Laser projector and fluorescent wheel assembly thereof

Abstract

The utility model belongs to the technical field of projection equipment, and provides a fluorescent wheel assembly which comprises a fluorescent wheel, a spectroscope and a driving device, the fluorescent wheel is provided with a fluorescent body, and the fluorescent wheel is internally provided with a liquid inlet chamber, a liquid outlet chamber and a communicating flow channel communicating the two chambers; an input connecting end communicated with the liquid inlet chamber and an output connecting end communicated with the liquid outlet chamber are arranged on the fluorescent wheel; a partition plate is arranged between the liquid inlet chamber and the liquid outlet chamber, a flow dividing mechanism located in the liquid inlet chamber is arranged on the partition plate, and the flow dividing mechanism comprises a flow dividing sheet which enables liquid cooling fluid in the liquid inlet chamber to be divided from the center of the partition plate to the periphery; the driving device is used for filling liquid cooling fluid into the fluorescent wheel, and the driving device is connected with the input connecting end and the output connecting end through pipelines; and the pipeline extending into the liquid inlet chamber from the input connecting end is connected with the flow dividing mechanism. The utility model further provides a laser projector with the fluorescent wheel assembly. The problem that the heat dissipation efficiency of a heat dissipation structure of a fluorescent wheel in existing laser projection equipment is low is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of projection equipment, and in particular, relates to a laser projector and a fluorescent wheel assembly thereof. Background Art

[0002] The phosphor wheel (PW for short) is one of the important components of the laser projector light source. The phosphor wheel is generally composed of a motor, a wheel disc and a phosphor. Its function is to stimulate yellow light or green light when the laser emitted by the blue laser hits the phosphor surface of the phosphor wheel, and then passes through the color wheel and is projected onto the display chip (DMD for short) to finally form a picture. Therefore, the phosphor wheel is the first checkpoint in the entire light source system and the first device directly exposed to the laser inside the laser projection device.

[0003] Due to the direct exposure to laser light, the temperature of the fluorescent wheel will rise sharply. When it reaches a certain temperature, the phosphor on the fluorescent wheel will be burned out, thereby losing its original function of stimulating yellow light or blue light, resulting in a lack of yellow light or green light in the entire optical system, so that the projected image will be significantly darker, resulting in adverse effects such as the white field image being blue.

[0004] Laser projectors are sensitive to dust. If dust enters the fluorescent wheel module, the brightness of the image will be reduced, and in severe cases, the fluorescent powder will burn out. Since a sealed environment is required, the current heat dissipation solution for the fluorescent wheel requires first using a radiator to remove the heat generated by the fluorescent wheel in the sealed environment, and then using a cooling fan for heat exchange. This heat exchange method is inefficient and cannot cool the color wheel body. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a laser projector and a fluorescent wheel assembly thereof to solve the technical problem of low heat dissipation efficiency of the heat dissipation structure of the fluorescent wheel inside the laser projection equipment in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: to provide a fluorescent wheel assembly for being arranged on a laser projection device, the fluorescent wheel assembly comprising:

[0007] A fluorescent wheel is provided with a fluorescent body, wherein the interior of the fluorescent wheel has a liquid inlet chamber and a liquid outlet chamber for the flow of liquid cooling fluid, and a plurality of communicating flow channels distributed in an annular manner are provided between the liquid inlet chamber and the liquid outlet chamber; an input connection end and an output connection end are respectively provided on opposite end surfaces of the fluorescent wheel, wherein the input connection end is communicated with the liquid inlet chamber, and the output connection end is communicated with the liquid outlet chamber;

[0008] A partition plate is provided between the liquid inlet chamber and the liquid outlet chamber, and a flow dividing mechanism located in the liquid inlet chamber is provided on the partition plate, and the flow dividing mechanism includes a plurality of flow dividing plates arranged in a spiral radial shape, and the plurality of flow dividing plates enable the liquid cooling fluid entering the liquid inlet chamber to flow from the center of the partition plate to the periphery and reach the connecting flow channel;

[0009] A beam splitter, used to refract designated light onto the phosphor of the phosphor wheel or transmit the designated light;

[0010] A driving device is used to inject liquid cooling fluid into the fluorescent wheel, and the driving device is connected to the input connection end and the output connection end through pipelines; wherein the pipeline extending from the input connection end into the liquid inlet chamber is connected to the diversion mechanism.

[0011] The beneficial effect of the fluorescent wheel assembly provided by the present application is that: compared with the prior art, the driving device of the fluorescent wheel assembly of the present application injects liquid cooling fluid into the fluorescent wheel through a pipeline, and uses the liquid cooling fluid to drive the fluorescent wheel to rotate, so that the fluorescent wheel integrates the liquid cooling function, and can cool down at the same time during the operation of the fluorescent wheel, effectively reducing the working temperature of the fluorescent wheel. Among them, a shunt mechanism is provided in the inner cavity of the fluorescent wheel, and the shunt mechanism is used to guide the liquid cooling fluid injected into the fluorescent wheel from the center of the partition plate to each connecting flow channel close to the inner wall of the liquid inlet chamber through the shunt plate, and then output it to the outside through the liquid outlet chamber. Since the shunt plate in the shunt mechanism is arranged in a spiral radial shape, the liquid cooling fluid flows along the guide of the shunt plate, thereby generating a driving force rotating in a rotation direction, and the driving force drives the fluorescent wheel to rotate. In this way, there is no need to set up a driving mechanism to drive the fluorescent wheel to rotate. Only the injected liquid cooling fluid combined with the shunt mechanism inside the fluorescent wheel can drive the fluorescent wheel to rotate, effectively saving the occupied space and ensuring the normal operation of the fluorescent wheel.

[0012] As for the specific structure of the diversion mechanism, the diversion mechanism also includes a central tube connected to the access pipeline, and the multiple diversion plates are connected to the outer periphery of the central tube, each of the diversion plates is an arc-shaped plate arched in the first rotation direction, and the outer periphery of the central tube is also provided with a diversion port located between two adjacent diversion plates. In this way, the liquid-cooling fluid entering the liquid inlet chamber from the pipeline first reaches the central tube, and then is output from each diversion port on the outer periphery of the central tube, and is diverted and diffused along the diversion plates to the outer periphery of the liquid inlet chamber. In the process of the liquid-cooling fluid flowing along the arc-shaped arched shape and spiral radial structure of each diversion plate, a driving force is generated, thereby driving the fluorescent wheel to rotate.

[0013] In one embodiment, a diversion channel gradually expands from the outer periphery of the central tube toward the inner wall of the liquid inlet chamber between two adjacent diversion plates, and the channel openings of the multiple connecting channels are respectively located on the channel openings of each of the diversion channels, thereby limiting the diversion route, allowing the liquid-cooling fluid entering the liquid inlet chamber from the pipeline to be diverted and synchronously guided to each connecting channel, effectively reducing fluid detours and thereby improving the flow smoothness of the liquid-cooling fluid.

[0014] The structure of the fluorescent wheel is improved, and a first ring ring area for defining the liquid inlet chamber and a second ring ring area for defining the liquid outlet chamber are provided in the fluorescent wheel, and the first ring ring and the second ring ring are respectively enclosed between the partition plate and the inner wall of the fluorescent wheel, and the diameters of the first ring ring and the second ring ring are both smaller than the inner diameter of the fluorescent wheel. In this way, the power unit composed of the diversion mechanism, the liquid inlet chamber and the liquid outlet chamber is concentrated in the central area of ​​the entire fluorescent wheel, avoiding excessive dispersion of the liquid cooling fluid leading to power reduction, and effectively concentrating the power to drive the fluorescent wheel to operate normally.

[0015] In one embodiment, the inner side wall of the liquid outlet chamber has an inclined surface inclined toward the center of the liquid outlet chamber, and the flow channel opening of the connecting flow channel is projected on the inclined surface. The liquid cooling fluid entering the liquid outlet chamber from the connecting flow channel flows to the central area of ​​the liquid outlet chamber through the inclined surface and is output from the output connection end on the central area of ​​the liquid outlet chamber, effectively reducing the fluid detour, thereby improving the flow smoothness of the liquid cooling fluid and ensuring the power stability of driving the fluorescent wheel 100 to rotate.

[0016] In one embodiment, the input connection end and the output connection end are respectively provided with bearings and grooves for mounting the bearings, and the bearings are respectively used to be sleeved on the connecting pipes. This not only improves the smoothness of the rotation of the fluorescent wheel, but also effectively reduces the resistance, making it easier for the fluorescent wheel to be driven to rotate by the internal liquid cooling fluid, and further improving the mobility of the fluorescent wheel.

[0017] In one embodiment, the fluorescent body is arranged around the outer edge of the fluorescent wheel, and the refraction angle of the beam splitter is arranged to match the position of the fluorescent body, so that the light refracted from the beam splitter can accurately reach the fluorescent body of the fluorescent wheel and can receive the light output from the fluorescent body.

[0018] An improvement is made to the structure of the driving device, wherein the driving device is a water pump, wherein the output end of the water pump is connected to the input connection end of the fluorescent wheel through a pipe, and the input end of the water pump is connected to the output connection end of the fluorescent wheel through a pipe, thereby driving the liquid cooling fluid to circulate, continuously providing driving force for the fluorescent wheel, and ensuring the normal operation of the fluorescent wheel.

[0019] Another improvement is made to the structure of the driving device, the driving device is a compressor for cooling the liquid cooling fluid, the output end of the compressor is connected to the input connection end of the fluorescent wheel through a pipeline, and the input end of the compressor is connected to the output connection end of the fluorescent wheel through a pipeline. The liquid cooling fluid flowing in the pipeline is kept at a relatively low temperature to ensure the cooling effect on the fluorescent wheel.

[0020] The present application also provides a laser projector, comprising the above-mentioned fluorescent wheel assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the overall structure of the fluorescent wheel assembly provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the connection state structure of the fluorescent wheel and the driving device provided in an embodiment of the present application;

[0024] Figure 3 Schematic diagram of the internal structure of the fluorescent wheel provided in the embodiment of the present application Figure 1 ;

[0025] Figure 4 Schematic diagram of the internal structure of the fluorescent wheel provided in the embodiment of the present application Figure 2 ;

[0026] Figure 5 A top view of the internal structure of the liquid inlet chamber provided in an embodiment of the present application;

[0027] Figure 6 Schematic diagram of the internal structure of the fluorescent wheel provided in the embodiment of the present application Figure 3 ;

[0028] Figure 7 A schematic diagram of the assembly structure of a bearing installed on a fluorescent wheel provided in an embodiment of the present application.

[0029] Among them, the reference numerals in the figure are:

[0030] 100-fluorescent wheel; 101-fluorescent body; 200-beam splitter; 300-driving device;

[0031] 1-liquid inlet chamber; 11-first enclosure;

[0032] 2-liquid outlet chamber; 21-second enclosure; 22-inclined surface;

[0033] 3-Connecting flow channel;

[0034] 4- Input connection terminal;

[0035] 5- output connection terminal;

[0036] 6-Separator;

[0037] 7-diverter mechanism; 71-diverter plate; 72-center tube; 721-diverter port; 73-diverter channel;

[0038] 8-Bearing;

[0039] 9- Grooves. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] The phosphor wheel is the first checkpoint in the entire light source system of the laser projection device, and is also the first device to be directly exposed to the laser inside the laser projection device. Due to the direct exposure to the laser, the temperature of the phosphor wheel will rise sharply. When it reaches a certain temperature, the phosphor on the phosphor wheel will be burned out, thus losing its original function of stimulating yellow light or blue light, resulting in the lack of yellow light or green light in the entire optical system, making the projected image significantly darker, resulting in adverse effects such as the white field image being blue.

[0045] In actual applications, since the optical components in the laser projection equipment need to be set in a sealed environment, the current heat dissipation solution for the fluorescent wheel needs to first use a radiator to remove the heat generated by the fluorescent wheel in the sealed environment, and then use a cooling fan for heat exchange. This heat exchange method is inefficient and cannot cool the color wheel body.

[0046] Here, the embodiment of the present application provides a new type of laser projector and its fluorescent wheel assembly, which changes the above-mentioned traditional heat dissipation solution and integrates a liquid cooling structure into the fluorescent wheel, effectively improves the cooling effect, and solves the technical problem of low heat dissipation efficiency of the heat dissipation structure of the fluorescent wheel inside the traditional laser projection equipment. It is now described in detail.

[0047] Please also read Figure 1 and Figure 2 A laser projector has a fluorescent wheel assembly of the present application, and the fluorescent wheel assembly includes a fluorescent wheel 100, a beam splitter 200 and a driving device 300.

[0048] The fluorescent wheel 100 is provided with a fluorescent body 101, and the fluorescent body 101 can change the color of the received light and reflect the changed light for output.

[0049] The beam splitter 200 is used to refract the specified light to the fluorescent body 101 of the fluorescent wheel 100, or transmit the specified light. In practical applications, it is necessary to coat a light-transmitting film of a specified color on the surface of the beam splitter 200. As an example, Figure 1 As shown, blue light is input to the beam splitter 200, part of the blue light is transmitted and enters the next optical processing, and the blue light that is not transmitted is refracted by the beam splitter 200 to the phosphor 101 of the phosphor wheel 100, and the phosphor 101 converts the blue light into yellow light and outputs it to the beam splitter 200, and then transmitted through the beam splitter 200 for application.

[0050] Please also read Figure 2 and Figure 3The interior of the fluorescent wheel 100 has a liquid inlet chamber 1 and a liquid outlet chamber 2 for the flow of liquid cooling fluid, and a plurality of annularly distributed connecting flow channels 3 are arranged between the liquid inlet chamber 1 and the liquid outlet chamber 2. The plurality of connecting flow channels 3 are arranged close to the inner side walls of the liquid inlet chamber 1 and the liquid outlet chamber 2 so that the connecting flow channels 3 are away from the central area of ​​the fluorescent wheel 100.

[0051] An input connection terminal 4 and an output connection terminal 5 are respectively provided on opposite end surfaces of the fluorescent wheel 100. The input connection terminal 4 is connected to the liquid inlet chamber 1, and the output connection terminal 5 is connected to the liquid outlet chamber 2. Figure 3 As shown in the direction of the arrow in the figure, the liquid cooling fluid can enter the liquid inlet chamber 1 through the access pipe G on the input connection end 4, then flow to the liquid outlet chamber 2 through the connecting channel 3, and then flow out from the output pipe G on the output connection end 5.

[0052] The driving device 300 is used to inject liquid cooling fluid into the interior of the fluorescent wheel 100. The driving device 300 is connected to the input connection terminal 4 and the output connection terminal 5 on the fluorescent wheel 100 through the pipeline G, thereby forming a circulation channel. The liquid cooling fluid can be a dedicated coolant, cold water, or a refrigerated refrigerated airflow, etc., which is not specifically limited here.

[0053] Please also read Figure 3 and Figure 4 There is a partition plate 6 between the liquid inlet chamber 1 and the liquid outlet chamber 2, and a flow dividing mechanism 7 is provided on the partition plate 6 and is located in the liquid inlet chamber 1. The pipe G connected from the output end of the driving device 300 extends from the input connection end 4 of the fluorescent wheel 100 into the liquid inlet chamber 1 and is connected to the flow dividing mechanism 7.

[0054] like Figure 4 As shown, the flow dividing mechanism 7 includes a plurality of flow dividing plates 71 arranged in a spiral radial shape, and the plurality of flow dividing plates 71 are used to allow the liquid cooling fluid entering the liquid inlet chamber 1 to flow from the center of the partition plate 6 to the periphery, and enter the liquid outlet chamber 2 through the connecting flow channel 3, and be output from the pipe G connected to the output connection end 5. In this way, the driving force generated during the flow of the liquid cooling fluid is used to drive the fluorescent wheel 100 to rotate.

[0055] Compared with the prior art, the fluorescent wheel 100 assembly provided in the embodiment of the present application has a driving device 300 that injects liquid cooling fluid into the fluorescent wheel 100 through a pipe G, and uses the liquid cooling fluid to drive the fluorescent wheel 100 to rotate, so that the fluorescent wheel 100 is integrated with a liquid cooling function. During the operation of the fluorescent wheel 100, the temperature can be reduced at the same time, thereby effectively reducing the operating temperature of the fluorescent wheel 100 and preventing the fluorescent body 101 on the fluorescent wheel 100 from overheating and burning.

[0056] Specifically, the inner cavity of the fluorescent wheel 100 has a liquid inlet chamber 1 and a liquid outlet chamber 2 which are separated by a partition plate 6 and are independently arranged, and a connecting flow channel 3 is provided between the two. The liquid cooling fluid entering the liquid inlet chamber 1 from the access pipe G on the input connection end 4 can be guided to the liquid outlet chamber 2 through the connecting flow channel 3, and then output from the pipe G connected to the output connection end 5, thereby forming a one-way flow channel.

[0057] The partition plate 6 is provided with a flow dividing mechanism 7 located in the liquid inlet chamber 1, and the flow dividing mechanism 7 is arranged in the central area of ​​the entire fluorescent wheel 100. The pipeline G connected from the driving device 300 extends from the input connection end 4 of the fluorescent wheel 100 into the liquid inlet chamber 1 and is directly connected to the flow dividing mechanism 7. The flow dividing mechanism 7 at least includes a plurality of flow dividing plates 71 extending outward from the center of the partition plate 6, so that the liquid cooling fluid input into the liquid inlet chamber 1 flows from the center of the partition plate 6 through the flow dividing plates 71 to each connecting flow channel 3 away from the central area of ​​the partition plate 6, and enters the liquid outlet chamber 2 through the connecting flow channel 3, and then is output from the pipeline G of the output connection end 5 through the liquid outlet chamber 2.

[0058] Since the flow dividing plates 71 in the flow dividing mechanism 7 are arranged in a spiral radial shape, the liquid cooling fluid flows along the guide of the flow dividing plates 71, thereby generating a driving force rotating in one direction, and the driving force drives the fluorescent wheel 100 to rotate.

[0059] It can be seen that the fluorescent wheel 100 provided in the embodiment of the present application does not need to be provided with driving components such as a motor and a wheel. The fluorescent wheel 100 can be driven to rotate by itself only by using the injected liquid cooling fluid combined with the diversion mechanism 7 inside the fluorescent wheel 100, which effectively saves the occupied space and ensures the normal operation of the fluorescent wheel 100.

[0060] In the embodiments of this application, please refer to Figure 1 and Figure 2 The fluorescent body 101 is arranged around the outer edge of the fluorescent wheel 100 , and the refraction angle of the beam splitter 200 is arranged to match the position of the fluorescent body 101 .

[0061] As an example, Figure 1 As shown, the angle a of the beam splitter 200 refracting the light onto the phosphor 101 can be preferably set to 90 degrees, so that the light that is not transmitted on the input beam splitter 200 can be accurately refracted by the beam splitter 200 onto the phosphor 101 on the outer edge of the fluorescent wheel 100.

[0062] It should be noted that different laser projectors have different internal layouts, resulting in differences in the position settings and refraction angle settings between the fluorescent wheel 100 and the beam splitter 200. The specific settings need to be determined according to the specific model and specific internal layout, and are not specifically limited here.

[0063] In addition, if Figure 1 and Figure 2 As shown, since the light refracted by the beam splitter 200 toward the fluorescent wheel 100 falls on the fluorescent body 101 on one side edge of the fluorescent wheel 100, it forms an avoidance arrangement with the connecting pipe G connected to the fluorescent wheel 100, so that the light between the beam splitter 200 and the fluorescent wheel 100 is not blocked by the connecting pipe G, effectively ensuring the output effect of the light.

[0064] For the specific structure of the diversion mechanism 7, please refer to Figure 3 , Figure 4 and Figure 5 The diversion mechanism 7 also includes a central tube 72 connected to the access pipe G, and the central tube 72 is connected to the access pipe G extending from the input connection end 4 of the fluorescent wheel 100 into the liquid inlet chamber 1, so that the liquid-cooling fluid entering the liquid inlet chamber 1 reaches the central tube 72 first.

[0065] like Figure 4 and Figure 5 As shown, the plurality of diverter plates 71 are connected to the outer periphery of the central tube 72 , and each diverter plate 71 is an arc-shaped plate arched toward the first rotation direction F. A diverter port 721 located between two adjacent diverter plates 71 is also provided on the outer periphery of the central tube 72 .

[0066] The first rotation direction F can be understood as a clockwise or counterclockwise direction, and the plurality of diverter sheets 71 are arc-shaped sheets connected to the outer periphery of the central tube 72 in a clockwise or counterclockwise direction, thereby forming a spirally radiating diverter structure.

[0067] Please combine Figure 3 , Figure 4 and Figure 5 The liquid-cooling fluid entering the liquid inlet chamber 1 from the pipe G first reaches the central tube 72, and then is output from the various diversion ports 721 on the outer periphery of the central tube 72, and is diverted and diffused along the diversion plate 71 to the connecting flow channel 3 away from the center of the partition plate 6, and then enters the liquid outlet chamber 2 through the various connecting flow channels 3, and is then output from the pipe G on the input connection end 4.

[0068] Thus, under the guidance of the flow dividing mechanism 7 composed of the central tube 72 and the flow dividing plates 71 , the liquid cooling fluid generates a driving force in the process of flowing along the arc-shaped arched shape and the spiral radial structure of each flow dividing plate 71 , thereby driving the fluorescent wheel 100 to rotate.

[0069] In the examples of this application, please refer to Figure 5 Between two adjacent diverter sheets 71 there is a diverter channel 73 which gradually expands from the outer periphery of the central tube 72 toward the inner side wall of the liquid inlet chamber 1 , and the channel openings of the multiple connecting channels 3 are respectively located at the channel openings of each diverter channel 73 .

[0070] In this way, the liquid-cooling fluid output from the diversion port 721 on the central tube 72 is limited in its diversion direction by the diversion plates 71 on both sides, and flows along the diversion channel 73 to the corresponding connecting flow channel 3, thereby effectively avoiding the liquid-cooling fluid from making detours during the diversion process, thereby improving the smoothness of the fluid flow inside the fluorescent wheel 100, and ensuring the power stability that drives the fluorescent wheel 100 to operate.

[0071] For the internal structure of the fluorescent wheel 100, please refer to the embodiment of the present application. Figure 6 The fluorescent wheel 100 is provided with a first enclosure 11 and a second enclosure 21. The first enclosure 11 is used to define the annular area of ​​the liquid inlet chamber 1, and the second enclosure 21 is used to define the annular area of ​​the liquid outlet chamber 2. The first enclosure 11 and the second enclosure 21 are respectively enclosed between the partition plate 6 and the inner wall of the fluorescent wheel 100. In this embodiment, the first enclosure 11 is enclosed between the end surface of one side of the partition plate 6 and the inner wall of the fluorescent wheel 100 having the input connection terminal 4, and the second enclosure 21 is enclosed between the end surface of the other side of the partition plate 6 and the inner wall of the fluorescent wheel 100 having the output connection terminal 5, thereby forming two closed chambers located inside the fluorescent wheel 100.

[0072] Among them, Figure 3 , Figure 4 and Figure 6 As shown, the diameter L1 of the first circle 11 and the second circle 21 are both smaller than the inner diameter L2 of the fluorescent wheel 100, so that the power unit composed of the diversion mechanism 7, the liquid inlet chamber 1 and the liquid outlet chamber 2 is concentrated in the central area of ​​the entire fluorescent wheel 100, avoiding excessive dispersion of the liquid cooling fluid resulting in power weakening and loss, and effectively concentrating the power to drive the fluorescent wheel 100 to operate normally.

[0073] In one embodiment of the present application, see Figure 6 The inner wall of the liquid outlet chamber 2 has an inclined surface 22 inclined toward the center of the liquid outlet chamber 2 , and the projection of the flow channel opening of the communicating flow channel 3 is located on the inclined surface 22 .

[0074] In this way, by utilizing the inclined surface 22 on the inner wall of the liquid inlet chamber 1, the liquid-cooling fluid flowing into the liquid outlet chamber 2 from each connecting flow channel 3 can flow to the central area of ​​the liquid outlet chamber 2, and converge at the output connecting end 5 in the central area to be output through the pipe G, thereby effectively limiting the flow direction of the liquid-cooling fluid, avoiding detours of the liquid-cooling fluid during the flow process, and thereby improving the flow smoothness of the liquid-cooling fluid, thereby ensuring the power stability for driving the fluorescent wheel 100 to rotate.

[0075] In the embodiments of this application, please refer to Figure 6 and Figure 7 A bearing 8 and a groove 9 for mounting the bearing 8 are respectively provided on the input connection end 4 and the output connection end 5, and the bearing 8 is respectively used to be sleeved on the connecting pipe G.

[0076] On the one hand, bearings 8 are installed on the input connection end 4 and the output connection end 5 respectively, which effectively improves the smoothness of the rotation of the fluorescent wheel 100. On the other hand, the movable cooperation of the bearing 8 is conducive to reducing resistance, making it easier for the fluorescent wheel 100 to be driven and rotated by the internal liquid cooling fluid, further improving the mobility of the fluorescent wheel 100.

[0077] The structure of the driving device 300 includes but is not limited to the following forms.

[0078] In one embodiment of the present application, please refer to Figure 2 and Figure 3 The driving device 300 is preferably a water pump, which has at least an output end and an input end. The output end of the water pump is connected to the input connection end 4 on the fluorescent wheel 100 through a pipe G, and the input end of the water pump is connected to the output connection end 5 on the fluorescent wheel 100 through a pipe G, thereby driving the liquid cooling fluid to circulate, continuously providing driving force for the fluorescent wheel 100, and ensuring the normal operation of the fluorescent wheel 100.

[0079] In another embodiment of the present application, please refer to Figure 2 and Figure 3 The driving device 300 is preferably a compressor capable of cooling the liquid cooling fluid, and the compressor can be a refrigeration compression device similar to that on an air conditioner. Considering the limited installation space, a small compressor with smaller specifications can be preferably used.

[0080] The compressor has at least an output end and an input end. The output end of the compressor is connected to the input connection end 4 of the fluorescent wheel 100 through a pipe G, and the input end of the compressor is connected to the output connection end 5 of the fluorescent wheel 100 through a pipe G. The liquid cooling fluid flowing in the pipe G is kept at a relatively low temperature to ensure a cooling effect on the fluorescent wheel 100.

[0081] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fluorescent wheel assembly, used for being arranged on a laser projection device, characterized in that: The fluorescent wheel assembly comprises: A fluorescent wheel is provided with a fluorescent body, wherein the interior of the fluorescent wheel has a liquid inlet chamber and a liquid outlet chamber for the flow of liquid cooling fluid, and a plurality of communicating flow channels distributed in an annular manner are provided between the liquid inlet chamber and the liquid outlet chamber; an input connection end and an output connection end are respectively provided on opposite end surfaces of the fluorescent wheel, wherein the input connection end is communicated with the liquid inlet chamber, and the output connection end is communicated with the liquid outlet chamber; A partition plate is provided between the liquid inlet chamber and the liquid outlet chamber, and a flow dividing mechanism located in the liquid inlet chamber is provided on the partition plate, and the flow dividing mechanism includes a plurality of flow dividing plates arranged in a spiral radial shape, and the plurality of flow dividing plates enable the liquid cooling fluid entering the liquid inlet chamber to flow from the center of the partition plate to the periphery and reach the connecting flow channel; A beam splitter, used to refract designated light onto the phosphor of the phosphor wheel or transmit the designated light; A driving device is used to inject liquid cooling fluid into the fluorescent wheel, and the driving device is connected to the input connection end and the output connection end through pipelines; wherein the pipeline extending from the input connection end into the liquid inlet chamber is connected to the diversion mechanism.

2. The fluorescent wheel assembly according to claim 1, characterized in that: The diversion mechanism also includes a central tube connected to the access pipeline, and the multiple diversion plates are connected to the outer circumference of the central tube. Each of the diversion plates is an arc-shaped plate arched in the first rotation direction. The outer circumference of the central tube is also provided with a diversion port located between two adjacent diversion plates.

3. The fluorescent wheel assembly according to claim 2, characterized in that: A diversion channel which gradually expands from the outer periphery of the central tube toward the inner wall of the liquid inlet chamber is provided between two adjacent diversion plates, and the channel openings of the multiple connecting flow channels are respectively located at the channel openings of each of the diversion channels.

4. The fluorescent wheel assembly according to claim 1, characterized in that: A first ring for limiting the annular area of ​​the liquid inlet chamber and a second ring for limiting the annular area of ​​the liquid outlet chamber are provided in the fluorescent wheel. The first ring and the second ring are respectively enclosed between the partition plate and the inner wall of the fluorescent wheel. The diameters of the first ring and the second ring are both smaller than the inner diameter of the fluorescent wheel.

5. The fluorescent wheel assembly according to claim 1, characterized in that: The inner side wall of the liquid outlet chamber is provided with an inclined surface inclined toward the center of the liquid outlet chamber, and the flow channel opening of the communicating flow channel is projected on the inclined surface.

6. The fluorescent wheel assembly according to claim 1, characterized in that: The input connection end and the output connection end are respectively provided with bearings and grooves for installing the bearings, and the bearings are respectively used for sleeve connection on the connecting pipes.

7. The fluorescent wheel assembly according to claim 1, characterized in that: The fluorescent body is arranged around the outer edge of the fluorescent wheel, and the refraction angle of the beam splitter is arranged to match the position of the fluorescent body.

8. The fluorescent wheel assembly according to any one of claims 1 to 7, characterized in that: The driving device is a water pump, the output end of the water pump is connected to the input connection end of the fluorescent wheel through a pipeline, and the input end of the water pump is connected to the output connection end of the fluorescent wheel through a pipeline.

9. The fluorescent wheel assembly according to any one of claims 1 to 7, characterized in that: The driving device is a compressor for cooling the liquid cooling fluid, the output end of the compressor is connected to the input connection end of the fluorescent wheel through a pipeline, and the input end of the compressor is connected to the output connection end of the fluorescent wheel through a pipeline.

10. A laser projector, characterized in that: The invention comprises a fluorescent wheel assembly as claimed in any one of claims 1 to 9.

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