Light source device applied to 3D printer and 3D printer

Abstract

The utility model provides a light source device applied to a 3D printer and the 3D printer, and the light source device comprises a device base body which is provided with a mounting cavity and is provided with a light outlet; the light source is arranged in the mounting cavity; the optical assembly is arranged on the device base body and comprises a screen and a lens, the screen is located at the light outlet, the lens is arranged in the mounting cavity and located between the screen and the light source, a heat dissipation channel is formed between the screen and the lens and provided with a first inlet and a first outlet, and at least one of the first inlet and the first outlet communicates with the mounting cavity; and the power assembly is arranged on the device base body, and the power assembly can enable the heat dissipation medium to flow between the mounting cavity and the heat dissipation channel. According to the technical scheme, the problem that a screen in a light source device in the related technology is difficult to dissipate heat can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a light source device applied to a 3D printer and a 3D printer. Background Art

[0002] With the continuous development of science and technology, the application scope of 3D printing technology in people's lives is becoming wider and wider. Among them, LCD light-curing printer is a device that can realize 3D printing. When the light source in the LCD light-curing printer is irradiated on the screen and its mounting structure, it will produce a heating effect on the screen and its mounting structure, causing the screen and its mounting structure to have a high temperature during the 3D printing process. In particular, the screen and its mounting structure will continue to accumulate heat after being irradiated for a long time, causing the screen to work in a high temperature state for a long time, seriously affecting the service life of the screen. In addition, the fasteners that fix the screen on the mounting structure are also prone to deformation under high temperature conditions, thereby affecting the fastening effect of the screen; usually, the LCD light-curing printer needs to stop for heat dissipation after working for a predetermined time, which affects the printing efficiency of the LCD light-curing printer. Therefore, there is a problem in the art that the screen in the light source device is difficult to dissipate heat. Utility Model Content

[0003] The main purpose of the utility model is to provide a light source device applied to a 3D printer and a 3D printer, so as to solve the problem that the screen in the light source device in the related art is difficult to dissipate heat.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, there is provided a light source device for a 3D printer, comprising: a device base having a mounting cavity, a light outlet being arranged on the device base; a light source being arranged in the mounting cavity; an optical component being arranged on the device base, the optical component comprising a screen and a lens, the screen being located at the light outlet, the lens being arranged in the mounting cavity and between the screen and the light source, a heat dissipation channel being provided between the screen and the lens, the heat dissipation channel having a first inlet and a first outlet, at least one of the first inlet and the first outlet being connected to the mounting cavity; a power component being arranged on the device base, the power component being capable of allowing a heat dissipation medium to flow between the mounting cavity and the heat dissipation channel.

[0005] Furthermore, the light source device also includes a guide member, the power assembly includes a first power member, the guide member is arranged between the first power member and the first inlet, and the guide member can guide the heat dissipation medium in the installation cavity into the heat dissipation channel through the first inlet.

[0006] Furthermore, the flow guide member has a flow guide channel, and the cross-sectional area of ​​the flow guide channel gradually decreases in the direction from the first power member to the first inlet.

[0007] Furthermore, a first opening communicating with the outside is provided on the device base, and the first opening is provided on a side of the first power member away from the first inlet, and the first power member can introduce external heat dissipation medium into the heat dissipation channel.

[0008] Furthermore, the first power member has a second inlet and a second outlet, the second outlet is arranged opposite to the first inlet, and at least a portion of the second inlet is communicated with the installation cavity.

[0009] Furthermore, the second inlet has a first area corresponding to the first opening and a second area connected to the installation cavity, and the light source device also includes a connecting pipe arranged between the first opening and the first power member, and the connecting pipe connects the first opening and the first area; and / or, the light source device also includes a filter portion arranged at the first opening.

[0010] Furthermore, the optical component also includes a mounting base arranged at the light outlet, the mounting base having a second opening away from the light source and a third opening close to the light source, the screen is arranged at the second opening, the lens is arranged at the third opening, a heat dissipation channel is formed between the screen and the lens, and a first inlet and a first outlet are formed on the mounting base.

[0011] Furthermore, the optical component also includes a first fastener, the mounting seat has a first step surface, the screen is abutted against the first step surface, and the screen is connected to the mounting seat via the first fastener; and / or, the optical component also includes a second fastener, the mounting seat has a second step surface, the lens is abutted against the second step surface, and the lens is connected to the mounting seat via the second fastener.

[0012] Furthermore, the power assembly also includes a second power member, which is arranged at the first outlet to guide the heat dissipation medium in the heat dissipation channel into the installation cavity through the first outlet.

[0013] Furthermore, the light source device also includes a heat sink connected to the light source, the heat sink includes heat dissipation fins, and the heat dissipation fins are located at the outlet of the second power member.

[0014] According to another aspect of the present invention, a 3D printer is provided, comprising a light source device, and the light source device is the above-mentioned light source device.

[0015] The technical solution of the utility model is applied, the device base is used to provide an installation foundation for each structure of the light source device, the device base has an installation cavity, a light outlet is arranged on the device base, the light source is arranged in the installation cavity, the light source is used to emit light, and the light emitted by the light source is emitted from the light outlet; the optical component includes a screen and a lens, the screen is located at the light outlet, the lens is located between the screen and the light source, and there is a heat dissipation channel between the screen and the lens, that is, the light emitted by the light source will pass through the lens, the heat dissipation channel and the screen in sequence; the heat dissipation channel has a first inlet and a first outlet, at least one of the first inlet and the first outlet is connected to the installation cavity, the power component can make the heat dissipation medium flow between the installation cavity and the heat dissipation channel, when the heat dissipation medium flows in the heat dissipation channel, the heat dissipation medium can take away the heat of the screen and the lens, so that the heat of the screen and the lens can be reduced, avoiding the screen and the lens from working continuously at high temperature, and ensuring the service life of the screen and the lens. In addition, when the light source device is applied to a 3D printer, while the 3D printer is performing 3D printing, the flow of the heat dissipation medium in the heat dissipation channel dissipates the screen and the lens without having to stop the 3D printing work for heat dissipation, thereby ensuring the efficiency of the 3D printing work. Therefore, the technical solution of the present application can effectively solve the problem that the screen in the light source device in the related art is difficult to dissipate heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A cross-sectional schematic diagram of a first embodiment of a light source device applied to a 3D printer according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 An enlarged schematic diagram of part A of the light source device;

[0019] Figure 3 A cross-sectional schematic diagram of a second embodiment of a light source device applied to a 3D printer according to the utility model is shown;

[0020] Figure 4 Shows Figure 3 A schematic diagram of the three-dimensional structure of a flow guide member of a light source device;

[0021] Figure 5 A schematic diagram of the principles of an embodiment of a 3D printer according to the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. Device base; 11. Mounting cavity; 12. Light outlet; 13. First opening;

[0024] 20. Light source;

[0025] 30. Optical component; 31. Screen; 32. Lens; 33. Heat dissipation channel; 331. First inlet; 332. First outlet; 34. Mounting seat; 341. Second opening; 342. Third opening; 343. First step surface; 344. Second step surface;

[0026] 40. Power assembly; 41. First power member; 411. Second inlet; 4111. First region; 4112. Second region; 412. Second outlet; 42. Second power member;

[0027] 50. flow guide; 51. flow guide channel; 53. first port; 54. second port;

[0028] 60. Connecting pipe;

[0029] 70. Filter unit;

[0030] 80. radiator; 81. cooling fin;

[0031] 91. Material tray; 92. Forming platform; 93. Platform mounting structure; 94. Lifting structure. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] like Figure 1 as well as Figure 2 As shown, the present application provides a light source device for a 3D printer. The first embodiment of the light source device of the present application includes: a device base 10, a light source 20, an optical component 30, and a power component 40; the device base 10 has a mounting cavity 11, and a light outlet 12 is provided on the device base 10; the light source 20 is arranged in the mounting cavity 11; the optical component 30 is arranged on the device base 10, and the optical component 30 includes a screen 31 and a lens 32, the screen 31 is located at the light outlet 12, the lens 32 is arranged in the mounting cavity 11 and between the screen 31 and the light source 20, and a heat dissipation channel 33 is provided between the screen 31 and the lens 32, and the heat dissipation channel 33 has a first inlet 331 and a first outlet 332, and at least one of the first inlet 331 and the first outlet 332 is connected to the mounting cavity 11; the power component 40 is arranged on the device base 10, and the power component 40 can make the heat dissipation medium flow between the mounting cavity 11 and the heat dissipation channel 33.

[0036] In the technical solution of the present embodiment, the device base 10 is used to provide a mounting base for each structure of the light source device. The device base 10 has a mounting cavity 11. A light outlet 12 is provided on the device base 10. The light source 20 is provided in the mounting cavity 11. The light source 20 is used to emit light. The light emitted by the light source 20 is emitted from the light outlet 12. The optical component 30 includes a screen 31 and a lens 32. The screen 31 is located at the light outlet 12. The lens 32 is located between the screen 31 and the light source 20. A heat dissipation channel 33 is provided between the screen 31 and the lens 32. That is to say, the light emitted by the light source 20 will pass through the lens 32 in sequence. , a heat dissipation channel 33 and a screen 31; the heat dissipation channel 33 has a first inlet 331 and a first outlet 332, at least one of the first inlet 331 and the first outlet 332 is connected to the installation cavity 11, and the power assembly 40 can make the heat dissipation medium flow between the installation cavity 11 and the heat dissipation channel 33. When the heat dissipation medium flows in the heat dissipation channel 33, the heat dissipation medium can take away the heat of the screen 31 and the lens 32, thereby reducing the heat of the screen 31 and the lens 32, avoiding the screen 31 and the lens 32 from continuously working at high temperatures, and ensuring the service life of the screen 31 and the lens 32. In addition, when the light source device is applied to a 3D printer, while the 3D printer is performing 3D printing, the flow of the heat dissipation medium in the heat dissipation channel 33 dissipates heat to the screen 31 and the lens 32 without having to stop the 3D printing work for heat dissipation, thereby ensuring the efficiency of the 3D printing work. Therefore, the technical solution of this embodiment can effectively solve the problem that the screen in the light source device in the related art is difficult to dissipate heat.

[0037] It should be noted that, in this embodiment, the light source device is arranged at the lower part of the 3D printer (the 3D printer will be described later), the light of the light source 20 is emitted from bottom to top, and the light source 20, the lens 32, the heat dissipation channel 33 and the screen 31 are arranged in sequence from bottom to top. In this embodiment, the first inlet 331 and the first outlet 332 are both connected to the installation cavity 11. In other embodiments not shown in the figure, the first inlet is connected to the installation cavity, and the first outlet is connected to the outside world, or the first outlet is connected to the installation cavity, and the first inlet is connected to the outside world. In this embodiment, the heat dissipation medium is air, the screen 31 is an LCD screen, and the lens 32 is a Fresnel lens. In addition, the heat dissipation medium can also be low-temperature nitrogen.

[0038] like Figure 1 as well as Figure 2As shown, the optical component 30 also includes a mounting base 34 arranged at the light outlet 12, the mounting base 34 has a second opening 341 away from the light source 20 and a third opening 342 close to the light source 20, the screen 31 is arranged at the second opening 341, the lens 32 is arranged at the third opening 342, the heat dissipation channel 33 is formed between the screen 31 and the lens 32, and the first inlet 331 and the first outlet 332 are formed on the mounting base 34. Specifically, in the present embodiment, the mounting seat 34 is a cylindrical structure, and the mounting seat 34 has upper and lower openings. The upper opening of the mounting seat 34 is the second opening 341, and the lower opening of the mounting seat 34 is the third opening 342. The cross-section of the mounting seat 34 may be rectangular, circular or in other shapes. The screen 31 is disposed at the second opening 341, and the lens 32 is disposed at the third opening 342. The internal space of the mounting seat 34 between the screen 31 and the lens 32 forms a heat dissipation channel 33. A first inlet 331 and a first outlet 332 are formed on the mounting seat 34, so that the heat dissipation medium can enter the internal space of the mounting seat 34 (specifically the heat dissipation channel 33) from the first inlet 331, and can also be discharged from the internal space of the mounting seat 34 (specifically the heat dissipation channel 33) through the first outlet 332, thereby achieving the effect that the heat dissipation medium flows in the heat dissipation channel 33 and takes away the heat of the screen 31 and the lens 32. In addition, in other embodiments, the screen and the lens can be connected through different mounting structures and device bases respectively. In this case, the light source device also includes a sealing structure for sealing the space between the screen and the lens and forming a heat dissipation channel. The first inlet and the first outlet of the heat dissipation channel are formed on this sealing structure.

[0039] like Figure 1 as well as Figure 2 As shown, the optical assembly 30 further includes a first fastener and a second fastener, the mounting seat 34 has a first step surface 343 and a second step surface 344, the screen 31 abuts against the first step surface 343, the lens 32 abuts against the second step surface 344, the screen 31 is connected to the mounting seat 34 via the first fastener, and the lens 32 is connected to the mounting seat 34 via the second fastener. Specifically, the provision of the first step surface 343 and the second step surface 344 enables the mounting seat 34 to stably support the screen 31 and the lens 32, and the first fastener and the second fastener enable the screen 31 and the lens 32 to be stably connected to the mounting seat 34.

[0040] like Figure 1 as well as Figure 2As shown, the light source device further includes a guide member 50, the power assembly 40 includes a first power member 41, the guide member 50 is arranged between the first power member 41 and the first inlet 331, and the guide member 50 can guide the heat dissipation medium in the installation cavity 11 into the heat dissipation channel 33 through the first inlet 331. Specifically, in this embodiment, the first power member 41 is a fan structure, and the air outlet direction of the first power member 41 is toward the first inlet 331. The first power member 41 can drive the heat dissipation medium to flow and guide the heat dissipation medium in the installation cavity 11 into the heat dissipation channel 33 under the guidance of the guide member 50, and then the heat dissipation medium enters the installation cavity 11 from the heat dissipation channel 33 through the first outlet 332, thereby realizing the flow of the heat dissipation medium between the installation cavity 11 and the heat dissipation channel 33.

[0041] like Figure 1 As shown, the guide member 50 has a guide channel 51, and the cross-sectional area of ​​the guide channel 51 gradually decreases in the direction from the first power member 41 to the first inlet 331. Specifically, the guide member 50 is a thin-walled structure and has a guide channel 51, the upper end of the guide channel 51 is connected to the first inlet 331, and the lower end of the guide channel 51 is connected to the first power member 41, so as to guide the heat dissipation medium; in addition, in the direction from the first power member 41 to the first inlet 331, the cross-sectional area of ​​the guide channel 51 gradually decreases, so that the flow velocity of the heat dissipation medium when entering the heat dissipation channel 33 is relatively large, which enhances the effect of the heat dissipation medium taking away the heat of the screen 31 and the lens 32, and further avoids the situation where the screen 31 and the lens 32 work at high temperatures.

[0042] like Figure 1 As shown, the device base 10 is provided with a first opening 13 connected to the outside, and the first opening 13 is provided on the side of the first power member 41 away from the first inlet 331, and the first power member 41 can introduce the external heat dissipation medium into the heat dissipation channel 33. Specifically, in this embodiment, the device base 10 is a rectangular parallelepiped structure, the guide member 50 is located between the first inlet 331 and the first power member 41, and in the up and down direction, the first inlet 331 is located on the side of the first power member 41 away from the guide member 50, and the first opening 13 is provided on the lower surface of the device base 10. Through the provision of the first opening 13, the first power member 41 can not only drive the heat dissipation medium in the installation cavity 11 to flow into the heat dissipation channel 33, but also drive the external heat dissipation medium to enter and flow into the heat dissipation channel 33 from the first opening 13, so that the external heat dissipation medium with a relatively low temperature can be introduced into the heat dissipation channel 33, thereby ensuring the heat dissipation effect on the screen 31 and the lens 32. In addition, in this embodiment, an openable and closable discharge port is provided on the device base 10, which can be used to discharge the heat dissipation medium in the installation cavity 11, thereby realizing the exchange of the heat dissipation medium with a higher temperature in the installation cavity 11 with the heat dissipation medium with a lower temperature outside.

[0043] like Figure 1 As shown, the first power member 41 has a second inlet 411 and a second outlet 412, the second outlet 412 is arranged opposite to the first inlet 331, and at least part of the second inlet 411 is connected to the installation cavity 11. Specifically, the second inlet 411 is located at the lower end of the first power member 41, and the second inlet 411 is an air inlet; the second outlet 412 is located at the upper end of the first power member 41, and the second outlet 412 is an air outlet; the second outlet 412 is connected to the first inlet 331 through the guide member 50; at least part of the second inlet 411 is connected to the installation cavity 11, so that the heat dissipation medium in the installation cavity 11 can enter the first power member 41 through this part of the second inlet 411, and then enter the heat dissipation channel 33.

[0044] like Figure 1 As shown, the second inlet 411 has a first area 4111 corresponding to the first opening 13 and a second area 4112 communicating with the installation cavity 11, and the light source device further includes a connecting pipe 60 disposed between the first opening 13 and the first power member 41, and the connecting pipe 60 conducts the first opening 13 and the first area 4111. Specifically, the heat dissipation medium in the installation cavity 11 enters the first power member 41 through the second area 4112; the heat dissipation medium from the outside first enters from the first opening 13, and then enters from the first area 4111 to the first power member 41 through the connecting pipe 60; such a configuration enables the heat dissipation medium in the installation cavity 11 and the heat dissipation medium from the outside to enter the first power member 41.

[0045] like Figure 1 As shown, the light source device further includes a filter portion 70 disposed at the first opening 13. Specifically, the filter portion 70 is a filter mesh cotton, and the filter portion 70 is made of high-density filter cotton. The filter portion 70 can filter impurities in the air such as dust, thereby ensuring that the heat dissipation medium entering the heat dissipation channel 33 and the installation cavity 11 contains fewer impurities, so that the staff can clean the impurities in the installation cavity 11 less frequently, thereby reducing the maintenance frequency of the light source device.

[0046] like Figure 1 As shown, the power assembly 40 further includes a second power member 42, which is disposed at the first outlet 332 to guide the heat dissipation medium in the heat dissipation channel 33 into the installation cavity 11 through the first outlet 332. Specifically, the second power member 42 is also a fan structure, the air outlet of the second power member 42 is far away from the first outlet 332, and the air inlet of the second power member 42 is close to the first outlet 332, that is, under the action of the second power member 42, the heat dissipation medium can be accelerated to be discharged from the heat dissipation channel 33 through the first outlet 332, thereby promoting the circulation of the heat dissipation medium between the heat dissipation channel 33 and the installation cavity 11.

[0047] like Figure 1 As shown, the light source device further includes a heat sink 80 connected to the light source 20, and the heat sink 80 includes heat dissipation fins 81, and the heat dissipation fins 81 are located at the outlet of the second power member 42. Specifically, the outlet of the second power member 42 is the air outlet of the second power member 42, and the heat sink 80 can guide the heat generated by the light source 20 during operation to the heat dissipation fins 81, and the second power member 42 can accelerate the air flow rate on the surface of the heat dissipation fins 81, that is, the heat convection on the surface of the heat dissipation fins 81, to take away the heat generated by the light source 20.

[0048] In addition, in this embodiment, the light source device further includes a cooler disposed in the installation cavity 11 for cooling the heat dissipation medium in the installation cavity 11. Specifically, the cooler may be a semiconductor cooling fin, and the cooling effect is achieved by energizing the semiconductor cooling fin.

[0049] It should be noted that, in other embodiments, the heat dissipation medium is a cryogenic liquid, specifically ethylene glycol, acetone, etc., and the first power component is a pressure pump. The pressure pump can pump the cryogenic liquid into the heat dissipation channel and fill the heat dissipation channel with the cryogenic liquid, so that the cryogenic liquid can take away the heat from the screen and the lens. The pressure pump can also accelerate the flow of the cryogenic liquid.

[0050] In addition, if Figure 3 as well as Figure 4 As shown, the present application also provides a second embodiment of a light source device for a 3D printer. Compared with the first embodiment, the second embodiment is different in that: the device base 10 is also a rectangular structure, the first opening 13 is arranged on one of the four side surfaces of the device base 10, the filter portion 70 is arranged in the vertical direction, the air outlet direction of the first power member 41 is arranged in the transverse direction, the guide member 50 has a first port 53 and a second port 54, the axis of the first port 53 extends in the vertical direction and is arranged corresponding to the first inlet 331, the axis of the second port 54 extends in the transverse direction and is arranged corresponding to the first power member 41, the cross-sectional area of ​​the first port 53 is smaller than the cross-sectional area of ​​the second port 54, and "the first opening 13 is arranged on the side of the first power member 41 away from the first inlet 331" refers to that in the transverse direction, the first opening 13 is on the outside of the first power member 41, and the first inlet 331 is on the inside of the first power member. In addition, in this embodiment, the first opening 13 and the first power member 41 are spaced apart. Specifically, the first opening 13 and the second inlet 411 of the first power member 41 are spaced apart and a channel is formed therebetween. The channel is also connected to the installation cavity 11, so that both the external heat dissipation medium and the heat dissipation medium in the installation cavity 11 can enter the first power member 41 through the channel.

[0051] The present application also provides a 3D printer, which includes a light source device, wherein the light source device is the above light source device. The above light source device can effectively solve the problem that the screen in the light source device in the related art is difficult to dissipate heat, and the 3D printer with the above light source device also has the above advantages.

[0052] like Figure 5 As shown, the 3D printer of this embodiment is an LCD light-curing 3D printer, which includes a light source device, a material tray 91, a molding platform 92, a platform mounting structure 93 and a lifting structure 94. The light source device is located below the material tray 91, and the light outlet 12 of the light source device is arranged correspondingly to the bottom of the material tray 91. The molding platform 92 is located above the material tray 91 and is connected to the lifting structure 94 through the platform mounting structure 93. The movement of the lifting structure 94 can drive the molding platform 92 to move closer to or away from the material tray 91. The printing principle of the 3D printer of this embodiment is: using the principle of polarized imaging of the screen 31, the ultraviolet light emitted by the light source 20 passes through the light-transmitting part of the screen 31 and irradiates the photosensitive resin material in the material tray 91, so that this part of the photosensitive resin material is cured at the corresponding position of the molding platform 92, and the opaque part of the screen 31 blocks the ultraviolet light to prevent unnecessary exposure; therefore, by controlling the light-transmitting and opaque parts of the screen 31, a layered cured structure can be printed on the molding platform 92, and then a multi-layered cured structure is stacked to finally form a 3D printed product.

[0053] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A light source device for a 3D printer, characterized in that: include: A device base (10) having a mounting cavity (11), wherein a light outlet (12) is arranged on the device base (10); A light source (20) is arranged in the installation cavity (11); An optical component (30) is arranged on the device base (10), the optical component (30) comprising a screen (31) and a lens (32), the screen (31) being located at the light outlet (12), the lens (32) being arranged in the mounting cavity (11) and being located between the screen (31) and the light source (20), a heat dissipation channel (33) being provided between the screen (31) and the lens (32), the heat dissipation channel (33) having a first inlet (331) and a first outlet (332), at least one of the first inlet (331) and the first outlet (332) being in communication with the mounting cavity (11); A power assembly (40) is arranged on the device base (10), and the power assembly (40) can allow the heat dissipation medium to flow between the installation cavity (11) and the heat dissipation channel (33).

2. The light source device for a 3D printer according to claim 1, characterized in that: The light source device further comprises a flow guide (50), the power assembly (40) comprises a first power member (41), the flow guide (50) is arranged between the first power member (41) and the first inlet (331), and the flow guide (50) is capable of guiding the heat dissipation medium in the installation cavity (11) into the heat dissipation channel (33) through the first inlet (331).

3. The light source device for a 3D printer according to claim 2, characterized in that: The flow guide member (50) has a flow guide channel (51), and in the direction from the first power member (41) to the first inlet (331), the cross-sectional area of ​​the flow guide channel (51) gradually decreases.

4. The light source device for a 3D printer according to claim 2, characterized in that: The device base (10) is provided with a first opening (13) communicating with the outside world. The first opening (13) is provided on a side of the first power member (41) away from the first inlet (331). The first power member (41) can guide the heat dissipation medium from the outside world into the heat dissipation channel (33).

5. The light source device for a 3D printer according to claim 4, characterized in that: The first power member (41) has a second inlet (411) and a second outlet (412); the second outlet (412) is arranged opposite to the first inlet (331); and at least a portion of the second inlet (411) is in communication with the installation cavity (11).

6. The light source device for a 3D printer according to claim 5, characterized in that: The second inlet (411) has a first area (4111) corresponding to the first opening (13) and a second area (4112) communicating with the installation cavity (11); the light source device further comprises a connecting pipe (60) arranged between the first opening (13) and the first power member (41), the connecting pipe (60) connecting the first opening (13) and the first area (4111); and / or, The light source device further comprises a filter portion (70) arranged at the first opening (13).

7. The light source device for a 3D printer according to any one of claims 1 to 6, characterized in that: The optical assembly (30) further comprises a mounting seat (34) arranged at the light outlet (12), the mounting seat (34) having a second opening (341) away from the light source (20) and a third opening (342) close to the light source (20), the screen (31) being arranged at the second opening (341), the lens (32) being arranged at the third opening (342), the heat dissipation channel (33) being formed between the screen (31) and the lens (32), and the first inlet (331) and the first outlet (332) being formed on the mounting seat (34).

8. The light source device for a 3D printer according to claim 7, characterized in that: The optical assembly (30) further comprises a first fastener, the mounting seat (34) has a first step surface (343), the screen (31) abuts against the first step surface (343), and the screen (31) is connected to the mounting seat (34) via the first fastener; and / or, The optical assembly (30) further comprises a second fastener, the mounting seat (34) has a second step surface (344), the lens (32) abuts against the second step surface (344), and the lens (32) is connected to the mounting seat (34) via the second fastener.

9. The light source device for a 3D printer according to any one of claims 1 to 6, characterized in that: The power assembly (40) further comprises a second power member (42), wherein the second power member (42) is arranged at the first outlet (332) to guide the heat dissipation medium in the heat dissipation channel (33) into the installation cavity (11) through the first outlet (332).

10. The light source device for a 3D printer according to claim 9, characterized in that: The light source device further comprises a heat sink (80) connected to the light source (20), the heat sink (80) comprising heat dissipation fins (81), and the heat dissipation fins (81) are located at the outlet of the second power member (42).

11. A 3D printer, comprising a light source device, characterized in that: The light source device is the light source device according to any one of claims 1 to 10.

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