A full cut-off light distribution type outdoor floodlight

Abstract

The utility model discloses a kind of full cut-off light distribution type outdoor floodlights, belong to lighting equipment technical field.The lamp includes lamp body and mounting box, and the outer surface of lamp body is equipped with streamline through type heat dissipation drainage groove, and the back cavity is equipped with fin;Mounting box is detachably connected with lamp body, and its back is embedded with EPDM mounting plate with general mounting hole and detachable hole plug.Optical assembly is arranged at the bottom of lamp body, and strict Type IV full cut-off light distribution is realized by using polycarbonate lens.Sensor assembly is independent replaceable module, and is installed below mounting box.The utility model has excellent light pollution control ability, high-efficiency passive heat dissipation performance, convenient on-site maintenance and flexible installation adaptability, and is especially suitable for outdoor lighting place needing to meet dark sky standard.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, specifically to a floodlight suitable for outdoor lighting, having full cutoff light distribution characteristics, a modular structure, and being easy to install and maintain. Background Technology

[0002] Outdoor floodlights are widely used in architectural lighting, plaza lighting, parking lot lighting, and other applications, and their lighting effects, energy-saving performance, and environmental friendliness are receiving increasing attention. In recent years, with the promotion of the "dark sky" lighting concept, full cutoff light distribution (i.e., light is projected only downwards, with no upward scattering) has become an important design direction for outdoor lighting products. These luminaires must ensure uniform illumination and luminous efficacy while strictly controlling light pollution to avoid disturbing the night sky and surrounding environment. Furthermore, outdoor luminaires often need to integrate intelligent control functions such as light control and human body sensing, and possess good heat dissipation, waterproofing, and dustproofing performance to adapt to complex and changing usage environments.

[0003] Most outdoor floodlights currently on the market adopt an integrated or semi-modular structure, with their optical system, drive module, and sensor control unit usually fixed inside the lamp body, which presents the following problems:

[0004] 1. Insufficient light distribution control: Most floodlights fail to achieve strict full cutoff light distribution, resulting in upward scattering light, which does not meet the requirements for dark sky certification;

[0005] 2. Simple heat dissipation structure: Heat dissipation relies mainly on the simple fin design on the surface of the lamp body, which has limited heat dissipation efficiency and affects the lifespan and luminous efficacy of the lamp.

[0006] 3. Inconvenient maintenance: Key components such as sensors and drivers are mostly built-in and fixed. If damaged, they need to be completely disassembled or returned to the factory for repair, making on-site replacement difficult.

[0007] 4. Poor installation adaptability: Most products only support a single installation method (such as wall mounting) and lack flexible ground mounting or angle adjustment accessories;

[0008] 5. Structural redundancy: Some lighting fixtures are too large and heavy in pursuit of appearance or protection performance, which does not conform to the trend of compactness and lightweighting.

[0009] In summary, while pursuing high luminous efficacy, long lifespan, and intelligent control, existing outdoor floodlights often struggle to achieve a good balance between full-cutoff light distribution, efficient heat dissipation, modular maintenance, and compact structure. In particular, integrating multiple functional modules (such as infrared sensing, light control, and multi-level dimming drivers) within a limited space, while ensuring their heat dissipation performance and protection rating, has become a key bottleneck restricting product performance improvement. Furthermore, existing luminaires still have significant shortcomings in terms of ease of sensor replacement after damage and the diversity of installation methods.

[0010] Therefore, there is an urgent need for a new type of outdoor floodlight that can achieve multiple goals such as compact structure, optimized heat dissipation, modular maintainability, and flexible installation, while meeting the requirements of full cutoff light distribution, high luminous efficiency, and long lifespan, so as to meet the higher requirements of modern outdoor lighting for performance, environmental protection, and user experience. Summary of the Invention

[0011] To address the problems of existing outdoor floodlights, such as light pollution due to inadequate light distribution control, limited lifespan due to a single heat dissipation structure, inconvenient maintenance of key components like sensors, and poor adaptability in installation methods, this utility model aims to provide a compact and high-performance outdoor floodlight. Its core objective is:

[0012] 1. Achieve full cutoff light distribution: Strictly limit light to only project downwards, meet dark sky standards, and reduce light pollution.

[0013] 2. Optimized heat dissipation and protection: Through innovative structural design, it achieves efficient passive heat dissipation and IP66 protection in a compact space.

[0014] 3. Improved maintainability and installation flexibility: The modular design makes it easy to replace components such as sensors and drivers in the field and supports a variety of installation scenarios.

[0015] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0016] A fully cutoff outdoor floodlight mainly includes a lamp body, a mounting box, optical components, and a sensor assembly. The lamp body has a hollowed-out cavity on its back, with a streamlined outer surface and multiple heat dissipation and drainage grooves extending from the top to the bottom. A heat sink is installed inside the cavity. The mounting box is detachably connected to the lamp body via bolts and metal washers, forming a sealed enclosure. A driver and switch assembly are housed within this space, each secured by an independent bracket. Aluminum plugs are located on both sides of the mounting box, and an EPDM mounting plate is embedded on the back. This mounting plate has multiple universal mounting holes and removable mounting plugs for easy direct mounting to various junction boxes or walls. The optical components, including a polycarbonate lens and a faceplate, are mounted at the bottom of the lamp body. Their optical design ensures that light only forms a Type IV light distribution downwards, achieving full cutoff. The sensor assembly, such as an infrared sensor, is mounted below the mounting box via a sensor mount and employs a modular design that allows for independent removal. Furthermore, ground-mounting accessories including adapters and light shields are provided to accommodate upward-facing installations.

[0017] Compared with the prior art, the present invention has the following significant advantages:

[0018] 1. Excellent light distribution performance and environmental friendliness: Through precise optical components, it achieves strict full-cut-off Type IV light distribution, effectively eliminating upward scattering light, significantly reducing light pollution and sky glow, easily meeting dark sky certification requirements, and suitable for areas with strict restrictions on ambient lighting.

[0019] 2. Highly Efficient Integrated Thermal Management: The innovative composite structure of "streamlined lamp body + through-type heat dissipation and drainage channel + internal heat sink" greatly increases the heat dissipation surface area while ensuring aesthetic appeal and structural strength. The through-type channel not only promotes air convection and optimizes passive heat dissipation, but also guides rainwater to drain away quickly, preventing water accumulation and improving the long-term reliability and luminous efficacy maintenance of the lamp in high-temperature and high-humidity environments.

[0020] 3. Superior modularity and maintainability: Core functional modules such as the driver and infrared sensor are all fixed with independent brackets, forming clear modular interfaces with the mounting box and lamp body. In particular, the sensor assembly can be quickly replaced on-site from the outside without disassembling the entire lamp or performing complex wiring, greatly reducing later maintenance costs and time.

[0021] 4. Excellent ease of installation and adaptability to various scenarios: The EPDM mounting plate on the back of the mounting box integrates universal mounting holes and removable plugs, ensuring a tight seal with the wall and providing excellent installation compatibility. It can be directly adapted to standard junction boxes, simplifying the installation process. With optional ground mounting accessories (adapters and light shields), the luminaire can be quickly converted to a ground-projecting installation mode, expanding the product's application scenarios (such as building facade lighting). At the same time, the light shield can effectively control glare.

[0022] 5. Compact and Reliable Overall Structure: The socket design of the lamp body and mounting box, combined with a reasonable internal cavity layout, makes the overall structure very compact, and the thickness is strictly controlled (e.g., not exceeding 4 inches), complying with accessibility design standards such as ADA. At the same time, multiple seals (such as mounting plate, EPDM gasket, and faceplate) ensure a high IP66 protection rating, suitable for various harsh outdoor environments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained from these drawings without any creative effort.

[0024] Figure 1This is a three-dimensional structural diagram of an embodiment of the outdoor floodlight provided by this utility model, mainly showing the appearance of the front side of the lamp and the shape of the streamlined lamp body and heat dissipation groove.

[0025] Figure 2 yes Figure 1 The diagram shows a three-dimensional structure of the outdoor floodlight from another direction, mainly illustrating the structure on the back side of the luminaire, including the mounting box, mounting plate (EPDM gasket), aluminum plug, and the mounting position of the infrared sensor.

[0026] Figure 3 yes Figure 2 The diagram shows the internal structure of the structure after the mounting plate and part of the mounting box wall are hidden. It mainly shows the layout of the driver, switch assembly and its bracket in the cavity formed by the mounting box and the lamp body, as well as the heat sink structure in the back cavity of the lamp body.

[0027] Figure 4 This is a bottom side view of an embodiment of the outdoor floodlight provided by this utility model, mainly showing the layout relationship of the cover, lens and infrared sensor from the bottom. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0029] Please see Figures 1 to 4 This utility model provides a fully cut-off outdoor floodlight, which aims to provide a miniaturized outdoor lighting solution that meets dark sky standards, has high heat dissipation efficiency, is easy to maintain, and is flexible in installation.

[0030] The core structure of this floodlight consists of two main parts: the lamp body 10 and the mounting box 20, which are assembled in a detachable manner. For example... Figure 1 and Figure 2 As shown, the lamp body 10, serving as the main exterior carrier and optical cavity of the lamp, features a smooth curved surface design on its front outer surface, which is not only aesthetically pleasing but also effectively guides airflow and rainwater. Multiple heat dissipation and drainage channels 12 are provided running through the top and bottom of the lamp body 10. These channels are not merely decorative; they serve multiple functions: First, they significantly increase the heat dissipation surface area of ​​the lamp body 10, efficiently removing heat generated by the LED light source and driver 60 inside the lamp body by promoting natural air convection. Second, the unique through-type design allows rainwater falling on the top surface of the lamp to flow quickly downwards and drain away along the channels, effectively preventing rainwater accumulation on the lamp surface or in structural gaps, improving the reliability of waterproof sealing, and preventing water accumulation from affecting heat dissipation and appearance.

[0031] like Figure 3 As shown, the back of the lamp body 10 is designed with an inwardly recessed hollow cavity. This cavity is not a simple container; its inner wall is integrally formed with multiple longitudinally arranged heat sinks 13 between it and the bottom surface of the lamp. These heat sinks 13 further expand the effective heat dissipation area on the back of the lamp body 10, and together with the heat dissipation drainage grooves 12 on the surface, they form a three-dimensional passive heat dissipation system. This ensures that even in a compact space (such as when the overall thickness of the lamp is strictly controlled within 4 inches or approximately 102 millimeters to meet ADA accessibility design specifications), the junction temperature can be controlled within the allowable range, even when driving LED modules up to 40W (the actual power is usually 18W, 28W, or 38W optional), thereby ensuring that the LED light source meets the long life requirement of L70@50,000 hours.

[0032] The mounting box 20, serving as the electrical and control hub of the lamp, is securely connected to the lamp body 10 via multiple bolts 50 and metal washers 51. The bolted connection ensures structural stability, while the metal washers 51 help distribute the tightening force evenly and enhance the sealing and conductivity of the connection. Figure 2 As shown, aluminum plugs 21 are provided on both sides of the mounting box 20 to seal the cable entry holes or provide spare interfaces, maintaining the integrity of the housing and the IP66 protection rating. A groove is machined on the back of the mounting box 20, in which a mounting plate 80 is embedded. This mounting plate 80 is preferably made of EPDM (ethylene propylene diene monomer) material with excellent weather resistance. It not only serves as a seal to prevent moisture from entering from the back, but its core function is to act as a mounting base for the lamp. Figure 2 Combination Figure 3 The EPDM mounting plate 80 has multiple pre-drilled universal mounting holes 81, with a hole spacing design compatible with common standard electrical junction boxes. Each mounting hole 81 can be sealed with a matching removable mounting plug 82 when not in use, maintaining the protection level. This design allows installers to securely mount the luminaire directly to the wall or column without the need for additional adapter plates, greatly simplifying the installation process.

[0033] like Figure 3As shown, when the lamp body 10 is combined with the mounting box 20, the space between them forms a sealed, dry enclosure. All the electrical and control core components of the lamp are neatly arranged within this space. The driver 60 is suspended and fixed to the upper part of the enclosure via a dedicated driver bracket 61 and its fastening bolts. The driver 60 must have a wide voltage input (120-277VAC, ±10%), high power factor (≥90%), low total harmonic distortion (THD≤20%), low ripple current (≤20%), and surge protection of at least 4kV, providing stable, efficient, and long-life constant current drive for the LED light source. It also comes standard with a 0-10V analog dimming interface for seamless integration with building systems. On the side of the enclosure, the switch assembly 70 (which may include DIP switches for selecting power / color temperature, DIP switches for selecting light control modes, etc.) is fixed via the switch bracket 71. The adjustment window of the switch assembly 70 faces an aluminum plug 21 on the side wall of the mounting box 20. During on-site commissioning or maintenance, only this aluminum plug 21 needs to be opened to adjust the switch settings using a special tool. The entire process does not require opening the main cavity of the lamp or touching the internal cables, fully demonstrating the ease of maintenance and safety of the design.

[0034] The intelligent sensing function of the lamp is realized by the sensor component 40. For example... Figures 2 to 4 As shown, an infrared sensor 41 is mounted on the lower protruding part of the mounting box 20 via a dedicated sensor mount 42. This position provides a good detection field of view. Crucially, the infrared sensor 41 and its mount 42 constitute a separate, externally detachable module. If the sensor is damaged due to lightning strikes or other reasons, maintenance personnel can simply unscrew the fixing screws to remove the entire module and replace it with a new one. Wiring can utilize quick-connect connectors, achieving true "field replacement," significantly reducing after-sales maintenance costs and time. The infrared sensor 41 supports presence detection and can trigger the lamp to rapidly increase its brightness from a low-power standby state (e.g., 50% brightness) to 100% after detecting human activity, and then return to standby mode after an adjustable period (e.g., 15 minutes) after the person leaves, thus achieving intelligent energy saving.

[0035] The core optical output component of the luminaire, namely the optical assembly 30, is innovatively located at the bottom of the luminaire body 10. For example... Figure 4The bottom side view clearly shows that at the opening at the bottom of the lamp body 10, a lens 31 and a cover 32 are installed sequentially from the inside out. The cover 32 is usually made of impact-resistant engineering plastic or metal and is fixed by clips or screws. Its main function is to physically protect the internal precision optical components and to serve as the final decorative part. The lens 31 is closely attached to the inside of the cover 32. As the core secondary optical element, it is preferably made of polycarbonate (PC) material with high light transmittance and high UV resistance through precision injection molding. The optical surface of the lens 31 has been rigorously optimized by computer simulation and verified by field testing. Its core design goal is to achieve a "full cut-off" Type IV medium-long distance asymmetric light distribution. Specifically, the optical structure of the lens 31 redistributes all the light emitted by the LED chip, ensuring that the maximum intensity direction of the emitted light is strictly controlled downwards from the horizontal plane, and that no light can escape upwards into the space above 90° from the horizontal plane. This feature is the fundamental guarantee for meeting the certification requirements of the International Dark Sky Organization and minimizing light pollution and sky glow. According to the product specifications, the luminaires can provide high luminous flux output from 2800 lumens to 5500 lumens at different power levels, such as 18W, 28W, and 38W, with a system luminous efficacy of no less than 150 lumens / watt. Users can choose a color temperature of 3000K (specifically for Dark Sky certification applications), 4000K, or 5000K as needed. The color tolerance (SDCM) for all color temperature options is controlled at an excellent level of ≤5, and the color rendering index (CRI) is ≥80, ensuring accurate color reproduction and visual comfort of illuminated objects.

[0036] To further expand application scenarios, this utility model can also be designed with ground-mounting accessories. When the luminaire needs to be installed on the ground, low pillars, or platforms, and illuminates upwards to wash building facades, landmarks, or trees, a universal adapter (or "knuckle mount") can be used to connect to the standard interface at the bottom of the mounting box 20. This adapter allows the luminaire to be tilted at a certain angle after installation to precisely align with the target. At the same time, to avoid direct glare from the upward beam to pedestrians or vehicles at a distance, a dedicated visor must be installed. This visor is optically calculated to effectively cut off excess spill light beyond the target area, making the light spot outline clearer and more closely conforming to the illuminated surface. This is not only an optimization of optical performance but also reflects professional lighting etiquette and respect for the surrounding light environment.

[0037] In summary, the outdoor floodlight of this embodiment successfully solves the challenges of efficient heat dissipation and active waterproofing in an ultra-thin and compact structure through a composite thermal management system consisting of a streamlined lamp body, a through-type heat dissipation and drainage channel 12, and an internal heat sink 13. The modular design of the lamp body 10 and mounting box 20, the integrated EPDM mounting plate 80, and the independently replaceable infrared sensing module achieve unprecedented installation convenience and excellent on-site maintainability. The precisely designed and bottom-mounted full-cutoff lens 31 achieves superior light distribution performance and top-notch environmental friendliness. The optional universal adapter 91 and professional light shield 92 greatly enhance the product's adaptability to various scenarios, from walls to the ground. The entire luminaire integrates high performance, long lifespan, easy maintenance, and elegant appearance, fully verifying and realizing all the inventive objectives and beneficial effects pursued by this utility model.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model 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 utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A fully cutoff light distribution type outdoor floodlight, characterized in that, include: The lamp body (10) has a hollow cavity on its back; The mounting box (20) is detachably connected to the lamp body (10) and cooperates with the hollow cavity to form a closed accommodating space; An optical component (30) is disposed at the bottom of the lamp body (10) for achieving full cutoff light distribution; A sensor assembly (40) is disposed on the mounting box (20) for sensing the external environment or human activity.

2. The outdoor floodlight of Claim 1, wherein, The lamp body (10) is connected to the mounting box (20) by bolts (50), and a metal gasket (51) is provided at the connection.

3. The outdoor floodlight according to claim 1, characterized in that, The mounting box (20) has aluminum plugs (21) on both sides and a mounting plate (80) on its back.

4. The outdoor floodlight according to claim 3, characterized in that, The mounting plate (80) is made of EPDM material and is embedded in the groove on the back of the mounting box (20). It has multiple universal mounting holes (81) and removable mounting hole plugs (82) that cooperate with the mounting holes (81).

5. The outdoor flood lamp of claim 1, wherein, The accommodating space is provided with a driver (60) and a switch assembly (70). The driver (60) is fixed by a driver bracket (61), and the switch assembly (70) is fixed by a switch bracket (71).

6. The outdoor floodlight according to claim 1, characterized in that, The sensor assembly (40) includes an infrared sensor (41), which is mounted below the mounting box (20) via a sensor mount (42) and is a field-replaceable structure.

7. The outdoor floodlight according to claim 1, characterized in that, The outer surface of the lamp body (10) is streamlined and has multiple heat dissipation and drainage grooves (12) extending from its top surface to its bottom surface.

8. The outdoor floodlight according to claim 1 or 7, characterized in that, Multiple heat sinks (13) are provided between the back cavity and the bottom surface of the lamp body (10).

9. The outdoor flood lamp of claim 1, wherein, The optical component (30) includes a lens (31) and a faceplate (32). The lens (31) is made of polycarbonate material and is configured to allow light to be projected downwards only, thereby achieving a Type IV light distribution.

10. The outdoor flood lamp of claim 1, wherein, It also includes ground-mounting accessories, including adapters and light shields, suitable for ground-mounted scenarios where the lights are pointing upwards.

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