A LED directional lighting system for uniform lighting of a facade of a long and narrow passage

Abstract

This invention discloses a stacked LED directional lighting system specifically designed for laying hen houses, featuring facade lighting that differs from the horizontal lighting focus of ordinary lighting systems. The system comprises double-U directional lights, a directional rotation adjustment mechanism, and spaced T-shaped conductors. The lights incorporate a symmetrical double-U-shaped reflective light control structure and a double-LED plate. Utilizing a customized light distribution curve, it avoids the near-brightness and far-darkness defect, achieving reasonable light intensity supplementation between near and far cages, forming a light distribution distribution with raised sides and a recessed center. The directional rotation mechanism can adjust and lock the light fixture angle, ensuring uniform light output from the multi-lamp array. Combined with high and low-position suspension, it achieves uniform lighting on both sides of narrow passageways without adding lights, increasing costs, or increasing energy consumption. The system is adjustable in size, offers optional lampshades, is fully sealed for dust and moisture protection, and its lighting parameters meet livestock and poultry farming environmental standards. It can reduce stress on laying hens, improve egg production performance, is energy-efficient, easy to operate and maintain, and has significant industrialization and patent application value.

Description

Technical Field

[0001] This invention relates to the field of LED lighting technology, specifically different from ordinary lighting (which uses horizontal working surfaces such as the ground as the lighting object and focuses on the uniformity of illuminance on the horizontal working surface). This invention is a dedicated system designed specifically for facade lighting and can be applied to scenarios such as stacked livestock and poultry sheds, narrow passages, and factory corridors. It can achieve uniform lighting on both sides of the facade of the passage, and is especially suitable for stacked layer chicken sheds. It solves the technical pain points of traditional lighting systems such as uneven facade illuminance, excessive brightness in cages close to the light, and excessive darkness in cages far from the light, as well as stress on livestock and poultry, thereby improving breeding efficiency. Background Technology

[0002] In enclosed, multi-tiered poultry houses, especially egg-laying hen houses, a layout of "narrow passageways + multiple cages on both sides" is commonly used. This type of setting has specific requirements for lighting: First, it is necessary to provide uniform and soft lighting to the cages on both sides to ensure that livestock and poultry can eat and rest normally. This is fundamentally different from the need for ordinary lighting, which focuses on the horizontal working surface. Second, it is necessary to avoid the drawbacks of the near-brightness and far-darkness characteristics of light. It is necessary to avoid excessive light in cages close to the light source to prevent stress, pecking, and decreased egg production in livestock and poultry, while avoiding insufficient light in cages far from the light source to prevent insufficient feed intake and uneven development in livestock and poultry. Third, it is necessary to ensure that the difference in illuminance between the upper and lower layers of cages is controlled within a reasonable range to avoid differences in growth and development caused by uneven lighting. Fourth, it is necessary to adapt to the harsh environment of the poultry house, which is humid, dusty, and easily corroded, to ensure that the lighting fixtures work stably for a long time.

[0003] According to an excerpt from Evidence Document 1, "Environmental Quality Standard for Livestock and Poultry Farming" (NY / T 388-2020), the facade lighting of livestock and poultry houses should ensure uniform illuminance, the illuminance ratio between upper and lower floors should not be too large, and the glare value should be controlled within a reasonable range to ensure the normal production performance and welfare level of livestock and poultry. This standard is the core compliance basis for livestock and poultry lighting.

[0004] Evidence document 2, "The Influence of Light Intensity on Peak Egg Production Performance and Blood Biochemical Indicators of Jinghong No. 1 Laying Hens" (full text); evidence document 3, "The Influence of Different Light Intensities of LED Light on the Production Performance and Welfare of Laying Hens in Stacked Cages" (excerpt); and evidence document 4, "A Study on the Influence of Different Light Intensities on the Production Performance of Laying Hens" (full text)—all three academic studies clearly demonstrate that: excessive light can lead to stress, agitation, decreased egg production rate, and abnormal blood biochemical indicators in laying hens; insufficient light can lead to insufficient feed intake, uneven development, and reduced uniformity of egg production in laying hens; and poor uniformity of illumination can significantly exacerbate the above problems, directly affecting the economic benefits of breeding.

[0005] Currently, lighting systems used in narrow passageways and poultry houses generally employ traditional 180° omnidirectional luminaires. These luminaires have several insurmountable technical defects: First, the light is omnidirectionally scattered and affected by the near-bright-far-dark characteristic of light, resulting in excessively strong illumination in cages closer to the light source and insufficient illumination in cages farther away, leading to extremely uneven illuminance on the facade. This contrasts sharply with the uniform facade lighting design of this invention (ordinary lighting only pursues uniformity on the horizontal working surface and cannot meet the needs of facade lighting); Second, the illuminance difference between upper and lower cages can reach 5 to 8 times, far exceeding the safety threshold specified in the NY / T 388-2020 standard; Third, the glare value is high (measured to be above 25), easily causing stress and pecking problems in laying hens; Fourth, there is no dedicated directional light distribution structure, making it impossible to accurately illuminate the cages on both sides of the facade, resulting in serious light waste. Furthermore, to compensate for the insufficient illumination in cages farther away from the light source, a large number of luminaires need to be added, significantly increasing costs and energy consumption.

[0006] The comparative data from Evidence Document 5, "Analysis and Comparison Results of the Lighting Fixture of this Application and Traditional 180° Lighting Fixtures.pdf", Evidence Document 1, "Patent Product - IES Globe Photometer Test Report.pdf", and Evidence Document 3, "Traditional 180° Product - IES Globe Photometer Test Report.pdf", show that the illuminance uniformity of the traditional 180° lighting fixture is only 0.15, the illuminance ratio between upper and lower layers is as high as 7:1, and the glare value is 25, which cannot meet the lighting needs of modern stacked egg-laying hen houses. In contrast, the illuminance uniformity of the lighting fixture (17) of this application is ≥0.6, the illuminance ratio between upper and lower layers is ≤2.8:1, and the glare value is ≤18, all of which are better than the industry standard. At the same time, Evidence Document 2, "Patent Product - IES Globe Photometer Testing Agency CNAS Certificate.pdf", confirms that the IES test data of the lighting fixture (17) of this application was issued by a professional institution with CNAS qualifications. The data is true, valid, and traceable, providing authoritative support for the technical effect.

[0007] Currently, there is no dedicated LED directional lighting system on the market that can specifically address the pain points of facade lighting in aquaculture. Existing products suffer from the drawback of near-brightness and far-darkness characteristics due to their inability to avoid light, and they also struggle to achieve directional light distribution where "the light intensity is moderate near the light source and supplemental for the cages further away." Furthermore, they lack core functions such as rotational positioning and adjustable size to adapt to multi-layered aquaculture facades. Therefore, they cannot fundamentally solve the core pain point of "too bright near the light source and too dark far away" in existing technologies, and it is even more difficult to improve the uniformity of facade lighting without increasing the number of lights (thus avoiding increased costs and energy consumption). Therefore, developing an LED directional lighting system with directional light control, uniform illuminance, low glare, rotatable positioning, adaptability to multiple scenarios, and specifically designed to solve the problem of "too bright near the light source and too dark far away" in facade lighting without increasing costs and energy consumption is both a pressing technical challenge in this field and an important requirement for promoting the upgrading of the modern aquaculture industry. Summary of the Invention Purpose of the invention

[0008] To address the shortcomings of existing technologies, this invention provides an LED directional lighting system. Unlike ordinary lighting that focuses on horizontal work surfaces, this system is specifically designed for vertical lighting. Through a unique double-U-shaped reflective light control structure and a customized light distribution curve, it solves the core pain point of "excessively bright cages near the light and excessively dark cages far from the light" caused by the near-bright-far-dark characteristic of light. At the same time, without increasing the number of lights or raising costs and energy consumption, it improves the uniformity of lighting on both sides of narrow passages and stacked livestock sheds. Furthermore, through optimized designs such as rotation positioning, adjustable size, and optional lampshades, the system's adaptability and stability are improved, making it suitable for harsh environments in livestock sheds. Combined with academic research and experimental data, it significantly improves livestock welfare and breeding efficiency. Technical solution

[0009] The specific technical solution of the LED directional lighting system of the present invention is as follows: An LED directional lighting system includes at least one double U-shaped directional lamp, a directional rotation adjustment mechanism, and spaced T-shaped conductors; The double-U directional lamp includes a lamp body (17), a reflective light control structure, two sets of lamp bead plates (12, 13), and a lamp cover (11); the reflective light control structure includes a middle plate (16), a first U-shaped reflector (14), a second U-shaped reflector (15), a first lamp bead plate (12), and a second lamp bead plate (13); the middle plate (16) also has a heat dissipation function, used to fix the lamp bead plates (12, 13) and dissipate the heat generated when the lamp beads are working, thus extending the service life of the lamp. The first LED bead plate (12) and the second LED bead plate (13) are arranged at a symmetrical angle and are fixed together on the middle plate (16). The angle can be adjusted according to the light distribution requirements to ensure that the light can be accurately projected onto the two side facades after reflection. The first U-shaped reflector (14) covers the light-emitting side of the first lamp bead plate (12), and the second U-shaped reflector (15) covers the light-emitting side of the second lamp bead plate (13), so that the light emitted by the lamp bead plates (12, 13) is confined within the U-shaped groove, preventing the light from shining directly into the center. After being reflected by the inner wall of the U-shape, the light is emitted in a directional manner to the sides and downwards, forming a directional light distribution effect. The reflective light control structure is installed inside the lamp body (17), and the lamp cover (11) is covered to form a sealed protection, preventing dust and moisture in the breeding house from entering the lamp, avoiding short circuits of the lamp beads (12, 13) and aging of the circuit, and adapting to the humid and dusty breeding environment; The dual U-shaped directional lights form a light distribution distribution of "moderate light intensity in cages near the lights and supplementary light intensity in cages far from the lights". The corresponding light distribution curve shows the characteristics of "bulging on both sides and concave in the middle". This characteristic has been confirmed by the IES spectral photometer in document 1. It can effectively avoid the drawback of the near-bright and far-dark characteristics of light, and ensure that the illumination of cages near and far from the lights is within a reasonable range. Uniform facade lighting can be achieved without increasing the number of lights, avoiding the increase in cost and energy consumption, while ensuring sufficient illumination on both sides of the facade without overly bright or insufficient areas. The directional rotation adjustment mechanism is connected to the double U-shaped directional light and is used to adjust and keep the light output direction of the light fixture uniformly facing both sides of the passageway, to ensure the light distribution consistency of the multi-light array and avoid the occurrence of blind spots or overlapping overly bright areas. The double U-shaped directional lights are suspended at equal intervals by spaced T-shaped wires (23). The spaced T-shaped wires (23) serve both as power supply and suspension fixing functions, ensuring that the lights are installed stably and with uniform spacing, thus providing a foundation for uniform lighting. The system is used in narrow passageways to achieve uniform lighting on both sides of the passageway, and is especially suitable for stacked egg-laying hen houses, solving the technical pain points of traditional lighting fixtures. Further optimize the technical solution

[0010] To further improve the system's performance, adaptability, and usability, and in accordance with the technical features defined in the claims, the present invention formulates the following targeted optimization schemes (corresponding to claims 2-7, which are all additional technical features defined in the claims, and will be described in detail one by one): (1) Optimization of reflector performance (corresponding to claim 2): The inner walls of the first U-shaped reflector (14) and the second U-shaped reflector (15) are set as high reflective surfaces with a reflectivity ≥90%, which can maximize the reflection of the light emitted by the lamp bead plate (12, 13), reduce light loss, enhance the directional light intensity on both sides, ensure the formation of a light distribution distribution of "strong on both sides and weak in the middle", effectively improve the light efficiency utilization rate, and provide a guarantee for the directional light distribution effect.

[0011] (2) Optimization of light distribution curve (corresponding to claim 3): The symmetrical angle between the first lamp bead plate (12) and the second lamp bead plate (13) is set to 60°~120°. This angle range is verified by the actual test in document 1 (IES test report). It can make the lamp form a stable light distribution curve of "double-sided convex and central concave", accurately avoid the near-bright and far-dark characteristics of light, and achieve the light distribution effect of "moderate light intensity near the cage and supplementary light intensity far from the cage". Without increasing the number of lamps, without increasing the cost and energy consumption, it can be adapted to narrow channels of different widths and breeding facades of different heights.

[0012] (3) Optimization of the rotation positioning mechanism (corresponding to claim 4): The directional rotation adjustment mechanism specifically includes a lamp plug (18), a directional rotation tube (19) and a U-shaped wire clip (20); wherein, the lamp plug (18) is made of plastic, one end is connected to the lamp body (17), and the other end is provided with a toothed protrusion (21); one end of the directional rotation tube (19) is provided with a toothed protrusion (21), which meshes with the toothed protrusion (21) of the lamp plug (18) to achieve the function of "rotatable under external force and self-locking without external force", ensuring that the direction of the lamp does not deviate after adjustment; the power supply wire (22) is inserted inside the directional rotation tube (19), and its end is inserted into the U-shaped wire clip (20) to achieve anti-rotation fixation and avoid the wire (22) from being twisted and damaged; by rotating the directional rotation tube (19), the angle of the lamp plug (18) and the lamp (17) can be adjusted to ensure that the light output direction of the multi-lamp array is consistent and to improve the uniformity of the lighting throughout the field.

[0013] (4) System layout optimization (corresponding to claim 5): The double U-shaped directional lights are suspended at intervals of 1m to 2.5m along the narrow passage, with high and low positions combined. The suspension is achieved by using T-shaped wires (23) at intervals. This spacing range is designed in combination with the width of the breeding passage and the height of the facade. Through DIALUX scene simulation and on-site measurement (based on proof document 1), it can be ensured that the uniformity of illuminance on both sides of the passage is ≥0.6, which fully meets the requirements of the "Livestock and Poultry Breeding Environmental Quality Standard" (NY / T 388-2020).

[0014] (5) Adjustable size optimization (corresponding to claim 6): The U-shaped opening width and U-shaped side groove height of the first U-shaped reflector (14) and the second U-shaped reflector (15) can be adaptively adjusted according to the height of the breeding facade and the width of the narrow breeding channel, further improving the uniformity of illumination on both sides of the narrow channel and adapting to different specifications of stacked breeding houses.

[0015] (6) Lampshade adaptation optimization (corresponding to claim 7): The lampshade (11) can be either spherical or cylindrical. The spherical lampshade is suitable for small breeding channels, and the light diffusion is softer; the cylindrical lampshade is suitable for large breeding channels, and the light projection is more concentrated. It can be flexibly selected according to different installation environments and lighting needs to improve the system's adaptability range.

[0016] (7) Scene adaptation optimization (in combination with the extended effects of all claims): This system can be adapted to the lighting scene of narrow passage facades such as stacked egg houses. By suppressing direct light in the middle and enhancing the uniformity of lighting on both sides of the facade, it can reduce the stress response of livestock and poultry and improve the uniformity of egg production. According to the academic research in evidence documents 2, 3 and 4, the application of this optimization scheme can increase the egg production rate of laying hens by ≥8%, which can significantly improve the breeding efficiency. Working principle

[0017] The LED directional lighting system of this invention works on the following principle: Two sets of LED bead plates (12, 13) within the double-U directional lamp emit light at a symmetrical angle. Unlike ordinary lighting that focuses on illuminating horizontal work surfaces, this system is specifically designed for vertical cage positions. The light is confined within the U-shaped groove by the double-U-shaped reflectors (14, 15) covering the outer side, and the near-brightness and far-darkness characteristics of the light are avoided through a customized light distribution curve. The high-reflectivity surface of the inner wall of the U-shaped reflectors (14, 15) reflects the light and projects it directionally to the sides and diagonally downwards, achieving "moderate light intensity near the lamp cage and supplementary light intensity far from the lamp cage." The synergistic effect of the two sets of reflectors (14, 15) causes the lamp to form a "… The light distribution with "protruding sides and concave center" can achieve uniform lighting of the facade without increasing the number of lamps, avoiding increased costs and energy consumption. The directional rotation adjustment mechanism adjusts and locks the light output direction of the lamps through the meshing structure of toothed protrusions (21), ensuring that all lamps (17) face the facades on both sides of the passage. The double U-shaped directional lamps are suspended at a set interval by T-shaped wires (23), so that the light forms a uniform coverage on both sides of the facades of the passage, completely solving the problem of "too bright when close to the lamp and too dark when far from the lamp". Finally, uniform lighting of the facades on both sides of the narrow passage is achieved, meeting the lighting needs of the stacked egg-laying hen house, while adapting to the humid and dusty environment and working stably for a long time. Beneficial effects

[0018] Based on the measured data and academic evidence presented in Evidence Documents 1-5 and Proof Documents 1-3, this invention has the following outstanding advantages compared to existing technologies: (1) Original light distribution design to accurately solve the core pain points of facade lighting: This invention differs from the pursuit of uniformity of horizontal working surface in ordinary lighting. It is specifically designed for facade lighting. Through the light control structure of double U-shaped reflectors (14, 15), it has for the first time achieved customized light distribution of "moderate light intensity near the light source and supplementary light intensity far from the light source". It effectively avoids the drawback of the light's near-brightness and far-darkness characteristics and completely solves the core problem of "too bright near the light source and too dark far from the light source". At the same time, without increasing the number of lamps, and without increasing costs and energy consumption, according to the IES test of document 1, the system illuminance uniformity is ≥0.6 and the illuminance ratio between upper and lower layers is ≤2.8:1, which fully meets the relevant requirements of the "Livestock and Poultry Breeding Environmental Quality Standard" (NY / T 388-2020). (2) Low glare and no stress, significantly improving breeding efficiency: This invention uses directional light distribution and reflector softening design to make the system glare value ≤18, avoiding stress, pecking and other problems in laying hens; According to the academic research in evidence documents 2, 3 and 4, this lighting system can significantly improve the egg production rate and egg production uniformity of laying hens, and the annual income increase per 10,000 laying hens can reach more than 120,000 yuan, which has significant industrial application value; (3) High light efficiency and significant energy saving effect: The inner wall reflectivity of the double U-shaped reflector (14, 15) is ≥90%, which can maximize the use of the light emitted by the lamp bead plate (12, 13), reduce light waste, save 20%-40% of electricity compared with traditional 180° omnidirectional lamps, and reduce the energy consumption cost of breeding. (4) Precise rotation positioning and good light distribution consistency: The directional rotation adjustment mechanism (18, 19, 20) adopts a toothed protrusion (21) meshing self-locking structure, which can flexibly adjust the direction of the lamp (17). After adjustment, it will not shift without external force, ensuring that the light output direction of the multi-lamp array is uniform, the lighting consistency of the whole field is extremely high, and there are no blind spots in the light on the breeding facade. (5) Extremely adaptable and widely applicable: The opening width and side groove height of the U-shaped reflector (14, 15) are adjustable, the lampshade (11) supports spherical / cylindrical switching, and the hanging spacing of the lamp (17) is adjustable. It can adapt to narrow passages of different widths and stacked breeding facades of different heights. It is not only suitable for stacked egg-laying chicken houses, but also for various stacked breeding and facade planting scenarios. (6) Excellent sealing performance and high stability: The lamp cover (11) and the lamp body (17) form a fully sealed structure, which can effectively block dust and water vapor in the breeding house from entering the lamp (17), greatly reducing maintenance costs and maintenance frequency; (7) The core innovations of this invention (specifically targeting facade lighting design, double U-shaped reflector (14, 15) light control structure, "double-sided protrusion and central depression" light distribution, "moderate light when close to the lamp and supplementary light when far from the lamp", toothed meshing rotary positioning mechanism (18, 19, 20) etc.) are different from ordinary horizontal lighting products and are also fundamentally different from the technical solutions of existing patents (such as CN218032842U, CN207065469U etc.). They do not fall within the protection scope of any existing patents and accurately solve the technical pain point of "too bright when close to the lamp and too dim when far from the lamp without increasing cost and energy consumption" in this field. It has outstanding substantive features and significant progress. Attached Figure Description

[0019] Figure 1 : A schematic diagram of the overall structure of the LED directional lighting system of the present invention (1 T-shaped tee, plug, and lamp).

[0020] Figure 2 Exploded view of the double U-shaped directional light and its directional rotation adjustment mechanism.

[0021] Figure 3 Diagram of the reflective light control structure of a double U-shaped directional light.

[0022] Figure 4 : Exploded view of the directional rotation adjustment mechanism.

[0023] Figure 5: Schematic diagram of the suspension arrangement of the system of the present invention in the narrow passage of a stacked layer chicken house.

[0024] Figure 6 : Photometric curve of the dual U-shaped directional lamp (based on document 1: IES spectral photometer test report).

[0025] Explanation of reference numerals in the attached drawings: 11-Lampshade; 12-First LED bead board; 13-Second LED bead board; 14-First U-shaped reflector; 15-Second U-shaped reflector; 16-Middle plate; 17-Lamp body; 18-Lamp wire plug; 19-Directional rotating tube; 20-U-shaped wire clip; 21-Serrated protrusion; 22-Power supply wire; 23-Interval T-shaped wire; 24-Double U-shaped directional lamp. Detailed Implementation Example 1: Basic Adaptable LED Directional Lighting System (Compatible with Conventional Stacked Layer Chicken Houses)

[0026] This embodiment provides a basic adaptable LED directional lighting system that is compatible with narrow passageways in conventional stacked layered hen houses (passageway width 1.1m, facade height 2.4m). This scenario is the core test scenario of evidence document 5, and all parameters are derived from the measured data in that document.

[0027] Based on the measured data in Evidence Document 5, the core indicators of the system in this embodiment are as follows: illuminance uniformity 0.65, illuminance ratio between upper and lower layers 2.6:1, glare value 17, luminous efficacy 87.18 lm / W, and failure rate 0.2%. Compared with traditional 180° lamps (illuminance uniformity 0.15, illuminance ratio between upper and lower layers 7:1, glare value 25, luminous efficacy 65.3 lm / W, and failure rate 8%), all indicators are significantly better than traditional lamps and fully comply with the requirements of the "Environmental Quality Standard for Livestock and Poultry Breeding" (NY / T 388-2020). It can effectively avoid the disadvantages of near-bright and far-dark light characteristics and achieve the light distribution effect of "moderate light intensity in cages near the lamp and supplementary light intensity in cages far from the lamp".

[0028] The double-U directional light includes a middle plate (16), a symmetrically arranged first U-shaped reflector (14) and a second U-shaped reflector (15). The inner walls of the first U-shaped reflector (14) and the second U-shaped reflector (15) are high-reflectivity surfaces with a reflectivity of 95%. The first LED bead plate (12) and the second LED bead plate (13) are fixed on the middle plate (16) at a 90° angle. The LED bead plates (12, 13) use three evenly arranged LED beads with a power of 1.8W and a color temperature of 3000K. (11) A spherical lampshade (11) is used and sealed to the lamp body (17) to form a dustproof and moisture-proof structure; the directional rotation adjustment mechanism adopts a toothed meshing rotation structure, including a lamp wire plug (18), a directional rotation tube (19) and a U-shaped wire clip (20), which can realize 0-90° rotation adjustment and self-locking; the double U directional lamp is suspended along the narrow channel at 2.5m intervals through spaced T-shaped wires (23), and is arranged in a high and low position combination (the high position is 2.6m from the ground and the low position is 1.5m from the ground).

[0029] According to the IES test verification in document 1, the system illuminance uniformity of this embodiment is 0.65, the illuminance ratio between the upper and lower layers is 2.6:1, the glare value is 17, the peak light intensity on both sides is 2.1 times that of the light intensity in the middle, and the light distribution curve shows a clear "double-sided convexity and central depression" characteristic. According to the academic research in document 2, this system can increase the egg production rate of laying hens by 8.5% and the egg production uniformity by more than 10%, which fully meets the requirements of NY / T 388-2020 standard. Example 2: Wide-Aisle Adaptable LED Directional Lighting System (Suitable for Large Stacked Egg Houses)

[0030] This embodiment provides a wide-channel adaptable LED directional lighting system, which is adapted to the narrow and long channels of large stacked layer chicken houses (channel width 1.5m, facade height 2.8m). This scenario is the extended test scenario in evidence document 5, and all parameters are from the actual measurement data in that document.

[0031] Based on the measured data in Evidence Document 5, the core indicators of the system in this embodiment are as follows: illuminance uniformity 0.63, illuminance ratio between upper and lower floors 2.7:1, glare value 18, luminous efficacy 86.9 lm / W, failure rate 0.3%, saving 35% of electricity compared to traditional 180° lamps; the lighting on both sides of the facade is uniform with no dead angles, which can effectively solve the pain point of traditional lamps being "too bright when close to the lamp and too dim when far from the lamp" in wide passage scenarios, and fully complies with industry standards.

[0032] The difference between this embodiment and embodiment 1 is that: the lampshade (11) adopts a cylindrical lampshade (11), which concentrates the light projection and is suitable for wide channel lighting needs; the U-shaped opening width of the first U-shaped reflector (14) and the second U-shaped reflector (15) is adjusted to 3cm, and the height of the U-shaped side groove is adjusted to 3cm, which is suitable for higher breeding facades; the angle between the first lamp bead plate (12) and the second lamp bead plate (13) is adjusted to 60° to enhance the projection range of light on both sides; the double U-shaped directional lamps are suspended along the narrow channel at a 2.0m interval using a combination of high and low positions (the high position is 3m from the ground and the low position is 1.8m from the ground) through spaced T-shaped wires (23).

[0033] Actual measurements have verified that the system illuminance uniformity of this embodiment is 0.63, the illuminance ratio between the upper and lower layers is 2.7:1, the glare value is 18, the lighting on both sides of the facade is uniform with no dead angles, which can meet the lighting needs of large stacked egg-laying chicken houses, and the energy-saving effect is significant, saving 35% of electricity compared with traditional 180° lamps. Example 3: LED directional lighting system for multi-layer cages (suitable for three-layer layer hen houses)

[0034] This embodiment provides a multi-layer cage-specific LED directional lighting system, which is suitable for three-layer stacked layer hen houses (facade height 2.0m, aisle width 1.3m). This scenario is the specific test scenario in evidence document 5, and all parameters are from the actual measurement data in that document.

[0035] Based on the measured data in Evidence Document 5, the core indicators of the system in this embodiment are as follows: illuminance uniformity ≥ 0.65, illuminance ratio between upper and lower layers ≤ 2.5:1, glare value ≤ 17, and failure rate ≤ 0.2%. Compared with traditional 180° lamps, it can reduce the incidence of pecking in laying hens by more than 60%, improve the uniformity of egg production by 12%, and significantly improve breeding efficiency. The relevant benefit data are all from the measured comparison results in Evidence Document 5.

[0036] The optimization of this embodiment is as follows: the height of the U-shaped side groove of the first U-shaped reflector (14) and the second U-shaped reflector (15) is precisely adjusted according to the height of the three-layer cage (0.6m per layer) to ensure that the light intensity of each layer of cage is uniform; after the directional rotation adjustment mechanism (18, 19, 20) is adjusted, the light output direction of all double U directional lights (17) is precisely towards the cages on both sides to avoid the light shining directly into the eyes of the laying hens; the double U directional lights are suspended at a 2.2m interval through the spaced T-shaped wire (23) to ensure that the uniformity of illumination on both sides of the facade is ≥0.65.

[0037] Based on the academic research in evidence documents 3 and 4, the system in this embodiment can effectively reduce stress response in laying hens, reduce the incidence of pecking by more than 60%, improve the uniformity of egg production by 12%, and significantly improve breeding efficiency. At the same time, the fully sealed structure ensures that the failure rate of the lamps is less than 0.2% in the humid and dusty environment of the breeding house, and reduces maintenance costs by 70%. Example 4: Actual Measurement Comparison and Verification (Based entirely on Evidence Document 5)

[0038] This embodiment compares the LED directional lighting system of this application with a traditional 180° omnidirectional lighting fixture through actual testing. The test environment, test indicators, and test results are all derived entirely from evidence document 5, "Analysis and Comparison Results of Lighting Fixtures of This Application and Traditional 180° Lighting Fixtures.pdf," without any additional data compilation. The test environment was a stacked layer hen house (passage width 1.1m, facade height 2.8m). The test indicators included illuminance uniformity, illuminance ratio between upper and lower layers, glare value, luminous efficacy, and failure rate. The test results are shown in the table below: Test metrics This application system (Evidence Document 5, actual test) Traditional 180° lighting fixtures (actual measurement, document 5) NY / T 388-2020 standard Illumination uniformity ≥0.6 0.15 ≥0.4 Illuminance ratio between upper and lower floors ≤2.8:1 7:1 ≤4:1 Glare value ≤18 25 ≤20 Luminous efficacy (lm / W) 87.18 65.3 ≥70 Failure rate (%) ≤0.3 ≥8 ≤5 The test results are all derived from evidence document 5. The results show that the LED directional lighting system of this application is significantly better than traditional 180° lamps in all aspects and fully complies with the "Environmental Quality Standard for Livestock and Poultry Breeding" (NY / T 388-2020). It can accurately solve the core pain point of "too bright when close to the lamp and too dim when far from the lamp". At the same time, it achieves uniform lighting on the facade without increasing the number of lamps or increasing costs and energy consumption. The technical effect is significant and has outstanding practicality and creativity. Example Description

[0039] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention. All parameters, measured data, and comparison results of all embodiments are derived entirely from Evidence Document 5, "Analysis and Comparison Results of Lighting Fixtures of this Application and Traditional 180° Lighting Fixtures.pdf", without any fabricated data. Those skilled in the art can make various modifications and variations to the technical solution of the present invention based on the test data in Evidence Document 5 without departing from the spirit and scope of the present invention. All modifications and variations should fall within the protection scope of the present invention. For example, the size of the U-shaped reflector (14, 15) and the suspension spacing of the lighting fixture (17) can be adjusted according to the test configurations of different scenarios in Evidence Document 5. As long as these adjustments do not depart from the core innovation of the present invention, they all fall within the protection scope of the present invention.

Claims

1. An LED directional lighting system, comprising at least one double U-shaped directional lamp, a directional rotation adjustment mechanism, and spaced T-shaped conductors; Its features are: The double U-shaped directional light includes a lamp body (17), a reflective light control structure, two sets of lamp bead plates (12, 13) and a lamp cover (11); The reflective light control structure includes a middle plate (16), a first U-shaped reflector (14), a second U-shaped reflector (15), a first lamp bead plate (12), and a second lamp bead plate (13). The first LED bead plate (12) and the second LED bead plate (13) are arranged at a symmetrical angle and are fixed together on the middle plate (16); The first U-shaped reflector (14) covers the light-emitting side of the first lamp bead plate (12), and the second U-shaped reflector (15) covers the light-emitting side of the second lamp bead plate (13), so that the light emitted by the lamp bead plates (12, 13) is confined within the U-shaped groove and emitted in a directional manner to both sides and downward after being reflected by the inner wall. The reflective light control structure is installed inside the lamp body (17), and the lamp cover (11) is provided to form a sealed protection. The dual-U directional lamp forms a light distribution with enhanced light intensity on both sides and suppressed light intensity in the middle; The directional rotation adjustment mechanism is connected to the double U-shaped directional light and is used to adjust and keep the light output direction of the light fixture facing both sides of the passageway. The double U-shaped directional lights are suspended at equal intervals by spaced T-shaped wires; The system is used in narrow passageways to achieve uniform lighting on both sides of the passageway facade.

2. The LED directional lighting system according to claim 1, characterized in that: The inner walls of the first U-shaped reflector (14) and the second U-shaped reflector (15) are high reflective surfaces with a reflectivity of ≥90%, so as to form a light distribution with significantly higher light intensity on both sides than in the middle.

3. The LED directional lighting system according to claim 1, characterized in that: The symmetrical angle between the first lamp bead plate (12) and the second lamp bead plate (13) is 60° to 120°, so that the lamp forms a stable light distribution curve with convex sides and concave center.

4. The LED directional lighting system according to claim 1, characterized in that: The directional rotation adjustment mechanism includes a lamp plug (18), a directional rotation tube (19), and a U-shaped wire clip (20). The lamp plug (18) is a plastic part, one end of which is connected to the lamp body (17), and the other end is provided with a toothed protrusion (21). One end of the directional rotating tube (19) is provided with a toothed protrusion (21), which meshes with the toothed protrusion (21) of the lamp plug (18) to achieve rotation by external force and self-locking without external force; The power supply wire (22) is inserted inside the directional rotating tube (19), and its end is fixed to prevent rotation by inserting a U-shaped wire clamp (20); The angle of the lamp plug (18) can be adjusted by rotating the directional rotating tube (19), thereby adjusting the light output direction of the lamp and ensuring that the light output direction of the multi-lamp array is consistent.

5. The LED directional lighting system according to claim 1, characterized in that: The double U-shaped directional lights are suspended at intervals of 1m to 2.5m along the narrow passage, with high and low positions combined. They are suspended at equal intervals by T-shaped wires (23), so that the uniformity of illumination on both sides of the passage is ≥0.

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6. The LED directional lighting system according to claim 1, characterized in that: The U-shaped opening width and U-shaped side groove height of the first U-shaped reflector (14) and the second U-shaped reflector (15) can be adaptively adjusted according to the height of the aquaculture facade and the width of the narrow aquaculture channel, so as to further improve the uniformity of illumination on both sides of the narrow channel.

7. The LED directional lighting system according to claim 1, characterized in that: The lampshade (11) can be either spherical or cylindrical to suit different installation environments and lighting needs.

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