LED spectrum measurement jig

Abstract

The application discloses an LED spectrum measurement jig and belongs to the technical field of spectrum measurement, which comprises a jig bottom plate base, a base plate, an upper cover plate, LED lamp beads and four fixing seats, the upper cover plate is fixedly installed on the top of the jig bottom plate base, the base plate is slidably installed on the top of the jig bottom plate base, the LED lamp beads are arranged on the top of the base plate, the fixing seats are fixedly installed on the top of the upper cover plate, the four fixing seats are threadedly connected with stop screws on the side close to each other, and the stop screws are abutted against the outer side of the LED lamp beads. The four movable base plates with probes can change the solder joint spacing by moving, and the stop screws are used for fixing the lamp beads, so that the universality of lamp beads of all sizes can be guaranteed, the compatibility problem that different types of lamp beads need different types of measurement jigs at present can be solved, the flexibility of a single jig to different spectrum measurement scenes is improved, and the cost is effectively controlled.

Description

Technical Field

[0001] This invention relates to the field of spectral measurement technology, and in particular to an LED spectral measurement fixture. Background Technology

[0002] LED spectral measurement is an important evaluation method for detecting the physical structure and chemical composition of LED devices. During LED spectral testing, a specialized spectrometer is typically used to measure the wavelength and brightness of the light emitted by the LED device, and the data is recorded and analyzed using precise photosensitive components. This measurement method has significant reference value and guiding significance for the practical application of subsequent end products.

[0003] Existing LED spectral measurement instruments employ a strict one-to-one correspondence between the fixtures and the LED chips being tested. This means that different types and models of LED chips require specially customized measurement fixtures. This traditional fixture design has significant limitations: the fixtures lack compatibility and flexibility, making it impossible to share fixtures across multiple product models. This forces companies to invest substantial resources in fixture design, manufacturing, and maintenance during production, resulting in serious resource waste, difficulty in effectively controlling production costs, and hindering the further development of the LED industry.

[0004] Most existing LED spectral measurement instruments use fixtures that correspond one-to-one with the LED chips being measured. Different types of LED chips require different types of measurement fixtures, resulting in a lack of compatibility and flexibility. This prevents multiple product models from sharing fixtures, leading to significant resource waste and hindering effective cost control. Patent document CN101387572B discloses a spectral measurement fixture comprising: a fixing plate with a central circular first light-transmitting hole; a placement plate with several circular receiving holes of different sizes, each receiving hole having a receiving portion and a second light-transmitting hole located at the bottom center of the receiving hole, the second light-transmitting hole having a diameter slightly smaller than the diameter of the receiving portion; and a luminous flux shield with several circular third light-transmitting holes of the same number as the receiving holes, each third light-transmitting hole corresponding one-to-one with the receiving holes, the third light-transmitting hole having a diameter slightly smaller than the diameter of the receiving portion. The fixing plate is connected to both the placement plate and the luminous flux shield. Rotate the placement plate and the light flux shield so that the center of the first light-transmitting hole, the second light-transmitting hole, and the third light-transmitting hole corresponding to the second light-transmitting hole are aligned. Although the above technical solutions provide several optional specifications, they can only be adjusted within a fixed set of specifications, which still limits the selection process. Therefore, we propose an LED spectral measurement fixture to solve this problem. Summary of the Invention

[0005] The purpose of this invention is to provide an LED spectral measurement fixture. By introducing a substrate with a probe that can move along the X / Y axis for alignment and adjusting and fixing with a rotatable fixing screw, it is possible to fix LED beads of different specifications. This transforms the originally discrete changes in LED bead models into continuous screw turning, thereby solving the compatibility problem of different types of measurement fixtures required for different types of LED beads, improving flexibility, and effectively controlling costs, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An LED spectral measurement fixture includes: a fixture base plate, a substrate, a top cover plate, LED beads, and four fixing seats. The substrate is slidably mounted on the top of the fixture base plate, the LED beads are disposed on the top of the substrate, and the fixing seats are fixedly mounted on the top of the top cover plate. Each of the four fixing seats has a threaded fixing screw on one side close to each other, and one end of the fixing screw abuts against the outside of the LED beads.

[0007] Preferably, the substrate includes: a main body and four probes, the outer side of the main body is integrally formed with multiple connecting arms, the other end of the connecting arms is fixedly mounted with a limiting disk, the top of the main body is provided with a cross-shaped partition groove, and the probes are fixedly mounted on the top of the substrate.

[0008] Preferably, the bottom of the upper cover plate is provided with a square groove, and the connecting arm is slidably installed in the corresponding groove. The four probes are probe A, probe B, probe C and probe D.

[0009] Preferably, the upper cover plate has scales on its front and rear sides and left and right sides.

[0010] Preferably, the bottom of the LED bead is provided with an R pad, a G pad, a B pad, and a common electrode pad.

[0011] Preferably, the other end of the fixing screw has a hexagonal groove.

[0012] Preferably, the top of the fixture base plate has a groove.

[0013] Preferably, the upper cover plate is fixedly installed on the top of the fixture base plate.

[0014] Preferably, the upper cover plate is detachably mounted on top of the fixture base plate; The top cover plate has four mounting mechanisms at its bottom corners. Each mounting mechanism includes a connecting plate, a snap-fit ​​plate, and a compression spring. The top of the connecting plate is fixedly connected to the top cover plate. A lateral groove is formed on one side of the connecting plate. The snap-fit ​​plate is slidably connected in the lateral groove. One end of the compression spring is fixedly connected to the snap-fit ​​plate. The snap-fit ​​plate abuts against the bottom of the fixture base plate. The other end of the compression spring is fixedly connected in the lateral groove. Limiting strips are integrally formed on both sides of the snap-fit ​​plate. Limiting grooves are formed on the side walls of the lateral grooves. The limiting strips are slidably connected in the limiting grooves.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, the LED spectral measurement fixture, through the sliding fit structure between the substrate and the upper cover plate and the precision scale design, can realize the precise fine adjustment of the probe in the X / Y axis direction, ensuring that the probe can quickly and accurately correspond to the center position of the pad of LED beads of different specifications, which greatly improves the accuracy and efficiency of measurement and positioning. 2. In this invention, the LED spectral measurement fixture adopts a split probe structure (probes A, B, C, D) and connects to the R, G, B and common electrode pads of the LED lamp bead respectively. This not only ensures the reliability of the electrical connection, but also avoids the poor compatibility problem caused by the fixed position of the pads in traditional soldering fixtures, and significantly improves the stability and repeatability of the measurement. 3. In this invention, the LED spectral measurement fixture, through the sliding fit structure of the limiting plate and the groove, ensures that the substrate remains stable and does not detach from the fixture body during movement. At the same time, combined with the guiding design of the cross-shaped partition groove, it further enhances the stability of structural adjustment and the convenience of operation, and effectively prevents measurement errors caused by offset. 4. In this invention, the LED spectral measurement fixture fixes the LED beads through two movable modules: a movable substrate and a fixing screw. Compared with the traditional fixture, it has higher flexibility, solves the inconvenience caused by the one-to-one correspondence between the fixture and the LED beads, and improves the compatibility and variability of the spectral measurement fixture. 5. The LED spectral measurement fixture described in this invention utilizes four movable probe substrates that can change the solder joint spacing by moving them, and uses fixing screws to fix the LED beads, thereby ensuring the universality of LED beads of all sizes. This effectively solves the compatibility problem of different types of measurement fixtures required for different types of LED beads, improves the flexibility of a single fixture to cope with different spectral measurement scenarios, and effectively controls costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an LED spectral measurement fixture proposed in this invention; Figure 2This is an exploded three-dimensional structural diagram of an LED spectral measurement fixture proposed in this invention; Figure 3 This is a cross-sectional structural schematic diagram of an LED spectral measurement fixture proposed in this invention; Figure 4 for Figure 3 A magnified view of part A in the middle; Figure 5 This is a schematic diagram of the three-dimensional structure of the substrate proposed in this invention; Figure 6 for Figure 5 A magnified view of part B in the middle section; Figure 7 This is a three-dimensional structural diagram of the LED lamp bead proposed in this invention; Figure 8 This is a three-dimensional structural diagram of an LED spectral measurement fixture proposed in this invention from another perspective; Figure 9 for Figure 8 A magnified view of part C in the middle.

[0017] In the diagram: 1. Fixture base plate; 2. Top cover plate; 201. Scale; 3. Base plate; 301. Main body; 302. Connecting arm; 303. Limiting plate; 304. Cross-shaped partition groove; 305. Probe A; 306. Probe B; 307. Probe C; 308. Probe D; 4. LED lamp bead; 401. R pad; 402. G pad; 403. B pad; 404. Common electrode pad; 5. Fixing base; 6. Fixing screw; 7. Mounting mechanism; 701. Connecting plate; 702. Compression spring; 703. Buckle plate; 704. Limiting strip. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example 1 Reference Figures 1-7 An LED spectral measurement fixture includes: a fixture base plate 1, a substrate 3, an upper cover plate 2, LED beads 4, and four fixing seats 5. The upper cover plate 2 is fixedly installed on the top of the fixture base plate 1. The substrate 3 is slidably installed on the top of the fixture base plate 1. The LED beads 4 are disposed on the top of the substrate 3. The fixing seats 5 are fixedly installed on the top of the upper cover plate 2. Each of the four fixing seats 5 has a threaded fixing screw 6 on one side close to each other. One end of the fixing screw 6 abuts against the outside of the LED beads 4.

[0020] In this embodiment, the substrate 3 includes a main body 301 and four probes. Multiple connecting arms 302 are integrally formed on the outer side of the main body 301. A limiting disk 303 is fixedly installed at the other end of the connecting arm 302. A cross-shaped partition groove 304 is provided on the top of the main body 301. The probes are fixedly installed on the top of the substrate 3.

[0021] In this embodiment, a square groove is provided at the bottom of the upper cover plate 2, and the connecting arm 302 is slidably installed in the corresponding groove. The four probes are probe A305, probe B306, probe C307 and probe D308.

[0022] In this embodiment, the upper cover plate 2 is provided with scales 201 on the front and rear sides and the left and right sides.

[0023] In this embodiment, the bottom of the LED bead 4 is provided with an R pad 401, a G pad 402, a B pad 403 and a common electrode pad 404.

[0024] In this embodiment, the other end of the fixing screw 6 is provided with a hexagonal groove.

[0025] In this embodiment, a groove is provided on the top of the fixture base plate 1.

[0026] In this embodiment, the following steps are taken when using it: Step 1: Fix the substrate 3 to the jig base plate 1; Step 2: Calculate the center positions of the R pad 401, G pad 402, B pad 403 and common pad 404 of the LED beads 4 to be connected. After fixing the upper cover plate 2 to the base plate 1 of the fixture, adjust the substrate 3 according to the scale 201 of the upper cover plate 2 on the X / Y axis so that the probe point coordinates correspond to the center points of the LED pads respectively. Step 3: Calculate the position of the LED bead 4 in the center of the fixture, and fix the bead by adjusting the fixing screw 6 in both the X and Y axes. After fixing the bead, turn on the bead to perform spectral measurement.

[0027] Example 2 Reference Figure 8-9 An LED spectral measurement fixture, which differs from Embodiment 1 in that the upper cover plate 2 is detachably installed on the top of the fixture base plate 1; The top cover plate 2 is provided with mounting mechanisms 7 at its four bottom corners. The mounting mechanism 7 includes a connecting plate 701, a snap-fit ​​plate 703, and a compression spring 702. The top of the connecting plate 701 is fixedly connected to the top cover plate 2. A lateral groove is provided on one side of the connecting plate 701. The snap-fit ​​plate 703 is slidably connected in the lateral groove. One end of the compression spring 702 is fixedly connected to the snap-fit ​​plate 703. The snap-fit ​​plate 703 abuts against the bottom of the fixture base plate 1. The other end of the compression spring 702 is fixedly connected in the lateral groove. Limiting strips 704 are integrally formed on both sides of the snap-fit ​​plate 703. Limiting grooves are provided on the side wall of the lateral groove. The limiting strips 704 are slidably connected in the limiting grooves.

[0028] In this embodiment, during use, the buckle plate 703 is positioned by the compression spring 702, and the connection and fixation between the fixture base plate 1 and the upper cover is achieved by the buckle plate 703 abutting against the fixture base plate 1. When disassembly is required, the fixation between the fixture base plate 1 and the upper cover can be released by pushing each buckle plate 703 into the lateral groove, thereby achieving disassembly.

[0029] The present invention has been described in detail above. Specific embodiments have been used to illustrate the principles and implementation methods of the invention. These embodiments are merely illustrative and are intended to help understand the method and core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. An LED spectral measurement fixture, characterized in that, include: The fixture consists of a base plate (1), a base plate (3), a top cover plate (2), LED beads (4), and four fixing seats (5). The base plate (3) is slidably mounted on the top of the base plate (1). The LED beads (4) are mounted on the top of the base plate (3). The fixing seats (5) are fixedly mounted on the top of the top cover plate (2). Each of the four fixing seats (5) has a threaded fastening screw (6) on one side that is close to each other. One end of the fastening screw (6) abuts against the outside of the LED beads (4). The main body (301) and four probes are provided. Multiple connecting arms (302) are integrally formed on the outer side of the main body (301). A limiting disk (303) is fixedly installed at the other end of the connecting arm (302). A cross partition groove (304) is provided on the top of the main body (301). The probes are fixedly installed on the top of the substrate (3). The bottom of the upper cover plate (2) is provided with a square groove, and the connecting arm (302) is slidably installed in the corresponding groove. The four probes are probe A (305), probe B (306), probe C (307) and probe D (308). The bottom of the LED lamp bead (4) is provided with R pad (401), G pad (402), B pad (403) and common electrode pad (404). The upper cover plate (2) is fixedly installed on the top of the fixture base plate (1).

2. The LED spectral measurement fixture according to claim 1, characterized in that, The upper cover plate (2) is provided with scales (201) on the front and rear sides and the left and right sides.

3. The LED spectral measurement fixture according to claim 1, characterized in that, The other end of the fixing screw (6) is provided with a hexagonal groove, and the top of the fixture base plate (1) is provided with a groove.

4. The LED spectral measurement fixture according to claim 3, characterized in that, The upper cover plate (2) is detachably installed on the top of the fixture base plate (1); The top cover plate (2) is provided with four mounting mechanisms (7) at its bottom corners. The mounting mechanism (7) includes a connecting plate (701), a buckle plate (703), and a compression spring (702). The top of the connecting plate (701) is fixedly connected to the top cover plate (2). A side groove is provided on one side of the connecting plate (701). The buckle plate (703) is slidably connected in the side groove. One end of the compression spring (702) is fixedly connected to the buckle plate (703). The buckle plate (703) abuts against the bottom of the fixture base plate (1). The other end of the compression spring (702) is fixedly connected in the side groove. Limiting strips (704) are integrally formed on both sides of the buckle plate (703). Limiting grooves are provided on the side wall of the side groove. The limiting strips (704) are slidably connected in the limiting grooves.

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