WO2020082725A1

WO2020082725A1 - Novel led panel lamp

Info

Publication number: WO2020082725A1
Application number: PCT/CN2019/086964
Authority: WO
Inventors: 盛玉林
Original assignee: 昆山市诚泰电气股份有限公司
Priority date: 2018-10-25
Filing date: 2019-05-15
Publication date: 2020-04-30

Abstract

The present invention discloses a novel LED panel lamp, comprising: a lamp frame, a light guide structure, a back plate and a light source; the light source, the light guide structure and the back plate are mounted in the lamp frame; the light guide structure includes a diffusion plate, a light guide layer and a reflecting layer; the back plate is located on the surface of the reflecting layer; the light guide layer includes two opposite surfaces comprising a back surface and a front surface respectively; the reflecting layer is located on the back surface of the light guide layer; and the diffusion plate is located on the front surface of the light guide layer. According to the present invention, the panel lamp can effectively prevent deformation of an outline of the lamp frame when the back plate is locked, has good lamp frame deformation resistance effect, thereby eliminating damage of the light source due to locking of the back plate, making up to a certain extent light guide flaw caused by the flaw of the light guide layer itself, guaranteeing homogeneity, brightness and softness of light finally projected by the LED panel lamp; and saving materials and reducing cost; moreover, the panel lamp is light and can be easily accepted by consumers.

Description

A new type of LED flat lamp

Technical field

The invention belongs to the technical field of flat panel lights, and particularly relates to a new type of LED flat panel structure.

Background technique

LED is a semiconductor light-emitting diode. LED energy-saving lamp is a high-brightness white light-emitting diode light source. It has high light efficiency, low power consumption, long life, easy control, maintenance-free, safety and environmental protection. Bright, colorful, low consumption, low energy consumption, green and environmental protection. LED flat lamp has the advantages of energy saving, soft and uniform light, beautiful appearance, no pollution and ultra-thin design that is easy to integrate into the overall building design and is gradually promoted.

The existing LED panel lights on the market have their back plates locked to the back of the light frame by screws. However, this kind of locking method often damages the LED fixed on the light frame due to the deformation of the light frame caused by the locking screw. As for the light source, since the LED light source is sandwiched between the side wall of the lamp frame and the side wall of the light guide layer in position, the deformation of the light frame will squeeze the LED light source, causing damage to the LED light source.

In addition, the light guide layer is a light guide element, and the light guide layer is generally formed by melting and extruding plastic, so the light guide layer itself easily contains impurity particles, plus the subsequent processing of the light guide point on the surface of the light guide layer , It is also possible to damage the light guide layer, so that when the light passes through the light guide layer, the defects of the light guide layer will be amplified, affecting the light guide, transparency, and thus the uniformity and brightness of the final projected light. User experience and experience.

In order to overcome the above-mentioned shortcomings, the designer actively and innovatively researched and created a new type of LED flat lamp.

Summary of the invention

The main technical problem solved by the present invention is to provide a new type of LED flat lamp, which can effectively prevent the deformation of the lamp frame when locking the back plate, and has an excellent anti-deformation effect of the lamp frame, thereby preventing damage to the light source caused by the locking back plate To a certain extent, it can make up for the light guide defects caused by the defects of the light guide layer itself, and ensure the uniformity, brightness and softness of the light finally projected by the LED flat lamp; and save materials, reduce costs, light weight, more easily Consumers love it.

In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a new type of LED flat lamp, which includes a lamp frame, a light guide structure, a back plate and a light source;

The light source, the light guide structure and the back plate are all mounted on the lamp frame;

The light guide structure includes a diffusion plate, a light guide layer and a reflective layer, the back plate is located on the surface of the reflective layer, the light guide layer has two opposite surfaces and are a back surface and a front surface, respectively, and the reflective layer Is located on the back of the light guide layer, and the diffusion plate is located on the front of the light guide layer;

The light frame is one of the following two structures:

The lamp frame is formed by connecting and enclosing a plurality of frame strips end to end. The frame strip includes a first hollow body, a second hollow body, a connection area and a supporting portion. A first cavity is formed in the first hollow body Area, a second cavity area is formed in the second hollow body, the first hollow body is located at the periphery of the second hollow body, the connection area connects the first hollow body and the second hollow body, the support The supporting portion extends from the second hollow body, and the second hollow body is located at the periphery of the supporting portion, the supporting portion is located at the front of the lamp frame, and the connecting area is provided with a plurality of screw holes, The opening of the screw hole is located on the back of the lamp frame;

Alternatively, the lamp frame is formed by connecting and enclosing a plurality of frame strips end to end. The frame strip is a hollow structure having a closed cavity. The inner side of the frame strip extends to form a supporting portion. The closed cavity is provided at The periphery of the supporting portion, the supporting portion is located on the front of the lamp frame, the closed cavity includes a first cavity area, an intermediate cavity area and a second cavity area, two sides of the intermediate cavity area are respectively The first cavity area and the second cavity area are connected, and a locking area is provided on the back of the intermediate cavity area, the locking area is provided with a plurality of screw holes, and the openings of the screw holes are located on the light frame back;

The diffusion plate is one of the following three structures:

The diffuser plate is a hollow tube with a cavity in the middle and openings at both ends. The hollow tube has two opposite surfaces and is a top surface and a bottom surface of the diffuser plate respectively. The side near the light guide layer is defined as the top surface. And the other surface is a bottom surface, the top surface is a flat surface, and can be closely attached to the surface of the light guide layer;

Alternatively, the diffuser plate is a thin plate with a cavity in the middle, the thin plate has two opposite surfaces and is a top surface and a bottom surface of the diffuser plate, respectively, defining the side close to the light guide layer as the top surface and the other side as the bottom surface , The top surface is flat, and can be closely attached to the surface of the light guide layer;

Alternatively, the edge of the diffuser plate is bent or curved toward the side close to the light guide layer, and the edge of the diffuser plate is in contact with the front surface of the light guide layer to form between the diffuser plate and the light guide layer In the cavity, the diffusion plate includes a bottom surface and a side surface, and the side surface is directly connected to the front surface of the light guide plate or connected through the top surface.

Further, the side surface is a flat surface, a curved surface or an inclined surface.

Further, the bottom surface is a flat surface, a curved surface or an inclined surface.

Further, the first cavity area is higher than the second cavity area, and a shoulder is formed on the back surface of the first cavity area, the shoulder portion and the back surface of the second cavity area Flush.

Further, the outer side wall of the lamp frame is provided with a concave-convex structure.

Further, the LED flat lamp is further provided with a buffer layer, and the buffer layer is provided between the light guide structure and the back plate.

Further, the diffusion plate is PS (polystyrene) plate, PMMA (polymethyl methacrylate) plate, PC (polycarbonate) plate, PET (polyethylene terephthalate) plate, PP (polypropylene) board or PE (polyethylene) board.

Further, the buffer layer is plastic or foam.

Further, the lamp frame is a metal lamp frame, a metal alloy lamp frame or a plastic lamp frame.

Further, the light source is an LED light bar, an OLED light bar, an LED lamp bead, or an OLED lamp bead.

The beneficial effects of the present invention are:

The LED flat lamp of the present invention includes a lamp frame, a light guide structure, a back plate and a light source. Since the lamp frame has a cavity area, the pressure generated by the locking screw is absorbed by the cavity area, and the lamp is avoided by the internal deformation of the cavity area The shape of the frame is deformed, so that the lamp frame has an excellent anti-deformation effect, thus preventing damage to the light source caused by the lock back plate; in addition, the interior of the diffusion plate has a cavity or a cavity is formed between the diffusion plate and the light guide layer To a certain extent, make up for the light guide defects caused by the defects of the light guide layer itself (such as the projected light will have local shadows, etc.), to ensure the uniformity, brightness and softness of the final projected light;

Furthermore, the design of the shoulder of the lamp frame of the LED flat lamp of the present invention can better position the back plate, so that the back can be positioned before locking, and will not move randomly when locked;

Furthermore, the LED flat lamp of the present invention also adds a buffer layer between the back plate and the light guide structure, which can further absorb the pressure brought by the back plate when locked, thereby further preventing the deformation of the lamp frame;

Furthermore, in the present invention, the diffusion plate adopting this structure is compared with the traditional solid diffusion plate. First, it saves materials and lowers the cost, thereby lowering the selling price, and is more easily liked by consumers; second, it is lightweight.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and can be implemented according to the content of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.

BRIEF DESCRIPTION

Figure 1.1 is a schematic diagram of the overall structure of Example 1;

1.2 is a cross-sectional view of the lamp frame of Example 1;

2.1 is a cross-sectional view of the light guide structure of Example 1;

2.2 is a cross-sectional view of the light guide structure of Example 2;

2.3 is a cross-sectional view of the light guide structure of Example 3;

2.4 is a cross-sectional view of the light guide structure of Example 4;

Figure 3.1 is a front view of a light guide structure of Example 5;

Figure 3.2 is a front view of a light guide structure of Example 6;

Fig. 3.3 is a front view of the light guide structure of Example 7;

3.4 is a front view of the light guide structure of Example 8;

Figure 4.1 is one of the cross-sectional views of the light guide structure of Example 9;

Figure 4.2 is the second cross-sectional view of the light guide structure of Example 9;

Figure 4.3 is the third cross-sectional view of the light guide structure of Example 9;

FIG. 4.4 is one of the cross-sectional views of the light guide structure of Example 10;

Figure 4.5 is the second cross-sectional view of the light guide structure of Example 10;

Figure 4.6 is the third cross-sectional view of the light guide structure of Example 10;

Fig. 4.7 is the third cross-sectional view of the light guide structure of Example 11

Figure 5.1 is a schematic diagram of the overall structure of Example 12;

Figure 5.2 is a sectional view of the lamp frame of Example 13;

The parts in the drawings are marked as follows:

Lamp frame 1, frame strip 11, screw hole 111, first hollow body 112, first cavity region 1121, shoulder 11211, second hollow body 113, second cavity region 1131, intermediate cavity region 1141, support Part 114, connection area 115, locking area 116, concave-convex structure 117, closed cavity 118, light guide structure 2, diffusion plate 21, cavity 211, top surface 212, bottom surface 213, side surface 214, light guide layer 22, reflection Layer 23, backplane 3, light source 4, buffer layer 5, screws 6.

detailed description

The following describes specific embodiments of the present invention through specific specific embodiments. Those skilled in the art can easily understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented in other different ways, that is, different modifications and changes can be made without departing from the scope disclosed by the present invention.

Embodiment 1: A new type of LED flat lamp, as shown in Figure 1.1 and Figure 1.2, the flat lamp includes a lamp frame 1, a light guide structure 2, a back plate 3 and a light source 4;

The light guide structure includes a diffusion plate 21, a light guide layer 22, and a reflective layer 23. The back plate is located on the surface of the reflective layer. The light guide layer has two opposite surfaces and is a back surface and a front surface, respectively. The reflective layer is located on the back of the light guide layer, and the diffusion plate is located on the front of the light guide layer;

The lamp frame 1 is formed by connecting and enclosing a plurality of frame strips 11 end to end. The frame strip includes a first hollow body 112, a second hollow body 113, a connection area 115, and a supporting portion 114. The first hollow body A first cavity region 1121 is formed, a second cavity region 1131 is formed in the second hollow body, the first hollow body is located at the periphery of the second hollow body, and the connection region connects the first hollow body and A second hollow body, the supporting portion extends from the second hollow body, and the second hollow body is located at the periphery of the supporting portion, and the supporting portion is located at the front of the lamp frame, The connection area is provided with a plurality of screw holes 111, and the openings of the screw holes are located on the back of the light frame; the back plate is locked to the back of the light frame by screws 6 and the screw holes.

In this embodiment, the connection area is a third hollow body in which a third cavity area is formed.

Due to the first cavity area and the second cavity area on both sides of the screw hole, the pressure generated by the lock screw will be absorbed by the first cavity and the second cavity, and the lamp frame is avoided by the internal deformation of the two cavity The shape deformation of the lamp frame makes the lamp frame have an excellent anti-deformation effect, so as to prevent the light source damage caused by the lock back plate.

The first cavity area is higher than the second cavity area, and a back portion 11211 is formed on the back surface of the first cavity area, and the shoulder portion is flush with the back surface of the second cavity area.

The shoulder design of the light frame can better position the back plate, so that the back can be positioned before locking, and will not move randomly when locked.

In this embodiment, a concave-convex structure 117 is provided on the outer side wall of the lamp frame. A concave-convex structure is provided on the outside of the lamp frame to enhance the structural strength of the lamp frame.

In this embodiment, the LED flat lamp is further provided with a buffer layer 5, and the buffer layer is provided between the light guide structure and the back plate.

The buffer layer 5 is plastic or foam.

The lamp frame is a metal lamp frame, a metal alloy lamp frame or a plastic lamp frame.

The light source is an LED light bar, an OLED light bar, an LED lamp bead, or an OLED lamp bead.

In this embodiment, as shown in FIG. 2.1, the diffusion plate is a hollow tube with a cavity 211 in the middle and openings at both ends. The hollow tube has two opposite surfaces and is respectively a top surface 212 of the diffusion plate and The bottom surface 213 defines a surface close to the light guide layer as a top surface, and the other surface as a bottom surface. The top surface is a flat surface and can be closely attached to the surface of the light guide layer 22.

The bottom surface of the hollow tube is flat.

The hollow tube further includes a side surface 214, and the bottom surface and the top surface are connected by the side surface. In this embodiment, the side surface is a flat surface, but it is not limited thereto. For example, the side surface may also be an inclined surface or an arc surface.

The diffusion plate is PS (polystyrene) plate, PMMA (polymethyl methacrylate) plate, PC (polycarbonate) plate, PET (polyethylene terephthalate) plate, PP (polypropylene) ) Board or PE (polyethylene) board, but not limited to this.

The hollow tube is an extruded hollow tube.

Due to the use of a hollow diffuser with a cavity, it can compensate for the light guide defects caused by the defects of the light guide layer to a certain extent (such as the projected light will have local shadows, etc.) to ensure the uniformity of the final projected light , Brightness and softness.

Example 2: A new type of LED flat lamp, as shown in Figure 2.2, has a similar structure to Example 1, except that:

The bottom surface 213 of the hollow tube is a curved surface.

Embodiment 3: A new type of LED flat lamp, as shown in FIG. 2.3, has a similar structure to Embodiment 1, except that the bottom surface 213 of the hollow tube is an inclined surface. The hollow tube further includes a side surface 214, and the bottom surface and the top surface are connected by the side surface. In this embodiment, the side surface is a flat surface, but it is not limited thereto. For example, the side surface may also be an inclined surface or an arc surface.

Embodiment 4: A new type of LED flat lamp, as shown in FIG. 2.4, has a similar structure to Embodiment 2, except that the arc surface is directly connected to the top surface 212.

Embodiment 5: A new type of LED flat lamp, as shown in FIG. 3.1, has a similar structure to Embodiment 1, except that the diffusion plate 21 is a thin plate with a cavity in the middle, and the thin plate has a relative The two surfaces are the top surface 212 and the bottom surface 213 of the diffusion plate, respectively, defining the side close to the light guide layer as the top surface, and the other side as the bottom surface, the top surface is a flat surface, and can be close to the surface of the light guide layer 23 fit.

In this embodiment, the bottom surface 213 of the thin plate is flat.

In this embodiment, the diffusion plate further includes a side surface 214, and the bottom surface and the top surface are connected by the side surface. In this embodiment, the side surface is a flat surface, but it is not limited thereto. For example, the side surface may also be an inclined surface or an arc surface.

The thin plate is a blow-molded thin plate.

Embodiment 6: A new type of LED flat lamp, as shown in Figure 3.2, has a similar structure to Embodiment 5 except for:

The bottom surface 213 of the thin plate is a curved surface. The diffusion plate further includes a side surface 214, and the bottom surface and the top surface are connected by the side surface.

In this embodiment, the side surface is a flat surface, but it is not limited thereto. For example, the side surface may also be an inclined surface or an arc surface.

Embodiment 7: A new type of LED flat lamp, as shown in FIG. 3.3, has a similar structure to Embodiment 5 except for:

The bottom surface of the thin plate 213 is an inclined surface. The diffusion plate further includes a side surface 214, and the bottom surface and the top surface are connected by the side surface.

Embodiment 8: A novel LED flat lamp, as shown in FIG. 3.4, has a similar structure to Embodiment 6, except that the arc surface is directly connected to the top surface.

In addition, the bottom surface of the thin plate may be spherical.

Embodiment 9: A new type of LED flat lamp, as shown in FIGS. 4.1 to 4.3, has a similar structure to Embodiment 1, except that the edge of the diffusion plate is bent toward the side close to the light guide layer Or curved, and the edge of the diffusion plate is in contact with the front surface of the light guide layer, so that a cavity 211 is formed between the diffusion plate and the light guide layer.

In this embodiment, the diffusion plate includes a bottom surface 213 and a side surface 214, the bottom surface and the side surface are connected, and the side surface is in close contact with the front surface of the light guide layer.

The side surface is flat, curved or inclined. The arc surface may be a concave arc surface or a convex arc surface.

The bottom surface is a flat surface, a curved surface or an inclined surface. The arc surface may be a concave arc surface or a convex arc surface.

As shown in Figure 4.1, the side and bottom of the diffuser are flat; in Figure 4.2, the side of the diffuser is flat and the bottom is curved; Figure 4.3 The side of the diffuser is flat and the bottom is inclined.

Embodiment 10: A new type of LED flat lamp, as shown in Figs. 4.4 to 4.6, has a similar structure to Embodiment 9 except for:

The diffusion plate includes a bottom surface 213, a side surface 214, and a top surface 212, the top surface and the side surface are connected, the side surface and the top surface are connected, and the top surface is in close contact with the front surface of the light guide layer.

As shown in Figure 4.4, the sides and bottom of the diffuser are flat; in Figure 4.5, the sides of the diffuser are flat and the bottom is curved; Figure 4.6 The sides of the diffuser are flat and the bottom are inclined.

Embodiment 11: A new type of LED flat lamp, as shown in FIG. 4.7, has a similar structure to Embodiment 9, except that the bottom surface 213 and the side surface 214 are smoothly and smoothly connected into an arc shape or a spherical shape. As shown in Figure 3.1, the bottom surface and the side surfaces are smoothly transitioned into a curved surface.

Embodiment 12: A new type of LED flat lamp, as shown in Figures 5.1 and 5.2, has a similar structure to Embodiment 1, except that:

The lamp frame 1 is formed by connecting and enclosing a plurality of frame strips 11 end to end. The frame strip is a hollow structure having a closed cavity 118. The inner side of the frame strip extends to form a supporting portion 114. The closed cavity Located on the periphery of the supporting portion, the supporting portion is located on the front of the lamp frame, and the closed cavity includes a first cavity region 1121, an intermediate cavity region 1141, and a second cavity region 1131, the intermediate cavity The two sides of the zone are respectively connected to the first cavity zone and the second cavity zone, the back of the middle cavity zone is provided with a locking zone 116, the locking zone is provided with a plurality of screw holes 111, the screw holes The opening is located on the back of the light frame.

In this embodiment, the light guide structures in Embodiment 1 to Embodiment 12 may also be used.

In this embodiment, the provision of an integrated closed cavity can reduce the cost of aluminum material, meet the hardness requirements, and at the same time reduce the overall quality of the flat lamp; and only provide a closed cavity to simplify the manufacturing process.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made by the description and drawings of the present invention, or directly or indirectly used in other related technical fields, the same is true Included in the patent protection scope of the present invention.

Claims

A novel LED flat lamp, characterized in that the flat lamp includes a lamp frame (1), a light guide structure (2), a back plate (3) and a light source (4);

The light source, the light guide structure and the back plate are all mounted on the lamp frame;

The light guide structure includes a diffusion plate (21), a light guide layer (22) and a reflective layer (23), the back plate is located on the surface of the reflective layer, the light guide layer has two opposite surfaces and respectively Is a back surface and a front surface, the reflective layer is located on the back surface of the light guide layer, and the diffusion plate is located on the front surface of the light guide layer;

The light frame is one of the following two structures:

The light frame (1) is formed by connecting and enclosing several frame bars (11) end to end. The frame bar includes a first hollow body (112), a second hollow body (113), a connection area (115) and a support A supporting portion (114), a first cavity area (1121) is formed in the first hollow body, a second cavity area (1131) is formed in the second hollow body, and the first hollow body is located in the first At the periphery of two hollow bodies, the connection area connects the first hollow body and the second hollow body, the supporting portion extends from the second hollow body, and the second hollow body is located at the supporting portion Around the outer periphery, the supporting part is located on the front of the lamp frame, the connecting area is provided with a plurality of screw holes (111), and the opening of the screw hole is located on the back of the lamp frame;

Alternatively, the light frame (1) is formed by connecting a plurality of frame strips (11) end to end, the frame strip is a hollow structure with a closed cavity (118), and the inner side of the frame strip extends to form a support Part (114), the closed cavity is provided on the periphery of the supporting part, the supporting part is located on the front of the lamp frame, the closed cavity includes a first cavity region (1121), an intermediate cavity region (1141) ) And a second cavity area (1131), two sides of the intermediate cavity area communicate with the first cavity area and the second cavity area, and a locking area (116) is provided on the back of the intermediate cavity area , The locking area is provided with a plurality of screw holes (111), and the opening of the screw hole is located on the back of the lamp frame;

The diffusion plate is one of the following three structures:

The diffusion plate is a hollow tube with a cavity (211) in the middle and openings at both ends. The hollow tube has two opposite surfaces and is a top surface (212) and a bottom surface (213) of the diffusion plate respectively. One side of the light guide layer is a top surface, and the other side is a bottom surface, the top surface is a flat surface, and can be closely attached to the surface of the light guide layer (22);

Alternatively, the diffuser plate (21) is a thin plate with a cavity in the middle, the thin plate has two opposite surfaces and is a top surface (212) and a bottom surface (213) of the diffuser plate respectively, defining a side close to the light guide layer Is a top surface, and the other surface is a bottom surface, the top surface is a flat surface, and can be closely attached to the surface of the light guide layer (23);

Alternatively, the edge of the diffuser plate is bent or curved toward the side close to the light guide layer, and the edge of the diffuser plate is in contact with the front surface of the light guide layer to form between the diffuser plate and the light guide layer In the cavity (211), the diffusion plate includes a bottom surface and a side surface, and the side surface is directly connected to the front surface of the light guide plate or connected through the top surface.
The novel LED flat lamp according to claim 1, wherein the side surface is a flat surface, a curved surface or an inclined surface.
The novel LED flat lamp according to claim 1, wherein the bottom surface is a flat surface, a curved surface or an inclined surface.
The new LED flat lamp according to claim 1, wherein the first cavity area is higher than the second cavity area, and a shoulder (11211) is formed on the back of the first cavity area , The shoulder is flush with the back of the second cavity area.
The new LED flat lamp according to claim 1, characterized in that the outer side wall of the lamp frame is provided with a concave-convex structure (117).
The novel LED flat lamp according to claim 1, wherein the LED flat lamp is further provided with a buffer layer (5), and the buffer layer is provided between the light guide structure and the back plate.
The novel LED flat lamp according to claim 1, wherein the diffusion plate is a PS plate, a PMMA plate, a PC plate, a PET plate, a PP plate or a PE plate.
The novel LED flat lamp according to claim 1, wherein the buffer layer is a plastic or foam.
The new LED flat lamp according to claim 1, wherein the lamp frame is a metal lamp frame, a metal alloy lamp frame or a plastic lamp frame.
The novel LED flat lamp according to claim 1, wherein the light source is an LED lamp bar, an OLED lamp bar, an LED lamp bead or an OLED lamp bead.