WO2019144613A1

WO2019144613A1 - Led down lamp

Info

Publication number: WO2019144613A1
Application number: PCT/CN2018/102479
Authority: WO
Inventors: 李廷宏; 谭宇清; 梁兆荣
Original assignee: 怡迅（珠海）光电科技有限公司
Priority date: 2018-01-29
Filing date: 2018-08-27
Publication date: 2019-08-01
Also published as: CN207921965U

Abstract

An LED down lamp, comprising: an LED light source (101), a focusing lens (301), a heat radiator cover (102), and a hollow reflector cup (103). The focusing lens (301) is fastened below the LED light source (101) by means of a support (302); the outer wall of the reflector cup (103) is provided with a multi-stage step structure from top to bottom; the reflector cup (103) is built in a cavity of the heat radiator cover (102); the LED light source (101) is fixed at the top inside the heat radiator cover (102), and is located above the reflector cup (103). The focusing lens fastened below the LED light source by means of the support can collect scattered light emitted from the LED light source as direct light, so that more light from the LED light source is scattered onto the outer wall of the reflector cup, and further scatted and reflected by the multi-stage step structure provided on the outer wall of the reflector cup. Therefore, the problem of glaring of an LED down lamp is improved without increasing the volume of the LED down lamp.

Description

LED downlight

Related application

The present application claims priority to Chinese Patent Application No. 20182015451, filed on Jan.

Technical field

The present application relates to the field of lamps, and in particular to an LED downlight.

Background technique

With the continuous development of Light-Emitting Diode (LED) technology, LED downlights have become the increasingly popular LED lighting manufacturers due to their advantages of energy saving, low carbon, longevity, good color rendering and fast response. The pursuit of mass production goals.

Since the LED light source in the LED downlight emits high-intensity light, it often causes obvious glare problems, which makes people feel glare. In order to solve the problem of glare in LED downlights, LED downlights are made into a large-sized deep-tube LED downlight in the conventional technology to avoid the above glare problem.

However, the deep tube design in the conventional technology increases the volume of the LED downlight, thereby causing the LED downlight to be bulky, and the improvement effect on the glare problem of the LED downlight is poor.

Summary of the invention

Based on this, it is necessary to provide an LED downlight for the problem that the improvement effect is poor and the volume is large in solving the glare problem of the LED downlight in the conventional technology.

The present application provides an LED downlight, comprising: an LED light source, a focusing lens, a heat dissipation cover, and a hollow reflective cup, wherein the focusing lens is fastened under the LED light source through a bracket, and the outer wall of the reflective cup is from above a multi-stage step structure, the reflector cup is built in a cavity of the heat dissipation cover;

The LED light source is fixed on a top surface of the heat dissipation cover and located above the reflective cup.

In one of the embodiments, the focusing lens is a Fresnel lens.

In one embodiment, the outer wall of the reflector forms a cavity with the inner wall of the heat sink, and the power module of the LED downlight is disposed in the cavity and fixed to the outer wall of the reflector. connection.

In one embodiment, the bottom of the power module is provided with a protrusion, and an outer wall of the reflector is provided with a groove matching the protrusion, and the power module passes the protrusion and the groove Buckle

On the outer wall of the reflector.

In one embodiment, the reflector is a truncated cone structure having a plurality of annular steps on the outer wall of the truncated cone structure.

In one embodiment, the LED downlight further includes: a terminal assembly including a male terminal and a female terminal;

One end of the male terminal is inserted into the through hole of the top of the heat dissipation cover, and is connected to the power module of the heat dissipation cover, and the other end of the male terminal is connected to the LED lamp head through the female terminal.

In one embodiment, the LED lamp cap is a screw cap or a snap cap.

In one embodiment, the heat shield includes a hemispherical cover and an annular extension disposed at a bottom of the cover.

In one of the embodiments, the outer wall of the cover is fixed with at least one mounting bracket.

In one embodiment, the outer wall of the cover body is provided with a mounting seat, and the mounting seat is

The mounting structure is fixed on an outer wall of the cover, and the mounting bracket is fixed to a bottom end of the mounting seat.

The LED downlight provided by the present application is fastened by a bracket to a focusing lens below the LED light source, and the focusing lens can collect the scattered light from the LED light source and collect it as direct light through the focusing lens, thereby making the light source from the LED light source more A large amount of light is scattered on the outer wall of the reflector, and then through the scattering and refraction of the multi-step structure on the outer wall of the reflector, the glare of the LED downlight can be greatly improved without increasing the volume of the LED downlight. The improvement effect has been further improved.

DRAWINGS

1 is a schematic structural view of an LED downlight provided by an embodiment;

1A is a three-dimensional schematic view of a reflector provided by another embodiment;

1B is a three-dimensional schematic view of a reflector provided by another embodiment;

2 is a schematic structural view of an LED downlight provided by another embodiment;

3 is a schematic structural view of an LED downlight provided by another embodiment;

3A is a perspective structural view of an LED downlight provided by another embodiment;

FIG. 3B is a schematic exploded view of the structure of the LED downlight provided by another embodiment. FIG.

Description of the reference signs:

101: LED light source; 102: heat sink cover; 103: reflector cup;

201: power module; 211: raised; 212: groove;

202: cavity; 301: focusing lens; 302: bracket;

401: terminal; 411: male terminal; 412: female terminal;

402: LED lamp cap; 121: cover body; 122: extension portion;

403: mounting bracket; 404: mount; 405: hole;

406: assembly part; 407: screw.

Detailed ways

With the continuous development of lighting technology, the application of LED downlights is more and more extensive. LED downlights are products developed on the basis of traditional downlights using new LED lighting sources. The design of LED downlights is more beautiful and light. It is often used for lighting in hotels, hotels, living rooms, home theaters, museums, conference rooms, multi-purpose halls, etc.

In the LED downlight, the LED light source is a high-intensity point light source, and the light emitted by the LED light source is easy to produce glare, which makes people feel glare. In order to solve the glare problem, the LED downlight is made into a deep tube type in the conventional technology. LED downlights to avoid the above glare problems.

The embodiment of the present application aims to solve the problem that the improvement effect is poor when the glare problem is solved in the conventional technology.

The technical solutions in the embodiments of the present application are further described in detail in the following embodiments and in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

FIG. 1 is a schematic structural view of an LED downlight provided by an embodiment. As shown in FIG. 1 , the LED downlight includes: an LED light source 101 , a focus lens 301 , a heat dissipation cover 102 , and a hollow reflector cup 103 . The focus lens 301 is fastened under the LED light source 101 by a bracket 302 . The outer wall of the reflector cup 103 has a multi-step structure from top to bottom. The reflector cup 103 is built in the cavity 202 of the heat dissipation cover 102; the LED light source 101 is fixed on the top surface of the heat dissipation cover 102. And located above the reflector cup 103. Optionally, the focusing lens 301 is a Fresnel lens. Optionally, the reflector cup 103 may be a truncated cone structure, and the outer wall of the truncated cone structure has an annular step.

Specifically, in the embodiment, the heat dissipation cover 102 may be an outer casing made of aluminum, or may be a casing made of die-cast aluminum, or may be a casing made of plastic; the material of the focusing lens 301 may be a plastic material or a glass. Material; the material of the reflector cup 103 may be polycarbonate (Polycarbonate, PC), poly butylene terephthalate (PBT), or acrylonitrile, butadiene and styrene copolymer (Acrylonitrile- Butadiene-styrene (ABS), the material of the reflector cup 103 is not limited in this embodiment, as long as the outer wall of the reflector cup 103 has a multi-step structure from top to bottom.

Optionally, the shape of the heat dissipation cover 102 may be a columnar heat dissipation cover, a hemispherical column heat dissipation cover, or a cylindrical heat dissipation cover. It should be noted that, in this embodiment, the shape of the heat dissipation cover 102 is not limited, and the shape of the heat dissipation cover 102 can be selected and manufactured according to actual needs.

In this embodiment, the focus lens 301 may be a Fresnel lens or other lens capable of focusing light. Optionally, the focusing lens 301 is a refractor, the refractive surface of which is two spherical surfaces, or a spherical transparent body. The focusing lens 301 can illuminate the light emitted from the LED light source 101 through the focusing lens 301. It is refracted to the outer wall of the reflector cup 103, and the focusing lens 301 has a strong concentrating ability, and the scattered light emitted by the LED light source 101 can be collected into direct light by the action of condensing, so that the LED light source 101 can be emitted. The light is collected on the outer wall of the reflector cup 103, and is scattered and refracted by the multi-step structure on the outer wall of the reflector cup 103, so that the glare problem of the LED downlight can be greatly improved without increasing the volume of the LED downlight. When the focus lens 301 is a Fresnel lens, the light is better concentrated on the outer wall of the reflector cup 103 based on the special optical principle of the Fresnel lens. From its cross section, the Fresnel lens has a series of zigzag groove structures on its surface, and the central part is an elliptical arc. Each groove can be used as a separate lenslet to adjust the light. Therefore, according to the Fresnel lens, the scattered light emitted from the LED light source 101 can be converted into direct light and focused on the outer wall of the reflector cup 103.

Optionally, the bracket 302 may be a chip on board (COB) bracket, a Cree bracket, or a light source fixing bracket. In this embodiment, the type of the bracket 302 is not limited, as long as The holder 302 can be used to fasten the focus lens 301 and the LED light source 101 together. It should be noted that the manner in which the focus lens 301 and the LED light source 101 are connected is not limited in this embodiment.

Alternatively, the reflector cup 103 may be a truncated cone structure, such as the three-dimensional schematic view shown in FIG. 1A. The reflector cup 103 can also be a tower-like structure, for example, see the three-dimensional schematic diagram shown in FIG. 1B. Other shapes may be used as long as the outer wall of the reflector cup 103 has a step of diffusing light and refracting light. When the step on the outer wall of the reflector cup 103 is viewed from a plan view, it may be a circular ring shape, a square ring shape, or a rhombic ring shape. The shape of the step is not limited in this embodiment.

In this embodiment, the LED downlight comprises: an LED light source, a heat dissipation cover, a hollow reflective cup, a power module, and a focusing lens fastened under the LED light source through the bracket, the focusing lens can transmit the scattered light from the LED light source Collecting light through the focusing lens, so that more light from the LED light source is scattered onto the outer wall of the reflector, and then through the scattering and refraction of the multi-step structure on the outer wall of the reflector, thereby not increasing In the case of the LED downlight volume, the glare problem of the LED downlight is greatly improved, and the improvement effect is further improved.

2 is a schematic structural view of an LED downlight provided by another embodiment. On the basis of the embodiment shown in FIG. 1 , optionally, the outer wall of the reflector 100 and the inner wall of the heat dissipation cover 102 form a cavity 202, and the power module 201 of the LED downlight is disposed in the cavity. 202 is fixedly connected to the outer wall of the reflector cup 103. Optionally, the bottom of the power module 201 is provided with a protrusion 211, and an outer wall of the reflector cup 103 is provided with a groove 212 matching the protrusion 211, and the power module 201 passes through the protrusion 211 and The groove 212 is snapped onto the outer wall of the reflector cup 103. It should be noted that the position of the protrusion 211 and the groove 212 is not limited in this embodiment. The protrusion 211 may be disposed at the bottom of the power module 201 or may be disposed on the outer wall of the reflector 103. The groove 212 may be disposed. At the bottom of the power module 201, it may also be disposed on the outer wall of the reflector 100, as long as the protrusion 211 and the recess 212 can securely connect the power module 201 and the reflector 103. The projections 211 provided at the bottom of the power module 201 in Fig. 2 and the outer wall of the reflector cup 103 are provided with grooves 212 matching the projections 211, which is merely an example.

Specifically, in this embodiment, each of the LED downlights has a power module 201. The power module 201 can be located at any position in the cavity 201 formed by the outer wall of the reflector 100 and the inner wall of the heat shield 102. 201 provides the required electrical energy for all electrical components in the LED downlight. The power module 201 may be soldered to the outer wall of the reflector 103, or may be connected to the outer wall of the reflector 103 by bolts, or may be connected to the outer wall of the reflector 103 by rivets.

Optionally, the protrusion 211 disposed at the bottom of the power module 201 may be a triangular pyramid-shaped protrusion or a columnar protrusion, or may be a square-shaped protrusion, and the outer wall of the reflector cup 103 is concave. The groove 212 may be a groove of a strip shape, or may be a groove of a cylindrical shape, or may be a groove of a square block, as long as the protrusion 211 provided at the bottom of the power module 201 and the outer wall of the reflector 103 are disposed. The groove 212 can be matched.

In this embodiment, the LED downlight includes: an LED light source, a focusing lens, a heat dissipation cover, a hollow reflective cup, and a power module. The power module is disposed in the cavity formed by the heat dissipation cover and the reflector, and is fixedly connected to the outer wall of the reflector. The power module is a built-in power supply that can be used directly as a power supply for the LED downlights to ensure proper operation of the LED downlights. According to the LED downlight provided by the embodiment, the glare problem of the LED downlight can be solved without increasing the volume of the LED downlight, and the improvement effect is better.

FIG. 3 is a schematic structural diagram of an LED downlight provided by another embodiment. Based on the embodiment shown in FIG. 2, the LED downlight further includes: a terminal 401 assembly, the terminal 401 assembly includes a male terminal 411 and a female terminal 412; one end of the male terminal 411 is inserted in the heat dissipation The through hole at the top of the cover 102 is connected to the power module 201 of the heat shield 102, and the other end of the male terminal 411 is connected to the LED base 402 via the female terminal 412. Optionally, the LED lamp head 402 is a screw base or a buckle base.

Specifically, the terminal 401 may be a plug-in type terminal, a spring-type terminal, or a rail-type terminal. The type of the terminal 401 is not limited in this embodiment. The terminal 401 includes a male terminal 411 and a female terminal 412. The male terminal 411 can be a “205 model” male terminal, a “110 model” male terminal, or a “187 model” male terminal, and the female terminal 412 can be It is a "205 model" female terminal, and may also be a "110 model" female terminal, or a "187 model" female terminal. In this embodiment, the types of the male terminal 411 and the female terminal 412 are not limited, as long as the male terminal 411 and The female terminals 412 can be matched to each other. The male terminal 411 is coupled to the power module 201 through an electronic wire. The male terminal 411 is riveted to one end of the electronic wire, and the other end of the electronic wire is soldered to the power module 201. The female terminal 412 is also coupled to the LED lamp head 402 through an electronic wire. The female terminal 412 is riveted to one end of the electronic wire, and the other end of the electronic wire is riveted to the LED base 402, and then the female terminal 412 is inserted into the male terminal 411.

Optionally, the LED lamp head 402 can be an E26 spiral lamp cap or an E26 snap lamp cap, or an E27 cap spiral lamp cap or an E27 snap cap. The LED lamp cap 402 is not limited in this embodiment, and the LED cap 402 is not limited. You can choose according to the actual required standards.

In this embodiment, the LED downlight includes: an LED light source, a heat dissipation cover, a hollow reflector, a power module, a focus lens, and an LED lamp head connected through the terminal structure. Based on the structure of the LED downlight, the glare problem of the LED downlight is solved without increasing the volume of the LED downlight, and the improvement effect is better, and in the embodiment, the LED lamp head is connected to the power module through the terminal structure. Therefore, the assembly of the LED downlight luminaire is easy to realize automatic assembly, thereby improving the production efficiency of the LED downlight.

Continuing to refer to the three-dimensional structural diagram of the LED downlight provided by another embodiment of FIG. 3 and FIG. 3A above, optionally, the heat dissipation cover 102 includes a hemispherical cover 121 and a bottom portion of the cover 121. Annular extension 122. At least one mounting bracket 403 is fixed to the outer wall of the cover 121. The outer wall of the cover body 121 is provided with a mounting seat 404, and the mounting seat 404 is

The mounting seat 404 is fixed to the outer wall of the cover body 121, and the mounting bracket 403 is fixed to the bottom end of the mounting seat 404.

Specifically, the cover body 121 may have a columnar shape, a hemispherical column shape, or a columnar shape. The shape of the extension portion 122 in plan view may be a circular ring shape or a square ring shape. It may also be a diamond-shaped ring shape, and the shape of the cover body 121 and the extension portion 122 is not limited in this embodiment. The mounting bracket 403 may be a spring-type mounting bracket, a telescopic mounting bracket, or a fixed-type mounting bracket. The above mount 404 can be

The structure may be other types of structures, as long as the mounting seat 404 can be fixed on the outer wall of the cover 121 and the mounting bracket 403 can be fixed to the bottom end of the mounting seat 404. The structure of the mounting bracket 403 is not limited, and the manner of connecting the mounting bracket 404 and the mounting bracket 403 is not limited. The shape and connection manner of the mounting bracket 404 and the mounting bracket 403 in FIG. 3A are only an example.

Further, in this embodiment, as shown in FIG. 3A, the LED light source 101 is fixed on the top surface of the heat dissipation cover 102, which is exactly the position of the hole 405 in FIG. 3A, and the hole 405 is located at the center of the heat dissipation cover 105, thereby The light emitted by the LED light source 101 is uniformly scattered on the outer wall of the reflector cup 103, and the scattering and refraction of the multi-step step on the reflector cup 103 can greatly improve the LED tube without increasing the volume of the LED downlight. The glare of the lamp.

Continuing to refer to FIG. 3 and FIG. 3A above, FIG. 3B is a schematic exploded view of the structure of the LED downlight provided by another embodiment. As shown in FIG. 3B, the mounting member 406 on the reflector cup 103 may have a cylindrical shape, a conical shape, or a strip shape, and the assembly member 406 may be used to fix the power module. 201, or used to fix the reflector cup 103 and the heat sink cover 102 by screws 407.

The LED downlight provided in this embodiment includes an LED light source, a heat dissipation cover, a hollow reflector cup, a power module, a focus lens, an LED lamp head, and a terminal. First, the scattered light from the LED light source is converted into direct light by the focusing lens, so that more light from the LED light source is scattered onto the outer wall of the reflector, and then scattered by the multi-step structure on the outer wall of the reflector. And refraction, so that the glare problem of the LED downlight can be greatly improved without increasing the volume of the LED downlight, and the improvement effect is further improved. Through the terminal structure provided by the embodiment, the terminal connects the LED lamp head and the power module, thereby making the assembly of the LED downlight easy to realize automatic assembly, thereby improving the production efficiency of the LED downlight.

The above-mentioned embodiments are merely illustrative of several embodiments of the present application, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the claims. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the present application. Therefore, the scope of the invention should be determined by the appended claims.

Claims

An LED downlight, comprising: an LED light source, a focusing lens, a heat dissipation cover and a hollow reflective cup, wherein the focusing lens is fastened under the LED light source by a bracket, and the outer wall of the reflective cup is from above a multi-stage step structure, the reflector cup is built in a cavity of the heat dissipation cover;

The LED light source is fixed on a top surface of the heat dissipation cover and located above the reflective cup.
The LED downlight according to claim 1, wherein the focus lens is a Fresnel lens.
The LED downlight according to claim 1, wherein an outer wall of the reflector has a cavity formed with an inner wall of the heat dissipation cover, and a power module of the LED downlight is disposed in the cavity, and It is fixedly connected to the outer wall of the reflector.
The LED downlight according to claim 3, wherein the bottom of the power module is provided with a protrusion, and an outer wall of the reflector is provided with a groove matching the protrusion, and the power module passes through the The projection and the groove are snapped onto the outer wall of the reflector.
The LED downlight according to claim 1, wherein the reflector is a truncated cone structure, and the outer wall of the truncated cone structure has a plurality of annular steps.
The LED downlight according to claim 5, wherein the LED downlight further comprises: a terminal assembly, the terminal assembly comprising a male terminal and a female terminal;

One end of the male terminal is inserted into the through hole of the top of the heat dissipation cover, and is connected to the power module of the heat dissipation cover, and the other end of the male terminal is connected to the LED lamp head through the female terminal.
The LED downlight according to claim 6, wherein the LED lamp head is a screw base or a buckle base.
The LED downlight of claim 5 wherein said heat sink cover comprises a hemispherical cover and an annular extension disposed at the bottom of said cover.
The LED downlight according to claim 8, wherein the outer wall of the cover is fixed with at least one mounting bracket.
The LED downlight according to claim 9, wherein the outer wall of the cover body is provided with a mounting seat, and the mounting seat is
The mounting structure is fixed on an outer wall of the cover, and the mounting bracket is fixed to a bottom end of the mounting seat.