Projection equipment and heat dissipation method and device of projection equipment

Abstract

The invention discloses projection equipment and a heat dissipation method and device of the projection equipment, and belongs to the technical field of projection. The heat dissipation device in the projection equipment comprises at least one of a liquid cooling assembly and a heat dissipation fan, and the projection equipment further comprises a heat recovery assembly. In this way, the electronic device in the projection equipment is cooled, heat generated by the electronic device is recycled for reutilization, and the electric energy utilization efficiency of the projection equipment is improved. On the basis that the heat dissipation device comprises the heat dissipation fan, the heat dissipation method is used for detecting the current working temperature of the electronic device, prompt information is sent to a user after it is detected that the current working temperature is larger than the temperature range corresponding to the current operation gear of the heat dissipation fan, and the user autonomously decides the operation gear of the heat dissipation fan according to personal requirements; therefore, the heat dissipation efficiency and the working noise of the heat dissipation fan are flexibly adjusted according to the decision of a user, and the noise generated by the projection equipment is ensured to be within an acceptable range of the user while heat dissipation is performed.

Description

Projection equipment, heat dissipation method and device for projection equipment

[0001] This application claims priority to Chinese patent application No. 202310240403.2 filed on March 13, 2023, entitled “Heat dissipation method and device, and storage medium for laser projection equipment”, and priority to Chinese patent application No. 202310279970.9 filed on March 21, 2023, entitled “Projection equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of projection technology, and in particular to a projection device, a heat dissipation method and a device for the projection device. Background Art

[0003] Projection devices are now widely used in daily life. However, during operation, electronic components such as the light source and circuit boards within these devices generate a significant amount of heat, which can severely impact the device's performance and lifespan. Therefore, cooling the electronic components within these devices is essential.

[0004] Summary of the Invention

[0005] This application provides a projection device, a heat dissipation method, and a device for the projection device. These methods can simultaneously cool the electronic components within the projection device and recover the heat energy generated by the electronic components for reuse, thereby improving the power efficiency of the projection device. Furthermore, the noise of the heat dissipation device can be reduced or kept within a user-acceptable range, thereby improving the overall projection quality of the projection device.

[0006] In a first aspect, a projection device is provided, the projection device comprising an electronic device, a heat dissipation device, and a heat recovery component, the heat dissipation device comprising at least one of a liquid cooling component and a heat dissipation fan;

[0007] The liquid cooling assembly includes a circulation pipeline, the circulation pipeline is in contact with the electronic device, and the circulation pipeline is used to collect heat energy generated by the electronic device;

[0008] The air outlet surface of the heat dissipation fan faces the electronic device;

[0009] The heat recovery component is located on the dissipation path of the heat energy generated by the electronic device and is used to collect the heat energy generated by the electronic device.

[0010] In a second aspect, a heat dissipation method for a projection device is provided, wherein the projection device is the projection device of the first aspect, and the heat dissipation device of the projection device includes at least a heat dissipation fan for dissipating heat for electronic components in the projection device; the method includes:

[0011] After the projection device is in an operating state, obtaining a current operating temperature of the electronic component and a current operating gear position of the cooling fan;

[0012] If it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear, a prompt message is issued, wherein the prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating gear;

[0013] After receiving the adjustment instruction triggered by the user, the operating gear of the cooling fan is adjusted to a target operating gear, where the target operating gear is greater than or equal to the current operating gear of the cooling fan.

[0014] In a third aspect, a projection device is provided. The projection device is the projection device of the first aspect, wherein the heat dissipation device of the projection device includes at least a heat dissipation fan for dissipating heat from electronic components in the projection device. The projection device also includes a processor; the processor is configured to:

[0015] After the projection device is in an operating state, obtaining a current operating temperature of the electronic component and a current operating gear position of the cooling fan;

[0016] If it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear, a prompt message is issued, wherein the prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating gear;

[0017] After receiving the adjustment instruction triggered by the user, the operating gear of the cooling fan is adjusted to a target operating gear, where the target operating gear is greater than or equal to the current operating gear of the cooling fan.

[0018] In a fourth aspect, a projection device is provided, the projection device comprising:

[0019] an acquisition module, configured to acquire, after the projection device is in operation, a current operating temperature of an electronic component in the projection device and a current operating position of a cooling fan in the projection device, the cooling fan being configured to dissipate heat for the electronic component;

[0020] a sending module, configured to send a prompt message if it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear, wherein the prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating gear;

[0021] The adjustment module is configured to adjust the operating gear of the cooling fan to a target operating gear after receiving the adjustment instruction triggered by the user, where the target operating gear is greater than or equal to the current operating gear of the cooling fan.

[0022] In a fifth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the heat dissipation method of the projection device provided in the second aspect above.

[0023] In a sixth aspect, a computer program product is provided, wherein the computer program product includes program instructions, and when the program instructions are executed by a processor, the heat dissipation method of the projection device provided in the second aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 any creative work.

[0025] FIG1 is a schematic structural diagram of a projection device provided in an embodiment of the present application;

[0026] FIG2 is a schematic structural diagram of a circulation pipeline and a heat exchange unit provided in an embodiment of the present application;

[0027] FIG3 is a schematic diagram of the cross-sectional structure of the heat exchange unit shown in FIG2 along the A1-A2 position;

[0028] FIG4 is a schematic structural diagram of another circulation pipeline and heat exchange unit provided in an embodiment of the present application;

[0029] FIG5 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0030] FIG6 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0031] FIG7 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0032] FIG8 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0033] FIG9 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0034] FIG10 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0035] FIG11 is a schematic diagram of a driving current of a first circulating pump provided in an embodiment of the present application;

[0036] FIG12 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0037] FIG13 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0038] FIG14 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0039] FIG15 is a schematic structural diagram of another projection device provided in an embodiment of the present application;

[0040] FIG16 is a schematic structural diagram of a laser projection device involved in a heat dissipation method for a laser projection device provided in an embodiment of the present application;

[0041] FIG17 is a structural block diagram of another laser projection device provided in an embodiment of the present application;

[0042] FIG18 is a flowchart of a method for driving a projection device provided in an embodiment of the present application;

[0043] FIG19 is a flow chart of a heat dissipation method for a laser projection device provided in an embodiment of the present application;

[0044] FIG20 is a flow chart of another heat dissipation method for a laser projection device provided in an embodiment of the present application;

[0045] FIG21 is a schematic diagram of a prompt box provided in an embodiment of the present application;

[0046] FIG22 is a block diagram of another projection device provided in an embodiment of the present application;

[0047] FIG23 is a block diagram of another projection device provided in an embodiment of the present application;

[0048] FIG24 is a schematic diagram of an automatic adjustment module provided in an embodiment of the present application;

[0049] FIG25 is a block diagram of another projection device provided in an embodiment of the present application.

[0050] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0052] With the continuous development of science and technology, projection equipment is increasingly used in people's work and life. A projection device is a device that can project images or videos onto a screen. Taking laser projection equipment as an example, at present, laser projection equipment mainly includes an equipment housing, and electronic devices such as a light source unit, a circuit board, and an optical lighting system fixed in the equipment housing. Among them, the light source unit includes a light source assembly, and the optical lighting system includes an optical path unit, etc. The laser projection equipment usually also includes a lens. Among them, the light source assembly is used to provide a laser beam to the optical lighting system through a laser, and the optical lighting system is used to receive the laser beam provided by the light source assembly, and modulate the received laser beam to obtain a modulated beam, and then emit the modulated beam to the lens. The lens is used to receive the modulated beam from the optical lighting system, and project the modulated beam to obtain a projection image.

[0053] Here, the laser generates a large amount of heat in the process of providing a laser beam to the optical machine lighting system, resulting in a high temperature of the laser, which in turn leads to poor quality of the laser beam provided by the laser, resulting in poor quality of the projection image projected by the laser projection device. In addition, other electronic components in the laser projection device besides the light source assembly may also generate some heat. That is, during the operation of a projection device such as a laser projector, electronic components such as the light source unit and circuit board generate a large amount of heat, and this heat will seriously affect the working state and service life of the projection device.

[0054] In the related art, in order to dissipate the heat generated by the operation of the projection device, it is usually necessary to install a heat dissipation device within the projection device, and the heat dissipation device includes a heat dissipation fan. The projection device dissipates the heat generated by the projection device into the air in a timely manner through the rotation of the heat dissipation fan. Generally, the projection device may include a device housing, a heating element located within the device housing, and a heat dissipation fan. The device housing has a vent, and the heat dissipation fan is located at the vent. The high-speed rotation of the heat dissipation fan blades drives the air flow within the device housing, allowing cold air outside the device housing to enter the interior of the device housing, thereby enabling heat exchange between the space inside and outside the device housing, and cooling the heating element within the device housing through heat exchange of the airflow.

[0055] Some projection devices are also equipped with a temperature sensor, which can detect the operating temperature of the heating element (such as a laser) through the temperature sensor. When the operating temperature of the heating element is high, the projection device controls the cooling fan to turn on to dissipate the heat generated by the heating element.

[0056] However, this heat actually comes from the projector's electrical energy, which the cooling fan dissipates into the external environment, resulting in low energy efficiency. Furthermore, when the projector's operating temperature is too high, the cooling fan's speed increases, causing the fan to generate a lot of noise during operation. This, in turn, results in a noisy operation of the projector and a poor user experience.

[0057] The embodiments of the present application provide a projection device, a heat dissipation method and apparatus for the projection device, which can solve the problems in the above-mentioned related technologies, namely, can improve the power utilization efficiency of the projection device and reduce the operating noise of the projection device.

[0058] In an embodiment of the present application, a projection device includes electronic components, a heat sink, and a heat recovery assembly. The heat sink includes at least one of a liquid cooling assembly and a cooling fan. The liquid cooling assembly includes a circulation line that contacts the electronic components and is used to collect heat energy generated by the electronic components. The cooling fan's air outlet faces the electronic components. The heat recovery assembly is located in the heat energy dissipation path of the electronic components and is used to collect the heat energy generated by the electronic components.

[0059] FIG1 is a schematic diagram of the structure of a projection device 10 provided in an embodiment of the present application. Please refer to FIG1 . The projection device 10 may include an electronic device 11, a liquid cooling component 12, and a heat recovery component 13. It should be noted that FIG1 shows a situation where two electronic devices 11 are located in one projection device 10. In actual application, the number of electronic devices 11 can be determined according to the model of the projection device 10. For example, the projection device 10 may also include one electronic device 11 or three electronic devices 11. This embodiment of the present application does not limit this. The projection device 10 may be a device driven by electrical energy.

[0060] In some embodiments, the electronic device 11 includes a light source assembly, which includes a laser or other light-emitting device. One or more electronic devices 11 in the projection device 10 may generate heat energy when in operation.

[0061] The liquid cooling assembly 12 may include a circulation line 121, which may be in contact with the electronic device 11 and is used to collect heat energy generated by the electronic device 11. In this way, the heat generated by the electronic device 11 during operation can be transferred to the circulation line 121, and the circulation line 121 can cool the electronic device 11 to ensure normal operation of the electronic device 11.

[0062] In some embodiments, the heat recovery assembly 13 may include a connected heat exchange unit 131 and a recovery unit 132. The heat exchange unit 131 may be connected to the circulation pipeline 121 and capable of performing heat exchange with the circulation pipeline 121. The recovery unit 132 may be used to collect heat energy from the heat exchange unit 131. The heat exchange unit 131 is used to obtain heat from the circulation pipeline 121. That is, the circulation pipeline 121 may be used to transfer heat generated by the electronic device 11 to the heat exchange unit 131. The heat exchange unit 131 may store heat in the circulation pipeline 121 and transfer the heat to the recovery unit 132. The recovery unit 132 may reuse the collected heat. In this way, the heat discharged to the external environment in the related art can be recovered for energy, thereby improving the power utilization efficiency of the projection device 10.

[0063] Figure 2 is a schematic structural diagram of a circulation pipeline 121 and a heat exchange unit 131 provided in an embodiment of the present application, and Figure 3 is a schematic cross-sectional structural diagram of the heat exchange unit 131 shown in Figure 2 along the A1-A2 position. Please refer to Figures 2 and 3. In some embodiments, the heat exchange unit 131 may include a heat exchange water tank 1311 and a first liquid medium 1312 located in the heat exchange water tank 1311. The heat exchange water tank 1311 may be connected to the recovery unit 132. The circulation pipeline 121 may include a heat conduction pipe 1211 and a second liquid medium 1212. The second liquid medium 1212 may be located in the heat conduction pipe 1211. A portion of the heat conduction pipe 1211 may be located in the heat exchange water tank 1311 and may be capable of heat exchange with the first liquid medium 1312.

[0064] The heat exchange water tank 1311 may have a third chamber, and the first liquid medium 1312 may be located in the third chamber. The heat exchange water tank 1311 may have a first connecting hole b1 and a second connecting hole b2, so that the heat conduction pipe 1211 can be connected to the heat exchange water tank 1311 through the first connecting hole b1 and the second connecting hole b2. The heat conduction pipe 1211 can extend into the third chamber of the heat exchange water tank 1311 through the first connecting hole b1 and the second connecting hole b2, so that at least a portion of the heat conduction pipe 1211 can be located in the third chamber. In this way, the heat-conducting pipe 1211 can contact the first liquid medium 1312 in the third chamber, and the first liquid medium 1312 can surround the heat-conducting pipe 1211, so that the first liquid medium 1312 can exchange heat with the second liquid medium 1212 in the heat-conducting pipe 1211. The contact area between the first liquid medium 1312 and the heat-conducting pipe can also be made larger to increase the heat exchange area between the first liquid medium 1312 and the second liquid medium 1212, thereby improving the heat transfer efficiency between the circulation pipeline 121 and the heat exchange unit 131, and thereby improving the cooling efficiency of the liquid cooling component 12 including the circulation pipeline 121 on the electronic device 11.

[0065] The heat conducting pipe 1211 may be made of a heat conducting material, such as a metal, so that the second liquid medium 1212 in the circulation pipe 121 can exchange heat with the first liquid medium 1312 in the heat exchange water tank 1311 through the heat conducting pipe 1211. In some embodiments, the second liquid medium 1212 may include at least one of tap water, purified water, or an antifreeze solution (such as an ethylene glycol aqueous solution).

[0066] As shown in FIG3 , the heat exchange water tank 1311 may include an upper housing d1 and a lower housing d2. The upper housing d1 and the lower housing d2 may enclose a third chamber of the heat exchange water tank 1311, with the lower housing d2 located on the side of the upper housing d1 closer to the ground. Since the density of water in the third chamber typically decreases with increasing temperature, i.e., hot water is at the top and cold water is at the bottom, the temperature of the water in the lower housing d2 may be lower than that of the water in the upper housing d1. At least a portion of the heat transfer pipe 1211 may be located in the lower housing d2, thereby lowering the temperature of the first liquid medium 1312 (e.g., water) flowing out of the heat transfer pipe, thereby improving the heat exchange efficiency between the second liquid medium 1212 and the first liquid medium 1312 in the heat transfer pipe 1211.

[0067] FIG4 is a schematic diagram of the structure of another circulation pipeline 121 and heat exchange unit 131 provided in an embodiment of the present application. Referring to FIG4 , at least a portion of the heat conduction pipe 1211 can be curved, and the first liquid medium 1312 can cover the curved heat conduction pipe 1211. The curved heat conduction pipe 1211 can increase the contact area between the first liquid medium 1312 and the heat conduction pipe 1211, thereby increasing the heat exchange area between the first liquid medium 1312 and the second liquid medium 1212. This can further improve the heat transfer efficiency between the circulation pipeline 121 and the heat exchange unit 131, thereby improving the cooling efficiency of the liquid cooling assembly 12 including the circulation pipeline 121 on the electronic device 11.

[0068] Furthermore, the liquid first liquid medium 1312 can have a good thermal convection effect, resulting in a good thermal conductivity efficiency. Thus, by enveloping at least a portion of the circulation pipe 121 with the first liquid medium 1312, the heat transfer efficiency of the first liquid medium 1312 is higher than that of the related art, which uses air convection to dissipate heat from the circulation pipe 121. This allows for faster cooling of the circulation pipe 121 and the electronic device 11. In some embodiments, the first liquid medium 1312 can include tap water or purified water.

[0069] FIG5 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application. Referring to FIG5 , in some embodiments, the heat exchange water tank 1311 may include a heat exchanger 1313 and a first water storage tank 1314. The first liquid medium 1312 may be located in the first water storage tank 1314. The heat exchanger 1313 may be connected to the first water storage tank 1314, and the first water storage tank 1314 may be connected to the recovery unit 132. The heat conduction pipe 1211 may be connected to the heat exchanger 1313, and the first liquid medium 1312 and the second liquid medium 1212 may exchange heat in the heat exchanger 1313.

[0070] The first water tank 1314 and the hot water exchanger 1313 can be in communication, allowing the first liquid medium 1312 to enter the hot water exchanger 1313 from the first water tank 1314 and circulate between the first water tank 1314 and the hot water exchanger 1313. The heat transfer pipe 1211 can also be in communication with the hot water exchanger 1313, allowing the second liquid medium 1212 to enter the hot water exchanger 1313 from the heat transfer pipe 1211 and circulate between the two.

[0071] In some embodiments, the hot water exchanger 1313 may include a plate heat exchanger, which is a heat exchanger composed of a plurality of corrugated metal plates stacked together. A thin rectangular channel can be formed between adjacent metal plates, and the liquid in the rectangular channel (such as the first liquid medium 1312 and the second liquid medium 1212 in the embodiment of the present application) can exchange heat through the metal plates. The plate heat exchanger has the characteristics of high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application and long service life. Under the same pressure loss conditions, the heat transfer coefficient of the plate heat exchanger is 3 to 5 times higher than that of the tube heat exchanger. The floor area of ​​the plate heat exchanger can be one-third of the floor area of ​​the tube heat exchanger, and the heat recovery rate of the plate heat exchanger can reach 90%.

[0072] FIG6 is a schematic structural diagram of another projection device 10 provided in an embodiment of the present application. Referring to FIG6 , in some embodiments, the hot water exchange tank 1311 may further include a third circulation pump 1315 and a heat exchange pipe 1316. The heat exchange pipe 1316 may be used to connect the hot water exchanger 1313 and the first water storage tank 1314, so that the first liquid medium 1312 circulates between the hot water exchanger 1313 and the first water storage tank 1314 through the heat exchange pipe 1316. The third circulation pump 1315 may be installed on the heat exchange pipe 1316 to drive the flow of the first liquid medium 1312 in the heat exchange pipe 1316. The hot water exchanger 1313 has a first water inlet c1 and a first water outlet c2. Both the first water inlet c1 and the first water outlet c2 can be connected to the heat exchange pipe 1316, so that the first liquid medium 1312 in the first water storage tank 1314 can enter the hot water exchanger 1313 through the heat exchange pipe 1316 and the first water inlet c1, and flow back to the first water storage tank 1314 from the first water outlet c2 of the hot water exchanger 1313 and the heat exchange pipe 1316.

[0073] In this way, the first liquid medium 1312 in the first water tank 1314 can enter the hot water exchanger 1313 under the drive of the third circulation pump 1315, and perform heat exchange with the second liquid medium 1212 in the hot water exchanger 1313. At this time, the temperature of the first liquid medium 1312 is lower than the temperature of the second liquid medium 1212, that is, the first liquid medium 1312 can absorb the heat of the second liquid medium 1212, so that the temperature of the first liquid medium 1312 rises, and then flows out through the first water outlet c2 of the hot water exchanger 1313 and flows into the first water tank 1314. The first liquid medium 1312 in the first water tank 1314 can be continuously heated in a reciprocating cycle until the temperature of the first liquid medium 1312 in the first water tank 1314 is greater than or equal to the target temperature, and the recovery unit 132 can recover the energy stored in the first liquid medium 1312.

[0074] In some embodiments, the hot water exchanger 1313 may also include a double-tube heat exchanger. This heat exchanger uses two standard tubes of different sizes connected together to form concentric tubes. The outer tube is called the shell side, and the inner tube side is called the tube side. The two different media can flow in opposite directions (or in the same direction) within the shell and tube sides to achieve heat exchange.

[0075] FIG7 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application, and FIG8 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application. Referring to FIG7 and FIG8 , in some embodiments, the recovery unit 132 includes a second water storage tank 1321, a water inlet pipe 1322, and a water outlet pipe 1323. The second water storage tank 1321 includes a first chamber k1 and a second chamber k2. The water inlet pipe 1322 is in communication with the first chamber k1 and the heat exchange water tank 1311, respectively. The first chamber k1 contains a first liquid medium 1312. The water outlet pipe 1323 is in communication with the second chamber k2 and the heat exchange water tank 1311, respectively. The temperature of the first liquid medium 1312 in the water inlet pipe 1322 is greater than the temperature of the first liquid medium 1312 in the water outlet pipe 1323.

[0076] Thus, when the temperature of the heat exchange unit 131 is greater than or equal to the target temperature, the first liquid medium 1312 in the heat exchange water tank 1311 of the heat exchange unit 131 can flow from the heat exchange water tank 1311 into the second chamber k2 of the second water storage tank 1321 through the outlet pipe 1323, thereby storing the higher-temperature first liquid medium 1312 in the second chamber k2 of the second water storage tank 1321, allowing the recovery unit 132 to recover the heat in the first liquid medium 1312. In some embodiments, the first liquid medium 1312 can be domestic water, and the second chamber k2 of the second water storage tank 1321 can be a heat-insulating chamber, allowing the recovery unit 132 to collect and store heat in the heat exchange unit. When the domestic water is heated to 40 degrees Celsius in the heat exchange water tank 1311, it can be stored in the second chamber k2 through the outlet pipe 1323 for daily use by the user. The second chamber k2 of the second water storage tank 1321 can also be connected to a water valve in the home so that the user can use the hot water recovered by the recovery unit 132 at any time.

[0077] At the same time, the first chamber k1 can store a lower-temperature first liquid medium 1312. When the higher-temperature first liquid medium 1312 flows from the hot water exchange tank 1311 into the second chamber k2 of the second water storage tank 1321, the lower-temperature first liquid medium 1312 can flow from the first chamber k1 of the second water storage tank 1321 into the hot water exchange tank 1311 through the water inlet pipe 1322. In this way, the lower-temperature first liquid medium 1312 can be replenished in the hot water exchange tank 1311 in a timely manner, preventing the first liquid medium 1312 in the hot water exchange tank 1311 from being drained. The second chamber k2 can be connected to a tap water inlet, ensuring that the lower-temperature first liquid medium 1312 is always present in the second chamber k2.

[0078] As shown in Figure 8, in some embodiments, the hot water tank 1311 may include a hot water exchanger 1313 and a first water storage tank 1314, the water inlet pipe 1322 of the recovery unit 132 can be respectively connected to the first chamber k1 of the second water storage tank 1321 and the first water storage tank 1314, the first chamber k1 contains a first liquid medium 1312, and the water outlet pipe 1323 of the recovery unit 132 can be respectively connected to the second chamber k2 and the first water storage tank 1314.

[0079] Figure 9 is a structural schematic diagram of another projection device 10 provided in an embodiment of the present application. Please refer to Figure 9. In some embodiments, the projection device 10 may further include a first temperature sensor 14, and the recovery unit 132 also includes a first valve m1 and a second valve m2. The first temperature sensor 14 is in contact with the heat exchange unit 131, the first valve m1 is located on the water inlet pipe 1322, and the second valve m2 is located on the water outlet pipe 1323. The first temperature sensor 14 is electrically connected to the first valve m1 and the second valve m2, respectively.

[0080] The first temperature sensor 14 can be installed on the heat exchange water tank 1311 or the first water storage tank 1314 of the heat exchange unit 131, and can detect the temperature of the heat exchange unit 131 in real time. When the first temperature sensor 14 detects that the temperature of the heat exchange unit 131 is greater than or equal to the target temperature, it outputs a first level to open the first valve m1 and the second valve m2. When the first temperature sensor 14 detects that the temperature of the heat exchange unit 131 is lower than the target temperature, it outputs a second level to close the first valve m1 and the second valve m2.

[0081] FIG10 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application. Referring to FIG10 , in some embodiments, the recovery unit 132 may further include a first circulation pump 1324. The first circulation pump 1324 may be located on the water inlet pipe 1322, and the first temperature sensor 14 may be electrically connected to the first circulation pump 1324. The temperature of the heat exchange unit 131 obtained by the first temperature sensor 14 is positively correlated with the current value of the driving current of the first circulation pump 1324. The first circulation pump 1324 may be installed on the water inlet pipe 1322 of the heat exchange unit 131 to drive the first liquid medium 1312 in the water inlet pipe 1322 to flow. The higher the temperature of the heat exchange unit 131 obtained by the first temperature sensor 14, the greater the driving current value of the first circulation pump 1324 can be. The greater the current value of the driving current of the first circulation pump 1324, the faster the rotation speed of the first circulation pump 1324, and the faster the first circulation pump 1324 can drive the first liquid medium 1312 in the heat exchange unit 131 and the recovery unit 132 to circulate. In this way, the cooling speed of the first liquid medium 1312 in the heat exchange unit 131 can be accelerated, avoiding the high temperature of the first liquid medium 1312 in the heat exchange unit 131 and the inability to exchange heat with the second liquid medium 1212 in the circulation pipeline 121, which in turn causes the temperature of the electronic device 11 to be too high.

[0082] FIG11 is a schematic diagram of a driving current for a first circulating pump 1324 provided in an embodiment of the present application. Referring to FIG10 and FIG11 , in some embodiments, when the temperature of the heat exchange unit 131 is greater than or equal to a first temperature threshold, the first circulating pump 1324 is driven with a first driving current. The first temperature threshold may be a fixed value pre-set in the projection device 10. For example, the first temperature threshold may be 50 degrees Celsius. At this point, the first circulating pump 1324 may be driven with the first driving current to accelerate the cooling of the first liquid medium 1312 in the heat exchange unit 131.

[0083] After first circulating pump 1324 operates for a first preset time period, first temperature sensor 14 obtains the temperature of heat exchange unit 131. If the temperature of heat exchange unit 131 is greater than or equal to a first temperature threshold, first circulating pump 1324 is driven with a second drive current having a current value greater than the first drive current until the temperature of heat exchange unit 131 falls below the first temperature threshold.

[0084] After the first circulating pump 1324 has run for a first preset period of time, the temperature of the heat exchange unit 131 can be obtained again. Since the temperature of the heat exchange unit 131 obtained by the first temperature sensor 14 is positively correlated with the current value of the driving current of the first circulating pump 1324, that is, the higher the temperature of the heat exchange unit 131 obtained by the first temperature sensor 14, the greater the driving current value of the first circulating pump 1324 can be, thereby increasing the cooling rate of the first liquid medium 1312 in the heat exchange unit 131. Therefore, when the temperature of the heat exchange unit 131 is continuously greater than or equal to the first temperature threshold, the driving current of the first circulating pump 1324 can be increased to reduce the temperature of the heat exchange unit 131.

[0085] FIG12 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application, and FIG13 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application. Referring to FIG12 and FIG13 , in some embodiments, the liquid cooling assembly 12 may further include a second circulation pump 122, and the heat conduction pipe 1211 may include a first pipe segment a1, a second pipe segment a2, a third pipe segment a3, and a fourth pipe segment a4. The first pipe segment a1, the second pipe segment a2, the third pipe segment a3, and the fourth pipe segment a4 form a circulation pipe 121. The first pipe segment a1 may be connected to the second pipe segment a2 and the fourth pipe segment a4, and the first pipe segment a1 may be in contact with the electronic device 11. The third pipe segment a3 is connected to the heat exchange unit 131, and the second circulation pump 122 is located on the second pipe segment a2 or the fourth pipe segment a4. The second circulation pump 122 can drive the second liquid medium 1212 in the heat-conducting pipe 1211 to circulate. In this way, the second circulation pump 122 can accelerate the circulation speed of the second liquid medium 1212 in the heat-conducting pipe 1211, thereby accelerating the cooling speed of the circulation pipeline 121 on the electronic device 11, thereby avoiding the phenomenon of the electronic device 11 being overheated.

[0086] As shown in FIG. 13 , the projection device 10 may include a plurality of electronic devices 11 , and the first pipe segment a1 may be in contact with the plurality of electronic devices 11 to collect heat generated by the plurality of electronic devices 11 during operation.

[0087] 12 and 13 simplify the structure of the heat pipe 1211 to illustrate the connection method of the heat pipe 1211. In FIG13, the third pipe section a3 of the heat pipe 1211 can be integrated with the channel in the hot water exchanger 1313.

[0088] The first pipe segment a1 may include multiple sub-pipe segments, each of which is connected to the second pipe segment a2 and the fourth pipe segment a4. The projection device 10 includes multiple electronic devices 11, and the multiple sub-pipe segments correspond one-to-one with the multiple electronic devices 11, and the sub-pipe segments are in contact with the electronic devices 11. The third pipe segment a3 is connected to the heat exchange unit 131, and the second circulation pump 122 is located on the second pipe segment a2 or the fourth pipe segment a4. When the thermal power of the electronic devices 11 in the projection device 10 is large, a parallel heat dissipation connection method can be adopted, that is, multiple sub-pipe segments are in one-to-one contact with the multiple electronic devices 11 to ensure the heat dissipation effect of the electronic devices 11 and avoid mutual influence between the multiple electronic devices 11. In some embodiments, the electronic devices 11 include a laser and a digital micromirror device (DMD). The second liquid medium 1212 in the multiple sub-segments of the first pipe segment a1 can absorb the heat generated by the DMD and the heat generated by the laser respectively and then merge in the second pipeline, and then be driven by the second circulation pump 122 to be transported to the third pipe segment a3, dissipate heat in the heat exchange water tank 1311, and circulate to the fourth pipe segment a4.

[0089] Alternatively, a series heat dissipation connection method may be adopted, that is, the first pipe section may be in contact with multiple electronic devices 11, so that the structure of the heat conduction pipe is simpler.

[0090] FIG14 is a schematic diagram of the structure of another projection device 10 provided in an embodiment of the present application. Referring to FIG14 , in some embodiments, the projection device 10 further includes a second temperature sensor 15 , which is connected to the electronic device 11 and electrically connected to the second circulation pump 122 . The temperature of the electronic device 11 obtained by the second temperature sensor 15 is positively correlated with the current value of the driving current of the second circulation pump 122 . In other words, the higher the temperature of the electronic device 11 obtained by the second temperature sensor 15 , the larger the driving current value of the second circulation pump 122 can be, the higher the speed of the second circulation pump 122 can be, and the cooling rate of the circulation pipeline 121 on the electronic device 11 can be increased. Therefore, when the temperature of the electronic device 11 is high, the temperature of the electronic device 11 can be reduced by increasing the driving current of the second circulation pump 122 .

[0091] In some embodiments, the recovery unit 132 can be used to collect the thermal energy of the heat exchange unit 131 when the temperature of the heat exchange unit 131 is greater than or equal to the target temperature. The heat exchange unit 131 can be an energy storage device, which can store energy through an energy storage medium or an energy storage device, and directly use the energy or convert the energy into other energy when the energy is needed. In addition, when the temperature of the heat exchange unit 131 reaches the target temperature, the heat exchange unit 131 transfers heat to the recovery unit 132, so that the heat recovery efficiency of the recovery unit 132 is higher. For example, the energy storage medium in the heat exchange unit 131 is water, and the target temperature is 40 degrees Celsius. When the temperature of the heat exchange unit 131 reaches 40 degrees Celsius, the recovery unit 132 can collect the hot water in the heat exchange unit 131 and use the hot water as domestic water, which can save users the resources used for heating when using domestic hot water (such as natural gas, coal, etc.).

[0092] In summary, the embodiments of the present application provide a projection device comprising electronic components, a liquid cooling assembly, and a heat recovery assembly. Heat energy generated by the electronic components is collected through a circulation pipeline in the liquid cooling assembly and then transferred to the heat recovery assembly. This allows the electronic components to be cooled by the liquid cooling assembly, while the heat generated by the electronic components is recovered by the heat recovery assembly for reuse. This addresses the low energy efficiency issue of projection devices in related art and improves the energy efficiency of the projection device.

[0093] In addition, compared with the fan-cooled heat dissipation structure in the related art, the embodiment of the present application uses a liquid cooling component to dissipate heat for the electronic devices in the projection device, which can reduce or avoid the use of a cooling fan to cool the electronic devices, thereby achieving the effect of reducing noise, thereby improving the user experience.

[0094] Figure 15 is a schematic diagram of the structure of another projection device 20 provided in an embodiment of the present application. Referring to Figure 15 , the projection device 10 includes an electronic device 11, a heat recovery assembly 13, and a cooling fan 16. The cooling fan 16 faces the electronic device 11. The heat recovery assembly 13 is located in the heat dissipation path of the electronic device 11 and is used to collect the heat energy generated by the electronic device 11.

[0095] In some embodiments, as shown in FIG15 , the electronic device 11 is located between the cooling fan 16 and the heat recovery assembly 13. That is, the wind direction of the cooling fan 16, the electronic device 11, and the heat recovery assembly 13 can be aligned. For example, the side a and side b of the electronic device 11 are opposite each other. The cooling fan 16 is located on the side a of the electronic device 11 to blow air toward the surface of this side of the electronic device 11. The heat recovery assembly 13 is located on the side b of the electronic device 11 to recover heat energy emitted by the electronic device 11 from this side. If the two sides of the electronic device 11 are thicker, the temperature on the side where the heat recovery assembly 13 is located may be higher than the temperature on the side where the cooling fan 16 is located. In this way, while cooling the electronic device 11, more heat energy can also be collected by the heat recovery assembly 13. The heat energy dissipation path discussed herein includes the heat energy dissipation path on the side of the electronic device 11 with a higher temperature.

[0096] In other embodiments, the wind direction of the cooling fan 16, the electronic device 11, and the heat recovery assembly 13 are not aligned. For example, the wind direction of the cooling fan 16 is perpendicular to the line between the electronic device 11 and the heat recovery assembly 13. For example, if side a and side c of the electronic device 11 are perpendicular, the cooling fan 16 is located on side a of the electronic device 11 to blow air toward the surface of that side of the electronic device 11, and the heat recovery assembly 13 is located on side c of the electronic device 11 to recover heat energy emitted by the electronic device 11 from that side.

[0097] In some embodiments, as shown in FIG15 , heat recovery assembly 13 is in contact with electronic device 11 to collect heat energy generated by electronic device 11 through heat conduction between the devices. In other embodiments, heat recovery assembly 13 may not be in contact with electronic device 11, but the distance between heat recovery assembly 13 and electronic device 11 is less than a distance threshold. In other embodiments, heat recovery assembly 13 can collect heat energy generated by electronic device 11 by transferring heat energy through the air.

[0098] Taking the heat recovery component 13 contacting the electronic device 11 as an example, in some embodiments, the heat recovery component 13 may include a connected heat exchange unit and a recovery unit, the heat exchange unit is in contact with the electronic device 11, and is used to collect the heat energy generated by the electronic device 11 through heat exchange, and the recovery unit is used to collect the heat energy of the heat exchange unit.

[0099] In some embodiments, the heat exchange unit includes a heat exchange tank and a first liquid medium located within the heat exchange tank. The heat exchange tank is connected to a recovery unit. Specifically, the heat recovery component is capable of collecting heat energy generated by electronic devices via the liquid medium. The specific implementation of the heat exchange tank and recovery unit is similar to that of the related devices in the embodiments of Figures 1 and 14 and will not be further described here.

[0100] The projection device 10 shown in FIG15 can improve the power utilization efficiency of the projection device 10 through the heat recovery component 13. In some embodiments, the operating gear of the cooling fan 16 in FIG15 is controlled according to the heat dissipation method provided in the embodiment of the application to ensure that the noise of the projection device 10 is within the user's acceptable range.

[0101] While the above description describes the heat dissipation device comprising either a liquid cooling assembly or a cooling fan, in some embodiments, the heat dissipation device may also comprise both a liquid cooling assembly and a cooling fan. In this case, the specific implementation of the liquid cooling assembly and heat recovery assembly in the projection device is similar to that of the related devices in the embodiments of Figures 1 to 14 and will not be repeated here. Furthermore, by adding a cooling fan to the projection device shown in the embodiments of Figures 1 to 14, dual cooling of the electronic components can be achieved. The cooling fan can be oriented with its air outlet facing the electronic components.

[0102] For example, the cooling fan is located in the middle below the two electronic devices 11 in Figures 1 to 14 to dissipate heat efficiently for both electronic devices 11. Of course, the cooling fan can also be located closer to the electronic device 11 that generates more heat than the other two electronic devices 11. For example, if the left electronic device 11 generates more heat, the cooling fan can be located to the left of or directly below the left electronic device 11.

[0103] In some embodiments, the operating gear of the added cooling fan is controlled according to the cooling method provided in the embodiment of the present application to keep the noise of the projection device within the acceptable range for the user. During the operation of the cooling fan, the liquid cooling component and the heat recovery component may not be in operation.

[0104] In other embodiments, the liquid cooling assembly and the heat recovery assembly operate, but the heat dissipation fan does not operate.

[0105] In yet other embodiments, the liquid cooling assembly, heat recovery assembly, and cooling fan are all in operation. The cooling fan's operating position can be controlled according to the heat dissipation method provided in the embodiments of the present application, or it can be controlled independently of the method, such as by maintaining it at its initial operating position. Furthermore, the cooling fan's operating position can be maintained below a specified position. This allows the cooling requirements of electronic components to be met while the liquid cooling assembly is operating simultaneously, while also reducing the operating noise of the projection device. Of course, the cooling fan's operating position can also be maintained at or above the specified position.

[0106] In addition to the several projection devices introduced above, the embodiments of the present application also provide several other projection devices.

[0107] In one type of projection device, the device's heat dissipation mechanism includes a cooling fan, but no liquid cooling component. Furthermore, the device also lacks a heat recovery component. The device adjusts the cooling fan's operating position based on user instructions to control noise, keeping it within an acceptable range for the user. The following describes the structure of this projection device.

[0108] Taking the example of a projection device including a laser projection device and an electronic device including a light source assembly, please refer to Figure 16, which is a schematic structural diagram of a laser projection device 100 involved in a heat dissipation method for a laser projection device provided in an embodiment of the present application. Laser projection device 100 may include: a light source assembly 101, and a cooling fan 102 for dissipating heat from light source assembly 101.

[0109] The light source assembly 101 in the laser projection device 100 provides a laser beam for the laser projection device 100. Here, the light source assembly 101 may include a laser 103, and the light source assembly 101 may provide the laser beam for the laser projection device 100 via the laser 103. When the laser 103 is in operation, it generates a large amount of heat. After long periods of operation, the temperature of the light source assembly 101 is relatively high. When the temperature of the light source assembly 101 is relatively high, the quality of the laser beam provided by the light source assembly 101 is relatively poor.

[0110] In some embodiments, the laser 103 in the light source assembly 101 can be a three-color laser 103. That is, the laser 103 can have multiple light-emitting units, among which some laser units are laser units for emitting red laser light, some laser units are laser units for emitting green laser light, and some laser units are laser units for emitting blue laser light. When the temperature of the light source assembly 101 is high, the light-emitting efficiency of the light-emitting units in the laser 103 for emitting red laser light is low, resulting in less red laser light provided by the laser 103, which in turn leads to poor quality of the laser beam provided by the light source assembly 101, which may ultimately lead to poor quality of the projected image projected by the laser projection device 100.

[0111] To reduce the operating temperature of the light source assembly 101, when the laser projection device 100 is in operation, the laser projection device 100 can exchange heat with the outside world via the cooling fan 102 to dissipate heat generated by the operation of the laser 103 of the light source assembly 101 in the laser projection device 100. The operating position of the cooling fan 102 is controlled by the heat dissipation method provided in the embodiment of the present application, which can ensure that the noise generated by the cooling fan 102 is within an acceptable range for the user.

[0112] In another projection device, the heat dissipation device includes a liquid cooling assembly and a heat recovery fan, but the projection device does not include a heat recovery assembly. The structure of the liquid cooling assembly is the same as that of the liquid cooling assembly in Figures 1 to 14 and will not be described in detail here. The relative position of the heat recovery fan and the liquid cooling assembly is similar to the relative position of the heat recovery fan and the heat recovery assembly described above and will not be described in detail here.

[0113] In one embodiment, the cooling fan in the projection device is operating (i.e., running), but the liquid cooling assembly is not operating. The projection device controls the operating level of the cooling fan according to the heat dissipation method provided in the embodiments of this application. For specific implementation methods, please refer to the relevant descriptions of the embodiments in Figures 19 and 20 below.

[0114] In another embodiment, both the liquid cooling component and the heat dissipation fan in the projection device are in operation. Since the liquid cooling component can reduce the heat energy of the electronic device when in operation, the temperature of the electronic device will not be too high. Therefore, the operating gear of the heat dissipation fan does not need to be too high to meet the cooling effect of the electronic device. At a lower gear, the speed of the heat dissipation fan is lower, and the noise generated is also relatively small. For example, when the liquid cooling component is in operation, the operating gear of the heat dissipation fan is lower than the specified gear. The specified gear is a preset lower gear. For example, the operating gear of the heat dissipation fan includes high gear, high gear, mid-range, low gear, and low gear. Then, the specified gear can be a low gear or a low gear. Among them, the operating gear of the heat dissipation fan can also be controlled by the heat dissipation method provided in the embodiment of the present application, except that the operating gear is controlled within the specified gear.

[0115] In another embodiment, the liquid cooling assembly in the projection device is working, but the heat dissipation fan is not working (ie, not running). In this way, the projection device can be cooled down and the operating noise of the projection device can be reduced.

[0116] Figure 17 is a block diagram of another laser projection device provided in an embodiment of the present application. Laser projection device 200 may include, but is not limited to, a light source assembly 201, a light valve 204, and a lens 205. Light valve 204 within laser projection device 200 may be a DMD light valve. Light source assembly 200 provides a laser beam to light valve 204. Light valve 204 adjusts the laser beam provided by light source assembly 200 into an image beam, which is then emitted to lens 205. Lens 205 forms an image of the image beam and emits it to a projection screen.

[0117] Laser projection device 200 also includes a heat sink and a heat recovery component. The heat sink includes at least one of a cooling fan and a liquid cooling assembly. The heat sink is used to dissipate heat from electronic components within laser projection device 200, such as light source assembly 201. The heat recovery component is used to recover heat energy generated by light source assembly 201. In some embodiments, the heat sink includes at least one of a cooling fan and a liquid cooling assembly, while the projection device does not include a heat recovery component.

[0118] When the laser projection device 200 includes a cooling fan, the laser projection device 200 can control the operating position of the cooling fan according to the cooling method provided in the embodiment of the present application. For specific implementation methods, please refer to the relevant description of the embodiments of Figures 19 to 21 below.

[0119] When the laser projection device 200 includes a cooling fan and a liquid cooling assembly, the laser projection device 200 dissipates heat from the electronic components through the cooling fan and / or the liquid cooling assembly. Specific implementation methods are described in detail in the embodiments of FIG. 1 to FIG. 21 .

[0120] If the laser projection device 200 includes a liquid cooling assembly, the liquid cooling assembly dissipates heat from the electronic components. In some embodiments, the laser projection device 200 also utilizes a heat recovery assembly to recover heat energy from the electronic components. For specific implementations, please refer to the description of the embodiments in Figures 1 through 14 above and will not be repeated here.

[0121] An embodiment of the present application also provides another projection device, which includes electronic components such as a processor and a heat dissipation fan. The processor is used to execute the steps in the heat dissipation method for the projection device provided in the embodiment of the present application.

[0122] For example, the processor is used to obtain the current operating temperature of the electronic components in the projection device and the current operating level of the cooling fan in the projection device after the projection device is in operation. If the current operating temperature is detected to be greater than the temperature range corresponding to the current operating level, the processor issues a prompt message, which is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating level. After receiving an adjustment instruction triggered by the user, the processor adjusts the operating level of the cooling fan to a target operating level, which is greater than or equal to the current operating level of the cooling fan. For specific implementation methods, please refer to the detailed description in the method embodiment below.

[0123] In one implementation, the projection device includes a processor and a memory, and the memory stores program code. When some or all of the modules in the embodiments of Figures 22 to 25 below are implemented by software, the program code in the memory includes these modules. For example, when one or more of the acquisition module 2201, the sending module 2202, and the adjustment module 2203 in the embodiment of Figure 22 are implemented by software, the program code in the memory includes these one or more modules. Taking the example of the program code including the adjustment module, the adjustment module in the program code is used to adjust the operating gear of the cooling fan to the target operating gear after receiving an adjustment instruction triggered by the user.

[0124] Based on the projection device including electronic components, a liquid cooling component, a heat recovery component, a first temperature sensor, and a second temperature sensor, embodiments of the present application further provide a method for driving the projection device. In some embodiments, the method can be executed by a processor or controller in the projection device. The projection device can be a laser projection device or other projection device.

[0125] FIG18 is a flow chart of a method for driving a projection device provided in an embodiment of the present application. The method is used for a projection device. Referring to FIG18 , the method includes the following steps:

[0126] Step 1801: Obtain the temperature of the electronic device.

[0127] When the projection device is running, the temperature of the electronic component can be obtained through the second temperature sensor.

[0128] Step 1802: When the temperature of the electronic device is greater than or equal to the second temperature threshold, drive the second circulation pump with a third driving current.

[0129] The second temperature threshold may be the maximum temperature at which electronic components in the projection device can operate normally. For example, the second temperature threshold may be the maximum temperature at which a laser can normally emit light. That is, when the temperature of the laser is greater than or equal to the second temperature threshold, the light extraction efficiency of the material inside the laser will decrease at this temperature. The third drive current may be the normal drive current of the second circulating pump.

[0130] Step 1803: After the second circulating pump runs for a second preset time, the temperature of the electronic component is obtained again.

[0131] After the second circulation pump has been running for a period of time, the temperature of the electronic device can be acquired again through the second temperature sensor to detect the cooling effect of the circulation pipeline on the electronic device.

[0132] The second preset duration may be a preset duration, such as a factory-set parameter of the projection device or a parameter set by the user. The second preset duration may be, for example, 30 seconds, 1 minute, or 5 minutes, which is not limited in this embodiment of the present application.

[0133] Step 1804 : When the temperature of the electronic device is greater than or equal to the second temperature threshold, drive the second circulation pump with a fourth driving current, where the current value of the fourth driving current is greater than the current value of the third driving current.

[0134] After the second preset time, the temperature of the electronic device is still greater than or equal to the second temperature threshold, indicating that the electronic device is still in a high temperature state. At this time, the driving current value of the second circulation pump can be increased to speed up the cooling efficiency of the circulation pipeline on the electronic device until the temperature of the electronic device is lower than the second temperature threshold.

[0135] In response to the temperature of the electronic device being less than a second temperature threshold, step 1801 is executed.

[0136] Step 1805: Obtain the temperature of the heat exchange unit.

[0137] When the projection device is running, the temperature of the heat exchange unit can be obtained through the first temperature sensor.

[0138] Step 1806: When the temperature of the heat exchange unit is greater than or equal to the first temperature threshold, drive the first circulation pump with a first driving current.

[0139] The first temperature threshold can be a preset temperature value. At this time, the first circulation pump can drive the cold water in the recovery unit to enter the heat exchange tank through the water inlet pipe. The cold water can exchange heat with the second liquid medium in the liquid cooling component. After absorbing heat, the temperature of the cold water rises and is output to the domestic water terminal through the water outlet pipe for daily use by the user.

[0140] Step 1807: After the first circulation pump runs for a first preset time, the temperature of the heat exchange unit is obtained again.

[0141] After the first circulation pump has been running for a period of time, the temperature of the heat exchange unit can be obtained again through the first temperature sensor.

[0142] The first preset duration can be a preset duration, such as a factory-set parameter of the projection device or a parameter set by the user. The second preset duration can be, for example, 30 seconds, 2 minutes, or 3 minutes, which is not limited in the embodiments of the present application. The second preset duration can be the same as the first preset duration, or can also be different.

[0143] Step 1808: When the temperature of the heat exchange unit is greater than or equal to the first temperature threshold, drive the first circulation pump with a second driving current, where the current value of the second driving current is greater than the current value of the first driving current.

[0144] After the first preset time, the temperature of the heat exchange unit is still greater than or equal to the first temperature threshold, indicating that the heat exchange unit is still in a high temperature state. At this time, the driving current value of the first circulation pump can be increased to speed up the cooling efficiency of the heat exchange unit by the recovery unit until the temperature of the heat exchange unit is lower than the first temperature threshold.

[0145] In response to the temperature of the heat exchange unit being less than the first temperature threshold, step 1805 is executed.

[0146] Based on the fact that a projection device includes a cooling fan, embodiments of the present application also provide a cooling method for the projection device, which is applied to the projection device. In some embodiments, the method can be executed by a processor or controller in the projection device. The projection device can be a laser projection device or other projection device. The method can be applied to any of the projection devices described above that include a cooling fan.

[0147] In this method, after the projection device is in operation, the current operating temperature of the electronic components and the current operating level of the cooling fan are obtained. If the current operating temperature is detected to be greater than the temperature range corresponding to the current operating level, a prompt message is issued to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating level. Upon receiving an adjustment instruction triggered by the user, the operating level of the cooling fan is adjusted to a target operating level, which is greater than or equal to the current operating level of the cooling fan. In this way, the operating level of the cooling fan is adjusted according to the user's instructions, ensuring that the noise level of the projection device is within an acceptable range for the user while dissipating heat.

[0148] Next, taking the projection device including a laser projection device and the electronic devices in the projection device including a light source assembly as an example, the heat dissipation method of the projection device provided in the embodiment of the present application is introduced.

[0149] Please refer to Figure 19, which is a schematic diagram of a heat dissipation method for a laser projection device provided in an embodiment of the present application. The heat dissipation method for a laser projection device can be applied to any of the above-mentioned projection devices including a heat dissipation fan. The heat dissipation method for the laser projection device may include:

[0150] Step 1901: After the laser projection device is in working state, obtain the current working temperature of the light source assembly and the current operating gear of the cooling fan.

[0151] The operating gear of the cooling fan is used to represent the speed of the cooling fan. A higher operating gear of the cooling fan indicates a higher speed of the cooling fan; conversely, a lower operating gear of the cooling fan indicates a lower speed of the cooling fan.

[0152] It should be noted that when the cooling fan is operated at a certain operating gear, the operating temperature of the light source assembly can theoretically be stabilized within a corresponding temperature range. To this end, each operating gear of the cooling fan can correspond to a temperature range.

[0153] Step 1902: If it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear of the cooling fan, a prompt message is issued.

[0154] Here, the prompt information is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating level of the cooling fan. Upon detecting that the current operating temperature is greater than the temperature range corresponding to the current operating level of the cooling fan, the laser projection device may provide a prompt information to the user by projecting a prompt box on the projected image.

[0155] Step 1903: After receiving the adjustment instruction triggered by the user, the operating gear of the cooling fan is adjusted to the target operating gear.

[0156] In this application, after receiving a prompt message, the user can trigger an adjustment instruction to adjust the operating level of the cooling fan or trigger an adjustment instruction not to adjust the operating level of the cooling fan. The laser projection device can then determine the target operating level of the cooling fan based on the adjustment triggered by the user. In this way, the user can independently determine the operating level of the cooling fan according to their personal needs, and then adjust the operating state of the laser projection device, so that the operating state of the laser projection device can not only meet the user's requirements for the projected image, but also ensure that the noise generated by the laser projection device is within an acceptable range for the user.

[0157] When the user triggers an instruction to adjust the operating level of the cooling fan according to the prompt information, the laser projection device can increase the operating level of the cooling fan. That is, after the laser projection device adjusts the operating level of the cooling fan to the target operating level, the target operating level is greater than the current operating level of the cooling fan. This increases the speed of the cooling fan, thereby improving the efficiency of the cooling fan in cooling the light source assembly, improving the quality of the laser beam provided by the light source assembly, and thus improving the quality of the projected image projected by the laser projection device.

[0158] If the user triggers the instruction not to adjust the cooling fan's operating level according to the prompt, the laser projection device may not adjust the cooling fan's operating level. That is, after the laser projection device adjusts the cooling fan's operating level to the target operating level, the target operating level will be equal to the cooling fan's current operating level. This allows the cooling fan to remain at its current operating level, ensuring that the cooling fan's noise level does not increase, thereby maintaining a low overall operating noise level for the laser projection device.

[0159] In summary, embodiments of the present application provide a heat dissipation method for a laser projection device. Upon detecting that the current operating temperature is greater than the temperature range corresponding to the current operating level of the cooling fan, the laser projection device can issue a prompt to the user. When the user triggers an adjustment instruction to adjust the cooling fan's operating level in accordance with the prompt, the laser projection device can increase the cooling fan's operating level. This increases the cooling fan's speed, thereby improving the cooling efficiency of the cooling fan for the light source assembly, improving the quality of the laser beam provided by the light source assembly, and thereby improving the quality of the projected image produced by the laser projection device. When the user triggers an adjustment instruction not to adjust the cooling fan's operating level in accordance with the prompt, the laser projection device can remain at the cooling fan's operating level. This maintains the cooling fan at its current operating level, ensuring that the noise generated by the cooling fan does not increase, thereby maintaining a low overall operating noise level for the laser projection device. Thus, the user can independently determine the cooling fan's operating level based on their personal needs, thereby adjusting the operating state of the laser projection device to ensure that the operating state of the laser projection device meets the user's projected image requirements while ensuring that the noise generated by the laser projection device is within an acceptable range for the user.

[0160] Please refer to Figure 20, which is a flow chart of another heat dissipation method for a laser projection device provided in an embodiment of the present application. The heat dissipation method for a laser projection device can be applied to any of the above-mentioned projection devices including a heat dissipation fan. The heat dissipation method for the laser projection device may include:

[0161] Step 2001: After the laser projection device is in working state, obtain the current working temperature of the light source assembly and the current operating gear of the cooling fan.

[0162] In an embodiment of the present application, after the laser projection device is in an operating state, the laser projection device can obtain the current operating temperature of the light source assembly and the current operating gear of the cooling fan.

[0163] In this application, the laser projection device may include a temperature sensor, through which the laser projection device can obtain the current operating temperature of the light source assembly. Furthermore, the laser projection device may also include a control component that is in communication with a cooling fan, through which the laser projection device can obtain the current operating position of the cooling fan. Here, there are several possible implementations for obtaining the current operating temperature of the light source assembly through the temperature sensor:

[0164] In some embodiments, the temperature sensor in the laser projection device may be located on the laser in the light source assembly, and the temperature acquired by the laser projection device through the temperature sensor is the current operating temperature of the light source assembly.

[0165] In other embodiments, the temperature sensor in the laser projection device can be located on a heat sink near the laser in the light source assembly. Here, the heat generated by the laser can be transferred to the heat sink fins, which dissipate the heat, and the air outlet surface of the heat dissipation fan can face the heat sink fins, so that the heat dissipation fan can dissipate heat for the heat sink fins. In this way, the temperature of the heat sink fins obtained by the temperature sensor can be used to characterize the operating temperature of the laser. To this end, the laser projection device can obtain the current operating temperature of the light source assembly through the temperature sensor. In this case, since there is no need to set up a placement space for the temperature sensor on the laser, the volume of the laser can be smaller, which makes the volume of the light source assembly smaller, and thus the volume of the laser projection device smaller.

[0166] It should be noted that the operating gear of the cooling fan is used to represent the speed of the cooling fan. The higher the operating gear of the cooling fan, the higher the speed of the cooling fan; conversely, the lower the operating gear of the cooling fan, the lower the speed of the cooling fan.

[0167] Step 2002: Detect whether the current operating temperature of the light source assembly is greater than the temperature range corresponding to the current operating gear of the cooling fan.

[0168] In an embodiment of the present application, the laser projection device can detect whether the current operating temperature of the light source assembly is greater than the temperature range corresponding to the current operating gear of the cooling fan.

[0169] In the present application, the cooling fan in the laser projection device can have multiple operating gears. When the cooling fan is operated at a certain operating gear, theoretically, the heat dissipated by the cooling fan can stabilize the operating temperature of the light source assembly within a corresponding temperature range. To this end, each operating gear of the cooling fan can correspond to a temperature range. It should be noted that the temperature ranges corresponding to the various operating gears of the cooling fan can include the same temperature, but the upper limit temperature of each temperature range is different.

[0170] In some embodiments, the laser projection device 100 may have m operating gears, and the m operating gears may be gear No. 1, gear No. 2... gear No. m, where m is a positive integer, for example, m may be 15. And each of the m operating gears may have a temperature range of the light source assembly 101 corresponding to this operating gear. Here, the upper limit temperature of the temperature range corresponding to each operating gear increases with the increase of the gear number. For example, the upper limit temperature of the temperature range corresponding to gear No. 2 is greater than the upper limit temperature of the temperature range corresponding to gear No. 1. When the operating gear of the cooling fan 102 is gear No. 1, the corresponding operating temperature range of the light source assembly 101 may be: (49.7°C, 50°C]. When the operating gear of the cooling fan 102 is gear No. 2, the corresponding operating temperature range of the light source assembly 101 may be: (49.7°C, 50.3°C].

[0171] Here, if the laser projection device detects that the current operating temperature of the light source assembly is within the temperature range corresponding to the current operating position of the cooling fan, it indicates that the light source assembly is in a stable operating state and the quality of the laser beam emitted by the light source assembly is good. In this case, it is necessary to continue to execute step 2002. If the laser projection device detects that the current operating temperature of the light source assembly is greater than the temperature range corresponding to the current operating position of the cooling fan, it indicates that the operating temperature of the light source assembly in the laser projection device is too high, which may result in poor quality of the laser beam provided by the light source assembly. In this case, it is necessary to execute the following step 2003.

[0172] Step 2003: If it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear of the cooling fan, a prompt message is issued.

[0173] In an embodiment of the present application, if the laser projection device detects that the current operating temperature is greater than the temperature range corresponding to the current operating level of the cooling fan, the laser projection device may issue a prompt message. This prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating level of the cooling fan.

[0174] In the present application, after the laser projection device detects that the current operating temperature is greater than the temperature range corresponding to the current operating gear of the cooling fan, the laser projection device can send a prompt message to the user by projecting a prompt box on the projection screen. Here, the prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating gear of the cooling fan. In addition, the prompt message can also carry information about the current operating gear of the cooling fan, so that the user can understand the current operating gear of the cooling fan after viewing this prompt message. In this way, the user can trigger adjustment instructions to the laser projection device based on these prompt messages and their own needs.

[0175] In some embodiments, as shown in FIG21 , which is a schematic diagram of a prompt box provided in an embodiment of the present application, the prompt box K projected by the laser projection device may include not only prompt information K1 but also a button K2 for triggering adjustment of the operating level of the cooling fan, and a button K3 for triggering non-adjustment of the operating level of the cooling fan.

[0176] After the user views the prompt information, if the user feels that the current operating gear of the cooling fan is not particularly high and the user wants to watch a projection picture with better effect, the user can select button K2 so that the laser projection device can receive an adjustment instruction for increasing the operating gear of the cooling fan, thereby enabling the laser projection device to increase the operating gear of the cooling fan.

[0177] After the user views the prompt information, if the user feels that the current operating gear of the cooling fan is high and the user can accept the display effect of the currently projected projection image, the user selects button K3, so that the laser projection device can receive an adjustment instruction not to adjust the operating gear of the cooling fan, and then maintain the cooling fan gear at the current operating gear, thereby ensuring that the noise emitted by the cooling fan will not change.

[0178] In this way, users can control the operating position of the cooling fan according to their needs, thereby ensuring that users have a better experience using the laser projection equipment.

[0179] Step 2004: After receiving the adjustment instruction triggered by the user, the adjustment instruction is parsed.

[0180] In an embodiment of the present application, after the laser projection device receives an adjustment instruction triggered by a user, the laser projection device may parse the adjustment instruction.

[0181] In some embodiments, as shown in FIG21 , if the user selects button K2, the adjustment instruction received by the laser projection device carries instruction information for increasing the heat dissipation efficiency of the light source assembly; if the user selects button K3, the adjustment instruction received by the laser projection device carries instruction information for not adjusting the heat dissipation efficiency of the light source assembly. To this end, after receiving the adjustment instruction, the laser projection device needs to parse the adjustment instruction. If the laser projection device parses the adjustment instruction and finds that it carries instruction information for increasing the heat dissipation efficiency of the light source assembly, step 2005 below can be executed; if the laser projection device parses the adjustment instruction and finds that it carries instruction information for not adjusting the heat dissipation efficiency of the light source assembly, step 2006 below can be executed.

[0182] Step 2005: When the adjustment instruction carries instruction information for increasing the heat dissipation efficiency of the light source assembly, the operating gear of the heat dissipation fan is increased.

[0183] In an embodiment of the present application, when the adjustment instruction carries instruction information for increasing the heat dissipation efficiency of the light source assembly, the laser projection device increases the operating gear of the cooling fan so that the cooling fan can operate at a target operating gear. The target operating gear can be greater than the previous operating gear of the cooling fan. In this way, by increasing the operating gear of the cooling fan, the cooling efficiency of the cooling fan for the light source assembly can be improved, so that the operating temperature of the laser in the light source assembly is lower, and the luminous efficiency of the light-emitting unit for emitting red laser light in the laser can be increased, so that the quality of the laser beam provided by the light source assembly is improved, and thus the display effect of the projection image ultimately projected by the laser projection device is better.

[0184] Here, there are many ways to increase the operating gear of the cooling fan of the laser projection device. The embodiments of this application use the following two implementation methods as examples for illustration:

[0185] In a first implementation, after the laser projection device receives an adjustment instruction and parses the adjustment instruction to determine that the adjustment instruction carries instruction information for increasing the heat dissipation efficiency of the light source assembly, the laser projection device may increase the operating level of the heat dissipation fan by n levels, where n is an integer greater than or equal to 1.

[0186] In some embodiments, assuming that the current operating gear of the cooling fan is gear 1, after the laser projection device receives the adjustment instruction, the laser projection device may adjust the operating gear of the cooling fan to gear n+1.

[0187] In a second implementation, in addition to the instruction for increasing the heat dissipation efficiency of the light source assembly, the adjustment instruction may also include a user-triggered instruction for adjusting the operating level of the cooling fan to a custom operating level. In this case, the laser projection device may adjust the operating level of the cooling fan to the custom operating level. The user-triggered custom operating level should be greater than the previous operating level of the cooling fan.

[0188] In some embodiments, after the user selects button K2, a prompt box may be displayed to prompt the user to adjust the cooling fan's operating gear to a custom gear. The user can choose to adjust the cooling fan's operating gear to any custom gear that is greater than the current operating gear. For example, if the cooling fan's current operating gear is gear 1, the user can set the self-positioning gear to gear 3. In this case, the laser projection device can adjust the cooling fan's operating gear to gear 3.

[0189] Step 2006: When the adjustment instruction carries instruction information for not adjusting the heat dissipation efficiency of the light source assembly, the operating gear of the heat dissipation fan is not adjusted.

[0190] In an embodiment of the present application, when the adjustment instruction carries instruction information not to adjust the heat dissipation efficiency of the light source assembly, the laser projection device does not adjust the operating gear of the cooling fan, so that the cooling fan can operate at the target operating gear, and the target operating gear can be equal to the previous operating gear of the cooling fan. In this way, the operating gear of the cooling fan can be maintained unchanged, the noise generated by the cooling fan will not increase, and the overall operating noise of the laser projection device can be kept low.

[0191] It should be noted that when the operating temperature of the light source assembly rises and the user chooses to trigger an adjustment instruction not to adjust the operating gear of the cooling fan, there is a possibility that the operating temperature of the light source assembly will continue to rise. In order to avoid the adverse situation where the operating temperature of the light source assembly is too high, resulting in damage to related components in the light source assembly, the laser projection device can execute step 2007 after detecting that the current operating temperature of the light source assembly is greater than the upper limit temperature of the light source assembly.

[0192] Step 2007: After detecting that the current operating temperature of the light source assembly is greater than the upper limit temperature of the light source assembly, increase the operating gear of the heat dissipation fan.

[0193] In an embodiment of the present application, after the laser projection device detects that the current operating temperature of the light source assembly is greater than the upper limit temperature of the light source assembly, the laser projection device can increase the operating gear of the cooling fan.

[0194] In this application, to protect related components in the light source assembly from damage due to excessive temperatures, the laser projection device may be provided with an upper temperature limit for the light source assembly. When the operating temperature of the light source assembly exceeds the upper temperature limit, the laser projection device may increase the operating level of the cooling fan.

[0195] Here, after the laser projection device detects that the current operating temperature is greater than the upper limit temperature of the light source assembly, the laser projection device increases the operating gear of the cooling fan, which may include:

[0196] Step A1: Obtain the temperature difference between the current operating temperature and the upper limit temperature of the light source assembly.

[0197] In an embodiment of the present application, the laser projection device can obtain the temperature difference between the current operating temperature of the light source assembly and the upper limit temperature.

[0198] Step B1: increasing the operating level of the cooling fan based on the temperature difference between the current operating temperature of the light source assembly and the upper limit temperature.

[0199] In an embodiment of the present application, the laser projection device can increase the operating level of the cooling fan based on the temperature difference between the current operating temperature of the light source assembly and the upper limit temperature, wherein the increased operating level of the cooling fan is positively correlated with the temperature difference.

[0200] In the present application, when the temperature difference between the current operating temperature of the light source assembly and the upper limit temperature is large, after the operating gear of the cooling fan is increased, the gear difference between the operating gear of the cooling fan after the increase and the operating gear before the increase is large, so that the cooling fan can quickly stabilize the operating temperature of the light source assembly within a normal temperature range. When the temperature difference between the current operating temperature of the light source assembly and the upper limit temperature is small, after the operating gear of the cooling fan is increased, the gear difference between the operating gear of the cooling fan after the increase and the operating gear before the increase is small, so that the cooling fan noise can be ensured not to increase significantly while improving the cooling efficiency of the cooling fan for the light source assembly.

[0201] In some embodiments, it is assumed that the upper limit temperature of the light source assembly can be 50°C, and the current operating gear of the cooling fan is gear 5; if the current operating temperature of the light source assembly is 55°C, the laser projection device determines the operating gear of the cooling fan to gear 8; if the current operating temperature of the light source assembly is 57°C, the laser projection device can determine the target operating gear of the cooling fan to gear 10.

[0202] In some embodiments, the operating speed of the cooling fan is always less than or equal to the specified speed. That is, the current operating speed and the adjusted operating speed of the cooling fan are both less than or equal to the specified speed. This ensures that the laser projection device can dissipate heat from the light source assembly through the cooling fan in a timely manner while also keeping the noise level of the cooling fan at a level acceptable to the user.

[0203] The designated gear is the maximum operating gear set by the user. For example, when the projection device dissipates heat through a cooling fan, or through a cooling fan and a liquid cooling component, the user can also set the maximum operating gear of the cooling fan, and the projection device determines the maximum operating gear of the cooling fan as the designated gear. The above-mentioned target operating gear does not exceed the designated gear. In addition, when the operating temperature of the light source component is greater than the temperature threshold, the laser projection device can also increase the operating gear of the cooling fan, but the adjusted operating gear of the cooling fan should be less than or equal to the maximum operating gear set by the user.

[0204] Alternatively, the designated gear is the maximum operating gear of the default configuration of the laser projection device. For example, in the case where the heat dissipation device includes a cooling fan and a liquid cooling component, the default configuration of the projection device has a maximum operating gear, and the maximum operating gear is the designated gear. The above-mentioned target operating gear does not exceed the designated gear. In addition, when the operating temperature of the light source component is greater than the temperature threshold, the laser projection can increase the operating gear of the cooling fan, but the increased operating gear of the cooling fan should be less than or equal to the maximum operating gear of the default configuration of the laser projection device. In this way, by jointly dissipating the heat of the electronic device through the liquid cooling component and the cooling fan, it is also possible to improve the heat dissipation efficiency while making the noise of the cooling fan within an acceptable range for the user.

[0205] If the heat dissipation device does not include a liquid cooling component, the projection device generally does not have a default maximum operating gear. In this case, the designated gear is the maximum operating gear set by the user. Of course, it is not ruled out that in some embodiments, even if the heat dissipation device does not include a liquid cooling component, the projection device may be configured with a maximum operating gear by default.

[0206] Step 2008: If it is detected that the current operating temperature of the electronic device is within the temperature range corresponding to the initial operating gear of the cooling fan, and the operating gear of the cooling fan is higher than the initial operating gear, the operating gear of the cooling fan is adjusted to the initial operating gear.

[0207] In an embodiment of the present application, if the laser projection device detects that the current operating temperature of the electronic device is within the temperature range corresponding to the initial operating gear of the cooling fan, and the operating gear of the cooling fan is higher than the initial operating gear, the laser projection device may adjust the operating gear of the cooling fan to the initial operating gear. The initial operating gear is the operating gear at which the laser projection device is powered on. For example, the initial operating gear may be a user-defined operating gear or the default operating gear of the laser projection device after it leaves the factory.

[0208] In this case, the cooling fan can be operated at a low initial operating gear while ensuring that the display effect of the projection image projected by the laser projection device is good, so that the noise generated by the laser projection device during operation is low.

[0209] It should be noted that the order of the steps of the heat dissipation method for the laser projection device provided in the embodiment of the present application can be appropriately adjusted, and the steps can be increased or decreased accordingly according to the situation. Any technician familiar with this technical field can easily think of the changed methods within the technical scope disclosed in this application, and they should be covered within the scope of protection of this application, so they will not be repeated here.

[0210] In summary, embodiments of the present application provide a heat dissipation method for a projection device. Upon detecting that the current operating temperature is greater than the temperature range corresponding to the current operating level of the cooling fan, the projection device can issue a prompt to the user. When the user triggers an adjustment instruction to adjust the operating level of the cooling fan in accordance with the prompt, the projection device can increase the operating level of the cooling fan. This increases the speed of the cooling fan, thereby improving the efficiency of the cooling fan in cooling the electronic device. When the electronic device includes a light source assembly, this solution can improve the quality of the laser beam provided by the light source assembly, thereby improving the quality of the projected image produced by the projection device. When the user triggers an adjustment instruction not to adjust the operating level of the cooling fan in accordance with the prompt, the projection device can remain at the operating level of the cooling fan. This maintains the cooling fan at its current operating level, ensuring that the noise generated by the cooling fan does not increase, thereby maintaining a low overall operating noise level for the projection device. Thus, the user can independently determine the operating level of the cooling fan based on their personal needs, thereby adjusting the operating state of the projection device to ensure that the operating state of the projection device meets the user's requirements for the projected image while ensuring that the noise generated by the projection device is within an acceptable range for the user.

[0211] The present application also provides a projection device. Please refer to Figure 22, which is a block diagram of a projection device 2200 provided in the present application. The heat dissipation device of the projection device 2200 includes at least a cooling fan for dissipating heat from electronic components in the projection device 2200. The projection device 2200 may include:

[0212] The acquisition module 2201 is used to acquire the current operating temperature of the electronic components in the projection device 2200 and the current operating gear of the cooling fan in the projection device 2200 after the projection device is in operation. The cooling fan is used to dissipate heat for the electronic components.

[0213] The sending module 2202 is used to send a prompt message if it is detected that the current operating temperature of the electronic device is greater than the temperature range corresponding to the current operating gear of the cooling fan. The prompt message is used to indicate to the user that the current operating temperature of the electronic device has exceeded the temperature range corresponding to the current operating gear of the cooling fan.

[0214] The adjustment module 2203 is configured to adjust the operating gear of the cooling fan to a target operating gear after receiving an adjustment instruction triggered by the user. The target operating gear is greater than or equal to the current operating gear of the cooling fan.

[0215] In summary, embodiments of the present application provide a projection device that, upon detecting that the current operating temperature is greater than the temperature range corresponding to the current operating level of the cooling fan, can issue a prompt to the user. When the user triggers an adjustment instruction to adjust the cooling fan's operating level in accordance with the prompt, the projection device can increase the cooling fan's operating level. This increases the cooling fan's rotational speed, thereby improving the cooling efficiency of the electronic device. If the electronic device includes a light source assembly, this solution can improve the quality of the light beam provided by the light source assembly, thereby improving the quality of the projected image produced by the projection device. When the user triggers an adjustment instruction not to adjust the cooling fan's operating level in accordance with the prompt, the projection device can remain at the cooling fan's operating level. This maintains the cooling fan at its current operating level, ensuring that the noise generated by the cooling fan does not increase, thereby maintaining a low overall operating noise level for the projection device. Thus, the user can independently determine the cooling fan's operating level based on their personal needs and, thereby, adjust the operating state of the projection device to ensure that the operating state of the projection device meets the user's projected image requirements while ensuring that the noise generated by the projection device is within an acceptable range for the user.

[0216] In some embodiments, when the adjustment instruction carries instruction information for increasing the heat dissipation efficiency of the electronic device, the target operating gear is greater than the current operating gear of the heat dissipation fan.

[0217] In some embodiments, the prompt information may carry information about the current operating gear of the cooling fan, and the adjustment instruction may also carry instruction information triggered by the user to adjust the operating gear of the cooling fan to a custom operating gear.

[0218] In some embodiments, when the adjustment instruction carries instruction information for not adjusting the heat dissipation efficiency of the electronic component, the target operating gear is equal to the current operating gear of the heat dissipation fan.

[0219] In some embodiments, please refer to FIG23, which is a block diagram of another projection device 2200 provided in an embodiment of the present application. The projection device 2200 may also include:

[0220] The automatic adjustment module 2204 is configured to increase the operating level of the cooling fan after detecting that the current operating temperature of the electronic component is greater than the upper temperature limit of the electronic component.

[0221] In some embodiments, please refer to Figure 24, which is a schematic diagram of an automatic adjustment module provided in an embodiment of the present application. The automatic adjustment module 2204 may include:

[0222] The calculation unit 22041 is used to obtain the temperature difference between the current operating temperature of the electronic device and the upper limit temperature of the electronic device.

[0223] The control unit 22042 is used to increase the operating level of the cooling fan based on the temperature difference between the current operating temperature of the electronic device and the upper limit temperature of the electronic device, wherein the increased operating level of the cooling fan is positively correlated with the temperature difference.

[0224] In some embodiments, the operating gear of the cooling fan is less than or equal to the specified gear.

[0225] In some embodiments, the heat dissipation device further includes a liquid cooling component, and the designated gear is the maximum operating gear of the default configuration of the projection device 2200 or the maximum operating gear set by the user.

[0226] In some embodiments, please refer to FIG25, which is a block diagram of another projection device 2200 provided in an embodiment of the present application. The projection device 2200 may also include:

[0227] The reset module 2205 is used to adjust the operating gear of the cooling fan to the initial operating gear if it is detected that the current operating temperature is within the temperature range corresponding to the initial operating gear of the cooling fan, and the operating gear of the cooling fan is higher than the initial operating gear. The initial operating gear is the operating gear when the projection device is turned on.

[0228] In summary, embodiments of the present application provide a projection device that, upon detecting that the current operating temperature is greater than the temperature range corresponding to the current operating level of the cooling fan, can issue a prompt to the user. When the user triggers an adjustment instruction to adjust the operating level of the cooling fan in accordance with the prompt, the projection device can increase the operating level of the cooling fan. This increases the speed of the cooling fan, thereby improving the efficiency of the cooling fan in cooling the electronic device. If the electronic device includes a light source assembly, this improves the quality of the light beam provided by the light source assembly, thereby improving the quality of the projected image projected by the projection device. When the user triggers an adjustment instruction not to adjust the operating level of the cooling fan in accordance with the prompt, the projection device can remain at the operating level of the cooling fan. This maintains the cooling fan at the current operating level, ensuring that the noise generated by the cooling fan does not increase, thereby ensuring that the overall operating noise of the projection device is low. Therefore, the user can independently determine the operating level of the cooling fan based on their personal needs and thereby adjust the operating state of the projection device, ensuring that the operating state of the projection device both meets the user's requirements for the projected image and ensures that the noise generated by the projection device is within an acceptable range for the user.

[0229] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices, modules and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0230] An embodiment of the present application also provides a computer-readable storage medium, which stores at least one instruction, at least one program, a code set or an instruction set. The at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by a processor to implement the driving method of the projection device shown in Figure 18, or to implement the heat dissipation method of the laser projection device shown in Figure 19 or Figure 20.

[0231] An embodiment of the present application also provides a computer program product, which includes program instructions, which, when executed by a processor, implement the driving method of the projection device shown in Figure 18, or implement the heat dissipation method of the laser projection device shown in Figure 19 or Figure 20.

[0232] In the embodiments of the present application, the term "at least one of A and B" is merely a description of the association relationship between associated objects, indicating that three possible relationships exist. For example, "at least one of A and B" can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. Similarly, "at least one of A, B, and C" indicates that seven possible relationships exist, indicating seven situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, A and C exist at the same time, C and B exist at the same time, and A, B, and C exist at the same time.

[0233] In the embodiments of the present application, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0234] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0235] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A projection device, characterized in that: The projection device comprises an electronic device, a heat dissipation device and a heat recovery component, wherein the heat dissipation device comprises at least one of a liquid cooling component and a heat dissipation fan; The liquid cooling assembly includes a circulation pipeline, the circulation pipeline is in contact with the electronic device, and the circulation pipeline is used to collect heat energy generated by the electronic device; The air outlet surface of the heat dissipation fan faces the electronic device; The heat recovery component is located on the dissipation path of the heat energy generated by the electronic device, and is used to collect the heat energy generated by the electronic device.

2. The projection device according to claim 1, characterized in that: The heat dissipation device includes the liquid cooling component, and the heat recovery component includes a connected heat exchange unit and a recovery unit. The heat exchange unit is connected to the circulation pipeline, the heat exchange unit can exchange heat with the circulation pipeline, and the recovery unit is used to collect the heat energy of the heat exchange unit.

3. The projection device according to claim 2, characterized in that: The heat exchange unit includes a heat exchange water tank and a first liquid medium located in the heat exchange water tank, and the heat exchange water tank is connected to the recovery unit; The circulation pipeline includes a heat-conducting pipe and a second liquid medium. The second liquid medium is located in the heat-conducting pipe. A portion of the heat-conducting pipe is located in the heat exchange water tank and can perform heat exchange with the first liquid medium.

4. The projection device according to claim 3, characterized in that: The heat exchange water tank comprises a hot water exchanger and a first water storage tank, the first liquid medium is located in the first water storage tank, the hot water exchanger is connected to the first water storage tank, and the first water storage tank is connected to the recovery unit; The heat-conducting pipe is connected to the hot water exchanger, and the first liquid medium and the second liquid medium can perform heat exchange in the hot water exchanger.

5. The projection device according to claim 3, characterized in that: The recovery unit comprises a second water storage tank, a water inlet pipe and a water outlet pipe, and the second water storage tank comprises a first chamber and a second chamber; The water inlet pipe is communicated with the first chamber and the heat exchange water tank respectively, the first chamber contains the first liquid medium, and the water outlet pipe is communicated with the second chamber and the heat exchange water tank respectively; The temperature of the first liquid medium in the water inlet pipe is greater than the temperature of the first liquid medium in the water outlet pipe.

6. The projection device according to claim 5, characterized in that: The projection device further includes a first temperature sensor, and the recovery unit further includes a first valve and a second valve, the first temperature sensor is in contact with the heat exchange unit, the first valve is located on the water inlet pipe, and the second valve is located on the water outlet pipe; The first temperature sensor is electrically connected to the first valve and the second valve respectively.

7. The projection device according to claim 6, characterized in that: The recovery unit further includes a first circulation pump, the first circulation pump is located on the water inlet pipe, and the first temperature sensor is electrically connected to the first circulation pump; The temperature of the heat exchange unit acquired by the first temperature sensor is positively correlated with the current value of the driving current of the first circulation pump.

8. The projection device according to claim 7, characterized in that: When the temperature of the heat exchange unit is greater than or equal to the first temperature threshold, driving the first circulation pump with a first driving current; After the first circulation pump runs for a first preset time, the first temperature sensor acquires the temperature of the heat exchange unit; If the temperature of the heat exchange unit is greater than or equal to the first temperature threshold, the first circulation pump is driven with a second drive current until the temperature of the heat exchange unit is less than the first temperature threshold, and the current value of the second drive current is greater than the current value of the first drive current.

9. The projection device according to claim 3, characterized in that: The liquid cooling assembly further includes a second circulation pump, the heat conducting pipe includes a first pipe segment, a second pipe segment, a third pipe segment and a fourth pipe segment, and the first pipe segment, the second pipe segment, the third pipe segment and the fourth pipe segment form the circulation pipeline; The first pipe segment includes a plurality of sub-pipe segments, each of which is connected to the second pipe segment and the fourth pipe segment; the projection device includes a plurality of electronic components, each of which corresponds to each of the sub-pipe segments and is in contact with the electronic components; The third pipe section is connected to the heat exchange unit; The second circulation pump is located on the second pipe section or the fourth pipe section.

10. The projection device according to claim 9, characterized in that: The projection device further comprises a second temperature sensor, the second temperature sensor is connected to the electronic device, and the second temperature sensor is electrically connected to the second circulation pump; The temperature of the electronic device acquired by the second temperature sensor is positively correlated with the current value of the driving current of the second circulation pump.

11. The projection device according to any one of claims 2 to 10, characterized in that: The recovery unit is used to collect heat energy of the heat exchange unit when the temperature of the heat exchange unit is greater than or equal to the target temperature.

12. The projection device according to any one of claims 1 to 11, characterized in that: The projection device is a laser projection device, and the electronic device includes a light source assembly.

13. A method for heat dissipation of a projection device, characterized in that: The projection device is the projection device according to any one of claims 1 to 12, and the heat dissipation device of the projection device at least includes a heat dissipation fan for dissipating heat for electronic devices in the projection device; the method includes: After the projection device is in working state, obtaining the current working temperature of the electronic device and the current operating gear position of the cooling fan; If it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear, a prompt message is issued, wherein the prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating gear; After receiving the adjustment instruction triggered by the user, the operating gear of the cooling fan is adjusted to a target operating gear, and the target operating gear is greater than or equal to the current operating gear of the cooling fan.

14. The method according to claim 13, characterized in that When the adjustment instruction carries instruction information for increasing the heat dissipation efficiency of the electronic device, the target operating gear is greater than the current operating gear of the heat dissipation fan.

15. The method according to claim 14, characterized in that The prompt information carries information about the current operating gear of the cooling fan, and the adjustment instruction also carries instruction information triggered by the user to adjust the operating gear of the cooling fan to a custom operating gear.

16. The method according to claim 13, characterized in that When the adjustment instruction carries instruction information for not adjusting the heat dissipation efficiency of the electronic device, the target operating gear is equal to the current operating gear of the heat dissipation fan.

17. The method according to claim 16, characterized in that The method further comprises: After detecting that the current operating temperature is greater than the upper limit temperature of the electronic component, the operating gear of the cooling fan is increased.

18. The method according to claim 17, characterized in that After detecting that the current operating temperature is greater than the upper limit temperature of the electronic device, increasing the operating gear of the cooling fan includes: Acquire the temperature difference between the current operating temperature and the upper limit temperature; Based on the temperature difference, the operating gear of the cooling fan is increased, wherein the increased operating gear of the cooling fan is positively correlated with the temperature difference.

19. The method according to any one of claims 13 to 18, characterized in that: The operating gear of the cooling fan is less than or equal to the specified gear.

20. The method according to claim 19, characterized in that The heat dissipation device further includes a liquid cooling component, and the designated gear is a maximum operating gear configured by default for the projection device or a maximum operating gear set by a user.

21. The method according to any one of claims 13 to 20, characterized in that: The method further comprises: If it is detected that the current operating temperature is within the temperature range corresponding to the initial operating gear of the cooling fan, and the operating gear of the cooling fan is higher than the initial operating gear, the operating gear of the cooling fan is adjusted to the initial operating gear, and the initial operating gear is the operating gear when the projection device is turned on.

22. A projection device, characterized in that: The projection device is the projection device according to any one of claims 1 to 12, the heat dissipation device of the projection device at least comprises a heat dissipation fan for dissipating heat for electronic devices in the projection device, and the projection device further comprises a processor; the processor is used to: After the projection device is in working state, obtaining the current working temperature of the electronic device and the current operating gear position of the cooling fan; If it is detected that the current operating temperature is greater than the temperature range corresponding to the current operating gear, a prompt message is issued, wherein the prompt message is used to indicate to the user that the current operating temperature has exceeded the temperature range corresponding to the current operating gear; After receiving the adjustment instruction triggered by the user, the operating gear of the cooling fan is adjusted to a target operating gear, and the target operating gear is greater than or equal to the current operating gear of the cooling fan.

Images