Integrated power supply type LED street lamp

Abstract

The utility model discloses a kind of integral type power supply LED street lamps, comprising: a rear part is equipped with standard flange interface street lamp shell, the flange interface is fixedly connected with lamp pole by bolt, and anti-loose washer is equipped at interface;From top to bottom sequentially installed lens, reflector and integrated DOB module, integrated DOB module is contacted with street lamp shell bottom heat dissipation fin by heat-conducting silicone grease;The integral type power supply LED street lamp of the utility model, in structure, its power supply and light source adopt integrated structure, production is convenient, small in size, low in cost, easy to assemble;At the same time, since the research and development, production technology of power supply and light source, product is more competitive by oneself control;And after testing, integrated design effectively improves heat dissipation efficiency, prolongs light source life, ensures that light decay is less than 3% per thousand hours;Whole lamp protection level reaches IP66, adapts to various severe weather environment, maintenance cost is low, and reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of LED lighting fixture technology, and in particular to an integrated power supply type LED street light. Background Technology

[0002] LED streetlights are a branch of LED lighting fixtures. They have gradually become popular due to their energy saving and long service life. Currently, LED streetlights on the market usually use branded and relatively mature independent power supplies. Manufacturers generally purchase power supplies from specialized power supply manufacturers, produce the light source themselves, and then assemble the two together with wires. This results in large product size, high cost, and complex production processes. Utility Model Content

[0003] This utility model addresses the aforementioned problems by proposing an integrated power supply type LED street light to solve them.

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated power supply type LED street light, comprising:

[0005] A street lamp housing with a standard flange interface at the rear, wherein the flange interface is fixedly connected to the lamp pole by bolts and an anti-loosening washer is provided at the interface;

[0006] The lens, reflector and integrated DOB module are installed in order from top to bottom. The lens adopts an aspherical optical design and has a focal length of 50mm±5mm.

[0007] The integrated DOB module is in contact with the heat dissipation fins at the bottom of the street lamp housing via thermal grease. The heat dissipation fins are 2mm thick and 8mm apart.

[0008] The reflector is coated with an aluminum-based reflective film with a reflectivity of ≥95%. It is attached to the lens via a snap-fit ​​structure, and the sealing surface uses a double O-ring waterproof rubber ring.

[0009] As a preferred embodiment of this invention, the integrated DOB module includes:

[0010] The FR4 material DOB board is 1.5mm thick and has a 35μm thick copper circuit layer on its surface.

[0011] The surface-mount LED light source area uses 2835 packaged devices, with a color temperature of 5000K±300K and a color rendering index Ra≥80;

[0012] Linear constant current power supply circuit: includes AP3766 chip, operating frequency 65kHz, efficiency ≥92%;

[0013] Rectifier circuit: MB10S bridge rectifier, reverse withstand voltage 1000V;

[0014] Surge protection circuit: composed of SMBJ18CA transient suppression diode and GDT-90S gas discharge tube.

[0015] As a further preferred embodiment of this utility model, the LED light source area adopts a 3-string 6-parallel topology, with each string containing 12 LEDs and a total power of 30W±5%.

[0016] As a further preferred embodiment of this invention, the linear constant current power supply comprises:

[0017] Input EMI filter, common mode inductor inductance 10mH, X capacitor 0.1μF;

[0018] The primary-side control chip employs primary-side feedback (PSR) technology.

[0019] The secondary-side synchronous rectifier circuit uses NCE30N65 MOSFETs.

[0020] As a further preferred embodiment of this utility model, the surge protection circuit can withstand a 6kV / 3kA surge in differential mode and a 10kV / 5kA surge in common mode.

[0021] As a further preferred embodiment of this utility model, the lens is made of PMMA material with a light transmittance ≥93%, a surface hardness ≥3H, and a temperature resistance range of -40℃ to 120℃.

[0022] As a further preferred embodiment of this utility model, the waterproof rubber ring is made of EPDM material with a Shore hardness of 60±5 and a compression set of ≤25%.

[0023] As a further preferred embodiment of this utility model, the street lamp housing is made of die-cast aluminum, with anodized surface treatment, film thickness ≥15μm, and passes salt spray test for 500 hours.

[0024] This utility model's integrated power supply LED street light features a unique integrated structure for both the power supply and light source. This design facilitates production, reduces size and cost, and makes assembly convenient. Furthermore, since the R&D and production technologies for both the power supply and light source are controlled in-house, the product is more competitive. Testing has shown that the integrated design effectively improves heat dissipation efficiency, extends the lifespan of the light source, and ensures light decay of less than 3% per thousand hours. The entire lamp boasts an IP66 protection rating, making it adaptable to various harsh weather conditions, with low maintenance costs and high reliability. Attached Figure Description

[0025] Figure 1 The diagram shown is a schematic diagram of the unfolded structure of this utility model;

[0026] Figure 2 The diagram shown is a front structural diagram of this utility model;

[0027] Figure 3 The diagram shown is a side view of the present invention.

[0028] Figure 4 The diagram shown is a structural schematic of the integrated DOB module in this utility model;

[0029] Figure 5 The diagram shown is a structural frame of the linear constant current power supply in this invention.

[0030] The components include: 1. Streetlight housing; 2. Light pole; 3. Lens; 4. Reflector; 5. Integrated DOB module; 6. Heat sink fins; 7. Aluminum-based reflective film; 8. DOB board; 9. Surface mount LED light source area; 10. Linear constant current power supply circuit; 11. Rectifier circuit; 12. Surge protection circuit; 13. Input EMI filter; 14. Primary side control chip; 15. Secondary side synchronous rectification circuit; 16. Waterproof rubber ring. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Combination Figure 1 , Figure 2 and Figure 3 It is known that the integrated power supply type LED street light includes: a street light housing 1 with a standard flange interface at the rear, the flange interface being fixedly connected to the light pole 2 by bolts, and an anti-loosening washer being provided at the interface, thereby forming a connection between the street light housing 1 and the light pole 2.

[0033] In this utility model, the preferred street lamp housing 1 is made of die-cast aluminum, with anodized surface treatment, film thickness ≥15μm, and passes salt spray test for 500 hours.

[0034] This utility model also includes: a lens 3, a reflector 4, and an integrated DOB module 5 installed sequentially from top to bottom. The lens 3 adopts an aspherical optical design with a focal length of 50mm ± 5mm. In this utility model, the integrated DOB module 5 contacts the heat dissipation fins 6 at the bottom of the street lamp housing 1 via thermally conductive silicone grease. In this embodiment, the thickness of the heat dissipation fins 6 is 2mm, and the spacing is 8mm. In this utility model, the surface of the reflector 4 is coated with an aluminum-based reflective film 7 with a reflectivity ≥95%. It is attached to the lens 3 via a snap-fit ​​structure, and the sealing surface uses a double O-ring waterproof sealant 16, forming a waterproof seal at the joint between the lens 3 and the reflector 4. In this utility model, the waterproof sealant 16 is preferably made of EPDM material with a Shore hardness of 60 ± 5 and a compression set ≤25%.

[0035] In this invention, lens 3 is made of PMMA material with a light transmittance ≥93%, a surface hardness ≥3H, and a temperature resistance range of -40℃ to 120℃.

[0036] Combination Figure 4 It can be seen that, in this utility model, the preferred integrated DOB module 5 includes:

[0037] The DOB board 8 is made of FR4 material with a thickness of 1.5mm and has a 35μm thick copper circuit layer on its surface.

[0038] The surface-mount LED light source area 9 uses a 2835 package device with a color temperature of 5000K±300K and a color rendering index Ra≥80.

[0039] Linear constant current power supply circuit 10: The linear constant current power supply circuit 10 includes an AP3766 chip, with an operating frequency of 65kHz and an efficiency of ≥92%.

[0040] Rectifier circuit 11: This rectifier circuit 11 uses an MB10S bridge rectifier with a reverse withstand voltage of 1000V;

[0041] Surge protection circuit 12: This surge protection circuit 12 consists of an SMBJ18CA transient suppression diode and a GDT-90S gas discharge tube.

[0042] In this invention, the preferred surface-mount LED light source area 9 adopts a 3-string 6-parallel topology, with each string containing 12 LEDs and a total power of 30W ± 5%.

[0043] Combination Figure 5 It can be seen that, in this utility model, the preferred linear constant current power supply circuit 10 includes:

[0044] Input EMI filter 13, common mode inductor inductance 10mH, X capacitor 0.1μF;

[0045] The primary-side control chip 14 adopts primary-side feedback (PSR) technology;

[0046] The secondary-side synchronous rectifier circuit 15 uses NCE30N65 MOSFETs.

[0047] In this invention, the preferred surge protection circuit 12 can withstand a 6kV / 3kA surge in differential mode and a 10kV / 5kA surge in common mode.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An integrated power supply type LED street light, characterized in that, include: A street lamp housing with a standard flange interface at the rear, wherein the flange interface is fixedly connected to the lamp pole by bolts and an anti-loosening washer is provided at the interface; The lens, reflector and integrated DOB module are installed in order from top to bottom. The lens adopts an aspherical optical design and has a focal length of 50mm±5mm. The integrated DOB module is in contact with the heat dissipation fins at the bottom of the street lamp housing via thermal grease. The heat dissipation fins are 2mm thick and 8mm apart. The reflector is coated with an aluminum-based reflective film with a reflectivity of ≥95%. It is attached to the lens via a snap-fit ​​structure, and the sealing surface uses a double O-ring waterproof rubber ring.

2. The integrated power supply type LED street light according to claim 1, characterized in that, The integrated DOB module includes: The FR4 material DOB board is 1.5mm thick and has a 35μm thick copper circuit layer on its surface. The surface-mount LED light source area uses 2835 packaged devices, with a color temperature of 5000K±300K and a color rendering index Ra≥80; Linear constant current power supply circuit: includes AP3766 chip, operating frequency 65kHz, efficiency ≥92%; Rectifier circuit: MB10S bridge rectifier, reverse withstand voltage 1000V; Surge protection circuit: composed of SMBJ18CA transient suppression diode and GDT-90S gas discharge tube.

3. The integrated power supply type LED street light according to claim 2, characterized in that, The LED light source area adopts a 3-string 6-parallel topology, with each string containing 12 LEDs and a total power of 30W±5%.

4. The integrated power supply type LED street light according to claim 2, characterized in that, The linear constant current power supply includes: Input EMI filter, common mode inductor inductance 10mH, X capacitor 0.1μF; The primary-side control chip employs primary-side feedback (PSR) technology. The secondary-side synchronous rectifier circuit uses NCE30N65 MOSFETs.

5. The integrated power supply type LED street light according to claim 2, characterized in that, The surge protection circuit can withstand a 6kV / 3kA surge in differential mode and a 10kV / 5kA surge in common mode.

6. The integrated power supply type LED street light according to claim 1, characterized in that, The lens is made of PMMA material with a light transmittance of ≥93%, a surface hardness of ≥3H, and a temperature resistance range of -40℃ to 120℃.

7. The integrated power supply type LED street light according to claim 1, characterized in that, The waterproof rubber ring is made of EPDM material with a Shore hardness of 60±5 and a compression set of ≤25%.

8. The integrated power supply type LED street light according to claim 1, characterized in that, The street light housing is made of die-cast aluminum with an anodized surface, a film thickness of ≥15μm, and passes a salt spray test for 500 hours.

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