Lighting device with color temperature adjustment

Abstract

The utility model relates to a device that can change the color temperature of a lighting lamp, in detail, it is a landing searchlight color temperature adjustable device, is equipped with three primary color liquid color mixing subassembly, controller, water pump, electromagnetic valve, wherein three primary color liquid color mixing subassembly is equipped with three primary color liquid pipeline and high light transmission fixed plate, three primary color liquid pipeline includes 3N root main pipeline for respectively filling in red / green / blue liquid, N is positive integer, be equipped with M root capillary pipeline in the main pipeline, M is positive integer and M greater than or equal to 3, three primary color liquid pipeline adopts transparent flexible tube, three primary color liquid pipeline is coiled in high light transmission fixed plate, the control signal end of controller is connected with water pump, electromagnetic valve respectively, water pump and electromagnetic valve are connected with the inlet / outlet of three primary color liquid pipeline, compared with prior art, product practicality is improved, and product cost performance is high, and economic use nature is strong, has very strong market popularization and application value.

Description

Technical Field

[0001] This utility model relates to the field of lighting manufacturing technology, specifically a color temperature adjustment device for lighting fixtures that can adjust the color temperature of lighting fixtures in a timely manner within an ultra-wide color temperature adjustment range of 1800-9000K, thereby enabling clear light paths to penetrate fog in different environments and meeting the usage requirements of complex weather conditions in different airports. Background Technology

[0002] Most aircraft accidents occur during takeoff and landing. Therefore, airports are equipped with sophisticated navigational lighting systems to guide aircraft takeoffs and landings. The operational status and reliability of these systems are directly related to flight safety. Even so, civilian airliners generally avoid takeoffs and landings in complex weather conditions. In contrast, military aircraft need to achieve normal takeoffs and landings in various application scenarios, including nighttime, complex weather, or low-visibility environments (such as dense fog, haze, etc.). Military airports, especially those located on islands and in mountainous areas, frequently encounter sudden dense fog and other extreme weather conditions. Furthermore, military aircraft takeoffs and landings are also unpredictable and frequent. Existing high-power landing lighting systems mostly use xenon light sources, which have poor fog penetration and cannot quickly adapt to these emergency situations. Therefore, there is an urgent need to develop a device that can adjust the wavelength of the guide light in a timely manner to maximize transmittance, taking into account the variable weather conditions around airports, in order to safely, accurately, and quickly guide aircraft to land in nighttime, complex weather, or low-visibility environments.

[0003] There are hundreds of military airports in China, with varying natural environments. Developing a device that can change the wavelength of the guide light in a timely manner to improve transmittance can significantly enhance the safety and timeliness of military aircraft landings, improve the technological level and industrial competitiveness of my country's aviation equipment, and has significant economic value and application prospects.

[0004] Currently, most high-power landing searchlight systems used in military airports have a light source color temperature of 5000-6500K. According to Rayleigh scattering law, the degree of light scattering is inversely proportional to the fourth power of the wavelength. Light with a color temperature of 5000-6500K is cool-toned, with a relatively high proportion of short-wavelength components such as blue light. In foggy or hazy weather conditions, these short-wavelength rays are more easily scattered by tiny suspended particles in the air (such as PM2.5), causing the light to scatter in all directions and making it difficult to penetrate fog to form a clear light path, resulting in poor fog penetration. This cannot fully meet the requirements for use in complex weather conditions at different airports. Summary of the Invention

[0005] This invention addresses the shortcomings and deficiencies of existing technologies by proposing a color temperature adjustment device for lighting fixtures that can promptly change the wavelength of the guiding light to maximize transmittance, taking into account the variable weather conditions around airports.

[0006] This utility model achieves its purpose through the following measures:

[0007] A lighting activation color temperature adjustment device is characterized by comprising a three-primary-color liquid color-adjusting assembly, a controller, a water pump, and a solenoid valve. The three-primary-color liquid color-adjusting assembly includes three-primary-color liquid pipelines and a high-transmittance fixing plate. The three-primary-color liquid pipelines include 3N main pipelines for respectively filling red / green / blue liquids, where N is a positive integer. Each main pipeline includes M capillary tubes, where M is a positive integer and M≥3. The three-primary-color liquid pipelines are transparent flexible tubes, coiled around the high-transmittance fixing plate. The controller is connected to the control signal terminals of the water pump and the solenoid valve, respectively. The water pump and the solenoid valve are connected to the inlet / outlet terminals of the three-primary-color liquid pipelines.

[0008] The red / green / blue liquid described in this invention is a low-temperature resistant liquid, such as liquid ammonia with added red / green / blue dyes, which can maintain good flow at temperatures ranging from -41℃ to 120℃.

[0009] The three-primary-color liquid pipeline of this invention is filled with red, green and blue liquids respectively, and then repeatedly coiled in an S-shape to form a rectangle, ellipse or circle.

[0010] In this utility model, the capillary tubes in the main pipeline of the three primary color liquid pipeline are all coaxial with the main pipeline and arranged parallel to each other. Preferably, the three primary color liquid pipeline has 5 capillary tubes. The inlet and outlet ends of the three primary color liquid pipeline are respectively provided with connecting joints, and are connected to the connecting pipelines of the water pump and solenoid valve through the connecting joints.

[0011] This invention features three tri-color liquid conduits, each made of highly transparent silicone tubing. Each silicone tubing has a diameter of 1.0±0.5mm and contains five capillary silicone tubing segments of 0.3±0.05mm. These five capillary segments are symmetrically arranged along the central axis of the main conduit. The three tri-color liquid conduits are first tightly bonded together side-by-side, then repeatedly folded in an S-shape, so that the inlet ends (three holes) of the three conduits are on the same side, and the outlets are on the other side. A solenoid valve and a micro-pump control the flow of red, blue, and green liquids into the five capillary segments of each conduit. Each capillary segment is filled with 20% of the total liquid volume, totaling 100% for all five. The color temperature is changed based on the percentage of liquid filled into each of the five capillary segments.

[0012] The solenoid valve described in this utility model is a two-position five-way solenoid valve, the water pump is a micro water pump, and the controller is a PLC controller. Three two-position five-way solenoid valves are respectively connected to the three primary color liquid pipelines. By controlling the number of solenoid valve passages, the switching of different liquid flow rates, that is, the switching of color temperature, can be achieved.

[0013] The three-primary-color liquid color matching assembly of this utility model is further provided with a fixed cover plate located behind the three-primary-color liquid pipeline. The coiled three-primary-color liquid pipeline is fixed between the fixed cover plate and the high-transmittance fixed plate by fastening screws.

[0014] This utility model also includes a display component connected to the controller and a wireless communication circuit. The PLC controller and the display component can communicate directly or through the wireless communication circuit. The wireless communication circuit can connect the display component and the PLC controller together through a wireless bridge for real-time communication.

[0015] This utility model applies to a landing searchlight with adjustable color temperature. It features a xenon-type high-power searchlight and is characterized by a color temperature adjustment device for the illuminator, as described above. This device is located outside the diffuser of the xenon-type high-power searchlight. The color temperature of the landing searchlight is adjusted by controlling a solenoid valve and a water pump to regulate the amount of red, green, and blue liquids pumped into the tri-color liquid pipeline. Specifically, the tri-color liquid color-adjusting component of the color temperature adjustment device is placed at the head of the high-power searchlight. Before operation, the light fixture adjusts the illumination range using a focusing device and a diffuser. The light emitted through the diffuser is high color temperature white light. The tri-color liquid color-adjusting component is placed in front of the diffuser, and the amount of red, green, and blue liquids pumped in is selected according to requirements to achieve different color temperatures.

[0016] This invention offers the following advantages: The tri-color temperature is infinitely modulated, allowing for the creation of any desired color temperature. Several color temperatures can also be specified based on the climate characteristics of the customer's location. By adjusting the proportion of the injected tri-color liquid, a large-scale adjustable color temperature transparent disc can be manufactured. The structure is simple and easy to control, making it widely applicable to large xenon and laser searchlights requiring variable color temperatures. It can meet the requirements of various airports under complex weather conditions. The adjustment of the injected tri-color liquid proportion can be done manually or wirelessly, offering convenient operation. Compared to existing color temperature modulation devices for searchlights on the domestic and international markets, this product boasts improved durability and practicality. Furthermore, it offers high cost-effectiveness and economic viability, making it highly valuable for market promotion and application. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the structure of the three-primary-color liquid color mixing component in this utility model.

[0018] Appendix Figure 2 This is a schematic diagram of a coiling method for a three-primary-color liquid pipeline in this utility model.

[0019] Appendix Figure 3 This is a cross-sectional structural diagram of a three-primary-color liquid pipeline in this utility model.

[0020] Appendix Figure 4 This is a schematic diagram of the principle of the color temperature adjustment device for the lighting fixture in this utility model.

[0021] Appendix Figure 5 This is a schematic diagram of a wireless communication module in this utility model.

[0022] Attached reference numerals: 1. Three-color liquid pipeline; 2. High-transmittance fixing plate; 3. Fixing cover plate; 4. Fastening screw; 5. Controller; 6. Water pump; 7. Solenoid valve. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0024] As attached Figure 1 , 2 As shown in Figures 3 and 4, this example provides a color temperature adjustment device for lighting fixtures, which includes a three-primary-color liquid color adjustment assembly, a controller 5, a water pump 6, and a solenoid valve 7. The three-primary-color liquid color adjustment assembly includes a three-primary-color liquid pipeline 1 and a high-transmittance fixing plate 2. The three-primary-color liquid pipeline includes three main pipelines for filling red / green / blue liquids respectively. The main pipelines include five capillary pipelines. The three-primary-color liquid pipeline 1 is a transparent flexible tube. The three-primary-color liquid pipeline 1 is coiled around the high-transmittance fixing plate 2. The controller 5 is connected to the control signal terminals of the water pump 6 and the solenoid valve 7 respectively. The water pump 6 and the solenoid valve 7 are connected to the inlet / outlet terminals of the three-primary-color liquid pipeline.

[0025] The red / green / blue liquid described in this example is a low-temperature resistant liquid (such as liquid ammonia with added red / green / blue dyes), which can maintain good flow at temperatures ranging from -41℃ to 120℃.

[0026] In this example, the three-primary-color liquid pipeline 1 is filled with red, green, and blue liquids respectively, and then repeatedly coiled in an S-shape to form a rectangle, as shown in the attached diagram. Figure 3 As shown, in this example, the capillary tubes in the main pipeline of the three primary color liquid pipeline 1 are all coaxially arranged with the main pipeline. The three primary color liquid pipeline 1 is provided with 5 capillary tubes. The inlet / outlet ends of the three primary color liquid pipeline 1 are respectively provided with connecting joints. The connecting joints are conventional devices and are existing technology. They are connected to the connecting pipelines of the water pump and solenoid valve through the connecting joints.

[0027] In this example, the tri-color liquid pipeline 1 uses a highly transparent silicone tube, with each silicone tube having a diameter of 1.0±0.5mm. Inside, there are five capillary silicone tubes with a diameter of 0.3±0.05mm. These five capillary tubes are symmetrically arranged along the central axis of the main pipeline. The three tri-color liquid pipelines 1 are first tightly bonded together side-by-side, and then repeatedly folded in an S-shape so that the inlet ends (three holes) of the three tri-color liquid pipelines 1 are on the same side, and the outlets are on the other side. The red liquid is controlled by a solenoid valve 7 and a micro water pump 6. The three primary color liquids, namely, chromatic liquid, blue liquid, and green liquid, flow into the five capillaries of each pipeline. Each capillary is filled with liquid, accounting for 20% of the total liquid volume, and the five capillaries are filled to 100%. The color temperature is changed according to the percentage of liquid in the five capillaries filled with the three primary color liquids. The three primary color liquid color adjustment assembly is also equipped with a fixed cover plate 3 located behind the three primary color liquid pipeline 1. The coiled three primary color liquid pipeline 1 is fixed between the fixed cover plate 3 and the high light transmittance fixed plate 2 by fastening screws 4.

[0028] The solenoid valve 7 is a two-position five-way solenoid valve, the water pump is a micro water pump, and the controller is a PLC controller. Three two-position five-way solenoid valves are respectively connected to the three primary color liquid pipelines. The switching of different liquid flow rates, i.e., the switching of color temperature, is achieved by controlling the number of solenoid valve passages.

[0029] This example also includes a display component connected to the controller and a wireless communication circuit. The PLC controller and the display component can communicate directly or through the wireless communication circuit. The wireless communication circuit can connect the display component and the PLC controller together wirelessly for real-time communication. Example

[0030] This example proposes a landing searchlight with adjustable color temperature, which is equipped with the color temperature adjustment device for lighting described in Embodiment 1. The tri-color liquid pipeline 1 is made of highly transparent silicone tube and is provided with valve ports (connectors) at both ends. During operation, by receiving control commands issued by the PLC control module, the micro water pump and the solenoid valve work together to adjust the amount of liquid pumped into the pipeline, so that the tri-color liquid flows in the silicone tube and forms the filling percentage of different colors in the tri-color liquid color adjustment component.

[0031] In this example, the micro water pump is supplied with pressurized liquid to the three-color liquid pipeline module by the PLC controller through a relay to provide on / off signals; the solenoid valve is used to control the flow rate and volume of the liquid supplied by the micro water pump by providing on / off signals under the action of the PLC controller through a relay.

[0032] In this example, the PLC controller consists of a PLC main board, input points, output points, and a housing. The PLC main board stores the control program, the input points receive commands, the output points send commands, and the housing protects the above structure from external damage. The PLC control module provides on / off signals to the micro-control water pump module and solenoid valve module via relays. A Siemens S7-SMART series PLC is recommended, with the standard transistor output ST40 model being suitable. It requires DC 24V power supply, has 24 inputs and 16 outputs, and signal boards and input / output modules can be added.

[0033] This example also includes a display component, which can be a Siemens SIMATIC HMI SMART 700 IE V4 series touch screen, consisting of a touch screen and a housing. The touch screen is used to store control programs and can display the programs intuitively on the touch screen. Commands can be issued by touching the screen with a finger, making it convenient, fast and practical.

[0034] This example also includes a wireless communication module connected to the PLC controller, operating at a frequency of 470MHz. This wireless communication module consists of an integrated wireless module, an MCU control module, a two-way communication conversion module, and a power supply module. The power supply module provides power to the integrated wireless module, MCU control module, and two-way communication conversion module. The two-way communication conversion module communicates with the integrated wireless module through the MCU control module. During operation, the module transmits signals as follows: the MCU control module encodes and packages the data to be transmitted from the two-way communication conversion module according to a specific communication protocol, and transmits the packaged data to the integrated wireless module. The integrated wireless module converts the digital signal into a radio frequency (RF) signal and transmits it through an antenna. It also receives signals: the antenna receives the RF signal from the outside, the RF front-end circuit filters and amplifies the received signal, the integrated wireless module converts the RF signal into a digital signal, and demodulates and decodes it. The MCU control module processes and analyzes the decoded data, extracting useful information according to the communication protocol. The wireless communication module is mainly used by the wireless relay unit to connect the display module and the PLC control module via wireless bridging for real-time communication.

[0035] Specifically, the miniature water pump in this example consists of a miniature DC motor, a pump body, a pump cover, an impeller, a direct-drive shaft, a drive shaft seal, and connecting bolts. The miniature DC motor provides the power source for the water pump. The impeller rotates rapidly under the drive of the direct-drive shaft. Through the water priming action, a vacuum negative pressure is generated in the inner cavity of the water pump, drawing water into the water pump and giving the liquid it sprays a certain pressure and flow rate. The PLC controls the supply of liquid and liquid pressure to subsequent modules. In this example, due to the thin silicone tube and high water pressure requirements, a small diaphragm pump is selected as the micro pump. The small diaphragm pump mainly consists of a motor, diaphragm, inlet and outlet valves, and pump body. The motor drives a component connected to the diaphragm. When the motor is working, it pushes the diaphragm to reciprocate. When the diaphragm moves backward, the pump chamber volume increases, the pressure decreases, the inlet valve opens, and water enters the pump chamber under the action of external atmospheric pressure. When the diaphragm moves forward, the pump chamber volume decreases, the pressure increases, the inlet valve closes, the outlet valve opens, and water is squeezed out of the pump chamber. This cycle is repeated to achieve water pumping and water injection.

[0036] The solenoid valve module mainly consists of an electromagnetic coil, an iron core assembly, a valve nozzle assembly, a spring, and a valve body. The electromagnetic coil generates a magnetic field when energized. When current flows through the coil, it produces magnetic lines of force. This magnetic field can attract or repel other magnetic materials, thus achieving the opening and closing action of the solenoid valve. It receives commands from the PLC control module to output liquid with specific pressure and flow rate to subsequent modules.

[0037] In this example, the tri-color liquid pipeline is equipped with silicone tubes and circular valve ports. Each silicone tube has a diameter of approximately 1.0 mm and is made up of five capillary silicone tubes of 0.3 mm diameter wound together according to a certain size. After winding, it forms two ends, which are connected to special valve ports respectively, so that the liquid can enter and flow out of the five capillary tubes in the main tube.

[0038] like Figure 2 , 3 As shown in the diagram, this is a cross-sectional view of the tri-color liquid pipeline, which is made of tightly wound high-transparency silicone tubing. Each silicone tubing has a diameter of approximately 1.0 mm and consists of five 0.3 mm capillary silicone tubings inside. As shown in the enlarged schematic diagram at position 1, each silicone tubing contains five capillary tubes. Three silicone tubings of a certain length (according to requirements) and a diameter of 1 mm are taken and tightly glued together side by side. They are then folded in half to the required size. Finally, the tri-color liquid pipeline has three large silicone tube holes on each side, for a total of six holes. Three inlets can be made at one end and three outlets at the other. The red, blue, and green liquids are controlled by a solenoid valve and a micro water pump to flow into the five capillary tubes of the three tri-color liquid pipelines, respectively. Each capillary tube is filled with liquid to 20% of the total liquid volume, totaling 100% for all five. The color temperature is changed based on the percentage of liquid filled into the five tubes by the tri-color liquid.

[0039] The three-primary-color liquid pipeline has three inlets at one end into which red, green, and blue liquids flow in respectively, and then flow out from three outlets respectively. Since each silicone tube contains five capillary silicone tubes, the amount of liquid is controlled by the five tubes, and the color temperature is controlled according to the percentage of liquid filled into the tube.

[0040] The adjustable color temperature landing searchlight consists of tri-phosphor liquid tubing, a high-transmittance mounting plate, a mounting cover, and screws. The tri-phosphor liquid tubing is made of three 1mm high-transmittance silicone tubes wound together and fixed to the light-transmitting mounting plate (the mounting plate can be made of high-transmittance glass, high-transmittance PC, high-transmittance acrylic, etc.). The mounting cover is made of aluminum alloy, with the center shaped to the customer's required light outlet diameter. The mounting cover is secured to the light-transmitting mounting plate with stainless steel screws, forming a complete unit.

Claims

1. A color temperature adjustment device for a lighting fixture, characterized in that, The device includes a three-primary-color liquid color-matching assembly, a controller, a water pump, and a solenoid valve. The three-primary-color liquid color-matching assembly includes three-primary-color liquid pipelines and a high-transmittance fixing plate. The three-primary-color liquid pipelines include 3N main pipelines for filling red / green / blue liquids respectively, where N is a positive integer. The main pipelines include M capillary pipelines, where M is a positive integer and M≥3. The three-primary-color liquid pipelines are transparent flexible tubes and are coiled around the high-transmittance fixing plate. The controller is connected to the control signal terminals of the water pump and the solenoid valve respectively. The water pump and the solenoid valve are connected to the inlet / outlet terminals of the three-primary-color liquid pipelines.

2. The color temperature adjustment device for lighting fixtures according to claim 1, characterized in that, The red / green / blue liquids are low-temperature resistant liquids that maintain good flow at temperatures ranging from -41℃ to 120℃.

3. The color temperature adjustment device for lighting fixtures according to claim 1, characterized in that, After the three primary color liquid pipelines are filled with red, green, and blue liquids respectively, they are repeatedly coiled in an S-shape to form a rectangle, ellipse, or circle.

4. The color temperature adjustment device for lighting fixtures according to claim 1, characterized in that, The capillary tubes within the main pipeline of the three primary color liquid pipeline are all coaxially arranged in parallel with the main pipeline. The inlet and outlet ends of the three primary color liquid pipeline are respectively provided with connecting joints, which are connected to the connecting pipelines of the water pump and the solenoid valve.

5. The color temperature adjustment device for lighting fixtures according to claim 4, characterized in that, It is equipped with three tri-color liquid pipelines, using highly transparent silicone tubes. Each silicone tube has a diameter of 1.0±0.5mm and contains five capillary silicone tubes of 0.3±0.05mm inside. The five capillary tubes are symmetrically arranged along the central axis of the main pipeline. The three tri-color liquid pipelines are first tightly bonded together side by side, and then repeatedly folded in an S-shape so that the three inlet holes of the three tri-color liquid pipelines are on the same side, and the outlet is on the other side. The red liquid, blue liquid, and green liquid are controlled by a solenoid valve and a micro water pump to flow into the five capillary tubes of each pipeline respectively. Each capillary tube is filled with liquid to 20% of the total liquid, and the five capillary tubes are filled to 100%. The color temperature is changed according to the percentage of liquid in the five tubes filled with tri-color liquid.

6. The color temperature adjustment device for lighting fixtures according to claim 1, characterized in that, The solenoid valve is a two-position five-way solenoid valve, the water pump is a micro water pump, and the controller is a PLC controller. Three two-position five-way solenoid valves are respectively connected to the three primary color liquid pipelines. The switching of different liquid flow rates, i.e., the switching of color temperature, is achieved by controlling the number of solenoid valve passages.

7. The color temperature adjustment device for lighting fixtures according to claim 1, characterized in that, The three-primary-color liquid color matching assembly also includes a fixed cover plate located behind the three-primary-color liquid pipeline. The coiled three-primary-color liquid pipeline is fixed between the fixed cover plate and the high-transmittance fixed plate by fastening screws.

8. The color temperature adjustment device for lighting fixtures according to claim 1, characterized in that, It also includes a display component and a wireless communication circuit connected to the controller. The PLC controller communicates directly with the display component or through the wireless communication circuit. The wireless communication circuit connects the display component and the PLC controller together wirelessly for real-time communication.

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