A serially connectable single-end DC low-voltage surface array LED support lamp

Abstract

The application discloses a kind of single-ended DC low-voltage surface array LED support lamps that can be concatenated, belong to lighting technical field, solve the problems of large consumption of existing LED support lamp adapter, poor adaptability of new energy power supply, high line loss and large amount of lamp beads.The support lamp includes aluminum profile conductive shell, strip-shaped LED surface array circuit board, positive and negative power input copper stud, connecting sheet, terminal conductive sheet and LED lens;The circuit board is laid on the front of the shell, integrated with widened and thickened positive and negative circuits, the copper stud is separated by an insulating gasket and then passes through the shell, multiple sets of lamp bodies are connected by the connecting sheet to realize structure and circuit concatenation, the terminal negative copper stud is in conduction with the shell, and the shell is used as the negative conductor to realize 12V-48V single-ended DC low-voltage power supply;The arrangement of lamp beads is matched with the width of the circuit board and the size of the lens, and the lens expands the light-emitting surface to compensate for the dark area between the lamp beads.The application simplifies the power supply circuit by 50%, improves the energy utilization efficiency by more than 30%, reduces the amount of lamp beads by more than 50%, and achieves 95% consistency in brightness, directly adapts to solar energy storage and other new energy DC power supply, supports linear concatenation and double-row parallel installation, is convenient and stable to install, is suitable for indoor and outdoor off-grid new energy lighting, industrial plants, municipal roads and other scenes, and has significant industrial practicality.

Description

1. Technical Field

[0001] This invention belongs to the field of lighting technology, specifically relating to the structural design of LED lighting equipment, and particularly to a single-ended DC low-voltage LED array bracket light suitable for new energy DC low-voltage power supply scenarios, which can be used in series with multiple sets. 2 Background Technology

[0002] In the field of indoor and outdoor lighting, LED bracket lights are widely used due to their energy-saving and long lifespan characteristics. Most existing LED bracket lights rely on centralized AC power supply, and each bracket light needs to be equipped with an independent power adapter to convert the AC voltage of the grid into DC voltage suitable for the LED chips. At the same time, the adapter performs voltage reduction and current limiting. However, the voltage reduction and current limiting process of the adapter will cause unavoidable energy loss, resulting in low energy utilization efficiency of the entire lamp. Moreover, when used in batches, traditional bracket lights use a two-wire power supply bus to achieve parallel power supply. Each lamp body requires an independent two-wire power supply circuit, which not only makes the power supply circuit structure complex, but also significantly increases the line transmission loss.

[0003] With the development of new energy technologies, off-grid DC power supply methods such as solar charging and energy storage are increasingly widely used in the lighting field. Energy storage batteries have the technical advantages of low internal resistance and instantaneous output of large current. However, existing LED bracket lights still use the traditional AC / DC adapter power supply mode, which cannot be directly adapted to the DC low-voltage power supply characteristics of energy storage batteries, and cannot give full play to their high current output advantages, and still have the problem of low power supply efficiency.

[0004] To enhance visual lighting effects, area-array LED light sources are used in bracket lamp designs. These lights achieve surface emission by uniformly arranging multiple LED beads on the same plane, leveraging the physiological characteristics of human visual perception to achieve superior perceived brightness with the same energy input. However, the array arrangement of area-array LED light sources increases wire losses between the LED beads. Furthermore, the more LED beads there are, the greater the operating current, and the line losses increase exponentially, becoming a core technical challenge in the design of area-array LED bracket lamps. Simultaneously, existing area-array LED bracket lamp designs do not match the LED bead arrangement with the optical lens design. To ensure continuous light emission, the LED beads must be densely arranged, increasing manufacturing costs and further boosting energy consumption.

[0005] In summary, existing LED bracket lights suffer from technical defects such as high energy loss of power adapters, poor compatibility with new energy DC power supplies, high circuit loss of area LED arrays, complex parallel power supply circuits with high transmission loss, and large number of LED chips with high energy consumption. There is an urgent need to propose a new LED bracket light structure to solve the problems existing in the above-mentioned technologies. 3. Summary of the Invention

[0006] 3.1 Purpose of the Invention

[0007] To address the aforementioned shortcomings of existing technologies, the present invention aims to provide a series-connectable single-ended DC low-voltage LED array bracket light, solving the problems of high adapter losses, poor adaptability to new energy power supplies, high line losses in the array LEDs, complex and high-loss parallel power supply circuits, and large LED chip usage in traditional bracket lights. This invention enables series connection of multiple bracket lights with single-ended DC low-voltage power supply, simplifies the power supply circuit structure, reduces overall line losses, and improves the energy utilization efficiency of the lamp. Simultaneously, it optimizes the luminous effect of the array LEDs, ensuring continuous light strip illumination while reducing the number of LED chips, making it suitable for new energy DC low-voltage power supply scenarios such as solar charging and energy storage.

[0008] 3.2 Technical Solution

[0009] To achieve the above-mentioned objectives, this invention provides a series-connectable single-ended DC low-voltage LED array bracket lamp, comprising a bracket lamp housing (3), a strip LED array circuit board (4), a circuit board negative electrode circuit (5), a circuit board positive electrode circuit (6), LED lamp bead negative electrode pads (7), LED lamp bead positive electrode pads (8), LED lamp beads (9), negative electrode power pads (2), positive electrode power pads (10), negative electrode power input copper studs (12), positive electrode power input copper studs (15), convex insulating gaskets (11), copper nuts (13), power electrode connecting pieces (16), bracket lamp body connecting pieces (17), end electrode and lamp body connecting conductive pieces (20), and LED lenses (21).

[0010] The strip LED array circuit board (4) is laid on the flat mounting surface of the front of the bracket lamp housing (3), and the two are fixedly connected by high temperature resistant silicone backing. The strip LED array circuit board (4) integrates a circuit board negative electrode circuit (5) and a circuit board positive electrode circuit (6) that are mutually insulated and isolated. The circuit board has corresponding LED lamp bead negative electrode pads (7) and LED lamp bead positive electrode pads (8) adapted to the LED lamp beads (9). The LED lamp bead negative electrode pads (7) are connected to the circuit board negative electrode circuit (5), and the LED lamp bead positive electrode pads (8) are connected to the circuit board positive electrode circuit (6). The positive and negative electrodes of the LED lamp beads (9) are respectively soldered to the LED lamp bead positive electrode pads (8) and LED lamp bead negative electrode pads (7).

[0011] One end of the strip LED array circuit board (4) has a negative power pad (2) and a positive power pad (10). The negative power pad (2) is connected to the negative circuit (5) of the circuit board, and the positive power pad (10) is connected to the positive circuit (6) of the circuit board. The negative power input copper stud (12) is soldered on the negative power pad (2), and the positive power input copper stud (15) is soldered on the positive power pad (10).

[0012] The bracket lamp housing (3) has through holes at the positions corresponding to the negative power input copper stud (12) and the positive power input copper stud (15). The cylindrical ends of the negative power input copper stud (12) and the positive power input copper stud (15) are exposed to the back of the bracket lamp housing (3) through the through holes. A convex insulating gasket (11) is fitted between the negative power input copper stud (12) and the positive power input copper stud (15) and the inner wall of the through hole of the bracket lamp housing (3) to achieve insulation isolation between the copper stud and the bracket lamp housing (3). The exposed cylindrical ends of the copper stud are screwed with copper nuts (13) to fix the copper stud to the bracket lamp housing (3).

[0013] The bracket lamp housing (3) is integrally formed from aluminum profile with good conductivity. Multiple bracket lamps are rigidly connected and fixed in series through bracket lamp body connecting piece (17). The copper studs are connected in series through power electrode connecting piece (16). The negative power input copper stud (12) of the last bracket lamp is connected to the bracket lamp housing (3) through the end electrode and lamp body connecting conductive piece (20). The bracket lamp housing (3) serves as the negative conductor of the power supply circuit, so that the connected lamp group can achieve single-end DC low voltage power supply.

[0014] The LED lens (21) is mounted on the light-emitting front end of each LED bead (9) and is fixedly connected to the bracket lamp housing (3) to expand the light-emitting surface of the LED bead (9).

[0015] As a preferred technical solution of the present invention, both the negative circuit (5) and the positive circuit (6) of the circuit board adopt the design method of increasing the line width and increasing the copper foil thickness. The line width is not less than 9.5mm and the copper foil thickness is not less than 35μm, thereby reducing the line internal resistance and transmission loss of the strip LED array circuit board (4).

[0016] In a preferred embodiment of the present invention, the LED beads (9) on the strip LED array circuit board (4) are arranged at equal intervals along the length direction, and the arrangement interval is consistent with the width of the strip LED array circuit board (4) and matches the outer diameter of the LED lens (21); the LED lens (21) expands the point light-emitting surface of the LED beads (9) into a surface light-emitting surface consistent with the lens surface, making up for the dark area formed by the gap between the beads, so that the bracket lamp forms a continuous light strip light-emitting effect.

[0017] As a preferred technical solution of the present invention, the front of the bracket lamp housing (3) is provided with a limiting boss for positioning the strip LED array circuit board (4) and preventing the circuit board from shifting; the back of the bracket lamp housing (3) is a flat connecting surface for fixing the copper nut (13) and the power electrode connecting piece (16); both sides of the bracket lamp housing (3) are provided with long strip-shaped cavities, and the bracket lamp body connecting piece (17) is inserted into the cavity and screwed to the bracket lamp housing (3) by fixing screws (18) to realize the series connection of multiple bracket lamp housings.

[0018] As a preferred technical solution of the present invention, the negative power input copper stud (12) and the positive power input copper stud (15) are both integral copper structures with a flat end as a welding surface and an external thread at the stud end, which is compatible with the copper nut (13); the power electrode connecting piece (16) is a thin copper sheet with a connecting hole adapted to the copper stud, which is used to realize the circuit connection of the copper studs of adjacent bracket lamps.

[0019] As a preferred technical solution of the present invention, the bracket lamp body connecting piece (17) and the end electrode and lamp body connecting conductive piece (20) are all made of metal conductive material. The bracket lamp body connecting piece (17) is provided with a lamp body connecting plate female screw hole (19) to match the fixing screw (18) and realize the structural rigidity of the lamp group after series connection. The two ends of the end electrode and lamp body connecting conductive piece (20) are respectively tightly attached to the negative power input copper stud (12) and the bracket lamp housing (3) to realize circuit conduction.

[0020] 3.3 Beneficial Effects

[0021] The single-ended DC low-voltage area array LED bracket light of the present invention, through reasonable structural design and circuit optimization, has the following advantages compared with the prior art:

[0022] 1. Achieve single-end series power supply, simplify the power supply circuit and greatly reduce losses: The bracket lamp is designed as an independent unit that can be connected in series. After multiple sets of lamps are connected in series, only the first set of lamps needs to achieve single-end DC low-voltage power supply. Compared with the traditional parallel power supply of two independent circuits, the power supply circuit structure is simplified by 50%. At the same time, the aluminum profile bracket lamp housing (3) is used as the negative conductor of the power supply circuit. The aluminum profile has low internal resistance, which greatly reduces the line transmission loss and improves the energy utilization efficiency of the entire lamp group by more than 30%.

[0023] 2. Directly adapts to new energy DC low-voltage power supply, eliminating adapter losses: It abandons the traditional AC / DC power adapter and directly adapts to the DC low-voltage power supply characteristics of energy storage batteries such as solar charging energy storage. It fully leverages the technical advantages of energy storage batteries with low internal resistance and instantaneous large current output, completely eliminating the energy loss of adapter voltage reduction and current limiting. The energy utilization efficiency in off-grid power supply scenarios is close to 100%.

[0024] 3. Optimize the LED array light-emitting design to reduce the number of LED beads and reduce energy consumption: By matching the spacing of LED beads (9) with the width of the circuit board and the size of the LED lens (21), the light-emitting surface is expanded by utilizing the optical refraction function of the lens to make up for the dark area between the LED beads. Under the premise of ensuring the continuous light strip light-emitting effect, the number of LED beads is reduced by more than 50%, which not only reduces the manufacturing cost of the lamp, but also greatly reduces the energy consumption of the whole lamp.

[0025] 4. Reduce circuit board line loss and improve the brightness consistency of LED beads: By increasing the line width of the positive and negative circuits of the circuit board and increasing the copper foil thickness, the internal resistance of the strip LED array circuit board (4) is effectively reduced. At the same time, the current distribution difference of multiple parallel LED beads (9) is improved, and the brightness consistency of the LED beads is increased to more than 95%, thus optimizing the overall visual lighting effect.

[0026] 5. High integration of structural design, taking into account both installation convenience and usage stability: The bracket lamp housing (3) has the dual functions of structural fixation and circuit conductivity. The side cavity design avoids interference of the connectors on the light emission effect and electrode connection. The cooperation of copper studs and copper nuts realizes the quick installation and series connection of the lamp body. The bracket lamp body connecting piece (17) ensures the structural rigidity of the lamp group after series connection. The power electrode connecting piece (16) ensures the smooth conductivity of the circuit connection. It is convenient to install and has high usage stability.

[0027] 6. Adaptable to various installation scenarios and highly practical: It can realize the linear series installation of multiple lamp bodies, and can also realize the parallel installation of double rows by rotating the lamp body. When the double row is installed, a closed power supply circuit is formed directly through the power electrode connection piece (16), without the need for the shell to conduct electricity, adapting to different indoor and outdoor lighting installation needs. 4. Attached Figure Descriptions

[0028] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The accompanying drawings are only used to illustrate the core structure of the present invention and the connection relationship of each component. The components are not drawn to actual scale.

[0029] Figure 1 This is a front structural diagram of the single-ended DC low-voltage array LED bracket lamp that can be connected in series according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the back structure of the series-connectable single-ended DC low-voltage LED bracket lamp according to an embodiment of the present invention;

[0031] Figure 3 This is a side view of the single-ended DC low-voltage LED array bracket lamp that can be connected in series according to an embodiment of the present invention;

[0032] Figure 4This is a schematic diagram of the front structure of the two sets of single-ended DC low-voltage LED bracket lights that can be connected in series according to an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the back structure of the two sets of single-ended DC low-voltage LED bracket lights connected in series according to an embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the series connection method of two sets of single-ended DC low-voltage area array LED bracket lights described in an embodiment of the present invention;

[0035] Figure 7 This is a cross-sectional schematic diagram of the connection structure of the series-connectable single-ended DC low-voltage LED bracket lamp according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the application structure of the series-connectable single-ended DC low-voltage area array LED bracket light strip lens described in an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1- Single-ended DC low-voltage LED array bracket light that can be connected in series; 2- Negative power supply pad; 3- Bracket light housing; 4- Strip LED array circuit board; 5- Negative circuit of circuit board; 6- Positive circuit of circuit board; 7- Negative pad of LED bead; 8- Positive pad of LED bead; 9- LED bead; 10- Positive power supply pad; 11- Convex insulating gasket; 12- Negative power input copper stud; 13- Copper nut; 14- Bracket connection through hole; 15- Positive power input copper stud; 16- Power electrode connection piece; 17- Bracket light body connection piece; 18- Fixing screw; 19- Nut hole of light body connection plate; 20- Conductive piece connecting end electrode and light body; 21- LED lens. 5. Detailed Implementation

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. The described embodiments are only preferred embodiments of the present invention and are not intended to limit the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0040] Unless otherwise specified, the “welding,” “screwing,” “adhesion,” and “fixing” mentioned in this invention are all conventional processes in the field of lighting equipment manufacturing. The single-ended DC low-voltage power supply refers to the fact that after multiple sets of bracket lamps are connected in series, only a DC low-voltage power supply needs to be connected between the positive power input copper stud (15) of the first set of lamps and the bracket lamp housing (3) to achieve synchronous power supply for all connected lamps. The single-string full parallel refers to the circuit connection method of the LED beads (9) being a full parallel arrangement based on a single series connection, which is suitable for the characteristics of DC low-voltage high-current power supply. The DC low-voltage power supply voltage involved in this invention is 12V-48V, which is suitable for the power supply voltage of conventional energy storage batteries.

[0041] 5.1 Overall Structure Description

[0042] The single-ended DC low-voltage LED bracket lamp of the present invention uses a conductive bracket lamp housing (3) made of aluminum profile as the basic carrier. A strip LED array circuit board (4) is laid on the front side. Positive and negative circuits and lamp bead pads are integrated on the circuit board. After the LED lamp beads (9) are soldered, they are equipped with LED lenses (21) to realize the array light emission. Positive and negative power input copper studs are soldered at the power pads of the circuit board. The copper studs are isolated by convex insulating pads (11) and then pass through the back of the housing as power connection terminals. Multiple lamp bodies are rigidly connected in series through bracket lamp body connecting pieces (17). The copper stud circuits are connected in series through power electrode connecting pieces (16). The negative copper stud of the last lamp body is connected to the housing through the end electrode and the lamp body connecting conductive piece (20). The housing is used as the negative conductive circuit to realize the single-ended DC low-voltage power supply of the entire lamp body.

[0043] 5.2 Specific Production Steps

[0044] S1. Fabrication of strip LED array circuit board (4): Epoxy fiberglass copper-clad substrate is selected as the substrate and PCB fabrication process is used to fabricate strip LED array circuit board (4). The negative circuit (5) of the circuit board is fabricated on one side and the positive circuit (6) of the circuit board is fabricated on the other side. The positive and negative circuits are designed with insulation and isolation, and the spacing is not less than 0.6mm. The negative power pad (2) and the positive power pad (10) are fabricated simultaneously at one end of the circuit board, and the other end is a closed end. The negative and positive power pads of single-string fully parallel LED beads (7) and the positive power pads of LED beads (8) are fabricated at equal intervals along the length of the circuit board. The number of pads is designed according to the length of the circuit board.

[0045] Specific example: Design a bracket lamp with a length of 3 meters and a diameter of 22mm LED lens (21). The width of the strip LED array circuit board (4) is set to 22mm and the length is set to 3000mm. The center distance between adjacent LED bead pads is set to 22.05mm. A total of 136 sets of LED bead pads are made. The distance between the positive and negative power supply pads and the corresponding ends of the circuit board is 11.25mm. The line width of the positive and negative circuits of the circuit board is set to 9.5mm, the copper foil thickness is set to 70μm, and the distance between the positive and negative circuits and the edge of the circuit board is greater than 0.6mm.

[0046] S2. Soldering LED beads (9): Solder the negative electrode of the LED bead (9) to the negative electrode pad (7) of the LED bead, and the positive electrode to the positive electrode pad (8) of the LED bead. The soldering adopts the reflow soldering process to ensure that there is no false soldering, false soldering, or bridging at the soldering point. After the soldering is completed, power-on test is performed to confirm that all LED beads (9) can light up normally.

[0047] S3, Fixing the strip LED array circuit board (4): Apply high-temperature resistant silicone backing to the back of the strip LED array circuit board (4), peel off the release paper, and then precisely attach the circuit board to the flat mounting surface on the front of the bracket lamp housing (3). The circuit board is positioned by the limiting boss, and the circuit board is pressed to fit tightly with the housing. The silicone backing is used to fix the two together. The thermal conductivity of the aluminum profile housing can realize the heat dissipation of the LED beads (9) when they are working.

[0048] S4. Prepare the positive and negative power supply connection terminals:

[0049] ① Negative power supply connection end: The flat end of the negative power input copper stud (12) is welded to the negative power pad (2) using wave soldering process to ensure that the welding point is conductive; the convex insulating gasket (11) is fitted onto the cylindrical end of the negative power input copper stud (12) so that the cylindrical end passes through the preset through hole of the bracket lamp housing (3) and is exposed to the back side; an insulating flat gasket is added to the cylindrical end of the copper stud on the back side of the housing, and the copper nut (13) is tightened to fix the negative power input copper stud (12) and ensure that the copper stud is completely insulated from the housing;

[0050] ② Positive power supply connection end: Using the same process as the negative power supply connection end, the positive power input copper stud (15) is welded to the positive power pad (10), and after being isolated by the convex insulating gasket (11), it passes through the back of the housing and is fixed by tightening the copper nut (13) to ensure that the copper stud is completely insulated from the housing.

[0051] S5. Install LED lens (21): After the bracket lamp with the circuit board fixed and copper stud welded is tested for power-on, and all LED beads (9) are confirmed to be emitting light normally and with consistent brightness, install an LED lens (21) that is compatible with the LED bead at the front end of each LED bead (9), match the positioning end of the LED lens (21) with the preset positioning groove of the bracket lamp housing (3), and use transparent high temperature resistant silicone to fix the lens to the housing to ensure that the lens and the LED bead are accurately aligned without offset or skew.

[0052] 5.3 Serial connection usage steps

[0053] S6. Series connection and fixing of lamp housing: Insert a metal lamp housing connecting piece (17) into the cavity on the side of the housing on the negative power supply side of each set of bracket lamps. Pass the fixing screw (18) through the bracket connection through hole (14) on the lamp housing (3) and tighten it with the lamp housing connecting plate female screw hole (19) on the lamp housing connecting piece (17) so that the connecting piece fits tightly with the housing. According to the actual lighting needs, connect multiple sets of bracket lamps in sequence in the above manner to complete the rigid series connection and fixing of the lamp housing, and ensure the overall structural stability of the lamp group after series connection.

[0054] S7. Series connection of lamp body circuit: The connecting holes of the copper power electrode connecting piece (16) are respectively fitted onto the negative power input copper stud (12) of the previous set of bracket lamps and the positive power input copper stud (15) of the adjacent set of bracket lamps. Tighten the copper nut (13) so that the power electrode connecting piece (16) and the copper stud are tightly fitted to realize the series connection of the adjacent lamp bodies. Complete the circuit connection of all the series lamp bodies in the above manner to ensure that the circuit conduction is smooth.

[0055] S8. Construct a single-ended power supply circuit: Loosen the copper nut (13) on the negative power input copper stud (12) of the last bracket lamp, put it into one end of the conductive piece (20) connecting the end electrode and the lamp body, and tighten the copper nut (13) so that the conductive piece and the copper stud are tightly attached; tightly attach the other end of the conductive piece (20) connecting the end electrode and the lamp body to the back of the bracket lamp housing (3) and fix it with screws to realize the circuit connection between the negative power input copper stud (12) and the bracket lamp housing (3); using the conductivity of the aluminum profile bracket lamp housing (3) and the metal bracket lamp body connecting piece (17), a negative conductive circuit from the end lamp body to the first set of lamp bodies is formed, so that the entire set of series lamp bodies forms a closed circuit with single-ended power supply.

[0056] S9. Power supply: Connect a 12V-48V DC low-voltage power supply between the positive power input copper stud (15) of the first set of bracket lights and the bracket light housing (3). The entire set of bracket lights connected in series can then light up synchronously and normally. If you need to turn it off, simply disconnect the DC low-voltage power supply.

[0057] 5.4 Double-row parallel installation method

[0058] If the actual lighting requirement is a double-row parallel installation, rotate the bracket lamp that needs to be turned back by 180°, still achieve the series connection and fixation of the housing through step S6, and achieve the series connection of the copper stud circuit through step S7, so that the circuit of the double-row lamp body is connected in series in sequence; finally, the positive and negative power input copper studs of the first and last bracket lamps are converged to the same side, and DC low voltage power supply is directly connected between the positive copper stud and the negative copper stud at the convergence end to form a closed power supply circuit; this installation method does not require the bracket lamp housing (3) as a conductive circuit, and is suitable for large-area, double-row lighting requirements.

[0059] 6. Industrial Applicability

[0060] The single-ended DC low-voltage LED bracket light of this invention uses conventional materials and standardized accessories from the lighting equipment field for all its components. The manufacturing process is based on conventional processes in the field, such as PCB board making, welding, screwing, and gluing. No special production equipment is required, and it can achieve large-scale and standardized mass production. It is directly compatible with new energy DC low-voltage power supply scenarios, which can significantly reduce the line loss and energy consumption of the lighting system. It is also easy to install and adaptable to various lighting scenarios. It has broad application prospects in indoor and outdoor off-grid new energy lighting, industrial plant lighting, municipal road lighting and other fields, and has significant industrial practicality and economic value.

[0061] 7. Scope of Protection of the Invention

[0062] The scope of protection of this invention is not limited to the specific embodiments described above. For those skilled in the art, any conventional material replacement, structural dimension adjustment, process optimization, or application of the technical solution of this invention to other types of LED lighting devices without departing from the technical principles and inventive concept of this invention shall fall within the scope of protection of this invention.

Claims

1. A series-connectable single-ended DC low-voltage area array LED bracket light, characterized in that, Includes a bracket lamp housing (3), a strip LED array circuit board (4), LED beads (9), a negative power input copper stud (12), a positive power input copper stud (15), a convex insulating pad (11), a power electrode connecting piece (16), a bracket lamp body connecting piece (17), a conductive piece connecting the end electrode and the lamp body (20), and an LED lens (21). The bracket lamp housing (3) is a conductive structure made of aluminum profile in one piece. The strip LED array circuit board (4) is laid on the flat mounting surface of the front of the bracket lamp housing (3). The strip LED array circuit board (4) integrates a circuit board negative circuit (5) and a circuit board positive circuit (6) that are mutually insulated and isolated. The circuit board has LED lamp bead negative electrode pad (7) and LED lamp bead positive electrode pad (8) adapted to the LED lamp bead (9). The LED lamp bead negative electrode pad (7) is connected to the circuit board negative electrode circuit (5), and the LED lamp bead positive electrode pad (8) is connected to the circuit board positive electrode circuit (6). The positive and negative electrodes of the LED lamp bead (9) are respectively soldered to the LED lamp bead positive electrode pad (8) and the LED lamp bead negative electrode pad (7). The LED lens (21) is mounted on the light-emitting front end of the LED lamp bead (9) and fixedly connected to the bracket lamp housing (3). One end of the strip LED array circuit board (4) is provided with a negative power pad (2) and a positive power pad (10). The negative power pad (2) is connected to the negative circuit (5) of the circuit board, and the positive power pad (10) is connected to the positive circuit (6) of the circuit board. The flat end of the negative power input copper stud (12) is soldered to the negative power pad (2), and the flat end of the positive power input copper stud (15) is soldered to the positive power pad (10). The bracket lamp housing (3) has through holes at the positions corresponding to the negative power input copper stud (12) and the positive power input copper stud (15). The column ends of the negative power input copper stud (12) and the positive power input copper stud (15) pass through the through holes and are exposed to the back of the bracket lamp housing (3). A convex insulating gasket (11) is sleeved between the copper stud and the inner wall of the through hole. A copper nut (13) is screwed onto the exposed column end of the copper stud. Multiple sets of bracket lamps are rigidly connected and fixed in series through bracket lamp body connecting piece (17). The copper studs of adjacent bracket lamps are connected in series through power electrode connecting piece (16). The negative power input copper stud (12) of the last bracket lamp is connected to the bracket lamp housing (3) through the end electrode and lamp body connecting conductive piece (20). The bracket lamp housing (3) serves as the negative conductor of the power supply circuit, so that the series lamp group can achieve single-end DC low voltage power supply.

2. The series-connectable single-ended DC low-voltage LED array bracket light according to claim 1, characterized in that, The single-ended DC low-voltage power supply voltage of the series-connected lamp group is 12V-48V. It is only necessary to connect the DC low-voltage power supply between the positive power input copper stud (15) of the first set of bracket lamps and the bracket lamp housing (3) to realize the synchronous power supply of all series-connected lamps.

3. The series-connectable single-ended DC low-voltage LED array bracket light according to claim 1, characterized in that, The negative circuit (5) and positive circuit (6) of the circuit board adopt a design method of increasing the line width and increasing the copper foil thickness. The line width is not less than 9.5mm and the copper foil thickness is not less than 35μm.

4. The series-connectable single-ended DC low-voltage LED array support lamp according to claim 1, characterized in that, The strip LED array circuit board (4) and the bracket lamp housing (3) are fixedly connected by high temperature resistant silicone adhesive. The front of the bracket lamp housing (3) is provided with a limiting boss, which is used to position the strip LED array circuit board (4).

5. The series-connectable single-ended DC low-voltage LED array support lamp according to claim 1, characterized in that, The LED beads (9) are arranged at equal intervals along the length of the strip LED array circuit board (4), and the arrangement interval is consistent with the width of the strip LED array circuit board (4) and matches the outer diameter of the LED lens (21). The LED lens (21) expands the point light-emitting surface of the LED beads (9) into a surface light-emitting surface, making up for the dark area formed by the gap between the beads.

6. The series-connectable single-ended DC low-voltage LED array support lamp according to claim 1 or 5, characterized in that, The positioning end of the LED lens (21) is matched with the preset positioning groove of the bracket lamp housing (3), and the LED lens (21) and the bracket lamp housing (3) are fixed together by transparent high temperature resistant silicone.

7. The series-connectable single-ended DC low-voltage LED array bracket light according to claim 1, characterized in that, The bracket lamp housing (3) has elongated cavities on both sides. The bracket lamp body connecting piece (17) is inserted into the cavity and is fixed to the bracket lamp housing (3) by screwing on the fixing screw (18).

8. The series-connectable single-ended DC low-voltage LED array support lamp according to claim 1, characterized in that, The negative power input copper stud (12) and the positive power input copper stud (15) are both integral copper structures, and their stud ends are provided with external threads that are compatible with copper nuts (13); the power electrode connecting piece (16) is a thin copper sheet, and it has a connecting hole that is compatible with the copper stud.

9. The series-connectable single-ended DC low-voltage LED array support lamp according to claim 1 or 7, characterized in that, The bracket lamp body connecting piece (17) and the end electrode and lamp body connecting conductive piece (20) are both made of metal conductive material. The bracket lamp body connecting piece (17) is provided with a lamp body connecting plate female screw hole (19) that is compatible with the fixing screw (18). The two ends of the end electrode and lamp body connecting conductive piece (20) are respectively tightly attached to the negative power input copper stud (12) and the bracket lamp housing (3).

10. The series-connectable single-ended DC low-voltage LED array support lamp according to claim 1, characterized in that, Multiple sets of the bracket lights can be installed in parallel in double rows. The bracket lights are rotated 180° and the housings are fixed in series through the bracket light body connecting piece (17). The copper stud circuits are connected in series through the power electrode connecting piece (16). The positive and negative power input copper studs of the first and last bracket lights converge to the same side and are directly connected to the DC low voltage power supply to form a closed power supply circuit without the need for the bracket light housing (3) as a conductive circuit.

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