Conductive plate, track light and production method of conductive plate

Abstract

The present invention discloses the technical field of lighting equipment. The conductive plate of the present invention comprises a conductive surface on which a conductive strip is arranged. The conductive strip extends along the length direction of the conductive plate and is covered with a conductive film without metallic luster. This solves the problem that people intuitively feel unsafe due to direct use of metal for conduction and that exposed metal is easily oxidized and affects the conductive performance, thereby alleviating people's concerns about safety. Moreover, the conductive film isolates the conductive strip from the outside world to protect the conductive strip. In addition, the conductive film has good conductivity and can better realize the conductive function.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting equipment, and in particular to a conductive plate, a track light and a production method of the conductive plate. Background Art

[0002] Track lights are generally used as specific spotlights, and are generally used for commercial purposes. For example, they are frequently used in key lighting places such as exhibition halls, shopping malls, jewelry, brand clothing, high-end clubs, brand business halls, professional windows, etc., especially in some large exhibitions such as car shows and video game exhibitions. Track lights include guide rails and light sources. The light source must be installed on the guide rail. The guide rail contains a voltage input inside. The voltage can be domestic 220V AC input, or it can be customized as a low-voltage input. Generally, for safety reasons, low-voltage input is used. The most common guide rail currently contains conductive metal strips on both sides of the track, and the installation joint of the track light has a rotatable conductive copper sheet. During installation, the conductive copper sheet on the track light contacts the conductive metal strip inside the guide rail, and the track light can be powered on, and the light source can be lit. In addition, the track light can adjust the irradiation angle at will to create different lighting effects.

[0003] When low voltage input is used in the guide rail, due to the safe voltage input, bare copper conductive metal strips are usually used. This method allows the naked eye to observe the operating contact of the track light, which is convenient for troubleshooting. On the other hand, it can also simplify the structure of the track light, making it easy to install and maintain. However, this structural method also has shortcomings. On the one hand, the bare copper conductive strip is easy to oxidize. On the other hand, because the copper conductive metal strip is purple-red, people usually worry about its "safety" (in fact, safe voltage) when they see the bare conductive metal strip. In order to solve this problem, carbon oil can be printed on the copper conductive metal strip. In fact, the existing carbon oil printing process is only applied to the PCB circuit board structure, and is not applied to the conductive board production process. In addition, the production cycle of printing carbon oil is long, and the production cost of carbon oil is high. Summary of the invention

[0004] The purpose of the present invention is to provide a conductive plate in view of the shortcomings of the prior art of printing carbon oil on a conductive metal strip, such as a long production cycle and high carbon oil cost, wherein the conductive portion of the conductive plate is covered with a conductive film, so that the conductive portion of the conductive plate can achieve conductivity while being visually distinguished from the existing purple-red copper strip conductivity, and the conductive film production process is simple and the cost is low.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A conductive plate comprises a conductive surface, on which conductive strips are arranged, the conductive strips extend along the length direction of the conductive plate, and the conductive strips are covered with a conductive film without metallic luster.

[0007] The conductive strip is a copper conductive strip or a copper alloy conductive strip, and the conductive film is formed by electroplating the copper conductive strip or the copper alloy conductive strip. The conductive film is formed by making the copper conductive strip or the copper alloy conductive strip adhere to the surface by electrolysis.

[0008] Existing conductive strips are made of metal with metallic luster, usually copper or copper alloy, and inferior iron. On the one hand, the conductive plate with metallic conductive strips gives people a sense of insecurity. On the other hand, during use, since the conductive strips are exposed to the air for a long time, an oxide film is easily formed, which affects the conductive performance. The technical solution of covering the conductive strips with a conductive film not only eliminates the concerns about safety, but also isolates the conductive strips from the outside world to protect the conductive strips. In addition, the conductive film has good conductivity and realizes the conductive function.

[0009] Preferably, the conductive film is a tin-nickel alloy plating layer.

[0010] Firstly, tin-nickel alloy plating is used. Tin-nickel alloy plating has good corrosion resistance, so it has the advantage of strong resistance to color change, which effectively avoids the formation of oxide film on exposed copper or copper alloy conductive strips, thereby affecting its conductivity; moreover, tin-nickel alloy has good solderability. When using conductive plates for track light conduction, their length is matched according to the site, which means that the length of the conductive plates needs to be arbitrarily cut. Using tin-nickel alloy as the conductive film can well achieve the connection at the joints of the conductive plates, effectively ensuring the conductivity of the connecting joints and avoiding affecting the splicing of conductive plates.

[0011] Secondly, tin-nickel alloy is used as the coating of the conductive strip, the coating has less stress inside and is not prone to cracking or falling off.

[0012] In addition, since the color of tin-nickel alloy is bright black, this plating layer covers the existing conductive strips such as copper or copper alloy, covering the purple-red background color of the original conductive strips, giving people a sense of safety.

[0013] Preferably, the conductive plate further comprises a wiring surface arranged on the opposite side of the conductive surface, the wiring surface is electrically connected to the conductive strip, and wiring terminals connected to a power source are arranged on the wiring surface.

[0014] By arranging wiring terminals on the wiring surface, the conductive strips on the conductive surface are energized. The wiring terminals are arranged on the opposite sides. When the conductive plate is in use, it is ensured that the light source slides smoothly on the conductive strips without causing sliding difficulties or affecting the circuit layout of the wiring terminals due to the existence of the wiring terminals.

[0015] Preferably, the wiring surface is also provided with a circuit for controlling the lighting effect of the light source. The circuit is electrically connected to the conductive strip, and by arranging the circuit, the light source can be controlled to achieve different lighting effects.

[0016] Furthermore, a through hole is drilled on the conductive plate, and the inner wall of the through hole is covered with a conductive layer, so that the conductive strip on the conductive surface is electrically connected to the wiring terminal on the wiring surface, thereby achieving power supply. When the circuit is arranged on the wiring surface, the circuit and the wiring terminal are electrically connected to achieve conduction, and at the same time, the conductive strip and the circuit are electrically connected through the conductive layer on the through hole to achieve conduction.

[0017] Preferably, the conductive plate is a two-wire single-circuit conductive plate, and two conductive strips are arranged side by side on the conductive surface.

[0018] The two conductive strips are arranged relatively independently on the conductive surface, and the two conductive strips are electrically connected to the circuits on the wiring surface respectively to realize power conduction and / or signal transmission.

[0019] Preferably, the conductive plate is a three-wire single-circuit conductive plate, and three conductive strips are arranged side by side on the conductive surface.

[0020] The three conductive strips are arranged relatively independently on the conductive surface, and the three conductive strips are electrically connected to the circuits on the wiring surface respectively to realize power conduction and / or signal transmission.

[0021] Preferably, a mounting structure for fixing the conductive plate is provided on the conductive plate.

[0022] When using a conductive plate, it is usually installed on a guide rail. A slot is arranged on the guide rail and the conductive plate is installed on the guide rail by insertion, or an adsorption structure is arranged inside the guide rail and the conductive plate is installed on the guide rail by adsorption.

[0023] By providing a mounting structure on the conductive plate, the conductive plate can be fixedly installed through the mounting structure, so that when the conductive plate is installed on the guide rail, the structure is stable and not easy to fall, thereby ensuring safe installation and use. On the other hand, the conductive plate can also be fixed separately through the mounting structure, so that when the conductive plate is in a conductive state, the conductive plate and the guide rail are installed separately, and the light source realizes conduction when in contact with the conductive plate. At the same time, the light source realizes sliding on the guide rail, but the conductive plate and the guide rail are installed separately, thereby improving the convenience and diversity of installation and realizing use in multiple occasions.

[0024] Correspondingly, the present application also provides a track light, comprising a guide rail and a conductive plate as described above fixed in the guide rail, and also comprising a light source mounted on the guide rail, wherein the light source is electrically connected to the conductive plate so that the light source emits light through power supplied by the conductive plate.

[0025] The track light provided by this solution uses the conductive plate as described above, so the track light gives people a sense of safety and reliability, and at the same time can ensure that the light source is in a good conductive state, ensuring a good lighting display effect of the track light.

[0026] Preferably, the length of the conductive plate corresponds to the length of the guide rail, so that when the light source is slidably mounted on the guide rail, the light source is always electrically connected to the conductive plate.

[0027] Preferably, the guide rail comprises a U-shaped mounting groove, and the conductive plate is mounted on the groove bottom or the groove walls on both sides of the U-shaped mounting groove.

[0028] During the installation of the guide rail, the U-shaped installation groove usually faces downward. When side conduction is adopted, the conductive plate is installed on one side or both sides of the groove wall; when top conduction is adopted, the conductive plate is installed at the bottom of the U-shaped installation groove.

[0029] Correspondingly, the present application also provides a method for producing a conductive plate, which includes the following steps in sequence: cutting, drilling, copper plate electroplating, circuit pattern transfer, pattern electroplating, etching, solder mask, printing characters, V-engraving on a gong plate, electrical testing, and shipment inspection, and also includes electroplating a conductive film after printing characters, including printing peelable glue, electroplating a conductive film, and tearing off peelable glue.

[0030] In the existing production process, screen printing technology is usually used to process the conductive strips by printing carbon oil, but this method is costly and has a long production cycle. The technical solution of the present application can achieve mass production, and the production cost of the electroplated conductive film is also lower.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The technical solution of covering the conductive strip with a conductive film without metallic luster not only eliminates the concerns about safety, but also isolates the conductive strip from the outside world to protect the conductive strip. In addition, the conductive film has good conductivity and realizes the conductive function.

[0033] 2. The production method of electroplated conductive film using the technical solution can shorten the production cycle of the conductive plate, improve the uniformity of the conductive film, and can be produced on an automatic line with low batch production cost. In addition, the material cost of the electroplated conductive film is lower than that of carbon oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the conductive surface of the conductive plate in Example 1.

[0035] Figure 2 Schematic diagram of the wiring surface of the conductive plate in Example 1.

[0036] Figure 3Schematic diagram of solder resistance on the wiring surface in Example 1.

[0037] Figure 4 Schematic diagram of solder resistance of the conductive surface in Example 1.

[0038] Figure 5 For along Figure 1 Schematic diagram of the cross section of AA.

[0039] Figure 6 Schematic diagram of the conductive surface of the conductive plate in Example 2.

[0040] Figure 7 Schematic diagram of the wiring surface of the conductive plate in Example 2.

[0041] Figure 8 Schematic diagram of solder resistance on the wiring surface in Example 2.

[0042] Fig. 9 Schematic diagram of the conductive plate and guide rail installation structure of the track light in Example 3.

[0043] Fig.10 This is a schematic diagram of another installation structure of the conductive plate and the guide rail of the track light in Example 3.

[0044] Markings in the figure: 1-conductive plate, 1a-conductive surface, 1b-wiring surface, 2-conductive strip, 3-conductive film, 4-wiring terminal, 5-line, 6-through hole, 7-mounting structure, 8-guide rail, 8a-U-shaped mounting groove, 9a-wiring surface solder resist area, 9b-conductive surface solder resist area, 10-substrate, 11-copper sheet. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0046] Example 1

[0047] This embodiment provides a two-wire single-loop conductive plate.

[0048] like Figure 1-5 As shown, a conductive plate 1 includes a substrate 10 and copper sheets 11 covering both sides of the substrate 10 , wherein the copper sheets 11 completely cover the two plate surfaces of the substrate 10 .

[0049] The conductive plate 1 is a FR4 conductive plate, that is, the substrate 10 of the conductive plate is a heat-resistant material, FR4 is the code for the grade of flame-retardant materials, and the conductive plate 1 is a two-wire single-circuit conductive plate. The conductive plate 1 includes a conductive surface 1a and a wiring surface 1b, and two conductive strips 2 are arranged side by side on the conductive surface 1a, with a gap left between the two conductive strips 2, so that the two conductive strips 2 are arranged relatively independently on the conductive surface 1a.

[0050] The two conductive strips 2 extend along the length direction of the conductive plate 1 , and the two conductive strips 2 are covered with a conductive film 3 without metallic luster.

[0051] As one of the preferred implementation modes, the conductive strip 2 of this embodiment is a copper conductive strip or a copper alloy conductive strip, and the conductive film 3 is formed by electroplating the copper conductive strip or the copper alloy conductive strip, and the conductive film 3 is formed by adhering to the surface of the copper conductive strip or the copper alloy conductive strip by electrolysis.

[0052] As one of the preferred embodiments, the conductive film 3 is a tin-nickel alloy coating. The use of the tin-nickel alloy coating has the following advantages: ① The tin-nickel alloy coating has good corrosion resistance, so it has the advantage of strong anti-color change ability, which effectively avoids the exposed copper or copper alloy conductive strip from easily forming an oxide film, thereby affecting its conductive performance; ② The tin-nickel alloy has good solderability. When using a conductive plate for track light conduction, its length is matched according to the site, which means that the length of the conductive plate needs to be arbitrarily cut. The use of tin-nickel alloy as a conductive film can well achieve the connection at the joint of the conductive plate, effectively ensure the conductivity of the connecting joint, and avoid affecting the splicing of the conductive plate; ③ The internal stress of the coating is small, and it is not easy to crack and fall off; ④ The appearance is very good. Since the color of the tin-nickel alloy is bright black, this coating is covered on the existing conductive strip such as copper or copper alloy, covering the purple-red background color of the original conductive strip, giving people a sense of security, and can be used for decorative chromium-substituting coating.

[0053] As other embodiments, the conductive film 3 may also be made of tin plating, and other tin-based plating such as tin-lead plating, but the advantages in performance, appearance and cost are not as obvious as those of tin-nickel alloy plating.

[0054] The wiring surface 1b of the conductive plate 1 is located on the opposite side of the conductive surface 1a. The wiring surface 1b is electrically connected to the conductive strip 2. A circuit 5 for controlling the lighting effect of the light source is also provided on the wiring surface 1b. The circuit 5 is also electrically connected to the conductive strip 2. A wiring terminal 4 is arranged on the wiring surface 1b. The wiring terminal 4 includes an interface for connecting to a power source and an interface for being arranged on the circuit 5. After the interface for connecting to the power source is connected to the power source, the entire conductive plate 1 is turned on and energized. The interface on the circuit 5 can be used to connect other circuit structures.

[0055] It is worth mentioning that: Figure 2The circuit 5 marked in the middle part of the circuit board 1 and the circuit 5 marked at both ends of the circuit board are not necessarily separated. The two can be electrically connected to the conductive strips respectively, or the two can be electrically connected and then electrically connected to the conductive strips. In the latter case, the blank space in the figure represents the covered ink. The two are connected as a whole under the ink, and the circuit 5 on the wiring surface 1b is not just one circuit as marked in the figure. In actual use, the circuits can be arranged according to needs and may be complicated. Figure 2 It is just a schematic diagram showing its structural setup.

[0056] As one of the preferred implementations, Figure 8 As shown, a through hole 6 is drilled on the conductive plate 1, and the inner wall of the through hole 6 is covered with a conductive layer, so that the conductive strip 2 on the conductive surface 1a of the conductive plate 1 is electrically connected to the wiring surface 1b, thereby achieving electrical conduction. At the same time, the connection and conduction between the circuit 5 and the conductive strip is achieved through the conductive layer of the through hole 6. When the interface connected to the power supply is connected to the power supply, the circuit 5 is turned on, and the conductive strip is turned on at the same time, thereby completing the conduction of the light source.

[0057] The two conductive strips 2 of the two-wire single-circuit conductive plate of this embodiment are electrically connected to the circuits through the through holes 6 on the wiring surface 1b respectively, so as to realize power conduction and / or signal transmission.

[0058] Example 2

[0059] This embodiment provides a three-wire single-loop conductive plate.

[0060] The conductive plate in this embodiment is substantially the same as that in Embodiment 1, except that this embodiment is a three-wire single-circuit conductive plate.

[0061] like Figure 6-8 As shown, the conductive plate 1 includes a conductive surface 1a and a wiring surface 1b. Three conductive strips 2 are arranged side by side on the conductive surface 1a. A gap is left between two adjacent conductive strips 2, so that the three conductive strips 2 are arranged relatively independently on the conductive surface. By providing a through hole 6, and the inner wall of the through hole 6 is covered with a conductive layer, the three conductive strips 2 are respectively connected to the line 5 on the wiring surface to achieve power conduction and / or signal transmission.

[0062] Another difference between this embodiment and embodiment 1 is that a mounting structure 7 for fixing the conductive plate is provided on the conductive plate 1 of this embodiment. The mounting structure 7 may adopt screw holes for connection with bolts, or may adopt pin holes for connection with pins, or a universal buckle may be arranged on the conductive plate to clamp the conductive plate at the position to be fixed.

[0063] When using a conductive plate, it is usually installed on a guide rail. A slot is arranged on the guide rail and the conductive plate is installed on the guide rail by insertion, or an adsorption structure is arranged inside the guide rail and the conductive plate is installed on the guide rail by adsorption.

[0064] Example 3

[0065] This embodiment provides a track light.

[0066] like Fig. 9 and 10 As shown, the track light includes a guide rail 8 and a conductive plate 1 as described in Example 1 or Example 2 fixed in the guide rail 8, and also includes a light source (not shown in the figure) installed on the guide rail 8, and the light source is electrically connected to the conductive plate 1 so that the light source emits light when the conductive plate 1 is powered.

[0067] The guide rail 8 of the track light has a certain length, so that the track light can slide in the guide rail 8 according to the usage, thereby adjusting the irradiation position and irradiation angle to meet different irradiation needs. The length of the conductive plate 1 corresponds to the length of the guide rail 8, so that when the light source is slidably installed on the guide rail 8, the light source is always electrically connected to the conductive plate 1.

[0068] As one of the preferred embodiments, the guide rail 8 includes a U-shaped mounting groove 8a, and the conductive plate 1 is installed on the bottom or both side walls of the U-shaped mounting groove 8a. The provision of the U-shaped mounting groove 8a not only facilitates the installation of the conductive plate 1, but also allows the light source to be installed in the U-shaped mounting groove 8a.

[0069] For example, a track light source with a rotatable conductive copper sheet at a common joint is used, and the conductive copper sheet of the track light source is electrically connected to the conductive strip of the conductive plate. When the conductive plate is powered on, the track light source emits light. At the same time, the conductive plate with a circuit in this solution is used, and the circuit pattern is arranged in the conductive plate or through the interface arranged on the circuit 5, an external circuit structure or a sensor is connected to realize the control of the track light source, so as to realize intelligent lighting.

[0070] When the light source is mounted on the guide rail 8, the U-shaped mounting groove 8a of the guide rail 8 is usually facing downward. Fig.10 The side conduction shown in the figure, the conductive plate 1 is installed on one side or both sides of the groove wall; the conductive strip of the conductive plate 1 faces the opening side of the U-shaped mounting groove 8a, so that the light source is electrically connected to the conductive plate 1; it can also be used as Fig. 9 The upper top is conductive as shown, the conductive plate 1 is horizontally installed at the bottom of the U-shaped mounting groove 8a with the conductive strip facing downward. After the light source is installed on the U-shaped mounting groove 8a, the power connector of the light source is electrically connected to the conductive plate 1 to achieve conduction.

[0071] It is worth noting that the structure of the drawings in this embodiment is not used to limit the structure of the guide rail. Guide rails of any structure, including side conduction, top conduction and other related conduction methods, as long as they are used to install the conductive plate of this application, belong to the protection scope of this application.

[0072] Example 4

[0073] The present application provides a method for producing a conductive plate.

[0074] When producing the conductive plate in Example 1 or Example 2, the following steps are sequentially included:

[0075] a. Cut the material, cut the base material of the whole board into the corresponding required size;

[0076] b. Drilling, such as Figure 8 As shown, a through hole 6 is drilled on the substrate, and the glue residue is removed;

[0077] c. Copper cladding, a layer of copper is plated on the entire substrate surface and through-hole wall;

[0078] d. Circuit pattern transfer, transferring the circuit pattern to the conductive plate;

[0079] e. Pattern electroplating: electroplating the circuit part to prevent the circuit part from being etched away in the subsequent etching process;

[0080] f. Etching;

[0081] g. Solder resist, such as Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, the wiring surface solder resist area 9a and the conductive surface solder resist area 9b of the conductive plate 1 are solder-resisted;

[0082] h. Printing characters, printing the basic information of the conductive plate on the conductive plate, and forming an ink coverage area except for the conductive strips and the rest of the solder mask area;

[0083] i. Electroplated conductive film, specifically including printed peelable adhesive, electroplated conductive film and peelable adhesive.

[0084] j. V engraving on gong plate, electrical testing, and shipment inspection.

[0085] When electroplating the conductive film, you can first print the peelable glue where the electroplating is required, then electroplate the conductive film, and finally tear off the peelable glue. By electroplating the conductive film, a conductive film without metallic luster is formed on the conductive strip. This production method can be produced by automatic lines, so it is easy to mass produce, the production cost is low, and the electroplating process can ensure that the conductive film has good uniformity.

[0086] Example 5

[0087] This embodiment is a comparative embodiment in which a carbon oil production process is used to replace the electroplated conductive film in Embodiment 3.

[0088] The production steps of the carbon oil production process are different from those of the technical solution in Example 4 in that step i uses screen-printed carbon oil, which is printed on the conductive strips of the conductive plate and then cured in an oven. Since carbon oil also has good conductivity, the carbon oil production process can also solve the technical problems encountered in this application. However, since the technical solutions of the two are completely different, there are large differences in production time and cost. The electroplating conductive film method has the advantages of short production cycle, good uniformity and low material cost. At the same time, since the conductive plate is easily deformed after baking, the electroplating conductive film can ensure the quality of conductivity.

[0089] Production cycle: The time for printing carbon oil is roughly the same as that for electroplating, but the carbon oil needs to be dried after printing, and the drying time is usually 45 minutes. Therefore, the production cycle of the carbon oil production process is extended by 45 minutes;

[0090] Material cost: Depending on the design scheme, the conductive area of ​​the conductive plate is different. For example, in the two-wire single-circuit conductive plate in Example 2, the area of ​​the conductive film is 44%, and the corresponding carbon oil area occupies 44% of the plate. Under such conditions, the carbon oil printing process is about 10% higher than the tin-nickel alloy plating. In Example 3, the conductive film area and the corresponding carbon oil area of ​​the three-wire single-circuit conductive plate are 70%, and the cost of the carbon oil printing process will be higher.

[0091] Product quality: Compared with the carbon oil process, the electroplated conductive film is completely superior in the flatness of the conductive plate and the uniformity of the conductive film;

[0092] Weldability: In fact, carbon oil is not weldable. Therefore, if the carbon oil printing process is adopted, the conductive plates cannot be spliced. Alternatively, other splicing methods can be used for splicing. However, continuous conductivity of the conductive plates cannot be achieved at the splicing points. The conductive film of the present application can achieve good welding performance, and the conductive plates can be arbitrarily cut to match the guide rails of corresponding lengths.

Claims

1. A track light, characterized in that: The invention comprises a guide rail (8) and a conductive plate (1) fixed in the guide rail (8), and also comprises a light source mounted on the guide rail (8), the light source being electrically connected to the conductive plate (1) so that the light source emits light when energized by the conductive plate (1), the guide rail (8) comprising a U-shaped mounting groove (8a), the conductive plate (1) being mounted on the bottom of the groove or on both side walls of the groove of the U-shaped mounting groove (8a); the conductive plate (1) comprising a conductive surface (1a) and a wiring surface (1b) arranged on the opposite side of the conductive surface (1a), the conductive surface (1a) A conductive strip (2) is arranged on the conductive plate (1), the conductive strip (2) extending along the length direction of the conductive plate (1), and the conductive strip (2) is covered with a conductive film (3) without metallic luster; a through hole (6) is drilled on the conductive plate (1), the inner wall of the through hole (6) is covered with a conductive layer, and the conductive strip (2) is electrically connected to the wiring surface (1b) through the conductive layer; a mounting structure (7) for fixing the conductive strip (2) is provided on the conductive plate (1); and a wiring terminal (4) for connecting to a power supply is arranged on the wiring surface (1b).

2. A track light according to claim 1, characterized in that: The conductive film (3) is a tin-nickel alloy plating layer.

3. A track light according to claim 1, characterized in that: The wiring surface (1b) is also provided with a circuit (5) for controlling the lighting effect of the light source.

4. A track light according to any one of claims 1 to 3, characterized in that: The conductive plate (1) is a two-wire single-circuit conductive plate, and two conductive strips (2) are arranged side by side on the conductive surface (1a).

5. A track light according to any one of claims 1 to 3, characterized in that: The conductive plate is a three-wire single-circuit conductive plate, and three conductive strips (2) are arranged side by side on the conductive surface (1a).

6. The track light according to claim 1, characterized in that: The length of the conductive plate (1) corresponds to the length of the guide rail (8), so that when the light source is slidably mounted on the guide rail (8), the light source is always electrically connected to the conductive plate (1).

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