Integrally die-cast LED railway signal lamp heat dissipation box body

Abstract

The invention provides an integrally die-cast LED railway signal lamp heat dissipation box, and relates to the technical field of heat dissipation boxes, the integrally die-cast LED railway signal lamp heat dissipation box comprises an integrated die-casting box, a control assembly and a temperature sensor are installed in the integrated die-casting box, a connecting block is installed on one side of the integrated die-casting box, an installation block is arranged on the connecting block, and the installation block is used for installing a signal lamp. A heat dissipation mechanism is arranged on the upper side of the integrated die-casting box, and the heat dissipation mechanism, the signal lamp, the control assembly and the temperature sensor are electrically connected. According to the invention, by adopting the design of the integrated die-cast box body, the sealing performance and the heat conduction continuity of the box body are greatly improved, external dust, rainwater and other impurities can be effectively prevented from invading the box, and short circuit or poor contact caused by damp and dust accumulation of the control assembly and the signal lamp driving module is avoided; on the other hand, the box body can quickly conduct heat generated when the signal lamp and the control assembly work.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation box technology, specifically to an integrated die-cast heat dissipation box for LED railway signal lights. Background Technology

[0002] Railway signal light boxes are key supporting devices for railway signaling systems. They are mainly used to carry and protect LED signal lights, control components, temperature sensors, and other electrical components. At the same time, they realize heat dissipation, protection, and intelligent control functions, ensuring the stable operation of signal lights under complex outdoor conditions and providing support for railway traffic safety.

[0003] Existing railway signal light boxes mostly adopt a modular structure, which is assembled from multiple metal plates by bolts, welding, and other methods. Gaps exist at the joints of the box, resulting in poor sealing and thermal conductivity of the overall structure. The heat generated when the signal lights are working, as well as the heat dissipated by the control components inside the box, cannot be quickly conducted to the outside through the box. A large amount of heat accumulates inside the box, creating a localized high-temperature environment. The continuous high temperature environment will seriously affect the luminous efficiency and lifespan of the signal lights, leading to accelerated light source decay and frequent burnout of the signal lights. At the same time, the control components inside the box will also experience malfunctions such as malfunctions and jamming due to high temperatures. This not only significantly increases the operation and maintenance costs of railway signal equipment, but also causes misinterpretation of railway traffic signals due to signal light malfunctions, posing a serious threat to railway traffic safety. Summary of the Invention

[0004] The present invention provides an integrated die-cast heat sink housing for LED railway signal lights to solve at least one of the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention discloses an integrated die-cast LED railway signal light heat dissipation box, including an integrated die-cast box, a control component and a temperature sensor installed inside the integrated die-cast box, a connecting block installed on one side of the integrated die-cast box, an mounting block provided on the connecting block, the mounting block being used to install the signal light, a heat dissipation mechanism provided on the upper side of the integrated die-cast box, and the heat dissipation mechanism, the signal light, the control component and the temperature sensor being electrically connected.

[0006] Preferably, a fixing component is provided on the other side of the integrated die-casting box; an opening and closing door is provided on the front side of the integrated die-casting box, and a sealing ring is provided on the opening and closing door; an L-shaped connecting pipe is connected to the rear side of the integrated die-casting box, and a filter screen is provided inside the L-shaped connecting pipe.

[0007] Preferably, the heat dissipation mechanism includes a heat dissipation frame, a plurality of heat dissipation motors are provided on the upper inner wall of the heat dissipation frame, fan blades are fixedly connected to the output end of the heat dissipation motors, a plurality of through holes and mounting slots are provided on the upper side wall of the integrated die-casting box, a filter screen is installed in the mounting slot, and the heat dissipation frame is installed on the upper side of the filter screen.

[0008] Preferably, the temperature sensor is an NTC thermistor sensor, and two temperature sensors are provided, which are respectively arranged on the surface of the main control board of the control component in the integrated die-casting box and the heating end of the signal light drive module; The control component is preset with three temperature threshold levels, including a first temperature threshold. Second temperature threshold and the third temperature threshold ,and < < ; The control component receives data collected by each temperature sensor, removes outliers exceeding the measurement range, and calculates the average temperature as the real-time temperature value. ; when ≤ At that time, the control component controls all cooling motors to shut down and stop operating; when < ≤ At that time, the control component controls half of the cooling motors to operate at a first preset speed. run; when < ≤ At that time, the control component controls all cooling motors to operate at the second preset speed. run, > ; when > At that time, the control component controls all cooling motors to operate at their rated speeds. run.

[0009] Preferably, the control component incorporates a speed closed-loop regulation model, and the calculation formula for the model is: ; in, The actual output speed of the cooling motor (8); The preset rotation speed for the corresponding temperature range; This is the real-time temperature value; This represents the critical threshold for the corresponding temperature range; The external ambient temperature of the enclosure; Standard ambient temperature; The formula for calculating the speed regulation coefficient K is as follows: ; In the formula, The reference speed adjustment coefficient; , This represents the actual operating power of the traffic light. This is the rated reference power for the traffic lights; The power adjustment step size is set to 5W. This represents the coefficient increment corresponding to a single step size, with a value of 5r / (min·℃). The formula for calculating the ambient temperature compensation coefficient Kenv is as follows: ; In the formula, The baseline ambient temperature compensation coefficient is set at 15 r / (min·℃). This is the environmental impact correction factor, with a value range of 0.5-0.7; ;when When <0, Values ;when At temperatures below -10℃, Values *0.8.

[0010] Preferably, each of the cooling motors is equipped with a Hall effect speed sensor at its output terminal. The Hall effect speed sensor is electrically connected to the control component and is used to provide real-time feedback on the actual speed of the cooling motor. When the absolute value of the deviation between the feedback speed and the set speed If the speed exceeds the set speed by 5% and the duration exceeds 3 seconds, the control component determines that the speed is abnormal and performs speed compensation adjustment. The compensated speed is... At the same time, speed correction is achieved by increasing the drive current of the cooling motor.

[0011] Preferably, a power adjustment module is provided between the control component and the signal light, and the power adjustment module is used to adjust the working power of the signal light based on the real-time temperature of the enclosure; when > Furthermore, even after the cooling motor ran at its rated speed for more than 10 minutes, the real-time temperature still did not drop to the required level. In the following situations, the control component reduces the operating power of the signal light by 30%-50% through the power adjustment module. ,in The power attenuation coefficient, The value of the value exceeds the real-time temperature. The difference is positively correlated; for every 5°C increase in the difference, the value of λ increases by 10%. When the chamber temperature drops to... In the following situations, the control component will restore the indicator lights to their rated power operation.

[0012] Preferably, the control component has a built-in sensor fault diagnosis module, which monitors the output signals of the temperature sensor and the Hall speed sensor. When the output signal of the temperature sensor exceeds its range, the output signal of the Hall speed sensor exceeds its range, or there is no signal output for 5 seconds, the corresponding sensor is determined to be faulty. If a single temperature sensor fails, the control component automatically switches to the data collected by the other temperature sensor for control. If both temperature sensors fail, the control component controls all cooling motors to run at their rated speed. If the Hall speed sensor fails, the control component outputs a fixed drive current according to the calculated value of the speed closed-loop regulation model.

[0013] Preferably, it further includes a graded alarm component and a wireless communication module, both of which are electrically connected to the control component; the graded alarm component includes a primary alarm unit and a secondary alarm unit; when < ≤ When, the control component controls the primary alarm unit to start; when > In the event of a fault in the sensor or cooling motor, the control components will simultaneously activate the first and second level alarm units and upload data such as fault type, real-time temperature, motor speed, and power attenuation coefficient to the railway signal maintenance terminal via the wireless communication module.

[0014] Preferably, the control component has a built-in low-power control module, which is used to control the system to enter a sleep state when the enclosure is not in operation; when the indicator lights are off and the real-time temperature of the enclosure is... ≤ When the temperature sensor enters intermittent sampling mode, with a sampling interval of 5 minutes and a sampling duration of 10 seconds, the power supply to the cooling motor is simultaneously cut off. When the intermittently sampled temperature value exceeds... At this time, the control component wakes up the system, restoring the real-time acquisition of temperature sensors and the standby state of the heat dissipation motor.

[0015] Compared with existing technologies, this invention provides an integrated die-cast LED railway signal light heat dissipation box, which has the following advantages: The integrated die-cast box design significantly improves the sealing performance and thermal conductivity of the box, effectively preventing external dust, rainwater and other impurities from entering the box, and avoiding short circuits or poor contact caused by moisture or dust accumulation in the control components and signal light drive modules; on the other hand, the box can quickly conduct the heat generated by the signal lights and control components during operation; by arranging temperature sensors on the main control board of the control components and the heat-generating end of the signal light drive module, combined with the upper heat dissipation mechanism to form a closed-loop temperature control system, the temperature status of key heat-generating components inside the box can be monitored in real time, achieving a balance between heat dissipation efficiency and energy consumption control. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 For the present invention Figure 1 Side view.

[0017] In the diagram: 1. Integrated die-cast box; 2. Opening door; 3. Fixing component; 4. Heat dissipation mechanism; 5. Connecting block; 6. Mounting block; 7. Filter screen two; 8. Heat dissipation motor; 9. Heat dissipation frame; 10. Filter screen one; 11. Through hole; 12. Fan blade; 13. Sealing ring; 14. L-shaped connecting pipe. Detailed Implementation

[0018] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Example 1: An embodiment of the present invention provides an integrated die-cast LED railway signal light heat sink housing, such as... Figures 1-3 As shown, it includes an integrated die-casting box 1, in which control components and a temperature sensor are installed. A connecting block 5 is installed on one side of the integrated die-casting box 1, and a mounting block 6 is provided on the connecting block 5. The mounting block 6 is used to install a signal light. A heat dissipation mechanism 4 is provided on the upper side of the integrated die-casting box 1. The heat dissipation mechanism 4, the signal light, the control components and the temperature sensor are electrically connected.

[0022] The working principle and beneficial effects of the above technical solution are as follows: The signal light is precisely assembled on one side of the enclosure via mounting block 6 and connecting block 5, achieving electrical connection with the control components inside the enclosure. When the enclosure is working, the built-in temperature sensor collects the operating temperature data of the control components and the signal light drive module in real time and transmits the temperature signal to the control components. Based on the preset temperature control logic, the control components output control commands to the heat dissipation mechanism 4 on the upper side of the integrated die-casting enclosure 1. After the heat dissipation mechanism 4 is activated, air convection is formed inside and outside the enclosure, quickly removing the heat accumulated inside the enclosure. Finally, a closed-loop working system of real-time temperature monitoring, intelligent command transmission, and active heat dissipation regulation is constructed to ensure that the signal light and control components operate stably in a suitable temperature environment.

[0023] The integrated die-cast enclosure design significantly improves the enclosure's sealing performance and thermal conductivity, effectively preventing external dust, rainwater, and other impurities from entering the enclosure and avoiding short circuits or poor contact in the control components and signal light drive modules due to moisture or dust accumulation. On the other hand, the enclosure can quickly conduct heat generated by the signal lights and control components during operation. By placing temperature sensors on the main control board of the control components and the heat-generating ends of the signal light drive modules, combined with the heat dissipation mechanism 4 to form a closed-loop temperature control system, the temperature status of key heat-generating components inside the enclosure can be monitored in real time, achieving a balance between heat dissipation efficiency and energy consumption control.

[0024] Example 2: Based on Example 1 above, as follows Figures 1-3 As shown, a fixing part 3 is provided on the other side of the integrated die-casting box 1; an opening and closing door 2 is provided on the front side of the integrated die-casting box 1, and a sealing ring 13 is provided on the opening and closing door 2; an L-shaped connecting pipe 14 is connected to the rear side of the integrated die-casting box 1, and a filter screen 7 is provided inside the L-shaped connecting pipe 14.

[0025] Preferably, the heat dissipation mechanism 4 includes a heat dissipation frame 9, and a plurality of heat dissipation motors 8 are provided on the upper inner wall of the heat dissipation frame 9. The output end of the heat dissipation motor 8 is fixedly connected to a fan blade 12. A plurality of through holes 11 and a mounting groove are provided on the upper side wall of the integrated die-casting box 1. A filter screen 10 is installed in the mounting groove, and the heat dissipation frame 9 is installed on the upper side of the filter screen 10.

[0026] The working principle and beneficial effects of the above technical solution are as follows: The front opening door 2 is designed for maintenance. Staff can directly open the opening door 2 to inspect, maintain or replace electrical components such as control components and temperature sensors inside the box. The sealing ring 13 on the opening door 2 achieves the sealing protection of the box after closing, effectively preventing rainwater and dust from entering the box. The rear L-shaped connecting pipe 14 serves as an auxiliary ventilation channel for the box. The built-in filter screen 7 can perform preliminary filtration of the air entering the box, reducing dust and impurities adhering to the surface of electrical components. The upper heat dissipation mechanism 4 forms an independent heat dissipation air duct through the heat dissipation frame 9. When the control component receives the high temperature signal from the temperature sensor, it drives the heat dissipation motor 8 in the heat dissipation frame 9 to drive the fan blade 12 to rotate. Outside air enters through the heat dissipation frame 9, passes through the filter screen 10 to filter impurities, and then enters the box through the through hole 11 on the upper side wall of the integrated die-casting box 1. Then it is discharged through the L-shaped connecting pipe 14 of the built-in filter screen 7, forming a convective heat exchange with the high temperature air in the box, and finally dissipating the heat outside the box, completing the active heat dissipation cycle. The structure is simple and the heat dissipation effect is better.

[0027] Example 3: The temperature sensor is an NTC thermistor sensor. Two temperature sensors are provided, which are respectively located on the surface of the main control board of the control component inside the integrated die-casting box 1 and the heating end of the signal light drive module. The control component is preset with three temperature threshold levels, including a first temperature threshold. (40℃), second temperature threshold (55℃), and the third temperature threshold (70℃), and < < ; The control component receives data collected by each temperature sensor, removes outliers exceeding the measurement range (-40℃-120℃), and calculates the average temperature as the real-time temperature value. ; when ≤ At that time, the control component controls all 8 cooling motors to shut down and stop operating; when < ≤ At that time, the control component controls half of the cooling motors 8 to operate at a first preset speed. (Run at 1200 r / min) when < ≤ At that time, the control component controls all the cooling motors 8 to operate at the second preset speed. (Run at 2000 r / min) > ; when > At that time, the control component controls all 8 cooling motors to operate at their rated speeds. Run at 2800 r / min.

[0028] The beneficial effects of the above technical solution are as follows: By using two NTC thermistor sensors, which are respectively deployed on the main control board of the control component and the signal light driver module, which are two key heat-generating components, compared with single sensor monitoring, the core heat source inside the box can be fully covered, avoiding the problem of missing monitoring of local high temperature; at the same time, by eliminating abnormal data that exceeds the range and calculating the average temperature as the control basis, the interference of abnormal sensor signals is effectively filtered, the temperature acquisition accuracy is improved, and accurate data support is provided for the subsequent execution of temperature control logic, eliminating insufficient or excessive heat dissipation caused by temperature misjudgment; Based on a three-level control strategy that clearly defines temperature thresholds (40℃ / 55℃ / 70℃) and corresponding speeds and the number of motors in operation, a differentiated heat dissipation mode is constructed: at low temperatures, the cooling motors are shut off to avoid unnecessary energy consumption; at medium temperatures, half of the motors are started and run at low speeds to meet basic heat dissipation needs; at high temperatures, all motors run at high speeds / rated speeds to enhance heat dissipation capacity. This "on-demand control" approach avoids the inefficiency of traditional single-start-stop cooling and prevents energy waste caused by continuous full-load operation, achieving a dynamic balance between heat dissipation effect and energy consumption cost.

[0029] Example 4: Based on Example 3, the control component incorporates a speed closed-loop regulation model, and the calculation formula for the model is as follows: ; in, This refers to the actual output speed of the cooling motor 8; The preset rotation speed for the corresponding temperature range; This is the real-time temperature value; This represents the critical threshold for the corresponding temperature range; The external ambient temperature of the enclosure; Standard ambient temperature (25℃); The formula for calculating the speed regulation coefficient K is as follows: ; In the formula, The reference speed adjustment coefficient is set at 50 r / (min·℃). , This represents the actual operating power of the traffic light. The rated reference power of the traffic light is 20W. The power adjustment step size is set to 5W. This represents the coefficient increment corresponding to a single step size, with a value of 5r / (min·℃). The formula for calculating the ambient temperature compensation coefficient Kenv is as follows: ; In the formula, The baseline ambient temperature compensation coefficient is set at 15 r / (min·℃). This is the environmental impact correction factor, with a value range of 0.5-0.7; ;when When <0, Values ;when At temperatures below -10℃, Values *0.8.

[0030] Preferably, each output terminal of the cooling motor 8 is equipped with a Hall speed sensor, which is electrically connected to the control component to provide real-time feedback on the actual speed of the cooling motor 8. When the absolute value of the deviation between the feedback speed and the set speed If the speed exceeds the set speed by 5% and the duration exceeds 3 seconds, the control component determines that the speed is abnormal and performs speed compensation adjustment. The compensated speed is... At the same time, speed correction is achieved by increasing the drive current of the cooling motor.

[0031] The beneficial effects of the above technical solution are as follows: By building a closed-loop speed regulation model, it overcomes the limitations of the graded fixed speed regulation in Example 3, and innovatively introduces the power correlation coefficient of the signal light and the ambient temperature compensation coefficient to achieve refined dynamic calculation of the cooling motor speed. The speed regulation coefficient K is positively correlated with the actual working power of the signal light. The higher the power of the signal light, the larger the K value, and the more significant the increase in motor speed, which can accurately match the high heat load heat dissipation requirements under high power. The ambient temperature compensation coefficient Kenv is corrected according to the external temperature deviation to avoid the problem of insufficient or excessive heat dissipation caused by environmental differences such as high temperature in summer and low temperature in winter, making the speed regulation more in line with the complex and variable actual working conditions outdoors.

[0032] The control components automatically perform speed compensation adjustment, correcting speed deviations by increasing the drive current to ensure that the actual motor speed always matches the theoretically set speed. This design effectively avoids speed drift caused by changes in motor load, voltage fluctuations, or mechanical failures, ensuring stable airflow in the cooling duct and maintaining consistent heat dissipation efficiency. The automatic speed deviation compensation mechanism can promptly correct abnormal motor operation, reducing high-temperature faults inside the enclosure caused by insufficient speed or increased motor wear caused by excessive speed.

[0033] Example 5: Based on Examples 3-4 above, a power adjustment module is provided between the control component and the signal light. This power adjustment module is used to adjust the operating power of the signal light based on the real-time temperature of the enclosure. > Furthermore, even after the cooling motor 8 ran at its rated speed for more than 10 minutes, the real-time temperature still did not drop to the required level. In the following situations, the control component reduces the operating power of the signal light by 30%-50% through the power adjustment module. ,in The power attenuation coefficient, The value of the value exceeds the real-time temperature. The difference is positively correlated; for every 5°C increase in the difference, the value of λ increases by 10%. When the chamber temperature drops to... In the following situations, the control component will restore the indicator lights to their rated power operation.

[0034] Preferably, the control component incorporates a built-in sensor fault diagnosis module, which monitors the output signals of the temperature sensor and the Hall speed sensor. When the output signal of the temperature sensor exceeds its range (-40℃-120℃), the output signal of the Hall speed sensor exceeds its range (0-3000r / min), or there is no signal output for 5 seconds, the corresponding sensor is determined to be faulty. If a single temperature sensor fails, the control component automatically switches to the data collected by the other temperature sensor for control. If both temperature sensors fail, the control component controls all the cooling motors 8 to run at their rated speed. If the Hall speed sensor fails, the control component outputs a fixed drive current according to the calculated value of the speed closed-loop regulation model.

[0035] Preferably, the system further includes a tiered alarm component and a wireless communication module, both of which are electrically connected to the control component. The tiered alarm component includes a primary alarm unit (audible and visual warning light) and a secondary alarm unit (buzzer). < ≤ When, the control component controls the primary alarm unit to start; when > When a sensor or cooling motor 8 fails, the control component simultaneously activates the first and second level alarm units and uploads data such as fault type, real-time temperature, motor speed, and power attenuation coefficient to the railway signal maintenance terminal via the wireless communication module.

[0036] The beneficial effects of the above technical solution are as follows: when the cooling motor is running at its rated speed but still cannot reduce the temperature inside the box to a safe threshold, the control component actively reduces the working power of the indicator light through the power adjustment module, thereby reducing heat generation from the heat source end. This forms a dual temperature control logic of "active heat dissipation + heat source suppression," which can quickly curb the trend of continuous temperature rise inside the box and prevent irreversible damage to the indicator light and control component due to prolonged high-temperature operation. At the same time, the rated power is automatically restored after the temperature drops to the safe range, ensuring that the normal indication function of the indicator light is not affected, thus balancing temperature control safety and equipment functionality. The fault diagnosis module can monitor the signal status of the temperature sensor and the Hall speed sensor in real time. By setting clear fault judgment criteria, it can automatically identify sensor faults. Differentiated response strategies are adopted for different fault types. When a single temperature sensor fails, the data source is automatically switched. When both sensors fail, the cooling motor is forced to run at full load. When the Hall speed sensor fails, a fixed drive current is output. This effectively avoids the problem of temperature control system paralysis caused by sensor failure and greatly improves the system's operational stability and fault tolerance under complex outdoor conditions. The graded alarm component can trigger different levels of alarm signals based on the degree of temperature anomaly and the type of fault. The first-level alarm is for over-temperature warning, and the second-level alarm is for serious faults, which makes it easy for on-site personnel to quickly judge the urgency of the fault. The wireless communication module can upload key data such as fault type, real-time temperature, and motor speed to the operation and maintenance terminal to realize remote monitoring of equipment operation status. Operation and maintenance personnel can grasp the details of equipment faults without on-site inspection, which significantly shortens the fault response time and reduces the manpower and time costs of on-site operation and maintenance.

[0037] Example 6: Based on Example 5 above, the control component incorporates a low-power control module. This low-power control module is used to control the system to enter a sleep state when the enclosure is not in operation; when the indicator lights are off and the real-time temperature of the enclosure is... ≤ When the temperature sensor enters intermittent acquisition mode, the control component controls the temperature sensor to acquire data at 5-minute intervals for 10-second intervals, while simultaneously cutting off the power supply to the cooling motor 8; when the intermittently acquired temperature value exceeds... At this time, the control component wakes up the system, restoring the real-time acquisition of the temperature sensor and the standby state of the heat dissipation motor 8.

[0038] The beneficial effects of the above technical solution are as follows: For non-working scenarios where the signal lights are off and the cabinet temperature is within a safe range, the low-power control module has designed a hibernation operation strategy: the temperature sensor is switched to intermittent acquisition mode, and the power supply circuit of the cooling motor is cut off. Compared with the continuous monitoring and idle standby mode of the traditional system during non-working periods, meaningless power consumption is completely avoided, and the overall power consumption of the equipment is significantly reduced. It is especially suitable for unattended outdoor railway applications, reducing the long-term power cost expenditure. The intermittent acquisition mode of the temperature sensor reduces electrical losses caused by continuous power supply. The cooling motor is completely powered off during non-working periods, avoiding mechanical wear and electrical aging caused by no-load operation, effectively extending the service life of core components such as the temperature sensor and cooling motor. At the same time, it avoids the noise and component fatigue problems caused by the motor running under no-load during non-working periods, further reducing the probability of equipment failure and the cost of subsequent maintenance and replacement.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A one-piece die-cast heat sink housing for LED railway signal lights, characterized in that, The integrated die-casting box (1) is equipped with a control component and a temperature sensor. A connecting block (5) is installed on one side of the integrated die-casting box (1). An mounting block (6) is provided on the connecting block (5). The mounting block (6) is used to install a signal light. A heat dissipation mechanism (4) is provided on the upper side of the integrated die-casting box (1). The heat dissipation mechanism (4), the signal light, the control component and the temperature sensor are electrically connected.

2. The integrated die-cast LED railway signal light heat sink housing according to claim 1, characterized in that, A fixing part (3) is provided on the other side of the integrated die casting box (1); an opening and closing door (2) is provided on the front side of the integrated die casting box (1), a sealing ring (13) is provided on the opening and closing door (2), and an L-shaped connecting pipe (14) is connected to the rear side of the integrated die casting box (1), and a filter screen (7) is provided inside the L-shaped connecting pipe (14).

3. The integrated die-cast LED railway signal light heat sink housing according to claim 2, characterized in that, The heat dissipation mechanism (4) includes a heat dissipation frame (9). Several heat dissipation motors (8) are provided on the upper inner wall of the heat dissipation frame (9). Fan blades (12) are fixedly connected to the output end of the heat dissipation motors (8). Several through holes (11) and mounting slots are provided on the upper side wall of the integrated die-casting box (1). A filter screen (10) is installed in the mounting slot. The heat dissipation frame (9) is installed on the upper side of the filter screen (10).

4. The integrated die-cast LED railway signal light heat sink housing according to claim 1, characterized in that, The temperature sensor is an NTC thermistor sensor. There are two temperature sensors, which are respectively located on the surface of the main control board of the control component in the integrated die-casting box (1) and the heating end of the signal light drive module. The control component is preset with three temperature threshold levels, including a first temperature threshold. Second temperature threshold and the third temperature threshold ,and < < ; The control component receives data collected by each temperature sensor, removes outliers exceeding the measurement range, and calculates the average temperature as the real-time temperature value. ; when ≤ At that time, the control component controls all cooling motors (8) to shut down and stop running; when < ≤ At that time, the control component controls half of the cooling motors (8) to operate at a first preset speed. run; when < ≤ At that time, the control component controls all cooling motors (8) to operate at the second preset speed. run, > ; when > At that time, the control component controls all cooling motors (8) to operate at their rated speeds. run.

5. The integrated die-cast LED railway signal light heat sink housing according to claim 4, characterized in that, The control component incorporates a closed-loop speed regulation model, and the calculation formula for the model is as follows: ； in, The actual output speed of the cooling motor (8); The preset rotation speed for the corresponding temperature range; This is the real-time temperature value; This represents the critical threshold for the corresponding temperature range; The external ambient temperature of the enclosure; Standard ambient temperature; The formula for calculating the speed regulation coefficient K is as follows: ； In the formula, The reference speed adjustment coefficient; , This represents the actual operating power of the traffic light. This is the rated reference power for the traffic lights; The power adjustment step size is set to 5W. This represents the coefficient increment corresponding to a single step size, with a value of 5r / (min·℃). The ambient temperature compensation coefficient The calculation formula is: ； In the formula, The baseline ambient temperature compensation coefficient is set at 15 r / (min·℃). This is the environmental impact correction factor, with a value range of 0.5-0.7; ;when When <0, Values ;when At temperatures below -10℃, Values *0.

8.

6. The integrated die-cast heat sink housing for LED railway signal lights according to claim 5, characterized in that, Each output terminal of the cooling motor (8) is equipped with a Hall speed sensor, which is electrically connected to the control component to provide real-time feedback on the actual speed of the cooling motor (8). When the absolute value of the deviation between the feedback speed and the set speed If the speed exceeds the set speed by 5% and the duration exceeds 3 seconds, the control component determines that the speed is abnormal and performs speed compensation adjustment. The compensated speed is... At the same time, speed correction is achieved by increasing the drive current of the cooling motor.

7. The integrated die-cast LED railway signal light heat sink housing according to claim 4, characterized in that, A power adjustment module is provided between the control component and the signal light. This module adjusts the operating power of the signal light based on the real-time temperature of the enclosure. > Furthermore, the real-time temperature of the cooling motor (8) did not drop to the rated speed even after running for more than 10 minutes. In the following situations, the control component reduces the operating power of the signal light by 30%-50% through the power adjustment module. ,in The power attenuation coefficient, The value of the value exceeds the real-time temperature. The difference is positively correlated; for every 5°C increase in the difference, the value of λ increases by 10%. When the chamber temperature drops to... In the following situations, the control component will restore the indicator lights to their rated power operation.

8. The integrated die-cast heat sink housing for LED railway signal lights according to claim 6, characterized in that, The control component has a built-in sensor fault diagnosis module, which is used to monitor the output signals of the temperature sensor and the Hall speed sensor. When the output signal of the temperature sensor exceeds the range, the output signal of the Hall speed sensor exceeds the range, or there is no signal output for 5 seconds, the corresponding sensor is determined to be faulty. If a single temperature sensor is faulty, the control component automatically switches to the data collected by the other temperature sensor for control. If both temperature sensors are faulty, the control component controls all cooling motors (8) to run at the rated speed. If the Hall speed sensor is faulty, the control component outputs a fixed drive current according to the calculated value of the speed closed-loop regulation model.

9. The integrated die-cast heat sink housing for LED railway signal lights according to claim 8, characterized in that, It also includes a graded alarm component and a wireless communication module, both of which are electrically connected to the control component; the graded alarm component includes a primary alarm unit and a secondary alarm unit; when < ≤ When, the control component controls the primary alarm unit to start; when > When the sensor or the heat dissipation motor (8) fails, the control component will simultaneously start the first and second level alarm units, and upload data such as fault type, real-time temperature, motor speed, and power attenuation coefficient to the railway signal operation and maintenance terminal through the wireless communication module.

10. The integrated die-cast LED railway signal light heat sink housing according to claim 4, characterized in that, The control component incorporates a low-power control module, which is used to put the control system into a sleep state when the enclosure is not in operation; and to put the system into a sleep state when the indicator lights are off and the real-time temperature of the enclosure is within range. ≤ When the temperature sensor enters intermittent acquisition mode, the control component controls the temperature sensor to acquire data at 5 min intervals and for 10 s intervals, while simultaneously cutting off the power supply to the cooling motor (8); when the intermittently acquired temperature value exceeds... When the system is activated, the control component wakes up the system and restores the real-time acquisition of the temperature sensor and the standby state of the heat dissipation motor (8).

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