WO2014194837A1

WO2014194837A1 - Led optical engine, led illumination lamp, and led illumination system

Info

Publication number: WO2014194837A1
Application number: PCT/CN2014/079237
Authority: WO
Inventors: 潘定国
Original assignee: Pan Dingguo
Priority date: 2013-06-05
Filing date: 2014-06-05
Publication date: 2014-12-11
Also published as: CN103322515B; CN103322515A

Abstract

An LED optical engine comprises a light source module having an LED array (103), a DC-DC constant-current driving module (106), a mechanical interface (101) disposed at the back side of a light-emitting surface of the light source module, and a DC power source interface (102) disposed at the center of the back side of the light-emitting surface of the light source module. The mechanical interface (101) comprises at least two bayonets (12), and a space is formed inside the mechanical interface (101). The DC-DC constant-current driving module (106) is provided in the space formed inside the mechanical interface (101). Also disclosed are an LED illumination lamp and an LED illumination system.

Description

LED light engine, LED lighting and LED lighting system

The present application relates to an LED light engine, and more particularly to a modular, standardized LED light engine, and an LED lighting and LED lighting system using the LED light engine. Background technique

Compared with traditional light sources, LED lighting has the characteristics of small size, energy saving, long life, high brightness and environmental protection. In the field of lighting, the application of LED lighting products is attracting the attention of the world. As a new type of green light source, LED is bound to be the future development trend. In the 21st century, it will enter the era of new lighting sources represented by LED.

In the PCT International Application No. PCT/CN2008/001534, filed on Aug. light. The circular lamp comprises: a circular light guide plate with an equal cross-section triangular microprism; a heat dissipation frame surrounding the light guide plate, a gap formed between the heat dissipation frame and the light guide plate to form an annular light groove; and a ring light embedded in the annular light groove The assembly, the ring light assembly is comprised of a plurality of light emitting diode (LED) patches, resistors, and circuit boards. The entire contents of this application are hereby incorporated by reference.

In the PCT International Application No. PCT7/CN2008/001535, filed on Aug. 26, 2008, the disclosure of which is incorporated herein by reference. The lamp comprises: an equal-section triangular microprism square light guide plate; a heat dissipation frame surrounding the light guide plate, a gap formed between the heat dissipation frame and the light guide plate to form an elongated light groove; and embedded in the elongated light groove A strip-shaped lamp assembly consisting of a plurality of light-emitting diode (LED) patches, resistors, and circuit boards. The entire contents of this application are hereby incorporated by reference.

On the basis of the above two applications, the applicant submitted the PCT International Application No. PCT/CN2010/072352 on November 3, 2011, in which the circular or square light guide plate of equal-section triangular microprism was modified to a variable cross section. Triangular microprisms are round or square light guides to provide better luminescence uniformity for the finished luminaire. The full text of this application is hereby incorporated by reference.

After implementing the above patent application, the applicant realized that to achieve LED lighting in the home environment, For large-scale applications in the public environment, etc., it is necessary to realize the modularization and standardization of LED lighting fixtures. Summary of the invention

It is an object of the present invention to provide a modular and standardized LED light engine, and an LED lighting fixture and an LED lighting system using the LED light engine, thereby realizing large-scale application of LED lighting in a home environment, an office environment, and the like.

According to an aspect of the present invention, an LED light engine is provided, comprising: a light source module including an LED array; a mechanical interface disposed on a back surface of a light emitting surface of the light source module, the mechanical interface including at least two bayonet ports Forming a space inside the mechanical interface; a DC power interface disposed at a center of a back surface of the light emitting surface of the light source module; and a DC-DC constant current driving module disposed in the space formed inside the mechanical interface .

According to another aspect of the present invention, there is provided an LED lighting fixture comprising the above LED light engine; and a lamp base comprising a mechanical interface and a DC power interface, respectively, and a mechanical interface and a DC power interface in the LED light engine Match.

According to still another aspect of the present invention, a flat panel LED light engine is provided, comprising: a square light source module having an LED array on one side thereof; a DC power interface disposed on an interface perpendicular to a side on which the LED array is disposed And a mechanical interface disposed adjacent to the interface end, the mechanical interface includes two notches; and a DC-DC constant current driving module disposed in the interface end.

According to still another aspect of the present invention, there is provided an LED lighting fixture comprising the above-described flat panel LED light fixture; and a panel lamp base comprising a mechanical interface and a DC power interface, and a mechanism in the flat panel LED light engine The interface and the DC power interface are matched separately.

According to still another aspect of the present invention, an LED lighting system is provided, comprising: a plurality of the above-mentioned LED lighting fixtures connected in parallel; and an AC-DC constant voltage driving module disposed outside the LED lighting fixture for communicating 220V or AC 110V is converted into DC low voltage for LED arrays and powers multiple LED lighting fixtures.

The invention has the advantages that the LED light engine of the invention has the advantages of slim shape, light weight, high versatility, easy installation and replacement, and is advantageous for large-scale application of LED lighting in a home environment, an office environment and the like. DRAWINGS

Figure 1A shows a cross-sectional view of an LED light engine in accordance with the present application.

FIG. 1B shows a top view of an LED light engine in accordance with the present application. 2 shows a circuit diagram of an LED lighting fixture in accordance with the present application.

3A shows a cross-sectional view of a modular power base of an LED lighting fixture base in accordance with the present application.

Figure 3B shows a bottom view of a modular power base of an LED lighting fixture base in accordance with the present application.

Fig. 4 is a cross-sectional view showing the structure of a ceiling lamp according to the present application.

Fig. 5A shows a cross-sectional view of the structure of the hanging lamp according to the present application.

Figure 5B illustrates a series of bayonet connections in accordance with the present application.

Figure 6 shows a cross-sectional view of a series of downlights in accordance with the present application.

Figure 7 shows a cross-sectional view of an LED integrated ceiling light in accordance with the present application.

Figure 8 shows a cross-sectional view and a partial detail enlarged view of an LED planar traffic light in accordance with the present application. Figure 9A shows a cross-sectional view of a flat panel light engine in accordance with the present application.

Figure 9B shows a top view of a flat panel LED light engine in accordance with the present application.

Figure 9C shows a mounting view of a flat panel LED light engine and panel base in accordance with the present application.

Figure 10 shows a schematic diagram of a home lighting system in accordance with the present application. detailed description

The present invention is directed to providing a modular and standardized LED light engine, as well as LED lighting and LED lighting systems using the LED light engine. The so-called "LED light engine" refers to a subsystem in an LED lighting fixture, which generally includes: a lighting module including an LED array, an LED driving power source, a power interface, a mechanical interface, and a heat dissipating mechanism.

Applicants realized that to implement a modular and standardized LED light engine and LED lighting and LED lighting systems using the LED light engine, the following improvements were needed for existing LED lighting fixtures:

1. Standardization of the mechanical interface of the LED light engine;

2. Standardization of the power interface of the LED light engine;

3. The driving power of the LED lighting fixture adopts the secondary drive. The first stage converts the commercial AC 220V or 110V into DC 12V or 24V (AC-DC), and the second stage converts the DC 12V or 24V into 12V or 24V constant current. (DC-DC);

4. LED light engine built-in DC-DC constant current drive module;

5. Construct an LED lighting system using the LED light engine of the built-in DC-DC constant current drive module. 1A shows a cross-sectional view of an LED light engine in accordance with the present application, and FIG. 1B shows a cross-sectional view according to the present application.

Top view of the LED light engine. To achieve LED lighting, it is necessary to realize the serialization of LED lighting fixtures. The premise of the columnization is that the LED light engine must be modular and standardized, that is, the only standard is adopted, so that the LED light engine can be adapted to various forms and types of lamps.

Figure 1A shows three sizes of LED light engines, which are 4 inches (outer diameter 120mm, light surface size 90), 6 inches (outer diameter 185 let, light surface size 144 let), 8 inches (outer diameter) 225 let, the luminous surface size is 182mm). Each light engine includes two interfaces, a standardized mechanical interface 101 and a standardized DC power interface 102 for coupling to a mechanical interface and a power interface on the base of the lighting fixture, respectively.

In the three illustrated LED light engines, the geometry of the base of the mechanical interface 101 is constant. For example, as shown in Figure 1A, the interface base has a positioning diameter of 70 mm. The size of the light source module of the LED light engine can be expanded to form a series of modules from 4 inch, 5 inch, 6 inch, 8 inch, 10 inch, 12 inch or even larger, and the positioning diameter of the interface base is always 70 mm. Those skilled in the art will appreciate that the size of 70 mm is exemplary in the present invention, and is not limiting, it may be larger, as long as it is smaller than the size of the LED light engine (e.g., 4 inches), or may be smaller, as long as A DC-DC constant current drive module 106 is housed therein.

The LED light engine of the present application also includes an LED light source module. The LED light source module comprises: an LED array 103, a light guide substrate 104, and an aluminum alloy heat dissipation cover 105. The mechanical interface 101 and the heat sink cover 105 are combined using an injection molding process.

The base of the mechanical interface 101 is stacked on the heat sink cover 105, and the DC power port 102 is mounted at the center of the interface base, that is, at the center of the heat sink cover 105. The DC power interface 102 can be a plug or socket for accessing a socket or plug on the base of the LED lighting fixture. The mechanical interface may include three bayonet ports 12, the center angles of the centers of the two bayonet bays being equal, 120 degrees, as shown in Figure 1B. When the LED light engine is mounted on the LED lighting fixture base, the DC power interface on the LED light engine is connected with the power interface on the lamp base, and the three bayonet ports on the LED light engine enter the bayonet seat on the lamp base. Three notches, then rotate the LED light engine clockwise or counterclockwise until you hear a "click" sound indicating the mechanical positioning of the bayonet is completed, while the DC power interface of the LED engine is powered by the power connector on the base of the fixture.

A mechanical interface comprising three bayonet is shown, but it will be understood by those skilled in the art that the mechanical interface may include at least two evenly spaced bayonet 12 integrally formed around the circumference of the ring. In addition, a bayonet elastic piece 11 can be formed on the bayonet 12 to be engaged with the bayonet mount on the base of the lamp.

The mechanical function of the bayonet shrapnel 11 of the present application is to mechanically position the bayonet 12 when it is engaged with the bayonet mount on the base of the lamp. When the bayonet 12 is rotated to reach the positioning port of the bayonet seat, the original compressed bayonet elastic piece 11 is released and ejected, so that the elastic piece 11 is just caught in the positioning port of the bayonet seat, so that the LED light engine does not rotate and disengage. The positioning of the bayonet seat ensures that the LED light engine does not fall off the base of the fixture. As for how to disengage the LED light engine from the bayonet mount on the base of the lamp, the following will be specifically described with reference to FIG. Description.

2 shows a circuit diagram of an LED lighting fixture in accordance with the present application. The ED array needs to be powered by a constant current source. The current constant current source is relatively large. If the constant current source is built in the LED light engine, the volume of the LED light engine will appear larger, and the LED light engine itself needs to be lighter and smaller. Replace the function of the module. Furthermore, different sizes of LED light engines require different drive power sources. Therefore, the driving circuit of the LED array in the present application adopts a two-stage driving. The first stage is to change the commercial AC 220V or 110V into a DC 12V or 24V low voltage. This work is done by a switching power supply (AC-DC), second. The stage is DC 12V or 24V converted to 12V or 24V constant current, this work is done by the constant current drive module (DC-DC). It will be understood by those skilled in the art that "12V" or "24V" as used herein is exemplary, and a voltage between 12V and 24V and a voltage higher or lower, for example, a voltage between 5V and 36V, may be employed. . As long as the input voltage requirements and heat dissipation requirements of the LED array can be met.

Returning to Fig. 1A, the present invention implants a DC-DC constant current drive module 106 into the abdominal cavity of the mechanical interface 101 of the LED light engine. In addition, optionally, the dimming and intelligent control module 107 can be implanted at a suitable position in the LED light engine, such as a gap between the light guide substrate 104 and the heat dissipation cover 105, thereby further improving the LED light. engine.

This design is driven by an AC-DC constant voltage power supply and a separate DC-DC constant current LED, allowing each LED light engine to deliver a separate DC constant current supply to the LED array. Since the DC-DC constant current drive module is small in size, a module with a 10W power is generally 10mm X 20mm X 15mm, so there is a surplus in the mechanical interface of the LED light engine of the present application.

3A shows a cross-sectional view of a modular power base of an LED lighting fixture base in accordance with the present application, and FIG. 3B shows a bottom view of the modular power base of the present application. The combined power base is composed of N independent sector power sockets 303 to form a full circle. The central portion of the combination power base includes a DC power interface 301, which may be a plug or socket for interfacing with a socket or plug on the LED light engine. The center of the combined power supply base is also provided with an n-shaped central junction box 302. One or more terminals are installed on each side of the n-sided shape, and one or more of the terminals are 220V. The line terminal is composed of 12V or 24V output terminals, the 220V input terminals are connected in parallel, and the 12V or 24V output terminals are also connected in parallel. The n-sided terminals of the center junction box 302 are all sockets, and the terminals on each side of the sector power supply are pins, and vice versa. Each fan-shaped power socket is provided with a power interface 304 at the center of the horizontally downward plane. The power interface has a thread on the outside. The power interface type and the power interface in the middle of the LED light engine described above belong to the same type, and can be plugged and unplugged. The threads are tightened and the power connector can be securely locked. The power interface 304 and the n-sided central junction box 302 - side low voltage 12V or 24V output wiring The terminals are connected in parallel. The power interface 304 on the plane of the fan-shaped power supply seat facing downward can be used as a hanging interface of the hanging lamp or a power output port of the hanging lamp.

The advantage of the combined fan-shaped power supply seat is that the central space and the peripheral space of the power supply base of the lamp base are used reasonably and effectively, so that the heat dissipation of the power supply of the fan-shaped power supply is optimized, that is, the physical structure is divided and combined separately and independently. In the supply and demand of the power supply, it is taken from the center and returned to the center (take AC220V return DC12V or DC24V. The DC12V or DC24V power supply can be output at the intermediate terminal, or can be output as a fan light at each sector power center terminal.

Additionally, the LED light fixture base can also include a mechanical interface 305. The mechanical interface 305 can be a bayonet mount that includes at least two indentations for mechanically positioning the LED light engine.

4 is a cross-sectional view showing the structure of a ceiling light according to the present application, in which a 4 inch, 6 inch, 8 inch LED light engine is mounted on a combined power base of an LED lighting fixture base.

As mentioned above, one feature of LED luminaires is the requirement for a constant current source. Each rated power LED luminaire requires a fixed DC constant current source. This application is a combination power supply technology that uses as little power supply as possible to supply DC constant current to different sizes of LED light source modules.

The technique of arranging combinations is used here to describe the technique. In the combined power base of the present application, n sector power sockets are used. Assuming that there are m types of power modules, such as 100mA, 200mA, 300mA, etc., the combined power base of the present application can provide a combination of power module combinations. Obviously, when we choose to combine several power modules of different specifications, we can get a lot of power output.

In the combined power base of the present application, the LED light engines of different sizes of the light source module are 10 inches, 12 inches, 16 inches, etc., to suit the larger lighting space.

In addition, the combined power base shown in Figures 3A and 3B can be equipped with a series of LED light engines to be used as ceiling lights, and can also be equipped with bayonet wiring to become a hanging light. Fig. 5A is a cross-sectional view showing the structure of a hanging lamp according to the present application, which is formed by mounting a bayonet wiring between a combined power supply base of an LED lamp base and an LED light engine. Figure 5B illustrates a series of bayonet connections in accordance with the present application.

In one embodiment of the invention, the two ends of the bayonet connection are a plastic bayonet having a diameter of 70 mm, and the bayonet connection is a double-insulated metal wire having an outer diameter of 8 mm, which can bear the weight. The length of the bayonet cable can be 1. 5M, 1M, 0. 8M, 0. 5M, etc., as shown in Figure 5B. The power terminal at the upper end of the bayonet wiring is a plug or socket (connected to a socket or plug on the power socket of the lamp base), and the power terminal at the lower end is a socket or plug (connected to a plug or socket on the LED light engine). The bayonet wiring can be formed by a contemporary injection molding process.

As with LED light engines, the power interface used for bayonet wiring is a standardized power interface, as A common common standard, we even specify a tolerance to ensure that the LED light engine, bayonet wiring, LED lighting base is unimpeded in the market.

Figure 6 shows a cross-sectional view of a series of downlights in accordance with the present application. The series of LED light engines and downlight power sockets work together to form 4-inch, 6-inch, 8-inch series downlights.

Figure 7 shows a cross-sectional view and a partial detail enlarged view of an LED integrated ceiling light according to the present application. One type of luminaires installed on the slabs in the system luminaires are also widely used, such as cabinet lights, bathroom ceiling lights, and ceiling lamps with light steel keels and plasterboard or plastic aluminum panels. As shown in Fig. 7, a light steel keel 701 is fitted to the ceiling of the gypsum board or the plastic aluminum plate 703 on the flat top 701, and an LED integrated ceiling lamp 704 is mounted on the gypsum board or the plastic aluminum board 703. The drive power base can be connected to the external power plug with the plug-in terminal and the lock nut 705 on the side of the base of the lamp. It is compact and easy to install.

Figure 7 also shows in detail a fast wire release mechanism that disengages the LED light engine from the base of the lamp. The outer circumference of the LED light engine of the present application ranges from 100 mm to 400 mm. If a rigid tool is used to access the shrapnel on the outer periphery of the light engine to release it, it is inconvenient to operate due to the long radius distance. Therefore, the present application contemplates a quick release mechanism. The quick release mechanism is composed of a fast wire base 710, a rigid fast wire bar 711, a soft core fast wire 712, a sheath 713 for protecting the soft core fast wire, a button base 714 and a button 715. When using, just press the fast line button 715 to transmit the pressure of the button spring to the soft core fast line, the soft core fast line moves toward the pressure direction, and push the rigid fast bar to move in the fast line seat. The rigid fast bar end pushes the bayonet spring (11 in Figure 1B), the bayonet spring is unhooked, and the bayonet is rotated. At this time, the LED light engine can be rotated to disengage it from the lamp base.

Figure 8 shows a cross-sectional view and a partial detail enlarged view of an LED planar traffic light in accordance with the present application. Traditional traffic lights have been replaced and modern LEDs have been used as light sources, saving energy and extending the life of traffic lights. Some progress has been made, but as a planar light source, multiple LED arrays are needed to form a circular plane. The layout is bound to cause uneven heat dissipation on the surface of a PCB. The temperature in the middle of the circular plane is higher than the circumference. The uneven temperature will affect the life of the LED. The LED appears as a point light source in the traffic signal. As a traffic light acting as a display screen, the user is the general public, and the attention is made at the intersection. Therefore, the light quality of the traffic light surface is as uniform and soft as possible. People have a peaceful psychological feeling and reflect the peace and harmony of a civilized society.

As shown in Fig. 8, the traffic light of the present application employs the modular LED light engine of the present application. As mentioned above, the LED light engine uses a standardized mechanical interface (positioning diameter of 70 mm) and a power interface, and includes a DC-DC constant current module. The LED light engine uses a color temperature of 6000K-8000K.

In the traffic light of the present application, a red, green, and yellow organic glass 803 is disposed between the inorganic flat glass 801 and the light guiding substrate 802 of the LED light engine. BP, added a color in front of the above LED light engine (red, Yellow, green) plexiglass 803 and a piece of inorganic flat glass 801 and frame 804, for example 5 mm thick. The frame 804 is secured to the LED light engine by fasteners 805 and the flat glass 801 is glued to the frame 804 by an adhesive 806.

The traffic light of the present application can improve the technical performance, and adopts a standard type of bayonet, which will greatly promote the generalization and standardization of traffic lights, and has a certain effect on the modernization of traffic facilities. The traffic light of this application uses 24VDC voltage. The light distribution of the surface of the applicant's traffic light is uniform.

The above inventive concept of the present application is not limited to a circular panel lamp, and can also be applied to LED lamps of other geometric shapes. The following description will be made by taking a square panel lamp as an example.

Figure 9A shows a cross-sectional view of a flat panel light engine in accordance with the present application. Figure 9B shows a top view of a flat panel LED light engine in accordance with the present application. Figure 9C shows an installation view of a flat panel LED light engine and a lamp base in accordance with the present application.

As shown in FIGS. 9A and 9B, the flat panel LED light engine of the present application includes a light guiding substrate 901, an LED array 901 disposed on one side of the light guiding substrate, a heat dissipation strip 903 mounted on the same side of the LED array, a cover 904, and a reflection. Liner 905. A rubber strip 906, a module base 907, and a fixed frame 908 are disposed on the upper and lower sides of the flat panel light engine. In addition, a spring strip 909 can be placed between the heat sink on one side of the LED array and the module base.

As shown in Fig. 9B, the two ends of the flat LED light engine perpendicular to the side on which the LED array is mounted are the interface end 910 (left side in Fig. 9B) and the side end 911 (right side in Fig. 9B). As shown in Figures 9B and 9C, the interface end 910 - side includes two power connectors 912 for interfacing with a power interface 917 on the lamp base 916. Power interface 912 can be a socket and power interface 917 can be a plug, and vice versa. In addition, a DC-DC constant current power supply module 913 can be provided in the interface side, and an intelligent control module can be optionally provided.

As shown in Figs. 9B and 9C, two notches are provided near the interface end of the upper and lower fixed frame 908 for engaging and fixing with the lamp base. At the same time, two latch buttons 918 are included at the position of the lamp base 916 corresponding to the two notches, and the latch button 918 is pressed to release the LED light engine from the lamp base. The lamp base is connected to an external power source via a power terminal 919.

In the present embodiment, the geometry of the lamp base 916 is constant, for example, 100 mm long. The length of the flat LED light engine is expandable from 135mm, 200mm, 300mm, 400mm, 550mm, resulting in a series of LED light engines. The width of the flat LED light engine, i.e., the size of the interface end 910 that interfaces with the lamp base 916, is constant, for example, always 100 mm.

The LED light engine of the built-in DC-DC constant current driving module of the present application can be widely applied in various lighting system environments. Home lighting or office lighting is a typical example of a lighting system. Figure 10 shows a schematic diagram of a home lighting system employing an LED light engine with a built-in DC-DC constant current drive module in accordance with the present application. This embodiment and The embodiment shown in Figures 3A and 3B of the present application is slightly different. In this embodiment, the AC-DC constant voltage driving module is not separately disposed in the base of each LED lamp, but the AC-DC constant voltage driving module can be coupled to the lighting line output end of the household distribution box, or directly It is coupled to the interior of the household distribution box to obtain, for example, 24V DC lighting power, which is transmitted to the kitchen, bathroom, living room, bedroom, etc., respectively.

In the present application, since the LED light engine has a built-in DC-DC constant current driving module, each LED lamp can obtain the required driving current, and each lamp has a long life, and the failure of any one lamp does not affect other. The use of luminaires, the efficiency of each lamp's DC-DC drive is 95%.

The preferred embodiments of the present application have been described in detail above, but the application is not limited to the embodiments. It is to be understood that various modifications and changes can be made by those skilled in the art in the form of the appended claims.

Claims

Rights request

1. An LED light engine, characterized by including:

Light source module including LED array;

A mechanical interface is provided on the back of the light-emitting surface of the light source module, the mechanical interface includes at least two bayonet openings, and a space is formed inside the mechanical interface;

A DC power interface provided at the center of the back of the light-emitting surface of the light source module; and

The DC-DC constant current drive module is arranged in the space formed inside the mechanical interface.

2. The LED light engine of claim 1, wherein the structure and size of the mechanical interface remain unchanged for light source modules of different sizes.

3. The LED light engine of claim 2, wherein the size of the base of the mechanical interface is smaller than the size of the light source module and is sufficient to accommodate the DC-DC constant current drive module.

4. The LED light engine of claim 1, wherein the light source module further includes: a light guide substrate and an aluminum alloy heat dissipation cover, wherein the mechanical interface and the DC power interface are provided on the aluminum Alloy heat dissipation cover.

5. The LED light engine of claim 4, further comprising a dimming and intelligent control module disposed in the gap between the light guide substrate and the aluminum alloy heat dissipation cover.

6. The LED light engine of claim 1, wherein a bayonet elastic piece for mechanical positioning is provided on one of the at least two bayonet ports.

7. An LED lighting fixture, characterized by including:

The LED light engine as claimed in any one of claims 1 to 6; and

The lamp base includes a mechanical interface and a DC power interface, respectively matching the mechanical interface and the DC power interface in the LED light engine.

8. The LED lighting fixture as claimed in claim 7, characterized in that, the base of the fixture includes a combined power base, and the combined power base includes an n-sided central junction box and n fan-shaped power bases for connecting the Convert AC 220V or AC 110V into DC low voltage suitable for LED arrays.

9. The LED lighting fixture according to claim 8, characterized in that, a power interface is provided at the center of the horizontal downward plane of each of the n fan-shaped power sockets, serving as the hanging interface and power output of the hanging lamp. mouth.

10. The LED lighting fixture as claimed in claim 8, characterized in that when there are m power supply modules of different specifications and models, the combined power base can provide a combination of power supply modules.

11. The LED lighting fixture according to claim 7, wherein the fixture base includes a fast wire release mechanism for detaching the LED light engine from the lamp base, wherein when the fast wire release mechanism is operated During the mechanism, the bayonet spring piece on the LED light engine is pushed open, so that the LED light engine is detached from the base of the lamp.

12. The LED lighting fixture according to claim 7, further comprising a bayonet connection, the mechanical interface and the power interface at the upper end of the bayonet connection are respectively connected to the mechanical interface and the power interface on the base of the lamp. Matching, the mechanical interface and power interface at the lower end of the bayonet connection are respectively matched with the mechanical interface and power interface on the LED light engine.

13. The LED lighting fixture of claim 7, wherein red, yellow, green organic glass, inorganic flat glass and a frame are provided on the LED light engine to form a traffic light.

14. A flat-panel LED light engine, characterized by including:

A square light source module, one side of which includes an LED array;

A DC power interface arranged on an interface end perpendicular to the side on which the LED array is arranged; and a mechanical interface provided close to the interface end, the mechanical interface including two notches; and a mechanical interface provided in the interface end. DC-DC constant current drive module.

15. An LED lighting fixture, characterized by including: The flat LED light engine as claimed in claim 14; and

The panel light base includes a mechanical interface and a DC power interface, which are respectively matched with the mechanical interface and DC power interface in the flat-panel LED light engine.

16. An LED lighting system, characterized by including:

Multiple parallel-connected LED lighting fixtures as claimed in claim 7 or 15; and

The AC-DC constant voltage drive module provided outside the LED lighting fixture is used to convert AC 220V or AC 110V into a DC low voltage suitable for the LED array and provide power to multiple LED lighting fixtures.