-emitting component, and the third light-emitting component are placed at appropriate positions respectively, and the entire light source system 100 can be assembled.

[0047] It is understandable that when the printing format is changed, the original light source system 100 can be disassembled using the detachable structure, and then a suitable light emitting component 110 and the first light transmitting member 120 can be selected and assembled with the light shielding member 130 again to assemble a new light source system 100 .

[0048] like Figure 1 and Figure 3 As shown, in some possible embodiments provided by the present invention, the light-emitting component 110 includes a light-emitting body 111 and a second light-transmitting member 112, and the light-emitting body 111 and the corresponding first light-transmitting member 120 are respectively located on opposite sides of the second light-transmitting member 112, and the light emitted by the light-emitting body 111 is refracted by the second light-transmitting member 112 and the first light-transmitting member 120 in sequence before being projected.

[0049] Among them, the luminous body 111 is the source of the light beam, and the luminous body 111 can be a point light source or a surface light source. The light beam emitted by the luminous body 111 has the characteristics that the closer to the edge of the light beam, the larger the angle between the propagation angle of the light and the central light, and the density of the light gradually becomes sparse from the central light to the edge. The second light-transmitting member 112 is located between the exit light path of the luminous body 111 and the first light-transmitting member 120, and is used to refract the light emitted by the luminous body 111. By refracting the light at different positions in the light beam emitted by the luminous body 111 to different degrees, after the light passes through the second light-transmitting member 112, the light in the sparse area near the edge of the light beam gradually approaches each other, so as to achieve uniform light. It can be understood that the light passing through the second light-transmitting member 112 is still propagated in the form of a light beam, and then the propagation angle of the light is adjusted to be vertical or approximately vertical to the direction of the display screen 210 through the first light-transmitting member 120, that is, the light is collimated. It can be understood that the first light-transmitting member 120 and the second light-transmitting member 112 cooperate with each other to achieve light homogenization and collimation.

[0050] Furthermore, since the light source system 100 includes at least two light-emitting components 110 , the light-emitting areas of at least two light-emitting bodies 111 among the plurality of light-emitting bodies 111 may be equal or unequal.

[0051] Among them, when the light-emitting areas of at least two of the multiple light-emitting bodies 111 are equal, it can be understood that the specifications of the two light-emitting bodies 111 are consistent, such as the sizes and light-emitting powers of the two light-emitting bodies 111 are the same. When the light-emitting areas of at least two of the multiple light-emitting bodies 111 are unequal, it can be understood that the specifications of the two light-emitting bodies 111 are inconsistent, such as the light-emitting sizes and light-emitting powers of the two light-emitting bodies 111 are the same.

[0052] Among them, the light-transmitting area of ​​the second light-transmitting member 112 is directly proportional to the light-emitting area of ​​the light-emitting body 111; the light-transmitting area of ​​the first light-transmitting member 120 is directly proportional to the light-emitting area of ​​the light-emitting body 111. That is to say, when the light-emitting area of ​​the light-emitting body 111 is determined, the light-transmitting area of ​​the first light-transmitting member 120 corresponding to the light-emitting body 111 and the light-transmitting area of ​​the second light-transmitting member 112 corresponding to the light-emitting body 111 are also determined. That is, when the light-emitting areas of two light-emitting bodies 111 are the same, the sizes of the two second light-transmitting members 112 corresponding to the two light-emitting bodies 111 can be consistent, so that the two second light-transmitting members 112 can be interchangeable, so as to facilitate installation and maintenance, and reduce maintenance costs. It can be understood that in this case, the sizes of the two first light-transmitting members 120 corresponding to the two light-emitting bodies 111 can be consistent, so that the two first light-transmitting members 120 can be interchangeable, so as to facilitate installation and maintenance, and reduce maintenance costs. Specifically, as Figure 1 and Figure 3As shown, there are two light-emitting components 110, the light-emitting areas of the two light-emitting bodies 111 are equal, the light-transmitting areas of the two first light-transmitting members 120 corresponding to the two light-emitting bodies 111 are equal, and the light-transmitting areas of the two second light-transmitting members 112 corresponding to the two light-emitting bodies 111 are equal.

[0053] It is understandable that the light-emitting areas of at least two of the multiple light-emitting bodies 111 may be unequal, and in this case, the light-transmitting areas of the two first light-transmitting members 120 corresponding to the two light-emitting bodies 111 are also different, and the light-transmitting areas of the two second light-transmitting members 112 corresponding to the two light-emitting bodies 111 are also different. Thus, light-emitting bodies 111 of different specifications, and the corresponding second light-transmitting members 112, the corresponding first light-transmitting members 120 and the light-shielding members 130 can be flexibly assembled to assemble different light source systems 100, so as to meet the requirements of different printing formats and expand the use range of the light-emitting assembly 110.

[0054] Specifically, the light-emitting areas of all the light-emitting bodies 111 in the light source system 100 may be the same, or different, or partially the same and partially different. Specifically, at least two light-emitting bodies 111 are the same, at least two second light-transmitting members 112 are the same, and at least two first light-transmitting members 120 are the same, so that the same components can be interchanged to achieve standardized mass production, facilitate installation, and reduce maintenance costs. It is understandable that the same light-emitting body 111, the same second light-transmitting member 112, and the same first light-transmitting member 120 will inevitably be different due to manufacturing and processing, and this difference is very small and can be ignored.

[0055] like Figure 2 As shown, in some possible embodiments provided by the present invention, the light emitting body 111 of the same light-emitting component 110 is opposite to the bottom center of the second light-transmitting member 112, and the light emitted by the light emitting body 111 includes a central light, which propagates along the first optical axis of the corresponding second light-transmitting member 112 and the second optical axis of the corresponding first light-transmitting member 120 in sequence; wherein, the distance between the top of the light emitting body 111 and the bottom of the corresponding second light-transmitting member 112 is L1, the distance between the top of the light emitting body 111 and the bottom of the corresponding first light-transmitting member 120 is L2, the focal length of the first light-transmitting member 120 is F, and F satisfies: L1≤0.3F, 0.8L2≤F≤1.2L2.

[0056] Among them, the focal length F refers to the distance between the focus and the optical center of the first light-transmitting member 120. If the light-emitting body 111 is located at the focus of the first light-transmitting member 120 to emit light, the light will be emitted as parallel light through the first light-transmitting member 120. F is limited to satisfy L1≤0.3F, 0.8L2≤F≤1.2L2, so that the light beam emitted by the light-emitting body 111 has sufficient collimation after passing through the first light-transmitting member 120 to ensure good printing effect and printing accuracy. Specifically, L1=0.3F, or L1=0.4F, or L1=0.5F, etc., 0.8L2=F, or 0.9L2=F, or L2=F, or F=1.2L2, etc.

[0057] It can be understood that although the second light-transmitting member 112 will make the light beam have a certain convergence effect, the degree of convergence is relatively weak, and the light-emitting angle of the light-emitting body 111 is relatively small, and there will be no large-scale change in the light propagation angle. F is limited to L1≤0.3F, 0.8L2≤F≤1.2L2, so that the first light-transmitting member 120 can ensure a higher collimation effect.

[0058] Further, the distance between the top of the second light-transmitting member 112 and the bottom of the light-shielding member 130 is L3, L3≤30mm, and the distance between the top of the second light-transmitting member 112 and the bottom of the light-shielding member 130 is reasonably set, which can reduce the light energy loss of the light-emitting body 111 and improve the light energy utilization rate of the light-emitting body 111 while ensuring that the light-shielding member 130 has a good effect of filtering out the stray light interference of the adjacent light-emitting body 111. Specifically, the distance L3 between the top of the second light-transmitting member 112 and the bottom of the light-shielding member 130 can be 20mm, 25mm, 30mm, or other sizes.

[0059] Furthermore, the multiple light emitters 111 are all located on the same mounting plane, the multiple first light-transmitting members 120 are all located on the same mounting plane, and the multiple second light-transmitting members 112 are all located on the same mounting plane. Thus, it is ensured that the multiple light emitters 111 are matched with the corresponding first light-transmitting members 120 and second light-transmitting members 112, so that the light beams of each light emitter 111 have sufficient collimation after passing through the corresponding first light-transmitting member 120, so as to ensure good printing effect and printing accuracy. Specifically, Figure 1 and Figure 3 As shown, the two luminous bodies 111 of the two light-emitting components are located on the same installation plane, the corresponding two first light-transmitting members 120 are located on the same installation plane, and the corresponding two second light-transmitting members 112 are located on the same installation plane.

[0060] like Figure 1 , Figure 2 and Figure 3As shown, in some possible embodiments provided by the present invention, the light-emitting assembly 110 further includes a mounting plate 113, and the light-emitting body 111 is mounted on the mounting plate 113 so that the mounting plate 113 can carry the light-emitting body 111 and dissipate heat for it. That is to say, the mounting plate 113 can not only realize the bearing function of the light-emitting body 111, but also dissipate heat for the light-emitting body 111. Thus, the light-emitting body 111 can be dissipated in time by using the mounting plate 113, so that the light-emitting body 111 has a good heat dissipation effect, and the service life of the light-emitting body 111 is extended. At the same time, this arrangement enables the mounting plate 113 to directly have a heat dissipation effect, and other heat dissipation devices can be omitted, and the light-emitting body 111 can also have a good heat dissipation effect, simplifying the structure, which is conducive to reducing the size of the light-emitting assembly 110, and thus expanding the scope of use. Of course, in order to further improve the heat dissipation effect, other heat dissipation devices can also be further installed on the mounting plate 113.

[0061] In one example, the second light-transmitting member 112 includes a support portion and a light-transmitting portion that enclose a receiving cavity, and the support portion is connected to the mounting plate 113 and surrounds the circumference of the light-emitting body 111 corresponding to the second light-transmitting member 112, so as to cover the light-emitting body 111 in the receiving cavity. The light-transmitting portion can be a Fresnel lens, and the light-transmitting portion is mounted on the mounting plate 113 through the support portion to realize the assembly of the entire light-emitting component 110, which is simple to operate and convenient to assemble. At the same time, the support portion surrounds the circumference of the light-emitting body 111 corresponding to the second light-transmitting member 112, so as to cover the light-emitting body 111 in the receiving cavity enclosed by the support portion and the light-transmitting portion. The support portion can have a light-shielding property, so that the light emitted by the light-emitting body 111 will not be projected outside the support portion, and the light emitted by the light-emitting body 111 can be refracted by the light-transmitting portion and propagated out, that is, it can prevent the light emitted by the light-emitting body 111 from leaking outside the support portion. Specifically, the light-transmitting portion may be connected to the supporting portion via an adhesive, and the supporting portion may be connected to the mounting plate 113 via an adhesive; or, the light-transmitting portion may be connected to the supporting portion via other structures, and the supporting portion may be connected to the mounting plate 113 via other structures.

[0062] In another example, the second light-transmitting member 112 includes a planar support portion and a light-transmitting portion, and the support portion is used to connect with the mounting plate 113. The second light-transmitting member 112 of this structure can simplify the setting of the accommodating cavity, facilitate processing, and facilitate production. In this case, a protruding structure can be provided on the mounting plate 113 to connect with the support portion of the second light-transmitting member 112, or the mounting plate 113 and the second light-transmitting member 112 can be installed on other components respectively.

[0063] In some possible embodiments provided by the present invention, the illuminant 111 is an integrated surface light source, which has high power and is conducive to improving printing effect and printing accuracy. That is, the illuminant 111 can be a cob light source (Chip On Board Light).

[0064] The diameter of the light emitter 111 is greater than or equal to 1 mm and less than or equal to 15 mm, thereby ensuring that the light emitter 111 provides sufficient light energy and avoiding the problem of poor heat dissipation due to the large area of ​​the light emitter 111, thereby improving the service life and reliability of the light emitter 111. Specifically, the diameter of the light emitter 111 can be 2 mm, 4 mm, 6 mm, 10 mm, 12 mm, etc.

[0065] The light emitting angle of the light emitting body 111 is greater than or equal to 1 degree and less than or equal to 120 degrees, so that the light density difference in the light beam of the light emitting body 111 is reduced, which is more convenient for uniformity and collimation of the light and avoids excessive stray light. Specifically, the light emitting angle of the light emitting body 111 can be 10 degrees, 30 degrees, 60 degrees, 90 degrees, 100 degrees, 120 degrees, etc.

[0066] like Figure 1 and Figure 3 As shown, in some possible embodiments provided by the present invention, the second light-transmitting member 112 includes a first incident surface and a first exit surface, the first incident surface is opposite to the corresponding light-emitting body 111, and the first exit surface is opposite to the corresponding first light-transmitting member 120; the first incident surface is a plane, and the first exit surface is a curved surface or a spherical surface or a free-form surface, and uniform light can be achieved by adjusting the surface shape of the first exit surface. Specifically, the second light-transmitting member 112 can be a free-form surface lens.

[0067] In some possible embodiments provided by the present invention, the first light-transmitting member 120 is a Fresnel lens, and the first light-transmitting member 120 includes a second incident surface and a second exit surface, the second incident surface is opposite to the corresponding first light-transmitting member 120, and the second exit surface is used to be opposite to the display screen 210 of the stereoscopic forming device; the second incident surface is a light surface or a plane, and the second exit surface is a tooth surface. Among them, the second incident surface and the second exit surface can both be smooth surfaces, such as arc-shaped surfaces, or in one embodiment, the second incident surface is a plane, and the second exit surface is a concave-convex surface, such as the second exit surface includes arc-shaped protrusions distributed outward from the optical center of the first light-transmitting member 120, and the multiple arc-shaped protrusions can be concentric circles or arcs with the optical center of the first light-transmitting member 120 as the center. The second exit surface is a concave-convex surface, which can reduce the reflection of light by the first light-transmitting member 120, so that the utilization rate of light is higher.

[0068] The second aspect of the utility model provides a three-dimensional forming device, including a light source system 100 of any embodiment in the first aspect, and: a display screen 210, a first light-transmitting member 120 and the display screen 210 are arranged opposite to each other, and the display screen 210 and the light-emitting component 110 are respectively located on different sides of the first light-transmitting member 120; the light emitted by the light-emitting component 110 is refracted by the first light-transmitting member 120 and then projected vertically onto the display screen 210.

[0069] In some possible embodiments provided by the present invention, the interval distance between the first light-transmitting member 120 and the display screen 210 is L4, and the focal length of the first light-transmitting member 120 is F, which satisfies: L4<0.1F.

[0070] In this embodiment, by reasonably setting the spacing L4 between the first light-transmitting member 120 and the display screen 210 and the focal length F of the first light-transmitting member 120, so that L4<0.1F, the intensity and collimation of the light can be guaranteed, and the light intensity loss caused by the long propagation path after the light passes through the first light-transmitting member 120 can be avoided, and the interference of stray light can be avoided. Specifically, in the embodiment where the first light-transmitting member 120 is a Fresnel lens and the concave-convex surface is opposite to the display screen 210, L3 refers to the minimum spacing between the Fresnel lens and the display screen 210, or the spacing between the vertex of the teeth of the Fresnel lens and the display screen 210. Specifically, L4=0.08F, L4=0.09F, L4=0.095F, or other sizes.

[0071] In some possible embodiments provided by the utility model, the three-dimensional forming equipment also includes: a base, a mounting port is provided on the top of the base, a display screen 210 is connected to the base and covers the mounting port, a light source system 100 is located inside the base, a light-emitting component 110 is connected to the base, and a first light-transmitting member 120 is connected to the base.

[0072] The first light-transmitting member 120 is located below the display screen 210 , so that the light emitted by the light-emitting assembly 110 in the base is refracted by the first light-transmitting member 120 and then projected onto the display screen 210 in a direction approximately perpendicular to the display screen 210 , so as to achieve resin curing.

[0073] Among them, the light-emitting component 110 can be installed at a suitable position inside the base through the mounting plate 113. For example, the light-emitting component 110 can be fixed on the inner bottom plate of the base through the mounting plate 113, that is, the mounting plate 113 is connected to the inner bottom plate of the base, and the light-emitting body 111 and the second light-transmitting component 112 can be fixed at a suitable position inside the base.

[0074] Among them, after the second light-transmitting member 112 is connected to the light-shielding member 130, the light-shielding member 130 can be connected to the base through the light-shielding member 130 to fix the second light-transmitting member 112 and the light-shielding member 130 at a suitable position inside the base, or the second light-transmitting member 112 can be connected to the base to fix the second light-transmitting member 112 and the light-shielding member 130 at a suitable position inside the base, or the second light-transmitting member 112 and the light-shielding member 130 can be connected to the base at the same time to fix the second light-transmitting member 112 and the light-shielding member 130 at a suitable position inside the base, thereby realizing the installation of the entire light source system 100 and the base.

[0075] Specifically, Figures 1 to 3 The utility model also provides the following implementation modes:

[0076] Label 1, a light source system 100, comprising: a light-emitting component 110, a first light-transmitting member 120 and a shading member 130, wherein the number of the light-emitting components 110 is at least two, the first light-transmitting members 120 correspond to the light-emitting components 110 one by one and are arranged on the output light path of the light-emitting component 110, the shading member 130 is located between the light-emitting component 110 and the first light-transmitting member 120, and is arranged between two adjacent first light-transmitting members 120, so as to confine at least part of the light emitted by the corresponding light-emitting component 110 to the space corresponding to the first light-transmitting member 120.

[0077] Label 2, according to the light source system 100 of label 1, the shading member 130 is detachably connected to the adjacent first light-transmitting member 120; or the shading member 130 is spaced apart from the adjacent first light-transmitting member 120, and the distance is less than or equal to 3mm; the shading member 130 is made of black light-absorbing material.

[0078] Label 3, according to the light source system 100 of label 1, the number of light-emitting components 110 is greater than or equal to three, the multiple light-emitting components 110 are arranged in a polygonal shape, the corresponding multiple shading members 130 are distributed radially and the multiple shading members 130 are detachably connected; or the multiple light-emitting components 110 are arranged in a straight line, and the corresponding multiple shading members 130 are arranged at intervals.

[0079] Label 4, according to the light source system 100 of label 1, the light-emitting component 110 includes a light-emitting body 111 and a second light-transmitting member 112, the light-emitting body 111 and the corresponding first light-transmitting member 120 are respectively located on the opposite sides of the second light-transmitting member 112, and the light emitted by the light-emitting body 111 is refracted by the second light-transmitting member 112 and the first light-transmitting member 120 in sequence and then projected; wherein, the light-emitting areas of at least two light-emitting bodies 111 are equal or unequal; the light-transmitting area of ​​the second light-transmitting member 112 is proportional to the light-emitting area of ​​the light-emitting body 111; the light-transmitting area of ​​the first light-transmitting member 120 is proportional to the light-emitting area of ​​the light-emitting body 111.

[0080] Label 5, according to the light source system 100 of label 4, at least two light-emitting bodies 111 are identical, at least two second light-transmitting members 112 are identical, and at least two first light-transmitting members 120 are identical; the light-emitting body 111 of the same light-emitting component 110 is opposite to the bottom center of the second light-transmitting member 112, and the light emitted by the light-emitting body 111 includes a central light, which propagates along the first optical axis of the corresponding second light-transmitting member 112 and the second optical axis of the corresponding first light-transmitting member 120 in sequence; wherein, the distance between the top of the light-emitting body 111 and the bottom of the corresponding second light-transmitting member 112 is L1, the distance between the top of the light-emitting body 111 and the bottom of the corresponding first light-transmitting member 120 is L2, the focal length of the first light-transmitting member 120 is F, and F satisfies: L1≤0.3F, 0.8L2≤F≤1.2L2; the distance between the top of the second light-transmitting member 112 and the bottom of the shading member 130 is L3, and L3≤30mm.

[0081] Label 6, according to the light source system 100 of label 4, the light-emitting component 110 also includes a mounting plate 113, and the light-emitting body 111 is mounted on the mounting plate 113 so that the mounting plate 113 supports the light-emitting body 111 and dissipates heat for it; the second light-transmitting member 112 includes a supporting portion and a light-transmitting portion that together form a receiving cavity, the supporting portion is connected to the mounting plate 113 and surrounds the circumference of the light-emitting body 111 corresponding to the second light-transmitting member 112, so as to cover the light-emitting body 111 in the receiving cavity; or the second light-transmitting member 112 includes a planar supporting portion and a light-transmitting portion, and the supporting portion is used to be connected to the mounting plate 113.

[0082] Label 7, according to the light source system 100 of label 4, the light-emitting body 111 is an integrated surface light source; the diameter of the light-emitting body 111 is greater than or equal to 1 mm and less than or equal to 15 mm; the light-emitting angle of the light-emitting body 111 is greater than or equal to 1 degree and less than or equal to 120 degrees; the second light-transmitting member 112 includes a first incident surface and a first exit surface, the first incident surface is opposite to the corresponding light-emitting body 111, and the first exit surface is opposite to the corresponding first light-transmitting member 120; the first incident surface is a plane, and the first exit surface is a curved surface.

[0083] Label 8, according to the light source system 100 of label 1, the first light-transmitting member 120 is a Fresnel lens, the first light-transmitting member 120 includes a second incident surface and a second exit surface, the second incident surface is opposite to the corresponding first light-transmitting member 120, and the second exit surface is used to be opposite to the display screen 210 of the three-dimensional forming device; the second incident surface is a light surface or a plane, and the second exit surface is a toothed surface.

[0084] Label 9, a three-dimensional forming device, comprising a light source system 100 as any one of the labels 1 to 8 above, and: a display screen 210, a first light-transmitting member 120 and the display screen 210 are arranged opposite to each other, and the display screen 210 and the light-emitting component 110 are respectively located on different sides of the first light-transmitting member 120; the light emitted by the light-emitting component 110 is refracted by the first light-transmitting member 120 and then vertically projected onto the display screen 210.

[0085] Reference numeral 10, according to the three-dimensional forming device of reference numeral 9, the spacing distance between the first light-transmitting member 120 and the display screen 210 is L4, and the focal length F of the first light-transmitting member 120 satisfies: L4<0.1F.

[0086] Label 11, according to the three-dimensional forming equipment of label 9, also includes: a base, a mounting port is set on the top of the base, the display screen 210 is connected to the base and covers the mounting port, the light source system 100 is located inside the base, the light-emitting component 110 is connected to the base, and the first light-transmitting member 120 is connected to the base.

[0087] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the terms "upper" and "lower" indicate positions or positional relationships based on the positions or positional relationships described in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A light source system for a stereoscopic forming device, characterized in that: The light source system comprises: A light-emitting component, a first light-transmitting component and a light-shielding component, wherein: The number of the light-emitting components is at least two, the first light-transmitting components correspond to the light-emitting components one by one and are arranged on the output light path of the light-emitting components, the light-shielding component is located between the light-emitting components and the first light-transmitting components, and is arranged between two adjacent first light-transmitting components to limit at least part of the light emitted by the corresponding light-emitting components to the space corresponding to the first light-transmitting components.

2. The light source system according to claim 1, characterized in that: The light shielding member is detachably connected to the adjacent first light transmitting member; or the light shielding member is spaced apart from the adjacent first light transmitting member, and the distance between them is less than or equal to 3 mm; The shading element is made of black light-absorbing material.

3. The light source system according to claim 1, characterized in that: The number of the light-emitting components is greater than or equal to three, the multiple light-emitting components are arranged in a polygonal shape, the corresponding multiple shading members are distributed radially and the multiple shading members are detachably connected; or the multiple light-emitting components are arranged in a straight line, and the corresponding multiple shading members are arranged at intervals.

4. The light source system according to claim 1, characterized in that: The light-emitting assembly includes a light-emitting body and a second light-transmitting member, wherein the light-emitting body and the corresponding first light-transmitting member are respectively located on opposite sides of the second light-transmitting member, and the light emitted by the light-emitting body is refracted by the second light-transmitting member and the first light-transmitting member in sequence before being projected; Wherein, the light-emitting areas of at least two of the light-emitting bodies are equal or unequal; The light transmission area of ​​the second light transmission member is proportional to the light emitting area of ​​the light emitting body; The light-transmitting area of ​​the first light-transmitting member is proportional to the light-emitting area of ​​the light-emitting body.

5. The light source system according to claim 4, characterized in that: At least two of the light-emitting bodies are identical to each other, at least two of the second light-transmitting members are identical to each other, and at least two of the first light-transmitting members are identical to each other; The luminous body of the same luminous component is opposite to the bottom center of the second light-transmitting member, and the light emitted by the luminous body includes a central light, and the central light propagates along the first optical axis of the corresponding second light-transmitting member and the second optical axis of the corresponding first light-transmitting member in sequence; The distance between the top of the luminous body and the corresponding bottom of the second light-transmitting member is L1, the distance between the top of the luminous body and the corresponding bottom of the first light-transmitting member is L2, the focal length of the first light-transmitting member is F, and F satisfies: L1≤0.3F, 0.8L2≤F≤1.2L2; The distance between the top of the second light-transmitting member and the bottom of the light-shielding member is L3, and L3 is ≤ 30 mm.

6. The light source system according to claim 4, characterized in that: The light-emitting assembly further comprises a mounting plate, and the light-emitting body is mounted on the mounting plate so that the mounting plate supports the light-emitting body and dissipates heat for the light-emitting body; The second light-transmitting member includes a supporting portion and a light-transmitting portion which together form a receiving cavity, wherein the supporting portion is connected to the mounting plate and surrounds the luminous body corresponding to the second light-transmitting member so as to cover the luminous body in the receiving cavity; or The second light-transmitting member includes a planar supporting portion and a light-transmitting portion, wherein the supporting portion is used to be connected to the mounting plate.

7. The light source system according to claim 4, characterized in that: The illuminant is an integrated surface light source; The diameter of the luminous body is greater than or equal to 1 mm and less than or equal to 15 mm; The luminous angle of the luminous body is greater than or equal to 1 degree and less than or equal to 120 degrees; The second light-transmitting member comprises a first incident surface and a first emitting surface, the first incident surface is opposite to the corresponding light-emitting body, and the first emitting surface is opposite to the corresponding first light-transmitting member; The first incident surface is a plane, and the first exit surface is a curved surface.

8. The light source system according to claim 1, characterized in that: The first light-transmitting member is a Fresnel lens, and the first light-transmitting member includes a second incident surface and a second exit surface, the second incident surface is opposite to the corresponding first light-transmitting member, and the second exit surface is used to be opposite to the display screen of the stereoscopic forming device; The second incident surface is a light surface or a plane, and the second exit surface is a tooth surface.

9. A three-dimensional forming device, characterized in that: The light source system comprises the light source system as claimed in any one of claims 1 to 8, and: A display screen, wherein the first light-transmitting member is arranged opposite to the display screen, and the display screen and the light-emitting component are respectively located on two different sides of the first light-transmitting member; The light emitted by the light emitting component is refracted by the first light-transmitting component and then vertically projected onto the display screen.

10. The three-dimensional forming device according to claim 9, characterized in that: The spacing distance between the first light-transmitting member and the display screen is L4, and the focal length F of the first light-transmitting member satisfies: L4<0.1F.

11. The three-dimensional forming device according to claim 9, characterized in that: Also includes: A base, a mounting opening is arranged on the top of the base, the display screen is connected to the base and covers the mounting opening, the light source system is located inside the base, the light emitting component is connected to the base, and the first light-transmitting member is connected to the base.

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