LED down lamp with high luminous flux

Abstract

The utility model provides an LED down lamp with high luminous flux. The LED down lamp comprises a supporting base, a lighting device is fixedly installed at the lower end of the supporting base, an installation device is fixedly installed on the outer surface of the lighting device, a reinforcing device is fixedly installed in the middle of the upper end of the supporting base in a penetrating mode, and an irradiation device is fixedly installed at the upper end of the supporting base in a penetrating mode. The lighting device comprises a bottom plate and a fixing base, a plurality of cooling fins are fixedly installed at the lower end of the bottom plate, and a fixing groove is formed in the middle of the upper end of the bottom plate. According to the LED down lamp with the high luminous flux, the total luminous flux is improved within a limited area through the six LED chips which are arranged on the COB light source in parallel, even and soft light spots can be generated through the inner wall of the optical reflection cup through an accurate parabola geometric structure in cooperation with secondary optical reflection, and then the light spots can be emitted through the total reflection lens. And the luminous flux of the LED down lamp is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of LED downlight technology, and in particular to a high luminous flux LED downlight. Background Technology

[0002] LED downlights are recessed ceiling-mounted lighting fixtures that project light downwards. They are directional lighting, meaning only the opposite surface receives light. The beam angle is focused, resulting in concentrated light and strong contrast between light and shadow. Utilizing this focusing property, they can emphasize key objects in residential or commercial spaces, achieving accent lighting or focal point lighting. Furthermore, LED downlights use solid-state LED light sources, boasting high energy efficiency, converting more electrical energy into visible light rather than heat. This results in significant advantages in energy consumption and electricity costs. They also do not contain harmful substances such as mercury, minimizing their environmental impact during use and disposal.

[0003] An existing patent (application number 201710132981.9) discloses a high-luminous-flux LED three-dimensional lamp. It includes at least one LED three-dimensional light emitter, a driver, a driver housing, and an electrical connector. The LED three-dimensional light emitter is mounted on the top cover of the driver housing. The LED three-dimensional light emitter, driver, driver housing, and electrical connector are interconnected to form a high-luminous-flux LED three-dimensional lamp. The LED three-dimensional light emitter includes a three-dimensional light-transmitting body and at least one closable groove on the three-dimensional light-transmitting body. At least one string of LED chips is fixed in each groove. The LED chips are interconnected via electrical connection wires in series, parallel, or series-parallel configurations. Pads are provided at both ends of the grooves. One pad connects one end of the electrical connection wire and an electrical lead wire, which is connected to an electrode lead. The other pad connects the other end of the electrical connection wire and another electrode lead wire. The electrode lead wire is connected to the output of the LED driver, and the input of the LED driver is connected to the electrical connector. The electrical connector is used to connect to an external power source. This invention has a long lifespan and is easy to disassemble and maintain.

[0004] The luminous flux of existing LED downlights still has certain problems. For example, insufficient heat dissipation causes the luminous efficacy of LED chips to decrease as the temperature rises. In addition, poor secondary optical design results in excessively strong central light spot and uneven edge illumination. Utility Model Content

[0005] Therefore, it is necessary to provide a high-luminous-flux LED downlight to address the technical problems of insufficient heat dissipation in LED downlights, which leads to a decrease in the luminous efficacy of LED chips as the temperature rises, and poor secondary optical design resulting in excessively strong central light spot and uneven edge illuminance.

[0006] A high-luminous-flux LED downlight includes a support base, a lighting device fixedly mounted on the lower end of the support base, an mounting device fixedly mounted on the outer surface of the lighting device, a reinforcing device fixedly mounted through the middle of the upper end of the support base, and an illumination device fixedly mounted through the upper end of the support base. The lighting device includes a base plate and a mounting seat. Several heat dissipation fins are fixedly mounted on the lower end of the base plate. A fixing groove is formed in the middle of the upper end of the base plate, and a wiring hole is formed in the middle of the lower inner wall of the fixing groove. A COB light source is fixedly mounted on the upper end of the mounting seat, and six LED chips are fixedly mounted on the upper end of the COB light source. The reinforcing device includes an optical reflector. A clamping groove is formed through the upper end of the support base, and the optical reflector is fixedly mounted inside the support base through the clamping groove. The illumination device includes a mounting ring with external threads engraved on its outer surface.

[0007] In one embodiment, the COB light source is fixedly mounted on the upper middle part of the base plate through a fixing groove, and the base plate is fixedly mounted on the lower end of the support base.

[0008] By integrating six high-density LED chips through a COB light source, the total luminous flux is increased within a limited area. Meanwhile, the supporting base, bottom plate, and heat dissipation fins are made of high-quality aluminum alloy. Aluminum alloy has low density but high strength, approaching or exceeding that of high-quality steel. It has good plasticity and can be processed into various profiles. It also has excellent electrical conductivity, thermal conductivity, and corrosion resistance, as well as low density, which enables the device to achieve a lightweight design while ensuring efficient heat dissipation.

[0009] In one embodiment, an mounting cylinder is fixedly installed on the upper part of the outer surface of the support base, and the inner wall of the mounting cylinder has internal threads.

[0010] The total internal reflection lens is screwed into the mounting cylinder by a mounting ring, and the design of the two rotating handles on the mounting ring makes it easy to rotate, thus facilitating the installation or removal of the total internal reflection lens.

[0011] In one embodiment, a rotating handle is fixedly installed on the upper left and upper right sides of the mounting ring, a total reflection lens is inserted and fixedly installed on the upper end of the mounting ring, and the mounting ring is screwed into the mounting cylinder by external threads.

[0012] When light passes through a total internal reflection lens, the lens is usually designed as a tapered light-transmitting body that is wider at the top and narrower at the bottom. It has a through hole in its central axis, and the upper end of the through hole is connected to an outwardly expanding tapered hole. The through hole can serve as the light-incident mirror, while the outwardly expanding tapered hole can serve as the light-outceasing mirror. A groove is provided at the outwardly expanding tapered hole to guide the light to the side, thereby increasing the light-gathering effect, luminous intensity, and uniformity of the illuminated area. This design makes the light travel more efficiently within the prism.

[0013] In one embodiment, the mounting device includes a mounting base with a mounting groove in the middle of its upper end. The mounting base is fixedly mounted on the lower end of a support base, and mounting threads are engraved on the outer surface of the mounting base.

[0014] When installing LED downlights, pre-cut the corresponding threaded grooves at the reserved installation locations. Then, simply screw the mounting base into the threaded grooves to quickly install the device.

[0015] In one embodiment, a plurality of heat dissipation fins are arranged in a ring array at the lower end of the base plate, and the heat dissipation fins and the base plate are an integral design.

[0016] In one embodiment, the support base, base plate, and heat dissipation fins are made of aluminum alloy.

[0017] In one embodiment, the inner wall of the optical reflector cup is designed with a parabolic curved surface.

[0018] In one embodiment, the two rotating handles are symmetrically distributed about the center of the total reflection lens.

[0019] In one embodiment, the mounting base is circular in shape.

[0020] The aforementioned high-luminous-flux LED downlight utilizes six parallel-designed LED chips on a COB light source to increase the total luminous flux within a limited area. Simultaneously, by enhancing the design of the optical reflector on the device, the inner wall of the reflector, through a precise parabolic geometry, places the LED light source at the focal point, causing the light to form a parallel beam after reflection, reducing scattering loss. Combined with secondary optical reflection, this generates a uniform and soft light spot, eliminating defects such as yellow rings and black holes, resulting in a perfect light spot. Furthermore, when light passes through the total internal reflection lens on the illumination device, the lens is typically designed as a tapered light-transmitting body, wider at the top and narrower at the bottom, with a through-hole in its central axis. The upper end of this through-hole connects to an outwardly expanding tapered hole. The through-hole serves as the incident light mirror, while the outwardly expanding tapered hole serves as the exit light mirror. A groove is provided at the outwardly expanding tapered hole. By guiding light to the side, the light-gathering effect, luminous intensity, and uniformity of the illuminated area are increased. This design makes the light travel more efficiently within the prism. The multiple design features of the device effectively improve the luminous flux of the LED downlight. In addition, the total internal reflection lens is screwed into the mounting cylinder by a mounting ring, and the two rotating handles on the mounting ring facilitate its rotation, making it easy to install or remove the total internal reflection lens. Meanwhile, the support base, base plate, and heat dissipation fins are made of high-quality aluminum alloy. Aluminum alloy has a low density but high strength, approaching or exceeding that of high-quality steel. It has good plasticity and can be processed into various profiles. It also has excellent electrical conductivity, thermal conductivity, and corrosion resistance, and its low density allows the device to achieve a lightweight design while ensuring efficient heat dissipation, thereby improving the practicality of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high luminous flux LED downlight according to the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of a high luminous flux LED downlight lighting device according to the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of a high luminous flux LED downlight enhancement device according to the present invention;

[0024] Figure 4 This is a schematic diagram of the overall structure of the illumination device for a high luminous flux LED downlight according to this utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the installation device for a high luminous flux LED downlight according to this utility model. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Please refer to the following: Figures 1 to 5 This utility model provides a high luminous flux LED downlight, including a support base 1, a lighting device 2 fixedly installed at the lower end of the support base 1, an installation device 5 fixedly installed on the outer surface of the lighting device 2, a reinforcing device 3 fixedly installed through the middle of the upper end of the support base 1, and an illumination device 4 fixedly installed through the upper end of the support base 1; the lighting device 2 includes a base plate 20 and a fixing seat 21, a plurality of heat dissipation fins 24 fixedly installed at the lower end of the base plate 20, a fixing groove 22 is opened in the middle of the upper end of the base plate 20, a wiring hole 23 is opened in the middle of the lower inner wall of the fixing groove 22, a COB light source 25 is fixedly installed at the upper end of the fixing seat 21, and six LED chips 26 are fixedly installed at the upper end of the COB light source 25; the reinforcing device 3 includes an optical reflector 30, a clamping groove 31 is opened through the upper end of the support base 1, and the optical reflector 30 is fixedly installed in the support base 1 through the clamping groove 31; the illumination device 4 includes a mounting ring 40, and an external thread 41 is engraved on the outer surface of the mounting ring 40.

[0032] COB light source 25 is fixedly installed in the middle of the upper part of base plate 20 through fixing slot 22. Base plate 20 is fixedly installed in the lower part of support base 1. Several heat dissipation fins 24 are distributed in a ring array in the lower part of base plate 20, and heat dissipation fins 24 and base plate 20 are integrated. Support base 1, base plate 20 and heat dissipation fins 24 are made of aluminum alloy.

[0033] The COB light source 25 integrates six high-density arranged LED chips 26, thereby increasing the total luminous flux within a limited area. Meanwhile, the supporting base 1, base plate 20 and heat dissipation fins 24 are made of high-quality aluminum alloy. Aluminum alloy has low density but high strength, which is close to or exceeds that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance, and also has low density, which enables the device to achieve a lightweight design while ensuring efficient heat dissipation.

[0034] An mounting cylinder 32 is fixedly installed on the upper part of the outer surface of the support base 1, and an internal thread 33 is opened on the inner wall of the mounting cylinder 32; the inner wall of the optical reflector cup 30 is designed with a parabolic curved surface.

[0035] The total reflection lens 43 is screwed into the mounting cylinder 32 by the mounting ring 40 on it. The design of the two rotating handles 42 on the mounting ring 40 also facilitates its rotation, thereby making it convenient to install or remove the total reflection lens 43. The two rotating handles 42 are symmetrically distributed on the left and right sides with the total reflection lens 43 as the center.

[0036] Rotating handles 42 are fixedly installed on the upper left and upper right sides of the mounting ring 40. A total reflection lens 43 is inserted and fixedly installed on the upper end of the mounting ring 40. The mounting ring 40 is screwed into the mounting cylinder 32 through the external thread 41.

[0037] When light passes through the total internal reflection lens 43, the total internal reflection lens 43 is usually designed as a tapered light-transmitting body that is wider at the top and narrower at the bottom. It has a through hole in its central axis. The upper end of the through hole is connected to the outwardly expanding tapered hole. The through hole can serve as the light-incident mirror, while the outwardly expanding tapered hole can serve as the light-outceasing mirror. A groove is provided at the outwardly expanding tapered hole to guide the light to the side, thereby increasing the light-gathering effect, light intensity and uniformity of the illuminated area. This design makes the light travel more efficiently within the prism.

[0038] The mounting device 5 includes a mounting base 50, with a mounting groove 51 in the middle of the upper end of the mounting base 50. The mounting base 50 is fixedly mounted on the lower end of the support base 1. The outer surface of the mounting base 50 is engraved with mounting threads 52. The mounting base 50 is circular in shape.

[0039] When installing LED downlights, pre-cut the corresponding threaded grooves at the reserved installation locations. Then, simply screw the mounting base 50 into the threaded grooves to quickly install the device.

[0040] This invention provides a high-luminous-flux LED downlight. It integrates six high-density arranged LED chips 26 using a COB light source 25, thereby increasing the total luminous flux within a limited area. Simultaneously, through the design of the optical reflector 30 on the strengthening device 3, the inner wall of the optical reflector 30, with its precise parabolic geometry, places the LED light source at the focal point, allowing the light to form a parallel beam after reflection, reducing scattering loss. Combined with secondary optical reflection, it can generate a uniform and soft light spot, eliminating defects such as yellow rings and black holes, resulting in a perfect light spot. Furthermore, when light passes through the total internal reflection lens 43 on the irradiation device 4, the total internal reflection lens 43 is typically designed as a tapered light-transmitting body, wider at the top and narrower at the bottom, with a through-hole in its central axis. The upper end of this through-hole connects to an outwardly expanding tapered hole. The through-hole serves as the incident light mirror, while the outwardly expanding tapered hole serves as the emitting light mirror. A groove is provided at the conical hole to guide the light to the side, increasing the focusing effect, luminous intensity and uniformity of the illuminated area. This design makes the light travel more efficiently within the prism. The multiple designs of the device effectively improve the luminous flux of the LED downlight. At the same time, the supporting base 1, the base plate 20 and the heat dissipation fins 24 are made of high-quality aluminum alloy. Aluminum alloy has low density but high strength, close to or exceeding that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance, and also has low density, which enables the device to achieve lightweight design while ensuring efficient heat dissipation. Moreover, the total reflection lens 43 is screwed into the mounting cylinder 32 by the mounting ring 40. The design of the two rotating handles 42 on the mounting ring 40 also makes it easy to rotate, thereby facilitating the installation or removal of the total reflection lens 43.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high luminous flux LED downlight, comprising a support base, characterized in that: A lighting device is fixedly installed at the lower end of the support base, and an installation device is fixedly installed on the outer surface of the lighting device. A reinforcing device is fixedly installed through the middle of the upper end of the support base, and an illumination device is fixedly installed through the upper end of the support base. The lighting device includes a base plate and a fixing seat. Several heat dissipation fins are fixedly installed at the lower end of the base plate. A fixing groove is opened in the middle of the upper end of the base plate. A wiring hole is opened in the middle of the lower inner wall of the fixing groove. A COB light source is fixedly installed at the upper end of the fixing seat, and six LED chips are fixedly installed at the upper end of the COB light source. The reinforcing device includes an optical reflector. A clamping groove is opened through the upper end of the support base, and the optical reflector is fixedly installed inside the support base through the clamping groove. The illumination device includes a mounting ring, and an external thread is engraved on the outer surface of the mounting ring.

2. The high luminous flux LED downlight according to claim 1, characterized in that, The COB light source is fixedly installed on the upper middle part of the base plate through a fixing slot, and the base plate is fixedly installed on the lower end of the support base.

3. The high luminous flux LED downlight according to claim 1, characterized in that, An mounting cylinder is fixedly installed on the upper part of the outer surface of the support base, and the inner wall of the mounting cylinder has internal threads.

4. The high luminous flux LED downlight according to claim 1, characterized in that, Rotating handles are fixedly installed on the upper left and upper right sides of the mounting ring. A total reflection lens is inserted and fixedly installed on the upper end of the mounting ring. The mounting ring is screwed into the mounting cylinder by external threads.

5. A high luminous flux LED downlight according to claim 1, characterized in that, The mounting device includes a mounting base with a mounting groove in the middle of its upper end. The mounting base is fixedly mounted on the lower end of the support base, and mounting threads are engraved on the outer surface of the mounting base.

6. A high luminous flux LED downlight according to claim 2, characterized in that, Several heat dissipation fins are arranged in a ring array at the lower end of the base plate, and the heat dissipation fins and the base plate are integrated into one piece.

7. A high luminous flux LED downlight according to claim 2, characterized in that, The support base, base plate, and heat dissipation fins are made of aluminum alloy.

8. A high luminous flux LED downlight according to claim 3, characterized in that, The inner wall of the optical reflector cup is designed with a parabolic curved surface.

9. A high luminous flux LED downlight according to claim 4, characterized in that, The two rotating handles are symmetrically distributed on the left and right sides with the total internal reflection lens as the center.

10. A high luminous flux LED downlight according to claim 5, characterized in that, The mounting base is circular in shape.

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