WO2020056921A1

WO2020056921A1 - Ultra-thin panel light

Info

Publication number: WO2020056921A1
Application number: PCT/CN2018/118060
Authority: WO
Inventors: 李文哲; 王艺; 谭朝阳
Original assignee: 广东君盛照明科技有限公司
Priority date: 2018-09-17
Filing date: 2018-11-29
Publication date: 2020-03-26
Also published as: CN109114474A

Abstract

The invention relates to an ultra-thin panel light. The ultra-thin panel light comprises a base, a light-transmitting cover, and a circuit board having multiple LED light sources. The light-transmitting cover and the base are connected to and engage with each other, and define a cavity for mounting the circuit board. The circuit board is parallel to the light-transmitting cover. A reflective sheet having small holes is provided on a light source surface of the circuit board. An optical lens is provided on each LED light source. The optical lenses are correspondingly embedded in the small holes of the reflective sheet. A beam angle β formed by a beam emitted by each LED light source and refracted by the optical lens is 150 degrees to 175 degrees. A distance H between each LED light source and the light-transmitting cover is 15-30 mm. A distance P between two adjacent LED light sources is 2H / ctan(0.5 × β). The invention has a simple structure, low costs, and high illumination efficiency and uniformity.

Description

Ultra-thin panel light

Technical field

The invention relates to the technical field of light lighting equipment, and more particularly, to an ultra-thin panel lamp.

Background technique

At present, there are two light source distribution modes for general panel lights on the market:

One is side-emission. The light source is mainly distributed around the sides of the chassis and arranged in the cross-section direction. The light is refracted and turned 90 degrees by the nano-light guide plate, and then directly emitted from the transparent plate surface. The height of the entire product can be made very thin, the cost is lower, and the light distribution is more uniform. But after the light is refracted through the nanoplate, the energy of the light is greatly attenuated. The light emitted through the translucent plate only has a small part of the original light source's luminous energy, the light efficiency is not high, and it cannot be a high-power product. Because the lamp beads are distributed on the strip, they cannot withstand high temperature, generally below 20W.

The other is direct light emission at the bottom, where the light source is distributed at the bottom and directly emitted by the light source distributed on the bottom aluminum substrate (glass fiberboard). There are also methods with and without lenses, which are emitted through a light-transmitting plate. In the direct light emission mode, although the energy loss of light is small, the emitted light is uneven, and there are often dark areas, light spots, and glare. However, in order to make the light distribution more uniform, secondary light distribution is required, mainly by adding lenses and reflective paper, and the effect of secondary light distribution is not very good, the light efficiency is not high, and the cost is also increased. It is above 30MM height. The problem of heat dissipation of high-power light sources is not very good, and there is a tendency of light decay. Therefore, the direct light emission on the market is not high, and the light is not uniform.

Summary of the Invention

The problem to be solved by the present invention is to provide an ultra-thin panel lamp with simple structure, low cost, and high light efficiency and uniformity.

In order to solve the above technical problems, the present invention provides an ultra-thin panel light, which includes a base, a light-transmitting mask, and a circuit board having a plurality of LED light sources. The circuit board is installed in a cavity, the circuit board is parallel to the light-transmitting mask, a light reflecting surface with a small hole is provided on the light source surface of the circuit board, and each of the LED light sources is provided with An optical lens correspondingly embedded in a small hole of the reflective paper, and a beam angle β formed by the light beam emitted by each of the LED light sources after being refracted by the optical lens is 150 degrees to 175 degrees. The distance H from the LED light source to the light-transmitting mask is 15 mm to 30 mm, and the distance P between two adjacent LED light sources is 2 H / ctan (0.5 * β).

As a preferred solution of the present invention, the circuit board is provided with at least two circles of LED light sources arranged uniformly in a ring shape from the inside to the outside.

As a preferred solution of the present invention, the circuit board is one of two circuit boards with the same number of lamp beads and the same arrangement in a circuit substrate divided from a circuit substrate according to a preset pattern.

As a preferred solution of the present invention, a thermally conductive aluminum plate is provided between the circuit board and the base.

As a preferred solution of the present invention, the light-transmitting mask has a diffusion plate parallel to the circuit board.

As a preferred solution of the present invention, the connection between the light-transmitting mask and the base is a screw connection, a screw connection, a snap connection, or a glue connection.

As a preferred solution of the present invention, the circuit board and the thermally conductive aluminum plate are sequentially fixed on the base by screws or hot-melt posts or buckles.

As a preferred solution of the present invention, a connecting wire is connected to the outside of the base, one end of the connecting wire is connected to the circuit board through the base, and the other end of the connecting wire is used to connect a power source.

As a preferred solution of the present invention, an elastic hanger is provided on the outside of the base.

As a preferred solution of the present invention, the heat conductive aluminum plate is provided with two buckles, and the base is provided with two buckle grooves corresponding to the buckles; the buckle grooves are convex toward the outside of the base. The elastic hanging piece is connected to the convex end of the buckle groove.

Compared with the prior art, an ultra-thin panel lamp implementing the present invention has the following beneficial effects:

The LED light source of the present invention realizes direct light emission through an optical lens and reflective paper, which improves the light efficiency. At the same time, the characteristics of the optical lens are used to expand the beam angle of the outgoing light, and by optimizing the distance between two adjacent LED light sources, While ensuring the uniformity of light, the distance from the LED light source to the light-transmitting mask can be reduced, thereby reducing the thickness of the entire panel light, and achieving the design of an ultra-thin panel light. In addition, the ultra-thin panel lamp of the present invention has the advantages of low cost, simple appearance, and simple assembly process of spare parts compared with the traditional products of the same power.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the embodiment of the present invention more clearly, the drawings of the embodiment will be briefly introduced below.

FIG. 1 is an assembly view of an ultra-thin panel lamp provided by the present invention;

2 is an exploded view of an ultra-thin panel lamp provided by the present invention;

3 is a schematic structural diagram of a circuit substrate;

FIG. 4 is a first structural schematic diagram of a circuit board; FIG.

FIG. 5 is a second structural schematic diagram of a circuit board;

FIG. 6 is a conversion relationship diagram between a distance P between two adjacent LED light sources and a beam angle β, and a distance H between the LED light source and the light-transmitting mask.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1 to FIG. 6, a preferred embodiment of the present invention is an ultra-thin panel light, which includes a base 1, a light-transmitting mask 2, and a circuit board 4 having a plurality of LED light sources 3. The light-transmitting mask 2 is cooperatively connected with the base 1 and forms a cavity for the circuit board 4 to be installed, the circuit board 4 is parallel to the light-transmitting mask 2, and a layer of tape is provided on the light source surface of the circuit board 4 Reflective paper 5 with small holes 51, each of the LED light sources 3 is provided with an optical lens 6, the optical lenses 6 are correspondingly embedded in the small holes 51 of the reflective paper 5, each of the LED light sources The beam angle β formed by the light beam 3 refracted by the optical lens 6 is 150 degrees to 175 degrees. The distance H between each LED light source 3 and the light-transmitting mask 2 is 15 mm to 30 mm. The interval P between the LED light sources 3 is 2H / ctan (0.5 * β).

Therefore, the LED light source 3 of the present invention realizes direct light emission through the optical lens 6 and the reflective paper 5 and improves the light efficiency. At the same time, the characteristics of the optical lens 6 are used to expand the beam angle of the outgoing light, and by optimizing two adjacent light sources, The distance between the LED light sources 3 can reduce the distance between the LED light source 3 and the light-transmitting mask 2 while ensuring the uniformity of light, thereby reducing the thickness of the entire panel light and realizing the design of an ultra-thin panel light. In addition, the ultra-thin panel lamp of the present invention has the advantages of low cost, simple appearance, and simple assembly process of spare parts compared with the traditional products of the same power.

Exemplarily, the circuit board is an aluminum-based circuit board or a glass fiber board. Exemplarily, the circuit board 4 is provided with at least two LED light sources 3 uniformly arranged in a ring shape from the inside to the outside. The circuit board 4 is one of two circuit boards 4 with the same number of lamp beads and the same arrangement pattern, which is divided from a circuit substrate according to a preset pattern. In this way, the design of the circuit board 4 is divided into two, which can greatly save product manufacturing costs. As shown in FIG. 3, there are 10 LED light sources 3 on the inner ring of the circuit substrate, and 20 LED light sources 3 on the outer ring of the circuit substrate. The circuit substrate is divided into two circuit boards 4 As shown in FIGS. 4 and 5, five LED light sources 3 on the inner ring of the two circuit boards 4 are provided, and 10 LED light sources 3 on the outer ring of the two circuit boards 4 are provided.

Exemplarily, a thermally conductive aluminum plate 7 is provided between the circuit board 4 and the base 1. Therefore, through the arrangement of the heat-conducting aluminum plate 7, the heat during the operation of the circuit board 4 can be taken out faster and better, the problem of heat dissipation of the high-power light source can be effectively solved, and the effect of reducing light decay can be achieved.

Exemplarily, the light-transmitting mask 2 has a diffuser plate 21 parallel to the circuit board 4, and the diffuser plate 21 can have a low glare effect, and can be better applied to indoor lighting places such as classroom lighting and office lighting. .

Exemplarily, in order to facilitate assembly, the connection between the light-transmitting mask 2 and the base 1 is a screw connection, or a screw connection, or a snap connection, or a glue connection; the circuit board 4 and the thermally conductive aluminum plate 7 pass through Screws or hot-melt columns or buckles are fixed on the base 1 in sequence. It should be noted that the cavity formed by the mating connection of the light-transmissive mask 2 and the base 1 is a closed cavity, which can prevent mosquitoes and dust from entering the cavity.

Exemplarily, in order to facilitate the connection of an external power source, a connecting wire 8 is connected to the outside of the base 1, and one end of the connecting wire 8 is connected to the circuit board 4 through the base 1. The other end is for power connection.

Exemplarily, an elastic pendant 9 is provided on the outer side of the base 1 to provide a reliable connection member for mounting the product on the ceiling.

Exemplarily, the heat conductive aluminum plate 7 is provided with two buckles 71, and the base 1 is provided with two buckle grooves 11 corresponding to the buckle 71, thereby passing the buckle 71 and the buckle grooves. With the cooperation of 11, the rapid positioning and installation of the heat conductive aluminum plate 7 is realized. Further, the buckle groove 11 is convex toward the outside of the base 1, and the elastic hanging piece 9 is connected to the convex end of the buckle groove 11. It can be seen that the design of the buckle groove 11 has the effect of multi-purpose and reduces the structural design on the assembly process of parts. It should also be noted that the connection between the elastic hanging piece 9 and the protruding end may be a fixed connection or a detachable connection.

What has been disclosed above are only the preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the scope of patent application of the present invention still fall within the scope of the present invention.

Claims

An ultra-thin panel lamp is characterized in that it includes a base, a light-transmitting mask, and a circuit board having a plurality of LED light sources. The light-transmitting mask is cooperatively connected with the base and forms a cavity that can be installed by the circuit board. The circuit board is parallel to the light-transmitting mask. The light source surface of the circuit board is provided with a layer of reflective paper with a small hole. Each of the LED light sources is provided with an optical lens. The lens is correspondingly embedded in the small hole of the reflective paper, and the beam angle β formed by the light beam emitted by each of the LED light sources after being refracted by the optical lens is 150 degrees to 175 degrees. The interval H between the masks is 15 mm to 30 mm, and the interval P between two adjacent LED light sources is 2H / ctan (0.5 * β).
The ultra-thin panel light according to claim 1, wherein at least two circles of LED light sources are uniformly arranged in a circular shape from the inside to the outside on the circuit board.
The ultra-thin panel lamp according to claim 2, wherein the circuit board is a circuit board which is divided into two circuit boards with the same number of lamp beads and the same arrangement by a circuit substrate divided according to a preset pattern. One.
The ultra-thin panel light according to claim 1, wherein a thermally conductive aluminum plate is provided between the circuit board and the base.
The ultra-thin panel light according to claim 1, wherein the light-transmitting mask has a diffusion plate parallel to the circuit board.
The ultra-thin panel light according to claim 1, wherein the connection between the light-transmitting mask and the base is a screw connection, or a screw connection, or a snap connection, or a glue connection.
The ultra-thin panel lamp according to claim 4, wherein the circuit board and the heat-conducting aluminum plate are sequentially fixed on the base by screws or hot-melt posts or buckles.
The ultra-thin panel light according to claim 1, wherein a connecting wire is connected to the outside of the base, and one end of the connecting wire is connected to the circuit board through the base, and the other of the connecting wire is One end is for power connection.
The ultra-thin panel light according to claim 4, wherein an elastic hanger is provided on the outside of the base.
The ultra-thin panel light according to claim 9, wherein the heat-conducting aluminum plate is provided with two buckles, and the base is provided with two buckle grooves corresponding to the buckle; The buckle groove is convex toward the outside of the base, and the elastic hanging piece is connected to the convex end of the buckle groove.