Copper bar power supply structure of LED light source and line light source lamp

Abstract

The utility model relates to the technical field of LED light sources, in particular to a copper bar power supply structure of an LED light source and a line light source lamp. The copper bar power supply structure comprises an LED chip set, a power supply patch set and a copper bar. The LED chip set comprises at least two LED chips arranged in the first direction. The power supply patch group comprises at least two power supply patches arranged in the first direction, the power supply patch group is located on at least one side of the LED chip group, and the power supply patches are electrically connected with the LED chips; the copper bars are attached to and electrically connected with the multiple power supply patches located on the same side and connected with the power source positive electrode or the power source negative electrode. According to the copper bar power supply structure of the LED light source, the plurality of LED chips are supplied with power through the copper bars, and the voltage difference among the LED chips can be reduced, so that the brightness difference among the LED chips is reduced, and the uniformity of overall illumination is improved.

Description

Technical Field

[0001] This utility model relates to the field of LED light source technology, and in particular to a copper busbar power supply structure and a linear light source lamp for LED light sources. Background Technology

[0002] Line light sources are a common type of light source in production and daily life. They are characterized by their ability to produce linearly distributed illumination and are often used in indoor and outdoor lighting or factory inspection scenarios. To produce linearly distributed illumination, a line light source consists of several LED chips arranged sequentially along a certain direction. To light up the LED chips, each LED chip needs to be powered. In a common line light source structure, the LED chips are mounted on a PCB board, and the PCB board has traces that connect to the LED chips. Simply connect the PCB board to a power source to power the chips.

[0003] As the length of line light sources increases, a single PCB board can no longer meet the lighting needs. To address this, technicians use wires to connect the pads at both ends of multiple PCB boards in series, thereby powering multiple PCB boards. However, as the length continues to increase, this power supply method will result in a significant brightness difference between LED chips that are spaced apart, greatly reducing the uniformity of the line light source's illumination and significantly affecting its use. Utility Model Content

[0004] The purpose of this invention is to overcome the problem that in the existing power supply methods in the background art, the traditional power supply method results in a significant brightness difference between LED chips that are spaced a certain distance apart, which greatly reduces the uniformity of the illumination of the linear light source. This invention provides a copper busbar power supply structure for LED light sources and a linear light source lamp.

[0005] In a first aspect, this utility model provides a copper busbar power supply structure for an LED light source, comprising:

[0006] LED chipset, comprising at least two LED chips arranged along a first direction;

[0007] A power supply patch group includes at least two power supply patches arranged along a first direction, the power supply patch group being located on at least one side of the LED chipset, and the power supply patches being electrically connected to the LED chips.

[0008] A copper busbar is attached to and electrically connected to multiple power supply patches located on the same side, and the copper busbar is connected to the positive or negative terminal of the power supply.

[0009] The copper busbar power supply structure for the LED light source described in this utility model connects multiple power supply patches located on the same side via a copper busbar. These power supply patches are electrically connected to LED chips, allowing power to be supplied to multiple LED chips via the copper busbar. The copper busbar possesses excellent conductivity and extremely low resistance, resulting in a minimal voltage difference between the two ends of the busbar along the first direction. Powering each LED chip via the copper busbar reduces the voltage difference between LED chips. This is particularly beneficial when the distance between the beginning and end of an LED chip group is significant; the copper busbar power supply structure effectively controls the voltage difference between the beginning and end LED chips within a small range, thereby reducing the brightness difference between each LED chip and improving the overall uniformity of illumination. Furthermore, the proximity of the same copper busbar to multiple power supply patches, compared to connecting wires to solder pads, significantly shortens assembly time and saves production costs.

[0010] As a preferred embodiment of this utility model, it also includes a PCB board, on which the LED chip group and the power supply patch group are disposed;

[0011] The LED chip assembly has power supply patch panels and copper busbars on both sides, with one set of power supply patch panels and copper busbars connected to the positive terminal of the LED chip and the other set of power supply patch panels and copper busbars connected to the negative terminal of the LED chip.

[0012] As a preferred embodiment of this utility model, it further includes a lens assembly, which is used to adjust the light emitted by the LED chip; the lens assembly is fixedly connected to the copper busbar through a connector.

[0013] As a preferred embodiment of this utility model, the connector passes through and presses to fix the lens assembly, copper busbar and PCB board.

[0014] As a preferred embodiment of this utility model, the lens assembly includes lens optics and a lens mounting edge. The lens optics are opposite to the LED chip and can receive the light emitted by the LED chip. The lens mounting edge is in contact with the copper busbar. The connector passes through the lens mounting edge.

[0015] As a preferred embodiment of this utility model, the copper busbar is a plate and has a first through hole for the connector to pass through;

[0016] The copper busbar has protruding teeth, and the teeth correspond to the position of the first through hole.

[0017] As a preferred embodiment of this utility model, the copper busbar includes a first contact surface and a second contact surface that are opposite to each other, wherein: the first contact surface is in contact with the power supply patch, and the second contact surface is in contact with the lens assembly.

[0018] In a preferred embodiment of this utility model, the power supply patch is spaced apart from the connector; the copper busbar is insulated from the connector by an insulating component.

[0019] As a preferred embodiment of the present invention, it includes at least two PCBs arranged sequentially along a first direction, with a copper busbar connecting multiple power supply patches on multiple PCBs.

[0020] As a preferred embodiment of this utility model, the first direction is a straight line direction or a curved direction.

[0021] As a preferred embodiment of this utility model, the power supply patch is a copper component, and the power supply patch protrudes from the surface of the PCB board.

[0022] In a second aspect, the present invention provides a linear light source lamp, including the copper busbar power supply structure for the LED light source as described above.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] The copper busbar power supply structure for the LED light source described in this utility model connects multiple power supply patches located on the same side via a copper busbar. These power supply patches are electrically connected to LED chips, allowing power to be supplied to multiple LED chips via the copper busbar. The copper busbar possesses excellent conductivity and extremely low resistance, resulting in a minimal voltage difference between the two ends of the busbar along the first direction. Powering each LED chip via the copper busbar reduces the voltage difference between LED chips. This is particularly beneficial when the distance between the beginning and end of an LED chip group is significant; the copper busbar power supply structure effectively controls the voltage difference between the beginning and end LED chips within a small range, thereby reducing the brightness difference between each LED chip and improving the overall uniformity of illumination. Furthermore, the proximity of the same copper busbar to multiple power supply patches, compared to connecting wires to solder pads, significantly shortens assembly time and saves production costs. Attached Figure Description

[0025] Figure 1 This is a front view schematic diagram of the copper busbar power supply structure of the LED light source described in this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0027] Figure 3 for Figure 1 A schematic diagram of the copper busbar power supply structure described above;

[0028] Figure 4 This is a front view of the copper busbar power supply structure for the LED light source described in this utility model (the first lens assembly and the left copper busbar are omitted).

[0029] Figure 5 for Figure 4 A schematic diagram of the copper busbar power supply structure described above;

[0030] Figure 6 for Figure 5 Enlarged view of section B in the middle;

[0031] Figure 7 for Figure 4 A top view of the copper busbar power supply structure described in the figure;

[0032] Figure 8 This is a top view of the linear light source lamp of this utility model;

[0033] Figure 9 This is a cross-sectional view of the linear light source lamp described in this utility model.

[0034] Marked in the image:

[0035] 1-PCB board;

[0036] 11-Second through hole;

[0037] 2-LED chipset;

[0038] 21-LED chip;

[0039] 3-Power supply patch panel group;

[0040] 31-Power supply patch;

[0041] 4- Copper busbar;

[0042] 41-First contact surface; 42-Second contact surface; 43-First through hole; 44-Toothed portion;

[0043] 5-Lens assembly;

[0044] 51 - Lens optics; 52 - Lens mounting edge; 53 - Countersunk hole;

[0045] 6-Connectors;

[0046] 61-Insulating components;

[0047] 7-Matrix. Detailed Implementation

[0048] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0049] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0050] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0051] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0052] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0053] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0054] Example 1

[0055] like Figures 1 to 7 As shown, this embodiment provides a copper busbar power supply structure for an LED light source, including an LED chip group 2, a power supply patch group 3, and a copper busbar 4. The LED chip group 2 includes at least two LED chips 21 arranged along a first direction; the power supply patch group 3 includes at least two power supply patches 31 arranged along the first direction, the power supply patch group 3 is located on at least one side of the LED chip group 2, and the power supply patches 31 are electrically connected to the LED chips 21; the copper busbar 4 is attached to and electrically connected to a plurality of power supply patches 31 located on the same side, and the copper busbar 4 is connected to the positive or negative power supply terminal.

[0056] LED chip 21 is the core light-emitting element of LED lamp, which converts electrical energy into light energy through the electroluminescence principle of semiconductor materials; in some embodiments, LED chip 21 is encapsulated in a lens component of resin, silicone or other materials to form LED lamp beads.

[0057] In this embodiment, LED chips 21 are distributed in groups to form LED chip groups 2. Each LED chip group 2 includes a plurality of LED chips 21 arranged sequentially along a specific direction, which can be defined as a first direction. The first direction can be either a straight line or a curved line.

[0058] The power supply patch 31 is a conductive element that provides power. The power supply patch 31 can be electrically connected to the positive and negative pins of the LED chip 21. The LED chip 21 is lit by connecting the power supply patch 31 to a power source. In this embodiment, the power supply patches 31 are distributed in groups to form a power supply patch group 3. Each power supply patch group 3 includes a plurality of power supply patches 31 arranged sequentially along a first direction.

[0059] If the first direction is a straight line, several LED chips 21 can form a linear light source.

[0060] If the first direction is a curved direction, several LED chips 21 can form a curved light source, such as: arc, semi-circle, ellipse, etc.

[0061] Preferably, all power supply patches 31 in the same power supply patch group 3 are connected to the positive terminal of the LED chip 21, or all power supply patches 31 in the same power supply patch group 3 are connected to the negative terminal of the LED chip 21.

[0062] The copper busbar 4 can be made of high-purity copper, which usually has excellent conductivity and extremely low resistance. The copper busbar 4 is attached to the power supply patch 31, and an electrical connection can be formed between the copper busbar 4 and the power supply patch 31 by attaching them to each other. By connecting the copper busbar 4 to the positive or negative terminal of the power supply, the pins of the LED chip 21 can be connected to the positive or negative terminal of the power supply.

[0063] The copper busbar 4 has a relatively long dimension in the first direction, which is used to attach to multiple power supply patches 31 arranged along the first direction on the same side. Due to the excellent conductivity and extremely low resistance of the copper busbar 4, the voltage difference between the two ends of the copper busbar 4 that are far apart in the first direction is small, thereby reducing the voltage difference between each LED chip 21 connected to it, making the brightness of each LED chip 21 more consistent and improving the uniformity of illumination.

[0064] In summary, the copper busbar power supply structure for the LED light source described in this embodiment connects multiple power supply patches 31 located on the same side via a copper busbar 4. The power supply patches 31 are electrically connected to the LED chips 21, allowing the copper busbar 4 to supply power to the multiple LED chips 21. The copper busbar 4 has excellent conductivity and extremely low resistance, resulting in a very small voltage difference between its two ends along the first direction. By supplying power to each LED chip 21 via the copper busbar 4, the voltage difference between the LED chips 21 can be reduced. Especially when the distance between the beginning and end of the LED chip group 2 is large, the copper busbar 4 power supply structure can control the voltage difference between the beginning and end LED chips 21 within a small range, thereby reducing the brightness difference between each LED chip 21 and improving the overall uniformity of illumination. The copper busbar 4 is in close contact with multiple power supply patches 31, which, compared to connecting wires to pads, significantly shortens assembly time and saves production costs.

[0065] In some implementations, a PCB board 1, an LED chipset 2, and a power supply patch assembly 3 are also disposed on the PCB board 1.

[0066] PCB board 1, also known as printed circuit board, is used to connect and support electronic components. In the field of LED lighting, the wires on PCB board 1 can connect LED chip 21, resistors, capacitors and other components to form a complete circuit. By connecting PCB board 1 to the positive and negative terminals of the power supply, the LED chip 21 can be lit to achieve lighting.

[0067] In this embodiment, both the LED chip 21 and the power supply patch 31 are arranged on the PCB board 1; preferably, the power supply patch 31 is a copper component, and the power supply patch 31 protrudes from the surface of the PCB board 1 to facilitate the bonding of the copper busbar 4.

[0068] In a preferred embodiment, power supply patch groups 3 and copper busbars 4 are provided on both sides of the LED chip group 2. One set of power supply patch groups 3 and copper busbars 4 is connected to the positive terminal of the LED chip 21, and the other set of power supply patch groups 3 and copper busbars 4 is connected to the negative terminal of the LED chip 21. The two copper busbars 4 can be connected to the positive or negative terminal of the power supply respectively to light up multiple LED chips 21.

[0069] In another embodiment, the power supply patch group 3 and copper busbar 4 can be provided only on one side of the LED chip group 2, and the power supply can be connected to the other side by pads or other means.

[0070] Actual measurements show that for a 2.4-meter-long, 24V-powered line light source, the voltage difference between the LED chips 21 at the beginning and end can reach 1.5V under the traditional pad series connection method; however, the copper busbar power supply structure for the LED light source provided in this embodiment has a voltage difference of only 0.1V between the LED chips 21 at the beginning and end, which not only improves the uniformity of illumination but also reduces the heat loss of the lamp.

[0071] Example 2

[0072] This embodiment provides a copper busbar power supply structure for an LED light source. Based on embodiment 1, it further includes a lens assembly 5. The lens assembly 5 is used to adjust the light emitted by the LED chip 21. The lens assembly 5 is fixedly connected to the copper busbar 4 via a connector 6.

[0073] The lens assembly 5 may include a convex lens located on the light-emitting side of the LED chip 21. The light-emitting angle of the LED chip 21 or LED lamp bead is adjusted by the light-focusing effect of the convex lens. For a plurality of LED chips 21 arranged along the first direction, the lens assembly 5 may be a strip lens extending along the first direction.

[0074] The lens assembly 5 is fixedly connected to the copper busbar 4 via the connector 6, thereby enabling the lens assembly 5 to remain stationary relative to the LED chip 21 and reducing the light fluctuation caused by the relative shaking of the lens assembly 5 and the LED chip 21.

[0075] In some embodiments, the connector 6 passes through and presses to fix the lens assembly 5, the copper busbar 4, and the PCB board 1. For example, the connector 6 may include an enlarged end and a body, with the body passing through through holes in the lens assembly 5, the copper busbar 4, and the PCB board 1 in sequence, and the enlarged end being blocked by the through holes. By drilling and fixing one end of the body away from the enlarged end to the base 7 or other structures, the lens assembly 5, the copper busbar 4, and the PCB board 1 can be pressed and fixed.

[0076] By squeezing and fixing, the distance between the copper busbar 4 and the PCB board 1 can be shortened, so that the copper busbar 4 and the power supply patch 31 can be tightly attached, thereby improving contact stability.

[0077] In this embodiment, the connector 6 is a screw, the base 7 is a lamp profile, the base 7 is provided with a threaded hole, the lens assembly 5 is provided with a countersunk hole 53, the copper busbar 4 is provided with a first through hole 43, the PCB board 1 is provided with a second through hole 11, and the connector 6 is fixed to the base 7 after passing through the countersunk hole 53, the first through hole 43 and the second through hole 11.

[0078] Preferably, the lens assembly 5 includes a lens optics 51 and a lens mounting edge 52. The lens optics 51 is opposite to the LED chip 21 and can receive the light emitted by the LED chip 21. The lens mounting edge 52 is in contact with the copper busbar 4. The connector 6 passes through the lens mounting edge 52.

[0079] like Figures 1 to 7 As shown, the lens optics 51 can be a convex lens, and the lens optics 51 is spaced apart from and opposite to the light-emitting side of the LED chip 21; the lens mounting edge 52 and the lens optics 51 can be an integrally formed structure, and the lens mounting edge 52 is preferably located on both sides of the lens optics 51. A countersunk hole 53 can be opened on the lens mounting edge 52, and the connector 6 passes through the countersunk hole 53 on the lens mounting edge 52.

[0080] During installation, align the lens mounting edge 52, copper busbar 4, and through holes on the PCB board 1, then pass the connector 6 through and fix the connector 6 to the threaded hole on the base 7.

[0081] Preferably, the copper busbar 4 is a plate and has a first through hole 43 for the connector 6 to pass through; the copper busbar 4 has protruding teeth 44, and the teeth 44 correspond to the positions of the first through hole 43.

[0082] like Figure 5 and Figure 6 As shown, the tooth 44 can be a protrusion provided on the side of the copper busbar 4. By increasing the cross-sectional area of ​​the copper busbar 4 through the tooth 44, the cross-sectional area occupied by the first through hole 43 can be compensated, and the resistance of the copper busbar 4 can be reduced.

[0083] In some embodiments, the copper busbar 4 includes a first contact surface 41 and a second contact surface 42 that are opposite to each other, wherein the first contact surface 41 is in contact with the power supply patch 31 and the second contact surface 42 is in contact with the lens assembly 5.

[0084] The second contact surface 42 can be in direct contact with the lens assembly 5 or indirect contact.

[0085] Preferably, the teeth 44 are disposed on the side of the copper busbar 4 other than the first contact surface 41 and the second contact surface 42.

[0086] In some embodiments, the power supply patch 31 is spaced apart from the connector 6; the copper busbar 4 is insulated from the connector 6 by an insulator 61.

[0087] like Figure 7 As shown, the power supply patch 31 can be spaced out on both sides of the connector 6 in the first direction to prevent the power supply patch 31 from connecting with the connector 6 and short-circuiting. To improve the tightness of the contact, the power supply patch 31 is positioned close to both sides of the connector 6 so that the copper busbar 4 and the power supply patch 31 can be tightly attached when the connector 6 presses the copper busbar 4 and the PCB board 1.

[0088] The insulating component 61 can be a rubber sleeve. One end of the insulating component 61 can be provided with an enlarged part. The cross-sectional size of the enlarged part is larger than the diameter of the first through hole 43 on the copper busbar 4, so that the enlarged part is blocked by the first through hole 43 to prevent the insulating component 61 from sliding along the connector 6.

[0089] Example 3

[0090] This embodiment provides a copper busbar power supply structure for an LED light source, which, based on embodiment 1 or 2, includes at least two PCB boards 1 arranged sequentially along a first direction, with the same copper busbar 4 connecting multiple power supply patches 31 on multiple PCB boards 1.

[0091] Multiple LED chips 21 can be set on each PCB board 1; the number of PCB boards 1 is determined according to the length of a single PCB board 1 and the length of the line light source, for example: the number of PCB boards 1 can be 3-24.

[0092] Example 4

[0093] like Figure 8 and Figure 9 As shown, this embodiment provides a linear light source lamp, including a copper busbar power supply structure for an LED light source as described in Embodiment 1, 2, or 3.

[0094] The linear light source lamp includes a base 7, and a PCB board 1 is fixed on the base 7; the shape of the linear light source lamp can be straight, curved, etc.

[0095] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A copper bar power supply structure of an LED light source, characterized in that, include: LED chipset (2), which includes at least two LED chips (21) arranged along a first direction. A power supply patch group (3) includes at least two power supply patches (31) arranged along a first direction. The power supply patch group (3) is located on at least one side of the LED chip group (2). The power supply patches (31) are electrically connected to the LED chip (21). A copper busbar (4) is attached to and electrically connected to multiple power supply patches (31) located on the same side. The copper busbar (4) is connected to the positive or negative power supply terminal.

2. The copper busbar power supply structure for LED light sources according to claim 1, characterized in that, It also includes a PCB board (1), on which the LED chip group (2) and the power supply patch group (3) are disposed; The LED chip group (2) is provided with power supply patch group (3) and copper busbar (4) on both sides, and one of the power supply patch group (3) and copper busbar (4) is connected to the positive electrode of the LED chip (21), and the other of the power supply patch group (3) and copper busbar (4) is connected to the negative electrode of the LED chip (21).

3. The copper busbar power supply structure for LED light sources according to claim 2, characterized in that, It also includes a lens assembly (5), which is used to adjust the light emitted by the LED chip (21); the lens assembly (5) is fixedly connected to the copper busbar (4) by a connector (6).

4. The copper busbar power supply structure for LED light sources according to claim 3, characterized in that, The connector (6) passes through and presses to fix the lens assembly (5), copper busbar (4) and PCB board (1).

5. The copper busbar power supply structure for LED light sources according to claim 4, characterized in that, The lens assembly (5) includes a lens optics (51) and a lens mounting edge (52). The lens optics (51) is opposite to the LED chip (21) and can receive the light emitted by the LED chip (21). The lens mounting edge (52) is attached to the copper busbar (4). The connector (6) passes through the lens mounting edge (52).

6. The copper busbar power supply structure for LED light sources according to claim 5, characterized in that, The copper busbar (4) is a plate and has a first through hole (43) for the connector (6) to pass through. The copper busbar (4) is provided with protruding teeth (44), and the teeth (44) correspond to the position of the first through hole (43).

7. The copper busbar power supply structure for LED light sources according to claim 3, characterized in that, The copper busbar (4) includes a first contact surface (41) and a second contact surface (42) that are opposite to each other, wherein: the first contact surface (41) is in contact with the power supply patch (31), and the second contact surface (42) is in contact with the lens assembly (5).

8. The copper busbar power supply structure for LED light sources according to claim 3, characterized in that, The power supply patch (31) is spaced apart from the connector (6); the copper busbar (4) is insulated from the connector (6) by an insulating member (61).

9. The copper busbar power supply structure for LED light sources according to any of claims 2-8, characterized in that, Includes at least two PCBs (1) arranged sequentially along a first direction, with the same copper busbar (4) connecting multiple power supply patches (31) on multiple PCBs (1). And / or, The first direction is either a straight line or a curved line; And / or, The power supply patch (31) is a copper component and protrudes from the surface of the PCB board (1).

10. A linear light source luminaire characterized by, The copper busbar power supply structure for the LED light source is included as described in any one of claims 1-9.

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