CN212390198U

CN212390198U - Panel light

Info

Publication number: CN212390198U
Application number: CN202021171549.4U
Authority: CN
Inventors: 林惠菊; 刘政昆; 张建生
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-01-22
Anticipated expiration: 2030-06-22
Also published as: EP3929483A1

Abstract

The application belongs to the technical field of lighting device, especially, relate to a panel light. In the panel lamp, ribs are arranged on the annular blocking wall of the face frame. During assembly, the edge portion of the outer surface of the diffusion plate abuts against the rib, and the annular flange of the base plate abuts against the edge portion of the inner surface of the diffusion plate, so that the edge of the base plate is fixed on the face frame. Because the pressure of chassis annular flange to the diffuser plate is opposite with both directions of the pressure of rib to the diffuser plate, annular flange supports the position of locating the diffuser plate and diffuser plate middle part interval is less than the position and diffuser plate middle part interval that the rib supported the diffuser plate, the diffuser plate can outwards bulge like this, thereby the intensity of diffuser plate has been increased, make the panel light less at normal use with the deformation of keeping flat when the show of diffuser plate, reduce the gravity flagging condition of diffuser plate, make the interval of light source subassembly and diffuser plate in the predetermined range, and then make the output light type all more even when normal use and the show of keeping flat, the difference is less, the improvement of optical quality has been realized.

Description

Panel light

Technical Field

The application belongs to the technical field of lighting device, especially, relate to a panel light.

Background

The prior panel lamp is changed from a traditional grid lamp panel with a lamp tube into a light emitting mode combining an LED light source and a diffusion plate. The height of the prior panel lamp is usually between 50 and 100mm, and the phenomenon that the strength of a plane diffusion plate is insufficient and the plane diffusion plate sags exists. The panel light is arranged downwards when in normal use, and the middle part of the diffusion plate is outwards protruded. The diffuser plate sets up when the panel light is keeping flat the show, and the diffuser plate middle part can be to the indent, and the diffuser plate can be close to the light source subassembly, plays groined type light type, and optical quality can not reach the requirement. Thus, the output light pattern of the panel light is greatly different between normal use and flat display.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a panel light to solve the great technical problem of output light type difference of current panel light when normal use and the show of keeping flat.

The embodiment of the application provides a panel lamp, which comprises a face frame, a diffusion plate, a chassis and a light source assembly; the face frame is provided with an annular blocking wall, and ribs are arranged on the annular blocking wall; the diffusion plate is provided with an outer surface and an inner surface which are opposite, and the edge part of the outer surface of the diffusion plate is abutted to the rib; the bottom plate is provided with an annular flange, the edge part of the bottom plate is fixed on the face frame, the annular flange is abutted against the edge part of the inner surface of the diffusion plate, and the distance between the position where the annular flange is abutted against the diffusion plate and the middle part of the diffusion plate is smaller than the distance between the position where the rib is abutted against the diffusion plate and the middle part of the diffusion plate; the light source assembly is installed on the chassis, and the light emitting side of the light source assembly faces the diffusion plate.

Optionally, the face frame comprises a plurality of profiles, the profiles being arranged in a ring; or the face frame is of an integrally formed structure.

Optionally, an annular boss is arranged at the outer edge of the face frame, an annular limiting groove is formed between the inner wall of the annular boss and the annular blocking wall, and the annular flange is accommodated in the annular limiting groove; the edge part of the chassis is fixed on the annular boss.

Optionally, the edge portion of the chassis and the face frame are connected by a fastener.

Optionally, the ribs have a square, triangular, trapezoidal or semi-circular cross-section.

Optionally, the ribs are arranged around the inner edge of the face frame;

or the ribs are arranged into a plurality of sections which are distributed on the face frame in an annular manner.

Optionally, the chassis has a plurality of positioning grooves, the number of the light source assemblies is multiple, and the light source assemblies are respectively disposed in different positioning grooves.

Optionally, the light source assembly comprises a substrate and LED beads arranged on the substrate, the substrate is arranged on the chassis, and the LED beads face the diffusion plate.

Optionally, the panel light further includes a driving assembly, and the driving assembly is electrically connected to the light source assembly.

Optionally, the face frame is square, circular, oval or triangular.

One or more technical solutions provided in the embodiments of the present application have at least one of the following technical effects: in the panel lamp, the ribs are arranged on the annular blocking wall of the face frame, so that the strength of the face frame can be increased. During assembly, the edge portion of the outer surface of the diffusion plate abuts against the rib, and the annular flange of the base plate abuts against the edge portion of the inner surface of the diffusion plate, so that the edge of the base plate is fixed on the face frame. Because the pressure of chassis annular flange to the diffuser plate is opposite with both directions of the pressure of rib to the diffuser plate, the position that annular flange supports to locate the diffuser plate and the interval at diffuser plate middle part are less than the interval that the rib supports to locate the position of diffuser plate and diffuser plate middle part, the diffuser plate can outwards bulge like this, thereby the intensity of diffuser plate has been increased, make the panel light less in normal use and the deformation ratio of diffuser plate when keeping flat the show, reduce the gravity flagging condition of diffuser plate, make the interval of light source subassembly and diffuser plate in the predetermined range, and then make the output light type all more even when normal use and the show of keeping flat, the difference is less, the improvement of optical quality has been realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective assembly view of a panel light provided by an embodiment of the present application when the panel light is in a flat display;

FIG. 2 is an assembled perspective view of the panel light of FIG. 1 in normal use;

FIG. 3 is an exploded perspective view of the panel light of FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a perspective view of the chassis in the panel light of FIG. 3;

FIG. 6 is a partial cross-sectional view taken along line A-A of FIG. 1;

fig. 7 is a schematic diagram illustrating a modification of the diffuser plate in the panel light of fig. 1.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the embodiments of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the embodiments of the present application. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In a conventional panel lamp, a face frame is used to fix a diffusion plate and a chassis, and the diffusion plate is sandwiched between the face frame and the chassis. Conventional panel light is when keeping flat the show, and the diffuser plate sets up, and there is the flagging phenomenon of gravity in the diffuser plate, and the diffuser plate is flagging to be close to the light source more easily, sees the light source subassembly more easily, and the groined type light type can be beaten out to the panel light, and optical quality can not reach the requirement.

Referring to fig. 1 to 3, an embodiment of a panel lamp includes a face frame 10, a diffusion plate 20, a chassis 30 and a light source assembly 40. Referring to fig. 4, the face frame 10 has an annular barrier wall 11, and ribs 12 are provided on the annular barrier wall 11. Referring to fig. 6, the diffusion plate 20 has an outer surface 20a and an inner surface 20b opposite to each other, and the edge portion of the outer surface 20a of the diffusion plate 20 abuts against the ribs 12. The bottom plate 30 has an annular flange 31, the edge portion of the bottom plate 30 is fixed to the face frame 10, the annular flange 31 abuts against the edge portion of the inner surface 20b of the diffuser plate 20, and the distance between the position where the annular flange 31 abuts against the diffuser plate 20 and the middle portion of the diffuser plate 20 is smaller than the distance between the position where the ribs 12 abut against the diffuser plate 20 and the middle portion of the diffuser plate 20. The center of diffuser plate 20 can be understood as passing through the center line of outer surface 20a and inner surface 20b of diffuser plate 20. Referring to fig. 3, the light source assembly 40 is mounted on the chassis 30, and a light emitting side of the light source assembly 40 faces the diffusion plate 20.

Compared with the prior art, the panel lamp provided by the application has the advantages that the ribs 12 are arranged on the annular blocking wall 11 of the face frame 10, and the strength of the face frame 10 can be increased. As shown in fig. 6 and 7, when assembled, the edge portion of the outer surface 20a of the diffuser plate 20 abuts against the rib 12, and the annular flange 31 of the bottom plate 30 abuts against the edge portion of the inner surface 20b of the diffuser plate 20, thereby fixing the edge of the bottom plate 30 to the face frame 10. Because the pressure F1 of the annular flange 31 of the chassis 30 to the diffuser 20 and the pressure F2 of the rib 12 to the diffuser 20 are opposite in direction, the distance between the position where the annular flange 31 abuts against the diffuser 20 and the middle of the diffuser 20 is smaller than the distance between the position where the rib 12 abuts against the diffuser 20 and the middle of the diffuser 20, so that the diffuser 20 bulges outwards in fig. 6 and 7, thereby increasing the strength of the diffuser 20, reducing the deformation of the diffuser 20 when the panel lamp is used normally and displayed flatly, reducing the gravity sag of the diffuser 20, making the distance between the light source assembly 40 and the diffuser 20 within a predetermined range, further making the output light pattern uniform when the panel lamp is used normally and displayed flatly, and achieving the improvement of optical quality.

The diffuser plate 20 may be made of PC (polycarbonate), PS (polystyrene), or PP (polypropylene). The chassis 30 can be formed by the metal plate stamping and spraying process, is easy to manufacture, and is beneficial to increasing the strength of the chassis 30. The bottom chassis 30 has an inner cavity 33, and the light source assembly 40 may be disposed on an inner bottom surface of the bottom chassis 30.

Illustratively, the rib 12 is arranged on the annular blocking wall 11 of the face frame 10, the edge part of the outer surface 20a of the diffusion plate 20 abuts against the rib 12 during assembly, the annular flange 31 of the bottom plate 30 abuts against the edge part of the inner surface 20b of the diffusion plate 20, so that the middle part of the diffusion plate 20 bulges outwards, the droop of the diffusion plate 20 can be reduced by about 5mm, the light emitting angle of a light source is improved, the overall height of the lamp is reduced, and the output light type of the panel lamp is uniform.

In conventional panel lamps, for diffuser plates of different thicknesses, thinner diffuser plates have lower strength and may sag more significantly. For diffuser plates made of different materials, the PP and PC diffuser plates also have more obvious sagging than the PS diffuser plates. The larger the diffuser plate aspect ratio, the greater the sag for different sized diffuser plates.

The panel light of the present embodiment can be adapted to the diffusion plates 20 with different sizes, different thicknesses, different materials, and different length-width ratios, so that the middle portions of the diffusion plates 20 assembled between the face frame 10 and the chassis 30 are all bulged outward, thereby realizing the shape adjustment of the diffusion plates 20. Thus, the material and thickness of the diffusion plate 20 can be changed, and more choices are available, thereby reducing the material cost.

Referring to fig. 2 and 3, in another embodiment of the present application, the surface frame 10 is square, circular, oval, triangular or other shapes, and is disposed as required. The annular blocking wall 11 of the face frame 10 and the annular flange 31 of the bottom plate 30 can be in an annular structure such as a circle, an ellipse, a square, a round corner square and the like, and are arranged as required. Illustratively, the face frame 10 is square, the annular wall 11 is also square, and correspondingly, the diffuser plate 20 and the bottom plate 30 are also square at their outer edges.

Referring to fig. 3, in another embodiment of the present application, the face frame 10 includes a plurality of profiles 13, and the profiles 13 are arranged in a ring shape, so that a plurality of profiles 13 can be manufactured and assembled to form one profile 13. The face frame 10 can be made of aluminum profiles or other metal profiles. Illustratively, the face frame 10 is square, the section bars 13 are arranged in four, and the four section bars 13 enclose the square face frame 10. It will be appreciated that the face frame 10 may also be of unitary construction.

Referring to fig. 4 and 6, in another embodiment of the present application, an annular boss 14 is disposed at an outer edge of the face frame 10, an annular limiting groove 15 is formed between an inner wall of the annular boss 14 and the annular blocking wall 11, and the annular flange 31 is accommodated in the annular limiting groove 15; the edge portion of the base plate 30 is fixed to the annular boss 14. The annular boss 14 is provided to facilitate the assembly of the base plate 30, and when the annular flange 31 of the base plate 30 is placed in the annular limiting groove 15 during the assembly, the edge portion of the base plate 30 is aligned with the annular boss 14 of the face frame 10, thereby improving the assembly efficiency.

Referring to fig. 6, in another embodiment of the present application, the edge portion of the chassis 30 is connected to the face frame 10 by a fastener 50. The chassis 30 can be securely attached to the face frame 10 using the fasteners 50. Illustratively, the fasteners 50 are screws that pass through the edge portion of the chassis 30 and are screwed to the face frame 10.

Referring to fig. 4 and 6, in another embodiment of the present application, the cross-section of the ribs 12 is square, triangular, trapezoidal, or semicircular, or other shapes, and is configured as required. When the ribs 12 are arranged in a structure with a triangular cross section, the triangular inclined surfaces of the ribs 12 are close to the inner edge of the face frame 10, and when the diffuser plate 20 is assembled on the face frame 10, the inclined surface area of the ribs 12 is abutted to the edge part of the outer surface 20a of the diffuser plate 20, so that the diffuser plate 20 is stressed uniformly, the strength of the diffuser plate 20 is better, and the deformation of the diffuser plate 20 is smaller when the diffuser plate is horizontally placed for display and normal use.

Referring to fig. 4 and 6, in another embodiment of the present application, the ribs 12 are disposed around the inner edge of the surface frame 10, and when the ribs 12 abut against the edge of the outer surface 20a of the diffuser plate 20, the annular flange 31 of the base plate 30 abuts against the inner surface 20b of the diffuser plate 20, so that the diffuser plate 20 is deformed, and the middle portion of the diffuser plate 20 protrudes outward.

It is understood that the ribs 12 may be provided in multiple segments, the multiple segments of ribs 12 are annularly distributed on the face frame 10, and when the ribs 12 abut against the edge portion of the outer surface 20a of the diffuser plate 20, the annular flange 31 of the combination bottom plate 30 abuts against the inner surface 20b of the diffuser plate 20, so that the diffuser plate 20 can also be deformed to some extent, and the middle portion of the diffuser plate 20 is protruded outward.

Referring to fig. 3 and 5, in another embodiment of the present disclosure, the chassis 30 has a plurality of positioning slots 32, a plurality of light source assemblies 40 are provided, and the light source assemblies 40 are respectively disposed in different positioning slots 32, so that the light source assemblies 40 are conveniently positioned and mounted. Exemplarily, constant head tank 32 is the bar and the interval sets up, and light source subassembly 40 is the bar, and the light source subassembly 40 of being convenient for is installed in different positions to dispel the heat to a plurality of light source subassemblies 40, improve the radiating effect.

Referring to fig. 3, in another embodiment of the present application, the light source assembly 40 includes a substrate 41 and LED beads 42 disposed on the substrate 41, the substrate 41 is disposed on the chassis 30, and the LED beads 42 are disposed toward the diffusion plate 20. This facilitates the fabrication of the light source assembly 40, which facilitates the dissipation of heat generated by the light source assembly 40 from the chassis 30 to the external environment.

Referring to fig. 3, in another embodiment of the present application, the panel lamp further includes a driving element (not shown), and the driving element is electrically connected to the light source assembly 40. The driving assembly is used for converting an external power source into a power source required by the light source assembly 40, and driving the light source assembly 40 to operate. The driving assembly is arranged outside the chassis 30, so that the possibility that heat generated by the light source assembly 40 is transmitted to the driving assembly is reduced, and the reliability of the lamp is improved.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A panel lamp is characterized by comprising a face frame, a diffusion plate, a chassis and a light source component; the face frame is provided with an annular blocking wall, and ribs are arranged on the annular blocking wall; the diffusion plate is provided with an outer surface and an inner surface which are opposite, and the edge part of the outer surface of the diffusion plate is abutted to the rib; the bottom plate is provided with an annular flange, the edge part of the bottom plate is fixed on the face frame, the annular flange is abutted against the edge part of the inner surface of the diffusion plate, and the distance between the position where the annular flange is abutted against the diffusion plate and the middle part of the diffusion plate is smaller than the distance between the position where the rib is abutted against the diffusion plate and the middle part of the diffusion plate; the light source assembly is installed on the chassis, and the light emitting side of the light source assembly faces the diffusion plate.

2. The panel light of claim 1, wherein the face frame comprises a plurality of profiles, the profiles being in an annular arrangement; or the face frame is of an integrally formed structure.

3. The panel lamp according to claim 1, wherein an annular boss is provided at an outer edge of the face frame, an annular limiting groove is formed between an inner wall of the annular boss and the annular blocking wall, and the annular flange is received in the annular limiting groove; the edge part of the chassis is fixed on the annular boss.

4. The panel light of claim 1, wherein the edge portion of the chassis and the bezel are connected by a fastener.

5. The panel light of claim 1, wherein the ribs have a square, triangular, trapezoidal, or semi-circular cross-section.

6. The panel light of any of claims 1 to 5, wherein the rib is disposed around an inner edge of the bezel;

7. The panel light as claimed in any one of claims 1 to 5, wherein the chassis has a plurality of positioning grooves, and the number of the light source assemblies is plural, and the light source assemblies are respectively disposed at different positioning grooves.

8. The panel light of any one of claims 1 to 5, wherein the light source assembly comprises a substrate and LED beads disposed on the substrate, the substrate is disposed on the chassis, and the LED beads are disposed toward the diffusion plate.

9. The panel lamp as claimed in any one of claims 1 to 5, further comprising a driving assembly electrically connected to the light source assembly.

10. The panel light of any of claims 1 to 5, wherein the bezel is square, circular, oval, or triangular.