Energy-saving high ceiling lamp

Abstract

The application discloses an energy-saving high ceiling lamp, which comprises an LED light source module and an optical lens, the optical lens is an integrated lens, a plurality of light transmission points on the integrated lens are distributed in multiple circles and are one-to-one matched with LED lamp beads on the LED light source module, the light emission angle is effectively controlled, and the light emission efficiency is maximally improved; the energy-saving high ceiling lamp further comprises a redundant constant current driving circuit, the redundant constant current driving circuit drives the LED light source module at 70%-90% of the rated working current, the junction temperature rise is effectively inhibited, the initial luminous decay is delayed, the effective service life of the lamp is significantly prolonged, and the operation and maintenance cost is reduced; the control chip is used for comparing the monitoring ambient illuminance received by the light sensor with a preset target illuminance threshold value, dynamically adjusting the driving current of the LED light source module through an adjustable constant current driving module according to a first compensation current value calculated by a luminous compensation module, realizing closed-loop automatic compensation of the LED luminous flux decay, and maintaining the light emission efficiency of the whole lamp.

Description

Technical Field

[0001] This invention relates to the field of lighting fixtures, specifically to an energy-saving high-bay lamp. Background Technology

[0002] High-bay lights are suitable for high-ceiling industrial and commercial spaces (such as factories, warehouses, stadiums, and transportation hubs). Existing high-bay light technology has the following drawbacks in practical applications: (1) Existing high-bay lights have low overall luminous efficacy; (2) Existing high-bay lights have continuously reduced luminous flux after working for a period of time under rated drive current, resulting in reduced illuminance and affecting lighting quality, which needs to be improved. Summary of the Invention

[0003] One of the technical problems to be solved by this application is to overcome the defects of the above-mentioned related technologies and provide an energy-saving high-bay lamp with high overall lighting efficiency and effective reduction of light flux attenuation.

[0004] The technical solution adopted by this invention to solve the technical problem is as follows: an energy-saving high-bay light, comprising an LED light source module and an optical lens, wherein the optical lens is an integrated lens, and a plurality of light-transmitting points on the integrated lens are distributed in multiple rings and are adapted one by one to the LED beads on the LED light source module. Also includes: A redundant constant current drive circuit is electrically connected to the LED light source module and is used to supply the LED light source module with 70% to 90% of its rated operating current. A light sensor is used to monitor ambient light levels. The light compensation module is used to calculate the first compensation current value based on the difference between the monitored ambient illuminance and the preset target illuminance threshold. An adjustable constant current drive module is electrically connected to the LED light source module and is used to provide compensation current to the LED light source module. The redundant constant current drive circuit, the optical sensor, the optical flux compensation module, and the adjustable constant current drive module are electrically connected to the control chip, respectively. The control chip is used to compare the received monitored ambient illuminance with the preset target illuminance threshold, and dynamically adjust the driving current of the LED light source module through the adjustable constant current drive module according to the first compensation current value calculated by the light flux compensation module.

[0005] Compared with related technologies, this invention has the following advantages: By precisely designing the LED light source module and optical lens, and using one-to-one matching light transmission points and LED beads, the light emission angle is effectively controlled, maximizing the light emission efficiency; the redundant constant current drive circuit drives the LED light source module at 70%~90% of the rated operating current, effectively suppressing junction temperature rise, delaying initial luminous flux attenuation, significantly extending the effective life of the lamp, and reducing maintenance costs; the addition of a light sensor, luminous flux compensation module, and adjustable constant current drive module realizes closed-loop automatic compensation for LED luminous flux attenuation, maintaining the overall light emission efficiency of the lamp.

[0006] As an improvement, a time measurement module is also included to monitor the cumulative operating time of the LED light source module. This time measurement module is electrically connected to the control chip. The control chip looks up a table showing the relationship between the cumulative operating time and the compensation current to obtain a second compensation current value. It then calculates a weighted average of the second and first compensation current values ​​and dynamically adjusts the drive current of the LED light source module through an adjustable constant current drive module. This dual-factor current compensation, combining cumulative operating time and luminous flux attenuation, better maintains the overall lamp's light output efficiency.

[0007] Preferably, the LED light source module uses SMD chips. This effectively controls the LED beads arranged in an array, achieving uniform light spot superposition.

[0008] Preferably, the integrated lens has a light emission angle of 85 to 95 degrees. The overall light emission efficiency is highest when the light emission angle is close to 90 degrees.

[0009] Preferably, the integrated lens is made of weather-resistant PC material with a light transmittance of >90%. Weather-resistant PC material is impact-resistant and high-temperature resistant, and its operating temperature range is -40°C to +85°C, which can meet the requirements of long-term use in industrial environments.

[0010] Preferably, the distance between the light-incident surface of the light-transmitting point and the light-emitting surface of the LED bead is 0.8mm, and the light-exiting surface of the light-transmitting point has a micro-prism texture layer. This effectively fits the light-emitting surface of the LED bead, achieving efficient convergence of light and reducing stray light loss; the micro-prism texture treatment on the light-exiting surface softens strong light and improves glare control.

[0011] Preferably, both surfaces of the integrated lens are coated with an anti-UV anti-reflection film. This can improve the light transmittance of the integrated lens made of weather-resistant PC material by 4% to 6%, while effectively delaying the aging of the weather-resistant PC material.

[0012] Preferably, the integrated lens has a uniform wall thickness of 3 mm and a draft angle of 1.5°. This ensures the structural strength of the integrated lens, prevents shrinkage and cracking during injection molding, meets the demolding requirements of injection molding, and avoids edge deformation.

[0013] Preferably, the integrated lens has a wire-shielding post at its center. This is used to shield the wires and prevent line shadows from appearing in the center of the luminaire.

[0014] Preferably, the thickness of the shielding post is 2 to 4 times the height of the light-transmitting spherical surface. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a three-dimensional view of the optical lens of the present invention.

[0017] Figure 3 This is a bottom view of the optical lens of the present invention.

[0018] Figure 4 This is a side view of the optical lens of the present invention.

[0019] Figure 5 This is a light intensity distribution curve of the present invention.

[0020] Figure 6 This is the relative spectral power distribution diagram and chromaticity diagram of the present invention.

[0021] The following components are shown in the diagram: 1. Connector fixing screw, 2. Anti-loosening screw, 3. Hanger connecting component, 4. Power supply fixing screw, 5. Drive power supply, 6. Pressure block fixing screw, 7. Sealing pressure block, 8. Inlet sealing component, 9. Canopy light housing, 10. LED light source module, 11. Light board fixing screw, 12. Sealing ring, 13. Optical lens, 131. Light transmission point, 132. Wire blocking post, 14. Lens fixing screw. Detailed Implementation

[0022] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] The energy-saving high-bay light in this embodiment is as follows: Figure 1As shown, it includes a connecting screw 1, an anti-loosening screw 2, a hanging rod connecting part 3, several power supply fixing screws 4, a drive power supply 5, several pressure block fixing screws 6, a sealing pressure block 7, an inlet sealing part 8, a ceiling light housing 9, an LED light source module 10, several light board fixing screws 11, a sealing ring 12, an optical lens 13, and several lens fixing screws 14. It also includes: a redundant constant current drive circuit, electrically connected to the LED light source module 10, used to supply the LED light source module 10 with a working current of 70% to 90% of its rated working current; a light sensor, used to monitor ambient illuminance, the light sensor being an integrated ambient light sensor module, with its photosensitive surface facing the same direction as the light output direction of the lamp; a luminous flux compensation module, used to calculate a first compensation current value based on the difference between the monitored ambient illuminance and a preset target illuminance threshold; and an adjustable constant current drive module, electrically connected to the LED light source module 10, used to provide compensation current to the LED light source module 10; the redundant constant current drive circuit, the light sensor, the luminous flux compensation module, and the adjustable constant current drive module are each electrically connected to a control chip; the control chip is used to compare the received monitored ambient illuminance with the preset target illuminance threshold, and based on the first compensation current value calculated by the luminous flux compensation module, dynamically adjust the drive current of the LED light source module 10 through the adjustable constant current drive module to achieve closed-loop automatic compensation for LED luminous flux attenuation and maintain the overall lamp output efficiency.

[0025] By precisely designing the LED light source module 10 and optical lens, and using one-to-one matching light transmission points 131 and LED beads, the light emission angle is effectively controlled to maximize the light emission efficiency. The light emission angle of the integrated lens is 85~95 degrees. The redundant constant current drive circuit drives the LED light source module 10 at 70%~90% of the rated operating current, effectively suppressing the junction temperature rise, delaying the initial luminous flux attenuation, significantly extending the effective life of the lamp, and reducing maintenance costs. The addition of a light sensor, a luminous flux compensation module, and an adjustable constant current drive module realizes closed-loop automatic compensation for LED luminous flux attenuation, maintaining the overall light emission efficiency of the lamp.

[0026] As an improvement, a time measurement module is also included to monitor the cumulative operating time of the LED light source module 10. This time measurement module is electrically connected to the control chip. The control chip looks up the relationship table between the cumulative operating time and the compensation current to obtain a second compensation current value. It then calculates a weighted average of the second and first compensation current values ​​and dynamically adjusts the driving current of the LED light source module 10 through an adjustable constant current drive module. This dual-factor current compensation, combining cumulative operating time and luminous flux attenuation, better maintains the overall lamp's light output efficiency. The sum of the weighting coefficients of the first and second compensation current values ​​equals 1, and the longer the cumulative operating time, the larger the weighting coefficient of the second compensation current value.

[0027] In this embodiment, the optical lens 13 is as follows: Figure 2 and Figure 3 As shown, the external dimensions are Ø227mm×3mm, which is compatible with modular, equally spaced, circularly arranged SMD chips; it can effectively achieve uniformity of light spot superposition.

[0028] The optical lens 13 is made of weather-resistant PC material, which is impact-resistant and high-temperature resistant. It has an operating temperature range of -40°C to +85°C and can meet the long-term use in industrial environments. The light transmittance is >90%.

[0029] The optical lens 13 has a uniform wall thickness of 3mm, which ensures structural strength and prevents shrinkage and cracking during injection molding. The optical lens 13 is equipped with a 1.5° draft angle to ensure the demolding requirements of injection molding and prevent edge deformation.

[0030] The light incident surface of the optical lens 13 is a concave parabolic arc shape, and the distance between it and the light-emitting surface of the LED lamp bead is 0.8mm. This can effectively fit the light-emitting surface of the LED lamp bead, achieve efficient convergence of light, and reduce the loss of stray light.

[0031] The light-emitting surface of the optical lens 13 is a partitioned freeform surface. The curvature parameters are independently optimized by the light simulation software, which can accurately control the light direction, perform light superposition, improve uniformity, and achieve a surface accuracy of ±0.015mm.

[0032] The light-emitting surface of the optical lens 13 is treated with a micro-prism texture to soften strong light and improve glare control.

[0033] The optical lens 13 is coated with an anti-ultraviolet coating on both sides, which can improve the light transmittance of the optical lens 13 made of weather-resistant PC material by 4% to 6%, while effectively delaying the aging of the weather-resistant PC material.

[0034] In optical path propagation: In the incident section, the light emitted by the LED beads first comes into contact with the light incident surface of the concave surface of the optical lens 13. After refraction, the chaotic divergent light rays are initially converged and guided to the freeform surface unit inside the optical lens 13. Control phase: When light reaches the freeform surface unit, incident light at different angles is precisely refracted twice by the surface - large-angle divergent light is refracted to the edge of the working surface, and small-angle direct light is refracted to the center of the working surface, realizing the lighting logic of "edge supplementary light and center control light". Emission stage: The light rays, controlled by the freeform surface unit, pass through the microprism texture layer of the light emission surface. The light rays are further softened and then projected onto the working surface, eventually forming a uniformly covered light spot, achieving an illuminance uniformity of 0.6 or higher.

[0035] In addition, a ray-blocking post 132 is provided at the center of the optical lens 13, and the ray-blocking post 132 is as follows: Figure 4As shown, the light-emitting surface of the optical lens 13 is protruded. The thickness of the wire-blocking post 132 is 2 to 4 times the height of the spherical surface of the light-transmitting point 131. It is used to block the wires and prevent the wires and their welding points with the LED light source module 10 from forming shadows on the integrated lens.

[0036] Using a GO-R5000 distributed photometer system, an ID-1000 precision intelligent photometer detector, powered by a DPS1060 intelligent frequency converter AC power supply, and sampled by a HAAS-2000 high-precision rapid spectroradiometer, with a D215S total spectral radiant flux standard lamp as a reference, and in accordance with GB / T24824-2009 Test Method for LED Modules for General Lighting and GB / T9468-2008 General Requirements for Luminaire Distribution Photometric Measurement, under the following conditions: luminous flux test distance 2.1m, luminous intensity distribution test distance 30.0m, power supply AC220V / 50Hz, preheating time 0h, stabilization time 0.5h, total test duration 1.5h, and ignition orientation with the luminous surface facing downwards, the luminous intensity distribution curve of this energy-saving high-bay lamp is as follows: Figure 5 As shown, with an average beam angle of 87 degrees, the relative spectral power distribution diagram and chromaticity diagram at chromaticity coordinates (0.3520, 0.3816) are as follows. Figure 6 As shown, the correlated color temperature is 4867K, and the average color rendering index is 70.7. The total luminous flux of this energy-saving high-bay lamp is 11254 lm, and the luminous efficacy is 223.56 lm / W. Under the condition that the luminous efficacy is not less than 245 lm / W in the initial lighting state, the luminous efficacy is controlled at >220 lm / W.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy-saving high-bay light, comprising an LED light source module and an optical lens, characterized in that, The optical lens is an integrated lens, with multiple rings of light-transmitting points distributed on the integrated lens and each one adapted to a specific LED bead on the LED light source module. Also includes: A redundant constant current drive circuit is electrically connected to the LED light source module and is used to supply the LED light source module with 70% to 90% of its rated operating current. A light sensor is used to monitor ambient light levels. The light compensation module is used to calculate the first compensation current value based on the difference between the monitored ambient illuminance and the preset target illuminance threshold. An adjustable constant current drive module is electrically connected to the LED light source module and is used to provide compensation current to the LED light source module. The redundant constant current drive circuit, the optical sensor, the optical flux compensation module, and the adjustable constant current drive module are electrically connected to the control chip, respectively. The control chip is used to compare the received monitored ambient illuminance with the preset target illuminance threshold, and dynamically adjust the driving current of the LED light source module through the adjustable constant current drive module according to the first compensation current value calculated by the light flux compensation module.

2. The energy-saving high-bay light according to claim 1, characterized in that, It also includes a time measurement module for monitoring the cumulative working time of the LED light source module; The time measurement module is electrically connected to the control chip. The control chip looks up the relationship table between the cumulative working time and the compensation current to obtain the second compensation current value, and calculates the second compensation current value and the first compensation current value by weighting. The driving current of the LED light source module is dynamically adjusted by the adjustable constant current driving module.

3. The energy-saving high-bay light according to claim 1 or 2, characterized in that, The LED light source module uses an SMD chip.

4. The energy-saving high-bay light according to claim 1 or 2, characterized in that, The output angle of the integrated lens is 85-95 degrees.

5. The energy-saving high-bay light according to claim 1 or 2, characterized in that, The integrated lens is made of weather-resistant PC material with a light transmittance of >90%.

6. The energy-saving high-bay light according to claim 5, characterized in that, The distance between the light-incident surface of the light-transmitting point and the light-emitting surface of the LED bead is 0.8mm, and the light-outceasing surface of the light-transmitting point has a micro-prism texture layer.

7. The energy-saving high-bay light according to claim 5, characterized in that, The integrated lens has an anti-ultraviolet light coating on both surfaces.

8. The energy-saving high-bay light according to claim 5, characterized in that, The integrated lens has a uniform wall thickness of 3 mm and a draft angle of 1.5°.

9. The energy-saving high-bay light according to claim 1 or 2, characterized in that, The integrated lens has a wire-blocking post at its center.

10. The energy-saving high-bay light according to claim 9, characterized in that, The thickness of the shielding post is 2 to 4 times the height of the spherical surface of the light-transmitting point.

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