Semiconductor heat dissipation alarm device for laser projection lamp and method thereof

Abstract

This invention relates to the field of heat dissipation alarm technology, specifically to a semiconductor heat dissipation alarm device and method for laser projectors, comprising: a laser projector protective case, a projection device, and a temperature sensing mechanism. The projection device has heat dissipation air outlets on both sides. In the temperature sensing mechanism, a second horn and a first horn are at the same height as the first heat dissipation air outlet. A vortex tube is connected to one side of the first horn tube, and a conical base is fixedly installed on the spiral inner wall of the vortex tube. This invention utilizes the cooperation between the vortex tube, conical base, hollow tube, piston, fan-shaped plate, threaded groove, and liquid-permeable membrane to increase the volume of nitrogen gas by several times due to reduced pressure, thereby detecting the temperature of the projection device. This overcomes the limitation of temperature sensors in detecting temperatures with wind speed. Furthermore, when vaporization occurs, the piston moves upward, allowing the whistle to contact the wind speed and produce an audible alarm, thus achieving a warning effect. The device is reusable, improving its practicality.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation alarm technology, and specifically to a semiconductor heat dissipation alarm device and method for laser projection lamps. Background Technology

[0002] When a laser projector is in operation, it generates heat, which increases over time. Therefore, cooling equipment is necessary. However, if the cooling equipment or the light source malfunctions, such as after prolonged use of optical components like mirrors and lenses, issues like plating loss, oxidation, contamination, or damage can occur. This affects laser transmission and focusing, preventing effective laser energy output and causing some energy to be converted into heat. This can lead to other problems, such as increased semiconductor temperature. Similarly, if the cooling equipment malfunctions and cannot dissipate heat in time, the laser light can be damaged. Therefore, temperature sensors and alarms need to be installed at the cooling vents to ensure that when the temperature rises, the temperature sensor can trigger the alarm, alerting staff to problems with the cooling equipment or the projector. However, if the air velocity in the heat dissipation vent reaches 3-10 m / s, it will break the static air boundary layer on the sensor surface (this layer of air will hinder heat exchange), accelerate the heat convection efficiency, make the sensor match the air temperature more quickly, reduce measurement lag, and improve accuracy. However, if the air velocity is too high (e.g., more than 10 m / s) or the turbulence is severe, it may cause the sensor to be impacted by the airflow and generate a dynamic cooling / heating effect. The airflow turbulence causes the temperature around the sensor to fluctuate instantaneously, and the reading will show high-frequency vibration. Meanwhile, if there is wind outside the laser lamp and it enters the heat dissipation end, the turbulence between the heat dissipation airflow and the outside airflow will also affect the accuracy of the temperature sensor. In addition, the wind speed of existing semiconductor forced air cooling equipment for laser lamps is generally around 15-30m / s, which has already affected the normal operation of the temperature sensor. Furthermore, if the staff fails to turn off the laser lamp in time, it will increase the degree of damage to the laser lamp. Therefore, this invention provides a semiconductor heat dissipation alarm device and method for laser projection lamps. Summary of the Invention The purpose of this invention is to solve the problem that the temperature cannot be sensed in time when the hot air velocity is too high.

[0003] To achieve the above objectives, the present invention adopts the following technical solution: a semiconductor heat dissipation alarm device and method for laser projection lamps, comprising: a laser lamp protective box, a projection device, and a temperature sensing mechanism. The projection device has heat dissipation air outlets on both sides. In the temperature sensing mechanism, the second horn and the first horn are at the same height as the first heat dissipation air outlet. A vortex tube is connected to one side of the first horn tube. A conical base is fixedly installed on the spiral inner wall of the vortex tube. A hollow tube is connected to the top of the conical base. Nitrogen gas is present inside the conical base. The hollow tube is slidably connected to a piston on its inner wall, and the hollow tube, piston and conical base form an airtight environment. The air pressure on the inner wall of the hollow tube is lower than the external air pressure. The increased volume of the nitrogen gas due to heating can drive the piston upward.

[0004] In a preferred embodiment, a projection device can be placed inside the laser lamp protective box. The laser lamp protective box has a placement slot and two heat dissipation air outlets on both sides. The placement slot is located between the two heat dissipation air outlets and a temperature sensing mechanism can be placed inside the placement slot. The inner wall of the laser lamp protective box is provided with a liquid inlet groove, the inner wall of the liquid inlet groove is connected to a liquid outlet pipe, the other end of the liquid outlet pipe is connected to a liquid storage tank, one side of the liquid storage tank is fixedly installed on the rear side of the laser lamp protective box, and a heat shrink tubing is snapped into the inner wall of the liquid outlet pipe. The top of the liquid inlet tank is provided with multiple liquid passage channels, and the inner wall of the liquid passage channel can be fitted with a conical plug. The inner wall of the outlet pipe is connected to a threaded pipe, and the bottom end of the threaded pipe is threaded with a threaded cap. The heat shrink tubing is located at the connection between the outlet pipe and the threaded pipe.

[0005] In a preferred embodiment, a limiting ring is fixedly installed on the inner wall of the hollow tube. The limiting ring is located below the piston. A sector-shaped plate is provided between the limiting ring and the piston. The outer wall of the sector-shaped plate is airtightly slidably connected to the inner wall of the hollow tube. A pull rod is connected to the top of the piston. A rotating rod is airtightly rotatably connected to the inner wall of the pull rod. The bottom end of the rotating rod is fixedly installed on the top of the sector-shaped plate. The piston has a threaded groove on its inner wall, a liquid-permeable membrane is fixedly installed on the inner wall of the threaded groove, and an air extraction pipe is threadedly connected to the threaded groove.

[0006] In a preferred embodiment, a blocking rod is fixedly installed on the outer wall of the pull rod, and a hot air pipe and an air inlet pipe are connected to the outer wall of the hollow tube. The connection between the hot air pipe and the air inlet pipe and the hollow tube can be blocked by the blocking rod. The other end of the hot air pipe is connected to one side of the second horn, and the other end of the air inlet pipe is connected to a whistle.

[0007] In a preferred embodiment, a beveled circular plate is fixedly installed on the inner wall of the hollow tube, and a liquid control tube is connected to the inner wall of the hollow tube. The liquid control tube and the axis of symmetry of the beveled circular plate are on the same plane, and the bottom end of the liquid control tube is connected to the inner wall of the liquid outlet tube. The liquid control tube is located directly above the threaded tube.

[0008] In a preferred embodiment, the outer wall of the hollow tube is connected to a liquid replenishment tube, the inner wall of the liquid replenishment tube is airtightly rotatably connected to a hemisphere, the flat surface of the hemisphere is fixedly mounted with an optical axis, the outer wall of the optical axis passes through and is airtightly rotatably connected to the inner wall of the liquid replenishment tube, and a rectangular rod is fixedly mounted at the top end of the optical axis.

[0009] In a preferred embodiment, the outer wall of the replenishment tube is fitted with an n-shaped clamping rod, and the inner wall of the n-shaped clamping rod can be fitted onto the outer wall of the rectangular rod.

[0010] In addition, the present invention provides an alarm method for semiconductor heat dissipation of laser projection lamps, comprising the following steps: S1. When the temperature inside the vortex tube rises above 30°C, the nitrogen gas in the conical base heats up and its volume increases. The increased temperature and volume of the nitrogen gas pushes the piston, which in turn moves the pull rod and the blocking rod upward. Hot air from the hot gas pipe enters the air intake pipe. Whether the whistle makes a sound is used to determine whether the projection equipment has malfunctioned. S2. When the blocking rod no longer blocks the connection between the hot air pipe and the inlet pipe and the hollow pipe, part of the hot air in the hot air pipe enters the liquid control pipe. The heat shrinkability of the heat shrink tubing allows the ammonia in the outlet pipe to enter the liquid tank for auxiliary heat absorption. S3. After the liquid tank is filled with ammonia, the increased volume pushes the conical plug upward, allowing the ammonia to fully contact the air around the heat source and improve heat dissipation.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are as follows: I. This invention utilizes the combination of a vortex tube, a conical base, a hollow tube, a piston, a fan-shaped plate, a threaded groove, and a liquid-permeable membrane to increase the volume of nitrogen gas by several times by reducing the pressure. This enables the detection of the temperature of the projection equipment, overcoming the inability of temperature sensors to detect temperatures with wind speed. Furthermore, when vaporization occurs, the piston moves upward, allowing the whistle to come into contact with the wind speed and produce an audible warning. The device is also reusable, improving its practicality. II. This invention utilizes the cooperation between a hot air pipe, a liquid control pipe, a heat shrink tubing, a liquid inlet tank, and a conical plug. When hot air is introduced into the liquid control pipe through the hot air pipe, the heat shrink tubing shrinks, allowing ammonia gas to enter the liquid inlet tank. Simultaneously, the increased volume of the ammonia gas pushes the conical plug, causing the heat-dissipating electronic fluorinated liquid to enter the bottom of the laser lamp protective box and absorb heat from the air, thereby achieving auxiliary heat dissipation and improving the safety of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention: Figure 2 This is a three-dimensional structural diagram of the projection device of the present invention: Figure 3 This is a schematic diagram of the internal three-dimensional structure of the laser lamp protective box of the present invention: Figure 4 This is a schematic diagram of the internal three-dimensional structure of the liquid inlet tank of the present invention: Figure 5 for Figure 4 Enlarged view of point A in the middle: Figure 6 This is a three-dimensional structural diagram of the temperature sensing mechanism of the present invention: Figure 7 This is a three-dimensional structural diagram of the temperature sensing mechanism of the present invention: Figure 8 for Figure 7 Enlarged view at point B in the middle; Figure 9 This is a plan view of the air pressure inside the hollow tube of the present invention; Figure 10 This is a plan view of the hot air flow in the hollow tube of the present invention.

[0014] Attached reference numerals: 1. Laser light protective box; 10. Top cover; 11. Projection equipment; 12. Cooling fan end two; 13. Liquid storage tank; 14. Liquid outlet pipe; 15. Liquid inlet tank; 16. Liquid passage tank; 17. Conical plug; 18. Heat shrink tubing; 19. Threaded tube; 101. Threaded cap; 2. Temperature sensing mechanism; 20. Horn tube one; 21. Vortex tube; 22. Air outlet pipe; 23. Conical base; 24. Hollow tube 25. Piston; 26. Tie rod; 27. Fan-shaped plate; 28. Rotating rod; 29. ​​Threaded groove; 3. Liquid permeable membrane; 30. Air extraction pipe; 31. Limiting ring; 32. Blocking rod; 33. Hot air pipe; 34. Horn tube II; 35. Air inlet pipe; 36. Whistle; 37. Circular plate with inclined edge; 38. Liquid control pipe; 4. Liquid replenishment pipe; 40. Hemisphere; 41. Optical axis; 42. Rectangular rod; 43. N-shaped snap-fit ​​rod. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] The present invention will be further described below with reference to embodiments.

[0017] Example: Refer to Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 10 This invention provides a technical solution: a semiconductor heat dissipation alarm device and method for laser projection lamps, comprising: a laser lamp protective box 1, a projection device 11, and a temperature sensing mechanism 2. The projection device 11 has a heat dissipation air end on both sides. In the temperature sensing mechanism 2, the second horn tube 34 and the first horn tube 20 are at the same height as the first heat dissipation air end. A vortex tube 21 is connected to one side of the first horn tube 20. A conical base 23 is fixedly installed on the spiral inner wall of the vortex tube 21. A hollow tube 24 is connected to the top of the conical base 23. Nitrogen gas is contained inside the conical base 23. The inner wall of the hollow tube 24 is airtightly slidably connected to the piston 25, and the hollow tube 24, piston 25 and conical base 23 form an airtight environment. The air pressure on the inner wall of the hollow tube 24 is lower than the external air pressure. When the nitrogen gas is heated and its volume increases, it can drive the piston 25 upward.

[0018] like Figures 1 to 5 As shown, a projection device 11 can be placed inside the laser lamp protective box 1. Placement slots and two heat dissipation air outlets 12 are provided on both sides of the laser lamp protective box 1. The placement slots are located between the two heat dissipation air outlets 12. A temperature sensing mechanism 2 can be placed inside the placement slots. A liquid inlet trough 15 is provided on the inner wall of the laser lamp protective box 1. A liquid outlet pipe 14 is connected to the inner wall of the liquid inlet trough 15. The other end of the liquid outlet pipe 14 is connected to a liquid storage tank 13. One side of the liquid storage tank 13 is fixedly installed on the rear side of the laser lamp protective box 1. A heat shrink tubing 18 is snapped onto the inner wall of the liquid outlet pipe 14. Multiple liquid passage slots 16 are provided at the top inner part of the liquid inlet trough 15. A conical plug 17 can be snapped onto the inner wall of the liquid passage slot 16. A threaded pipe 19 is connected to the inner wall of the liquid outlet pipe 14. A threaded cap 101 is threadedly connected to the bottom end of the threaded pipe 19. The heat shrink tubing 18 is located at the connection between the liquid outlet pipe 14 and the threaded pipe 19.

[0019] When nitrogen is present below the conical base 23 and piston 25, and the hollow tube 24 is in a hollow state with a pressure lower than the external pressure, based on the "Key Physical Parameters of Nitrogen," the boiling point of nitrogen is affected by pressure. When the temperature of the inner vent of the heat dissipation fan end of the projection device 11 rises to over forty degrees Celsius, the boiling point of nitrogen will change with pressure: the boiling point decreases when the pressure decreases, and the boiling point increases when the pressure increases. This increase in the product of boiling point and pressure will slowly push piston 25 upward, as shown in the attached diagram. Figure 10 As shown, some of the hot air entering the hot air pipe 33 will enter the air inlet pipe 35. Due to the wind speed, the whistle 36 will make a sound to remind the staff that the projection equipment 11 or the heat dissipation system has malfunctioned. In order to allow the conical base 23 to come into contact with more heat sources and transfer them to nitrogen, the contact area between the conical base 23 and the vortex tube 21 can be increased by the shape of the vortex tube 21. At the same time, the second horn tube 34 and the first horn tube 20 collect more hot air into the hot air pipe 33 and the vortex tube 21. Simultaneously, after the hot air in the hot air pipe 33 enters the hollow pipe 24, some of the hot air will also enter the liquid control pipe 38, and finally the hot air will come into contact with the attached... Figure 5 As shown, when the heat shrink tubing 18 comes into contact with hot air at a temperature of over 40 degrees Celsius, it will undergo a heat shrinking physical change, reducing its volume and preventing the heat dissipation electronic fluorinated liquid in the outlet tube 14 from becoming blocked. Finally, it enters the inlet tank 15. In order to increase the maintenance time for staff and to slow down the heating rate of the projection equipment 11, when the ammonia in the inlet tank 15 is full, the increased volume of the heated ammonia will push the conical plug 17 upward, allowing the bottom of the laser lamp protective box 1 to have ammonia for auxiliary heat dissipation, thereby slowing down the heating rate of the projection equipment 11. The heat shrink tubing 18 uses readily available low-shrinkage-temperature PVC heat shrink tubing, which is low-cost and flexible. It begins to soften and shrink at 40°C and is essentially finished shrinking by 50°C. When used with the projection device 11, it will not shrink under normal heat dissipation temperatures below 40°C. The projection device 11 has support feet at the bottom, which do not press against the conical plug 17, preventing the plug from failing to float. When replacing the heat shrink tubing 18, the operator simply needs to manually rotate the threaded cap 101 and insert the heat shrink tubing 18 into the threaded tube 19. See the attached document for details. Figure 5 As shown.

[0020] like Figures 7 to 10As shown, a limiting ring 31 is fixedly installed on the inner wall of the hollow tube 24. The limiting ring 31 is located below the piston 25. A sector-shaped plate 27 is located between the limiting ring 31 and the piston 25. The outer wall of the sector-shaped plate 27 is airtightly slidably connected to the inner wall of the hollow tube 24. A pull rod 26 is connected to the top of the piston 25. A rotating rod 28 is airtightly rotatably connected to the inner wall of the pull rod 26. The bottom end of the rotating rod 28 is fixedly installed on the top of the sector-shaped plate 27. A screw is provided on the inner wall of the piston 25. A liquid-permeable membrane 3 is fixedly installed on the inner wall of the groove 29. The groove 29 is threadedly connected to an air extraction pipe 30. A blocking rod 32 is fixedly installed on the outer wall of the pull rod 26. A hot air pipe 33 and an air inlet pipe 35 are connected to the outer wall of the hollow tube 24. The connection between the hot air pipe 33 and the air inlet pipe 35 and the hollow tube 24 can be blocked by the blocking rod 32. The other end of the hot air pipe 33 is connected to one side of the second horn tube 34. The other end of the air inlet pipe 35 is connected to a whistle 36.

[0021] With nitrogen present below piston 25 and inside conical base 23, the hollow tube 24 needs to be in a hollow state, where the internal pressure of the hollow tube 24 is lower than the external pressure, as shown in the attached diagram. Figure 9 As shown, the shaded area C is the air section, similar to an air cushion space. Then, the rotating rod 28 is manually rotated to drive the fan-shaped plate 27 away from directly below the liquid permeable membrane 3. Then, the suction pipe 30 is manually threaded into the inner wall of the threaded groove 29. Subsequently, the other end of the suction pipe 30 is connected to an external suction device. The suction process is slow and intermittent. After the suction is completed, the operator first manually rotates the rotating rod 28 to drive the fan-shaped plate 27 to move directly below the liquid permeable membrane 3 for blocking. Then, the operator manually rotates the suction pipe 30 to disengage it from the threaded groove 29, thereby reducing the weight of the piston 25. When the piston 25 and the pull rod 26 are pushed upward, the blocking rod 32 cannot block the connection between the hot air pipe 33 and the whistle 36 and the hollow pipe 24, so that the air intake pipe 35 can enter the air velocity and make the whistle 36 make a sound. To clarify, the liquid-permeable membrane 3 uses existing commercially available microporous filter membranes, such as PTFE microporous membranes and nylon microporous membranes, with pores of 0.22-0.45μm, which are liquid-resistant and breathable. The conical base 23 uses copper foil or aluminum foil to improve the heat conduction effect. At the same time, a small amount of petroleum jelly or silicone-based lubricating oil can be applied to the edge of the piston 25 to enhance the sealing performance and reduce the frictional resistance of piston movement.

[0022] like Figures 7 to 10As shown, a beveled circular plate 37 is fixedly installed on the inner wall of the hollow tube 24. A liquid control tube 38 is connected to the inner wall of the hollow tube 24. The liquid control tube 38 and the beveled circular plate 37 are on the same plane. The bottom end of the liquid control tube 38 is connected to the inner wall of the liquid outlet tube 14. The liquid control tube 38 is located directly above the threaded tube 19. A replenishment tube 4 is connected to the outer wall of the hollow tube 24. A hemisphere 40 is airtightly rotatably connected to the inner wall of the replenishment tube 4. An optical axis 41 is fixedly installed on the flat surface of the hemisphere 40. The outer wall of the optical axis 41 passes through and is airtightly rotatably connected to the inner wall of the replenishment tube 4. A rectangular rod 42 is fixedly installed at the top of the optical axis 41. An n-shaped clamping rod 43 is snapped onto the outer wall of the replenishment tube 4. The inner wall of the n-shaped clamping rod 43 can be snapped onto the outer wall of the rectangular rod 42.

[0023] In order to reduce the cost of the temperature sensing mechanism 2 and make it reusable, when the conical base 23 needs to be replenished with nitrogen, the operator can manually rotate the rectangular rod 42 to drive the hemisphere 40 to open the inner wall of the replenishment tube 4, and then introduce nitrogen into the inner wall of the replenishment tube 4. Then, the rectangular rod 42 is rotated in the opposite direction to drive the hemisphere 40 to close the inner wall of the replenishment tube 4. Finally, the n-shaped locking rod 43 is locked onto the outer wall of the replenishment tube 4 and sleeved on the outer wall of the rectangular rod 42 to prevent the hemisphere 40 from rotating automatically during the subsequent evacuation process. As attached Figure 10 As shown, after the hot air pipe 33 is not blocked by the blocking rod 32, some of the hot air in the hot air pipe 33 will enter the inner wall of the liquid control pipe 38. However, in order to increase the heat shrink tube 18 to contact more heat sources in the hot air, the diffusing hot air in the hot air pipe 33 is restricted from entering the liquid control pipe 38 by the inclined circular plate 37, thereby increasing the heat shrinking speed of the heat shrink tube 18.

[0024] Preferably, the present invention provides an alarm method for semiconductor heat dissipation of a laser projection lamp, comprising the following steps: S1. When the temperature inside the vortex tube 21 rises above 30°C, the nitrogen gas in the conical base 23 heats up and its volume increases. The increased temperature and volume of the nitrogen gas pushes the piston 25 to drive the pull rod 26 and the blocking rod 32 to move upward. The hot air in the hot air pipe 33 enters the air inlet pipe 35. Whether the whistle 36 makes a sound is used to determine whether the projection device 11 has malfunctioned. S2. When the blocking rod 32 no longer blocks the connection between the hot air pipe 33 and the air inlet pipe 35 and the hollow pipe 24, part of the hot air in the hot air pipe 33 enters the liquid control pipe 38, and the ammonia in the liquid outlet pipe 14 enters the liquid inlet tank 15 for auxiliary heat absorption by utilizing the heat shrinkable tube 18. S3. When the liquid inlet tank 15 is filled with ammonia, the increased volume pushes the conical plug 17 upward, allowing the ammonia to fully contact the air around the heat source and improve heat dissipation.

[0025] Working principle: When the conical base 23 needs to be replenished with nitrogen, the operator can manually rotate the rectangular rod 42 to drive the hemisphere 40 to open the inner wall of the replenishment tube 4, and then introduce nitrogen into the inner wall of the replenishment tube 4. Then, rotate the rectangular rod 42 in the opposite direction to drive the hemisphere 40 to close the inner wall of the replenishment tube 4. Finally, the n-shaped locking rod 43 is locked onto the outer wall of the replenishment tube 4 and sleeved on the outer wall of the rectangular rod 42. After nitrogen is present below piston 25 and inside conical base 23, manually rotate rotating rod 28 to drive sector 27 away from directly below liquid permeable membrane 3. Then manually thread the suction pipe 30 into the inner wall of threaded groove 29. Subsequently, connect the other end of suction pipe 30 to external suction equipment. After suction is completed, the operator first manually rotates rotating rod 28 to drive sector 27 to move directly below liquid permeable membrane 3 for blocking. Then manually rotate suction pipe 30 to disengage from threaded groove 29. When the temperature of the inner air vent of the heat dissipation end of the projection device 11 rises to more than 40 degrees, the volume of nitrogen gas increases due to heat. The increase in nitrogen gas volume will slowly push the piston 25 to move upward. Some of the hot air entering the hot air pipe 33 will enter the air intake pipe 35, which will cause the whistle 36 to make a sound to remind the staff that the projection device 11 or the heat dissipation system has malfunctioned. When the hot air in the hot air pipe 33 enters the hollow pipe 24, some of the hot air will enter the liquid control pipe 38. The hot air will come into contact with the heat shrink tubing 18, which will cause a heat shrink physical change. The heat shrink tubing 18 shrinks in volume, so that the ammonia in the liquid outlet pipe 14 is no longer blocked. Finally, it enters the liquid inlet tank 15. When the ammonia in the liquid inlet tank 15 is full, the increased volume due to heating will push the conical plug 17 to move upward, so that the bottom of the laser lamp protective box 1 is filled with heat dissipation electronic fluorinated liquid.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A semiconductor heat dissipation alarm device for laser projection lamps, characterized in that, include: The laser lamp protective box (1), the projection device (11) and the temperature sensing mechanism (2) are provided. The projection device (11) has a heat dissipation end on both sides. The second horn tube (34) and the first horn tube (20) in the temperature sensing mechanism (2) are at the same height as the first heat dissipation end. A vortex tube (21) is connected to one side of the first horn tube (20). A conical base (23) is fixedly installed on the spiral inner wall of the vortex tube (21). A hollow tube (24) is connected to the top of the conical base (23). Nitrogen gas is present inside the conical base (23). The hollow tube (24) is airtightly slidably connected to a piston (25), and the hollow tube (24), piston (25) and conical base (23) form an airtight environment. The air pressure inside the hollow tube (24) is less than the outside air pressure. The nitrogen gas increases in volume when heated, which can drive the piston (25) upward.

2. The semiconductor heat dissipation alarm device for laser projection lamps according to claim 1, characterized in that: The laser lamp protective box (1) can hold a projection device (11). The laser lamp protective box (1) has a placement slot and two heat dissipation air end two (12) on both sides. The placement slot is located between the two heat dissipation air end two (12). The placement slot can hold a temperature sensing mechanism (2). The inner wall of the laser lamp protective box (1) is provided with a liquid inlet groove (15), the inner wall of the liquid inlet groove (15) is connected to a liquid outlet pipe (14), the other end of the liquid outlet pipe (14) is connected to a liquid storage tank (13), one side of the liquid storage tank (13) is fixedly installed on the rear side of the laser lamp protective box (1), and the inner wall of the liquid outlet pipe (14) is snapped with a heat shrink tubing (18). The inner top of the liquid inlet tank (15) is provided with a plurality of liquid passage channels (16), and the inner wall of the liquid passage channel (16) can be fitted with a conical plug (17). The inner wall of the outlet pipe (14) is connected to a threaded pipe (19), and the bottom end of the threaded pipe (19) is threadedly connected to a threaded cap (101). The heat shrink tube (18) is located at the connection between the outlet pipe (14) and the threaded pipe (19).

3. The semiconductor heat dissipation alarm device for laser projection lamps according to claim 1, characterized in that: A limiting ring (31) is fixedly installed on the inner wall of the hollow tube (24). The limiting ring (31) is located below the piston (25). There is a fan-shaped plate (27) between the limiting ring (31) and the piston (25). The outer wall of the fan-shaped plate (27) is airtightly slidably connected to the inner wall of the hollow tube (24). The top end of the piston (25) is connected to a pull rod (26). The inner wall of the pull rod (26) is airtightly rotatably connected to a rotating rod (28). The bottom end of the rotating rod (28) is fixedly installed on the top end of the fan-shaped plate (27). The piston (25) has a threaded groove (29) on its inner wall. A liquid-permeable membrane (3) is fixedly installed on the inner wall of the threaded groove (29). The threaded groove (29) is threadedly connected to a suction pipe (30).

4. The semiconductor heat dissipation alarm device for laser projection lamps according to claim 3, characterized in that: A blocking rod (32) is fixedly installed on the outer wall of the pull rod (26). The outer wall of the hollow tube (24) is connected to a hot air pipe (33) and an air inlet pipe (35). The connection between the hot air pipe (33) and the air inlet pipe (35) and the hollow tube (24) can be blocked by the blocking rod (32). The other end of the hot air pipe (33) is connected to one side of the second horn (34). The other end of the air inlet pipe (35) is connected to a whistle (36).

5. The semiconductor heat dissipation alarm device for laser projection lamps according to claim 3, characterized in that: The hollow tube (24) has a beveled circular plate (37) fixedly installed on its inner wall. The inner wall of the hollow tube (24) is connected to a liquid control tube (38). The liquid control tube (38) and the beveled circular plate (37) are on the same plane. The bottom end of the liquid control tube (38) is connected to the inner wall of the liquid outlet tube (14). The liquid control tube (38) is located directly above the threaded tube (19).

6. The semiconductor heat dissipation alarm device for laser projection lamps according to claim 5, characterized in that: The outer wall of the hollow tube (24) is connected to a liquid replenishment tube (4). The inner wall of the liquid replenishment tube (4) is airtightly rotatably connected to a hemisphere (40). An optical axis (41) is fixedly installed on the flat surface of the hemisphere (40). The outer wall of the optical axis (41) passes through and is airtightly rotatably connected to the inner wall of the liquid replenishment tube (4). A rectangular rod (42) is fixedly installed at the top of the optical axis (41).

7. The semiconductor heat dissipation alarm device for laser projection lamps according to claim 6, characterized in that: The outer wall of the replenishment tube (4) is fitted with an n-shaped clamping rod (43), and the inner wall of the n-shaped clamping rod (43) can be fitted onto the outer wall of the rectangular rod (42).

8. An alarm method for semiconductor heat dissipation in a laser projection lamp according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1. When the temperature inside the vortex tube (21) rises above 30°C, the nitrogen gas in the conical base (23) heats up and its volume increases. The increased temperature and volume of the nitrogen gas pushes the piston (25) to drive the pull rod (26) and the blocking rod (32) to move upward. The hot air in the hot air pipe (33) enters the air inlet pipe (35). Whether the whistle (36) makes a sound is used to determine whether the projection device (11) has malfunctioned. S2. When the blocking rod (32) no longer blocks the connection between the hot air pipe (33) and the air inlet pipe (35) and the hollow pipe (24), a portion of the hot air in the hot air pipe (33) enters the liquid control pipe (38), and the ammonia in the liquid outlet pipe (14) enters the liquid inlet tank (15) for auxiliary heat absorption by utilizing the heat shrinkability of the heat shrink tube (18). S3. When the liquid tank (15) is filled with ammonia, the conical plug (17) is pushed upward by the increase in volume, so that the ammonia can fully contact the air around the heat source and improve heat dissipation.

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