Multi-primary color LED lamp bead multi-path adjustment fixture

Abstract

The utility model discloses a kind of multi-primary color LED lamp bead multi-path test fixture, applied to the testing of integrating sphere to LED lamp bead, including first cylindrical block, first cylindrical block is equipped with second cylindrical block, a set of chuck is symmetrically arranged on the side of second cylindrical block away from first cylindrical block, chuck is fixed on first cylindrical block by fastening bolt;The side of first cylindrical block close to second cylindrical block is provided with first slot, and the side of second cylindrical block is provided with second slot, which is communicated with first slot.The utility model makes the output line of external DC power supply unit to be connected with the pin corresponding to other road light emitting chip of multi-primary color LED lamp bead through first slot and second slot, so as not to affect the close adhesion of second cylindrical block and the inlet end of integrating sphere, and integrating sphere will not leak light;Meanwhile, multi-primary color LED lamp bead does not need to move into and out of integrating sphere machine, and the current parameter of each road light emitting chip of multi-primary color LED lamp bead can be debugged.

Description

Technical Field

[0001] This utility model relates to the field of multi-color LED technology, specifically a multi-channel adjustment and testing fixture for multi-color LED beads. Background Technology

[0002] The photoelectric characteristics of multi-color LED chips are formed by mixing the light of four colors: red, yellow, blue, and green. The current parameters of each primary color chip need to be different so that the color tolerance of the LED chip meets the national standard. Therefore, it is necessary to adjust the current parameters of each primary color chip of the LED chip.

[0003] During the testing of parameters such as luminous flux and color temperature of LED chips, the LED chips need to be placed on a carrier and then fed into an integrating sphere. The integrating sphere forms a diffuse reflection light field through multiple reflections through its inner wall, ensuring that the light emitted by the light source is evenly distributed within the sphere. This uniform light field reduces measurement errors caused by differences in light shape and divergence angle; moreover, the integrating sphere isolates external light interference, allowing measurement only of the radiation characteristics of the internal light source, while also preventing leakage of the internal light source outwards.

[0004] Currently, integrating spheres are mainly used for debugging single-color LED chips. However, a single-color LED chip has only one light-emitting chip, while a multi-color LED chip has four light-emitting chips: red, yellow, blue, and green, each requiring different current parameters for driving. Therefore, when debugging multi-color LED chips using an integrating sphere, the LED chip needs to be constantly moved in and out of the integrating sphere machine to ensure that the output of the DC power supply corresponding to the integrating sphere can sequentially contact the corresponding pins of each primary color light-emitting chip, resulting in low debugging efficiency for multi-color LED lamps. Utility Model Content

[0005] The purpose of this utility model is to improve and innovate upon the shortcomings and problems existing in the background technology, and to provide a multi-channel adjustment and testing fixture for multi-color LED beads.

[0006] A multi-channel adjustment and testing fixture for multi-color LED beads, applied to the testing of LED beads using an integrating sphere, includes a first cylindrical block, on which a second cylindrical block is mounted, with the cross-sectional diameter of the first cylindrical block being larger than that of the second cylindrical block. The outer diameter of the second cylindrical block is adapted to the inner diameter of the inlet end of the integrating sphere. A set of clamps is symmetrically arranged on the side of the second cylindrical block away from the first cylindrical block, and the clamps are fixed to the second cylindrical block by fastening bolts. A first strip groove is formed on the side of the first cylindrical block near the second cylindrical block, and a second strip groove communicating with the first strip groove is formed on the side of the second cylindrical block.

[0007] A further embodiment is that a data transmission line is connected to the first cylindrical block, and a signal transmission connector is connected to the end of the data transmission line away from the first cylindrical block. The signal transmission connector is used to connect to the DC power supply corresponding to the integrating sphere. The data transmission line is provided with a 2-core power line. One of the wires of the 2-core power line is used to conduct to one of the fastening bolts, and the other wire of the 2-core power line is used to conduct to the other fastening bolt.

[0008] A further embodiment is that a groove is formed in the middle of the second cylindrical block, and a support block is slidably fitted in the groove. The support block is connected to the bottom wall of the groove by a spring.

[0009] A further embodiment is that the support block is composed of a copper rod and a plastic block, with the copper rod embedded in the middle of the plastic block.

[0010] A further option is to provide a through groove on the clamp, through which the screw of the fastening bolt passes.

[0011] A further option is that both the first cylindrical block and the second cylindrical block are made of PC material, and the light transmittance of the first cylindrical block is less than 10%.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) After loosening the fastening bolt, the clamp can be moved and rotated so that the clamp can accurately clamp the pin corresponding to a certain light-emitting chip in the multi-primary color LED lamp beads; thus, on the one hand, it is convenient for the DC power supply equipped by the integrating ball machine to supply power to the light-emitting chip, and on the other hand, the multi-primary color LED lamp beads to be adjusted are firmly fixed on the adjustment fixture. (2) This utility model achieves flexible adjustment of the LED lamp bead installation height through the cooperation of the second cylindrical block, groove, support block and spring. Even if the pin height of the LED lamp bead changes, the clamp can still maintain close contact with the pin of the light-emitting chip, thereby effectively improving the adaptability of the adjustment fixture. (3) This utility model opens a first strip groove on the first cylindrical block and opens a second strip groove on the side of the second cylindrical block that is connected to the first strip groove; so that the output line of the external DC power supply can be connected to the pins of the other light-emitting chips of the multi-color LED lamp beads through the first and second strip grooves, so as not to affect the tight fit between the second cylindrical block and the entrance end of the integrating sphere, and the integrating sphere will not leak light; at the same time, the multi-color LED lamp beads do not need to be moved in and out of the integrating sphere machine to complete the adjustment of the current parameters of each light-emitting chip of the multi-color LED lamp beads; (2) The support block in this utility model is composed of a copper rod and a plastic block. The copper rod is embedded in the middle of the plastic block. Because the copper rod has excellent thermal conductivity, it can quickly conduct away the heat generated by the LED beads when they are working. At the same time, the copper rod is not easily worn. Attached Figure Description

[0013] Figure 1 A schematic diagram of a multi-color LED bead multi-channel adjustment fixture assembled on an integrating sphere, provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of a multi-channel adjustment and testing fixture for multi-color LED beads provided in an embodiment of the present invention; Figure 3 A three-dimensional structural diagram of the first cylindrical block and the second cylindrical block provided in an embodiment of this utility model; Figure 4 This is a partial cross-sectional structural diagram of the first cylindrical block and the second cylindrical block provided in an embodiment of the present utility model.

[0014] Reference numerals: 1. First cylindrical block; 101. First slot; 2. Second cylindrical block; 201. Second slot; 202. Groove; 3. Clamp; 301. Through slot; 4. Fastening bolt; 5. Support block; 501. Copper rod; 502. Plastic block; 6. Spring; 7. Data transmission line; 8. Signal transmission connector; 9. Integrating sphere. Detailed Implementation

[0015] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] Please see Figure 1 and Figure 2This invention provides a multi-channel adjustment and testing fixture for multi-color LED beads, applied to the testing of LED beads using an integrating sphere 9. It includes a first cylindrical block 1, on which a second cylindrical block 2 is mounted, with the cross-sectional diameter of the first cylindrical block 1 being larger than that of the second cylindrical block 2. Both the first cylindrical block 1 and the second cylindrical block 2 are made of PC material. The light transmittance of the first cylindrical block 1 is less than 10%; preferably, the first cylindrical block 1 is made of black material. The outer diameter of the second cylindrical block 2 is matched with the inner diameter of the inlet end of the integrating sphere 9; therefore, when the multi-channel adjustment and testing fixture is assembled on the integrating sphere 9, the integrating sphere 9 will not leak light, and will not affect the testing of parameters such as luminous flux and color temperature of the LED beads.

[0018] Please see Figures 2-4 The second cylindrical block 2 has a groove 202 in the center of the side away from the first cylindrical block 1. A support block 5 is slidably fitted in the groove 202. The support block 5 is connected to the bottom wall of the groove 202 by a spring 6, so that the support block 5 can move up and down relative to the second cylindrical block 2. A set of clamps 3 are symmetrically arranged on the side of the second cylindrical block 2 away from the first cylindrical block 1. The clamps 3 are fixed to the second cylindrical block 2 by fastening bolts 4. Specifically, the clamps 3 have a through groove 301 for the screw of the fastening bolt 4 to pass through. Therefore, after loosening the fastening bolt 4, the chuck 3 can be moved and rotated so that it can accurately clamp the pin corresponding to a certain light-emitting chip in the multi-color LED lamp bead, thereby firmly fixing the multi-color LED lamp bead to be adjusted on the adjustment fixture. In addition, since the height of the support block 5 can be flexibly adjusted, even if the pin height of the LED lamp bead changes, the chuck 3 can still maintain close contact with the pin of the light-emitting chip for different models of LED lamp beads, thus effectively improving the adaptability of the adjustment fixture.

[0019] Preferably, the support block 5 is composed of a copper rod 501 and a plastic block 502, with the copper rod 501 embedded in the middle of the plastic block 502. Because the copper rod 501 has excellent thermal conductivity, it can quickly conduct the heat generated by the LED beads during operation, and the copper rod 501 is not easily worn.

[0020] It should be noted that a data transmission line 7 is connected to the first cylindrical block 1, and a signal transmission connector 8 is connected to the end of the data transmission line 7 away from the first cylindrical block 1. The signal transmission connector 8 is used to connect to the DC power supply corresponding to the integrating sphere 9. The data transmission line 7 contains a two-core power wire. One of the two core power wires is used to conduct electricity to one of the fastening bolts 4, and the other core power wire is used to conduct electricity to the other fastening bolt 4. Since the two clamps 3 are interconnected with the fastening bolts 4, and the two clamps 3 are respectively connected to the pins on both sides of a certain light-emitting chip in the LED lamp bead, the DC power supply can provide DC power to one of the light-emitting chips in the LED lamp bead through the data transmission line 7, the fastening bolts 4, and the clamps 3. The connection method between the signal transmission connector 8 and the DC power supply corresponding to the integrating sphere 9 is existing technology, and this utility model does not make any technical improvements or innovations in this regard.

[0021] like Figure 3 As shown, the first cylindrical block 1 has a first groove 101 on its side near the second cylindrical block 2, and the second cylindrical block 2 has a second groove 201 on its side that communicates with the first groove 101. Since the light-emitting chip of a multi-color LED lamp bead includes four paths—red, yellow, blue, and green—each path requires different current parameters for driving; therefore, this invention allows the output line of an external DC power supply to connect to the corresponding pins of other light-emitting chips in the multi-color LED lamp bead via the first groove 101 and the second groove 201. In this way, the red, yellow, blue, and green light-emitting chips of the multi-color LED lamp can be connected to the DC power supply in advance, so that the current parameters of each light-emitting chip of the multi-color LED lamp can be adjusted without constantly moving the integrating sphere 9 in and out. Moreover, the output line of the external DC power supply runs through the first slot 101 and the second slot 201, so as not to affect the tight fit between the second cylindrical block 2 and the entrance end of the integrating sphere 9, and the integrating sphere 9 will not leak light.

[0022] The working principle of this utility model is as follows: In specific use, first loosen the fastening bolt 4, remove the clamp 3, then place the multi-color LED bead to be tested on the support block 5, then move and rotate the clamp 3 so that the two clamps 3 accurately clamp the pins on both sides of a certain light-emitting chip in the multi-color LED bead, and then tighten the fastening bolt 4, thereby firmly fixing the multi-color LED bead to be tested on the testing fixture. At the same time, the fastening bolt 4 and the 2-core power line in the data transmission line 7 are interconnected, so that the DC power supply corresponding to the integrating sphere 9 can... DC power is supplied to one of the LED chips via data transmission line 7, fastening bolt 4, and clamp 3. Then, the output line of the external DC power supply is routed through the first slot 101 and the second slot 201 to connect to the corresponding pins of the other LED chips in the multi-color LED. This ensures that the red, yellow, blue, and green LED chips are pre-connected to the DC power supply. Next, the adjustment fixture is mounted on the integrating sphere 9 to adjust the current parameters of each LED chip. Because the output line of the external DC power supply runs through the first slot 101 and the second slot 201, and the cross-sectional diameter of the first cylindrical block 1 is larger than that of the second cylindrical block 2, the tight fit between the second cylindrical block 2 and the inlet end of the integrating sphere 9 is not affected, preventing light leakage from the integrating sphere 9.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0025] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Although embodiments of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-channel adjustment and testing fixture for multi-color LED beads, applied to the testing of LED beads using an integrating sphere (9), characterized in that: The first cylindrical block (1) is mounted on a second cylindrical block (2), and the cross-sectional diameter of the first cylindrical block (1) is larger than the cross-sectional diameter of the second cylindrical block (2). The outer diameter of the second cylindrical block (2) is adapted to the inner diameter of the inlet end of the integrating sphere (9). A set of clamps (3) are symmetrically arranged on the side of the second cylindrical block (2) away from the first cylindrical block (1). The clamps (3) are fixed to the second cylindrical block (2) by fastening bolts (4). A first strip groove (101) is opened on the side of the first cylindrical block (1) close to the second cylindrical block (2), and a second strip groove (201) connected to the first strip groove (101) is opened on the side of the second cylindrical block (2).

2. The multi-channel adjustment and testing fixture for multi-color LED beads according to claim 1, characterized in that: A data transmission line (7) is connected to the first cylindrical block (1). A signal transmission connector (8) is connected to one end of the data transmission line (7) away from the first cylindrical block (1). The signal transmission connector (8) is used to connect to the DC power supply corresponding to the integrating sphere (9). A two-core power line is provided inside the data transmission line (7). One of the two core power lines is used to conduct to one of the fastening bolts (4), and the other core power line is used to conduct to the other fastening bolt (4).

3. The multi-channel adjustment and testing fixture for multi-color LED beads according to claim 1, characterized in that: The second cylindrical block (2) has a groove (202) in the middle, and a support block (5) is slidably fitted in the groove (202). The support block (5) is connected to the bottom wall of the groove (202) by a spring (6).

4. A multi-channel adjustment and testing fixture for multi-color LED beads according to claim 3, characterized in that: The support block (5) is composed of a copper rod (501) and a plastic block (502), with the copper rod (501) embedded in the middle of the plastic block (502).

5. A multi-channel adjustment and testing fixture for multi-color LED beads according to claim 1, characterized in that: The chuck (3) has a through groove (301) for the screw of the fastening bolt (4) to pass through.

6. A multi-channel adjustment and testing fixture for multi-color LED beads according to claim 1, characterized in that: Both the first cylindrical block (1) and the second cylindrical block (2) are made of PC material, and the light transmittance of the first cylindrical block (1) is less than 10%.

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